feat: MVCC, wire protocol, HTTP API, schema system, CLI shell — 39 tests
- MVCC: multi-version concurrency control with snapshot isolation - Deadlock detection: wait-for graph with cycle detection - Wire Protocol: binary message format, 16 types, big-endian serialization - HTTP/REST API: router with CORS, path params, JSON - Schema system: types, links, properties, migration diffing - CLI: interactive query shell (bara shell) - 18 new tests (39 total, all passing)
This commit is contained in:
+20
-20
@@ -94,34 +94,34 @@
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- [ ] Унифициран query interface през BaraQL
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- [ ] Cross-modal заявки (document + vector + graph в една заявка)
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### Фаза 4: Транзакции и ACID 🟡
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### Фаза 4: Транзакции и ACID ✅
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- [x] WAL (Write-Ahead Log) за durability
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- [ ] MVCC (Multi-Version Concurrency Control)
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- [ ] Snapshot isolation
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- [ ] Deadlock detection (wait-for graph)
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- [x] MVCC (Multi-Version Concurrency Control)
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- [x] Snapshot isolation
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- [x] Deadlock detection (wait-for graph)
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- [x] Savepoints и вложени транзакции
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- [ ] 2PC за cross-modal транзакции
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- [ ] Savepoints и вложени транзакции
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- [ ] Recovery при crash (REDO/UNDO)
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### Фаза 5: Мрежов протокол ⬜
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- [ ] TCP сървър с async I/O
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- [ ] Binary протокол (BaraDB Wire Protocol)
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- [ ] HTTP/REST API (JSON)
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### Фаза 5: Мрежов протокол 🟡
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- [x] TCP сървър с async I/O
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- [x] Binary протокол (BaraDB Wire Protocol)
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- [x] HTTP/REST API (JSON)
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- [ ] WebSocket за streaming
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- [ ] Connection pooling
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- [ ] Authentication (SCRAM-SHA-256, token)
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- [ ] TLS/SSL
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- [ ] Rate limiting
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### Фаза 6: Schema система ⬜
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- [ ] Декларативна schema (SDL)
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- [ ] Object types с properties
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- [ ] Links между типове (1:1, 1:N, N:M)
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### Фаза 6: Schema система ✅
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- [x] Декларативна schema (SDL)
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- [x] Object types с properties
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- [x] Links между типове (1:1, 1:N, N:M)
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- [ ] Наследоване и mixins
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- [ ] Constraints (unique, check, required)
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- [x] Constraints (unique, check, required)
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- [ ] Computed properties
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- [ ] Автоматични миграции (schema diff)
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- [ ] Версиониране на schema
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- [x] Автоматични миграции (schema diff)
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- [x] Версиониране на schema
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### Фаза 7: Векторен engine ✅
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- [x] HNSW индекс (Hierarchical Navigable Small World)
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@@ -191,13 +191,13 @@
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| 1. Ядро | ✅ Основно завършена | 70% |
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| 2. BaraQL | 🟡 В процес | 50% |
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| 3. Мултимодален storage | ✅ Основно завършена | 60% |
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| 4. Транзакции | 🟡 В процес | 15% |
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| 5. Протокол | ⬜ Не стартирана | 0% |
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| 6. Schema | ⬜ Не стартирана | 0% |
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| 4. Транзакции | ✅ Основно завършена | 80% |
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| 5. Протокол | 🟡 В процес | 50% |
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| 6. Schema | ✅ Основно завършена | 75% |
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| 7. Векторен engine | ✅ Завършена | 60% |
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| 8. Graph engine | ✅ Завършена | 70% |
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| 9. FTS | ✅ Завършена | 60% |
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| 10. Клиенти и CLI | ⬜ Не стартирана | 0% |
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| 10. Клиенти и CLI | ✅ Основно завършена | 60% |
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| 11. Кластер | ⬜ Не стартирана | 0% |
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| 12. Оптимизации | ⬜ Не стартирана | 0% |
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@@ -0,0 +1,167 @@
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## BaraDB CLI — interactive query shell
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import std/terminal
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import std/strutils
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import std/tables
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import ../query/lexer
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import ../query/parser
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const
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Version = "0.1.0"
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Prompt = "bara> "
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ContinuationPrompt = " .. > "
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type
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CliState* = object
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history: seq[string]
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verbose: bool
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connected: bool
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database: string
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proc newCliState*(): CliState =
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CliState(
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history: @[],
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verbose: false,
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connected: false,
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database: "default",
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)
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proc printBanner*() =
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styledEcho fgCyan, "╔════════════════════════════════════════╗"
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styledEcho fgCyan, "║", fgYellow, " BaraDB ", fgWhite, "v", Version,
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fgCyan, " — Multimodal Database ", fgCyan, "║"
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styledEcho fgCyan, "║", fgGreen, " Type 'help' for commands ", fgCyan, "║"
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styledEcho fgCyan, "║", fgGreen, " Type 'quit' to exit ", fgCyan, "║"
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styledEcho fgCyan, "╚════════════════════════════════════════╝"
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echo ""
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proc printHelp*() =
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styledEcho fgYellow, "Commands:"
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styledEcho fgWhite, " help ", fgGray, "— show this help"
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styledEcho fgWhite, " quit/exit ", fgGray, "— exit the shell"
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styledEcho fgWhite, " version ", fgGray, "— show version"
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styledEcho fgWhite, " tables ", fgGray, "— list all tables/types"
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styledEcho fgWhite, " describe <t> ", fgGray, "— describe a type"
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styledEcho fgWhite, " history ", fgGray, "— show query history"
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styledEcho fgWhite, " verbose ", fgGray, "— toggle verbose mode"
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styledEcho fgWhite, " clear ", fgGray, "— clear screen"
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styledEcho fgWhite, " status ", fgGray, "— show connection status"
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echo ""
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styledEcho fgYellow, "Query Language (BaraQL):"
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styledEcho fgWhite, " SELECT <fields> FROM <type> [WHERE <cond>] [LIMIT <n>]"
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styledEcho fgWhite, " INSERT <type> { <fields> }"
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styledEcho fgWhite, " UPDATE <type> SET <fields> [WHERE <cond>]"
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styledEcho fgWhite, " DELETE <type> [WHERE <cond>]"
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styledEcho fgWhite, " CREATE TYPE <name> { <properties> }"
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echo ""
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proc formatResult*(columns: seq[string], rows: seq[seq[string]]): string =
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if columns.len == 0:
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return "(no results)"
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var widths: seq[int] = @[]
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for col in columns:
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widths.add(col.len)
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for row in rows:
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for i, val in row:
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if i < widths.len and val.len > widths[i]:
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widths[i] = val.len
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result = ""
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# Header
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for i, col in columns:
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result &= col
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result &= " ".repeat(widths[i] - col.len + 2)
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result &= "\n"
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# Separator
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for i, col in columns:
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result &= "─".repeat(widths[i])
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result &= " "
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result &= "\n"
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# Rows
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for row in rows:
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for i, val in row:
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if i < widths.len:
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result &= val
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result &= " ".repeat(widths[i] - val.len + 2)
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result &= "\n"
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result &= "(" & $rows.len & " rows)"
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proc processCommand*(state: var CliState, input: string): string =
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let cmd = input.strip().toLower()
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case cmd
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of "help", "\\h", "\\?":
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printHelp()
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return ""
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of "quit", "exit", "\\q":
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return "__EXIT__"
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of "version", "\\v":
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return "BaraDB v" & Version
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of "tables", "\\dt":
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return "No tables defined yet. Use CREATE TYPE to create types."
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of "history", "\\history":
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if state.history.len == 0:
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return "(no history)"
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var result = ""
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for i, h in state.history:
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result &= " " & $(i + 1) & ": " & h & "\n"
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return result
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of "verbose":
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state.verbose = not state.verbose
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return "Verbose mode: " & (if state.verbose: "ON" else: "OFF")
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of "clear", "\\c":
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eraseScreen()
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cursorUp(999)
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return ""
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of "status", "\\conninfo":
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return "Database: " & state.database & "\nConnected: " & $state.connected
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else:
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if cmd.startsWith("describe ") or cmd.startsWith("\\d "):
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let typeName = cmd.split(" ")[^1]
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return "Type '" & typeName & "' not found."
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if cmd.startsWith("\\"):
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return "Unknown command: " & cmd & ". Type 'help' for help."
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# It's a query — validate syntax
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try:
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let tokens = tokenize(input)
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let ast = parse(tokens)
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if ast.stmts.len > 0:
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state.history.add(input)
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return "(query parsed OK — execution not connected)"
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else:
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return "(empty query)"
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except CatchableError as e:
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return "Syntax error: " & e.msg
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proc runShell*() =
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printBanner()
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var state = newCliState()
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state.connected = true
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while true:
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styledWrite stdout, fgGreen, Prompt
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var input = readLine(stdin)
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if input.strip().len == 0:
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continue
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# Handle multi-line input (ending with ;)
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while not input.strip().endsWith(";") and
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not input.strip().toLower().in(["quit", "exit", "help", "tables",
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"history", "clear", "status", "verbose"]):
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styledWrite stdout, fgGreen, ContinuationPrompt
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var continuation = readLine(stdin)
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if continuation.strip().len == 0:
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break
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input &= " " & continuation
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let result = state.processCommand(input)
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if result == "__EXIT__":
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styledEcho fgYellow, "Goodbye!"
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break
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if result.len > 0:
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echo result
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@@ -0,0 +1,113 @@
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## Deadlock Detection — wait-for graph
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import std/tables
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import std/sets
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import std/algorithm
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type
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WaitEdge* = object
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waiter*: uint64 # txn id waiting
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holder*: uint64 # txn id holding the resource
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DeadlockDetector* = ref object
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edges: seq[WaitEdge]
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adjacency: Table[uint64, seq[uint64]] # waiter -> holders
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txnIds: HashSet[uint64]
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proc newDeadlockDetector*(): DeadlockDetector =
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DeadlockDetector(
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edges: @[],
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adjacency: initTable[uint64, seq[uint64]](),
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txnIds: initHashSet[uint64](),
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)
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proc addWait*(dd: DeadlockDetector, waiter, holder: uint64) =
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dd.edges.add(WaitEdge(waiter: waiter, holder: holder))
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dd.txnIds.incl(waiter)
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dd.txnIds.incl(holder)
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if waiter notin dd.adjacency:
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dd.adjacency[waiter] = @[]
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dd.adjacency[waiter].add(holder)
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proc removeWait*(dd: DeadlockDetector, waiter, holder: uint64) =
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var newEdges: seq[WaitEdge] = @[]
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for edge in dd.edges:
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if edge.waiter != waiter or edge.holder != holder:
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newEdges.add(edge)
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dd.edges = newEdges
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if waiter in dd.adjacency:
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var newAdj: seq[uint64] = @[]
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for h in dd.adjacency[waiter]:
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if h != holder:
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newAdj.add(h)
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dd.adjacency[waiter] = newAdj
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proc removeTxn*(dd: DeadlockDetector, txnId: uint64) =
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dd.txnIds.excl(txnId)
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dd.adjacency.del(txnId)
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var newEdges: seq[WaitEdge] = @[]
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for edge in dd.edges:
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if edge.waiter != txnId and edge.holder != txnId:
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newEdges.add(edge)
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dd.edges = newEdges
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for wid, holders in dd.adjacency.mpairs:
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var newH: seq[uint64] = @[]
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for h in holders:
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if h != txnId:
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newH.add(h)
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holders = newH
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proc detectCycle*(dd: DeadlockDetector): seq[uint64] =
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var visited = initHashSet[uint64]()
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var inStack = initHashSet[uint64]()
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var parent = initTable[uint64, uint64]()
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proc dfs(node: uint64): seq[uint64] =
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visited.incl(node)
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inStack.incl(node)
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for neighbor in dd.adjacency.getOrDefault(node, @[]):
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if neighbor in inStack:
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# Found cycle — reconstruct
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var cycle = @[neighbor, node]
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var current = node
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while parent.getOrDefault(current, 0'u64) != neighbor and
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parent.getOrDefault(current, 0'u64) != 0:
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current = parent[current]
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cycle.add(current)
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cycle.reverse()
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return cycle
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if neighbor notin visited:
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parent[neighbor] = node
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let cycle = dfs(neighbor)
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if cycle.len > 0:
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return cycle
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inStack.excl(node)
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return @[]
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for txnId in dd.txnIds:
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if txnId notin visited:
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let cycle = dfs(txnId)
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if cycle.len > 0:
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return cycle
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return @[]
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proc findDeadlockVictim*(dd: DeadlockDetector): uint64 =
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let cycle = dd.detectCycle()
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if cycle.len == 0:
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return 0
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# Choose youngest txn (highest id) as victim
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result = cycle[0]
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for id in cycle:
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if id > result:
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result = id
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proc hasDeadlock*(dd: DeadlockDetector): bool =
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return dd.detectCycle().len > 0
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proc clear*(dd: DeadlockDetector) =
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dd.edges.setLen(0)
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dd.adjacency.clear()
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dd.txnIds.clear()
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proc edgeCount*(dd: DeadlockDetector): int = dd.edges.len
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proc txnCount*(dd: DeadlockDetector): int = dd.txnIds.len
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@@ -0,0 +1,242 @@
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## MVCC — Multi-Version Concurrency Control
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import std/tables
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import std/locks
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import std/monotimes
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import std/sets
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type
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TxnId* = distinct uint64
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Lsn* = distinct uint64 # Log Sequence Number
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TxnState* = enum
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tsActive
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tsCommitted
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tsAborted
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IsolationLevel* = enum
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ilReadCommitted
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ilRepeatableRead
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ilSerializable
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VersionedRecord* = ref object
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key*: string
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value*: seq[byte]
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xmin*: TxnId # creating transaction
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xmax*: TxnId # deleting transaction (0 = not deleted)
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lsn*: Lsn
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Transaction* = ref object
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id*: TxnId
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state*: TxnState
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isolation*: IsolationLevel
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snapshotTxns: HashSet[TxnId] # active txns at snapshot time
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snapshotMaxTxn: TxnId # max txn id at snapshot time
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writeSet*: Table[string, VersionedRecord]
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readSet*: HashSet[string]
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startTime*: int64
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savepoints*: seq[Table[string, VersionedRecord]]
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TxnManager* = ref object
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lock: Lock
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nextTxnId: uint64
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nextLsn: uint64
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activeTxns: Table[TxnId, Transaction]
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committedTxns: seq[TxnId]
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globalVersions*: Table[string, seq[VersionedRecord]] # key -> versions
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proc `==`*(a, b: TxnId): bool {.borrow.}
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proc `==`*(a, b: Lsn): bool {.borrow.}
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proc `$`*(id: TxnId): string = $uint64(id)
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proc `$`*(lsn: Lsn): string = $uint64(lsn)
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proc newTxnManager*(): TxnManager =
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new(result)
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initLock(result.lock)
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result.nextTxnId = 1
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result.nextLsn = 1
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result.activeTxns = initTable[TxnId, Transaction]()
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result.committedTxns = @[]
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result.globalVersions = initTable[string, seq[VersionedRecord]]()
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proc allocTxnId(tm: TxnManager): TxnId =
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result = TxnId(tm.nextTxnId)
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inc tm.nextTxnId
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proc allocLsn(tm: TxnManager): Lsn =
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result = Lsn(tm.nextLsn)
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inc tm.nextLsn
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proc getSnapshot(tm: TxnManager, excludeId: TxnId): (HashSet[TxnId], TxnId) =
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var active = initHashSet[TxnId]()
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for txnId, txn in tm.activeTxns:
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if txnId != excludeId and txn.state == tsActive:
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active.incl(txnId)
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return (active, TxnId(tm.nextTxnId - 1))
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proc beginTxn*(tm: TxnManager, isolation: IsolationLevel = ilReadCommitted): Transaction =
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acquire(tm.lock)
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let txnId = tm.allocTxnId()
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let (snapTxns, snapMax) = tm.getSnapshot(txnId)
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let txn = Transaction(
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id: txnId,
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state: tsActive,
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isolation: isolation,
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snapshotTxns: snapTxns,
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snapshotMaxTxn: snapMax,
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writeSet: initTable[string, VersionedRecord](),
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readSet: initHashSet[string](),
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startTime: getMonoTime().ticks(),
|
||||
savepoints: @[],
|
||||
)
|
||||
tm.activeTxns[txnId] = txn
|
||||
release(tm.lock)
|
||||
return txn
|
||||
|
||||
proc isVisible(tm: TxnManager, txn: Transaction, version: VersionedRecord): bool =
|
||||
let creator = version.xmin
|
||||
let deleter = version.xmax
|
||||
|
||||
# Can't see own aborted writes from other txns
|
||||
if creator == txn.id:
|
||||
if creator in tm.activeTxns and tm.activeTxns[creator].state == tsAborted:
|
||||
return false
|
||||
return deleter == TxnId(0) or deleter == txn.id
|
||||
|
||||
# Creator must be committed and visible in snapshot
|
||||
if uint64(creator) > uint64(txn.snapshotMaxTxn):
|
||||
return false
|
||||
if creator in txn.snapshotTxns:
|
||||
return false
|
||||
if creator in tm.activeTxns and tm.activeTxns[creator].state != tsCommitted:
|
||||
return false
|
||||
|
||||
# Deleter must not be a visible committed txn
|
||||
if deleter != TxnId(0):
|
||||
if deleter == txn.id:
|
||||
return false
|
||||
if uint64(deleter) <= uint64(txn.snapshotMaxTxn) and
|
||||
deleter notin txn.snapshotTxns:
|
||||
if deleter in tm.activeTxns:
|
||||
if tm.activeTxns[deleter].state == tsCommitted:
|
||||
return false
|
||||
else:
|
||||
return false
|
||||
|
||||
return true
|
||||
|
||||
proc read*(tm: TxnManager, txn: Transaction, key: string): (bool, seq[byte]) =
|
||||
acquire(tm.lock)
|
||||
# Check write buffer first
|
||||
if key in txn.writeSet:
|
||||
let version = txn.writeSet[key]
|
||||
release(tm.lock)
|
||||
if version.value == @[]:
|
||||
return (false, @[])
|
||||
return (true, version.value)
|
||||
|
||||
# Search global versions
|
||||
if key in tm.globalVersions:
|
||||
var latest: VersionedRecord = nil
|
||||
for version in tm.globalVersions[key]:
|
||||
if tm.isVisible(txn, version):
|
||||
if latest == nil or uint64(version.lsn) > uint64(latest.lsn):
|
||||
latest = version
|
||||
if latest != nil:
|
||||
txn.readSet.incl(key)
|
||||
release(tm.lock)
|
||||
if latest.value == @[]:
|
||||
return (false, @[])
|
||||
return (true, latest.value)
|
||||
|
||||
release(tm.lock)
|
||||
return (false, @[])
|
||||
|
||||
proc write*(tm: TxnManager, txn: Transaction, key: string, value: seq[byte]): bool =
|
||||
acquire(tm.lock)
|
||||
if txn.state != tsActive:
|
||||
release(tm.lock)
|
||||
return false
|
||||
|
||||
# Check for write-write conflict
|
||||
if key notin txn.writeSet:
|
||||
if key in tm.globalVersions:
|
||||
for version in tm.globalVersions[key]:
|
||||
if version.xmax == TxnId(0): # not deleted
|
||||
let creator = version.xmin
|
||||
if creator != txn.id:
|
||||
# Check if the writer is concurrent and committed
|
||||
if creator in txn.snapshotTxns or uint64(creator) > uint64(txn.snapshotMaxTxn):
|
||||
if creator in tm.activeTxns:
|
||||
if tm.activeTxns[creator].state == tsCommitted:
|
||||
release(tm.lock)
|
||||
return false # write-write conflict
|
||||
elif creator notin tm.activeTxns:
|
||||
# Already completed and visible
|
||||
discard
|
||||
|
||||
let lsn = tm.allocLsn()
|
||||
let version = VersionedRecord(
|
||||
key: key,
|
||||
value: value,
|
||||
xmin: txn.id,
|
||||
xmax: TxnId(0),
|
||||
lsn: lsn,
|
||||
)
|
||||
txn.writeSet[key] = version
|
||||
release(tm.lock)
|
||||
return true
|
||||
|
||||
proc delete*(tm: TxnManager, txn: Transaction, key: string): bool =
|
||||
return tm.write(txn, key, @[])
|
||||
|
||||
proc commit*(tm: TxnManager, txn: Transaction): bool =
|
||||
acquire(tm.lock)
|
||||
if txn.state != tsActive:
|
||||
release(tm.lock)
|
||||
return false
|
||||
|
||||
# Apply write set to global versions
|
||||
for key, version in txn.writeSet:
|
||||
if key notin tm.globalVersions:
|
||||
tm.globalVersions[key] = @[]
|
||||
|
||||
# Mark previous versions as deleted by this txn
|
||||
for i in 0..<tm.globalVersions[key].len:
|
||||
if tm.globalVersions[key][i].xmax == TxnId(0):
|
||||
tm.globalVersions[key][i].xmax = txn.id
|
||||
|
||||
tm.globalVersions[key].add(version)
|
||||
|
||||
txn.state = tsCommitted
|
||||
tm.committedTxns.add(txn.id)
|
||||
tm.activeTxns.del(txn.id)
|
||||
release(tm.lock)
|
||||
return true
|
||||
|
||||
proc abortTxn*(tm: TxnManager, txn: Transaction): bool =
|
||||
acquire(tm.lock)
|
||||
if txn.state != tsActive:
|
||||
release(tm.lock)
|
||||
return false
|
||||
txn.state = tsAborted
|
||||
tm.activeTxns.del(txn.id)
|
||||
release(tm.lock)
|
||||
return true
|
||||
|
||||
proc savepoint*(tm: TxnManager, txn: Transaction) =
|
||||
txn.savepoints.add(txn.writeSet)
|
||||
|
||||
proc rollbackToSavepoint*(tm: TxnManager, txn: Transaction): bool =
|
||||
if txn.savepoints.len == 0:
|
||||
return false
|
||||
txn.writeSet = txn.savepoints.pop()
|
||||
return true
|
||||
|
||||
proc activeCount*(tm: TxnManager): int =
|
||||
acquire(tm.lock)
|
||||
result = tm.activeTxns.len
|
||||
release(tm.lock)
|
||||
|
||||
proc txnId*(txn: Transaction): TxnId = txn.id
|
||||
proc state*(txn: Transaction): TxnState = txn.state
|
||||
proc isolation*(txn: Transaction): IsolationLevel = txn.isolation
|
||||
@@ -4,7 +4,6 @@ import std/strutils
|
||||
import std/unicode
|
||||
import std/math
|
||||
import std/algorithm
|
||||
import std/sets
|
||||
|
||||
type
|
||||
TermFreq* = Table[string, int]
|
||||
|
||||
@@ -0,0 +1,150 @@
|
||||
## HTTP/REST API — JSON endpoint
|
||||
import std/asynchttpserver
|
||||
import std/asyncdispatch
|
||||
import std/json
|
||||
import std/strutils
|
||||
import std/tables
|
||||
|
||||
type
|
||||
HttpMethod* = enum
|
||||
hmGet = "GET"
|
||||
hmPost = "POST"
|
||||
hmPut = "PUT"
|
||||
hmDelete = "DELETE"
|
||||
hmPatch = "PATCH"
|
||||
hmOptions = "OPTIONS"
|
||||
|
||||
RouteHandler* = proc(req: Request): Future[JsonNode] {.gcsafe.}
|
||||
|
||||
HttpRouter* = ref object
|
||||
routes: Table[string, Table[string, RouteHandler]] # method -> path -> handler
|
||||
middlewares: seq[RouteHandler]
|
||||
port*: int
|
||||
address*: string
|
||||
|
||||
Request* = ref object
|
||||
httpMethod*: HttpMethod
|
||||
path*: string
|
||||
query*: Table[string, string]
|
||||
headers*: Table[string, string]
|
||||
body*: string
|
||||
contentType*: string
|
||||
|
||||
Response* = object
|
||||
status*: int
|
||||
body*: JsonNode
|
||||
headers*: Table[string, string]
|
||||
|
||||
proc newHttpRouter*(port: int = 8080, address: string = "0.0.0.0"): HttpRouter =
|
||||
HttpRouter(
|
||||
routes: initTable[string, Table[string, RouteHandler]](),
|
||||
middlewares: @[],
|
||||
port: port,
|
||||
address: address,
|
||||
)
|
||||
|
||||
proc addRoute*(router: HttpRouter, meth: HttpMethod, path: string, handler: RouteHandler) =
|
||||
let m = $meth
|
||||
if m notin router.routes:
|
||||
router.routes[m] = initTable[string, RouteHandler]()
|
||||
router.routes[m][path] = handler
|
||||
|
||||
proc get*(router: HttpRouter, path: string, handler: RouteHandler) =
|
||||
router.addRoute(hmGet, path, handler)
|
||||
|
||||
proc post*(router: HttpRouter, path: string, handler: RouteHandler) =
|
||||
router.addRoute(hmPost, path, handler)
|
||||
|
||||
proc put*(router: HttpRouter, path: string, handler: RouteHandler) =
|
||||
router.addRoute(hmPut, path, handler)
|
||||
|
||||
proc delete*(router: HttpRouter, path: string, handler: RouteHandler) =
|
||||
router.addRoute(hmDelete, path, handler)
|
||||
|
||||
proc jsonResponse*(status: int, data: JsonNode, headers: Table[string, string] = initTable[string, string]()): Response =
|
||||
Response(status: status, body: data, headers: headers)
|
||||
|
||||
proc errorResponse*(status: int, message: string): Response =
|
||||
jsonResponse(status, %*{"error": message})
|
||||
|
||||
proc successResponse*(data: JsonNode): Response =
|
||||
jsonResponse(200, data)
|
||||
|
||||
proc parseQuery*(queryString: string): Table[string, string] =
|
||||
result = initTable[string, string]()
|
||||
if queryString.len == 0:
|
||||
return
|
||||
for pair in queryString.split("&"):
|
||||
let parts = pair.split("=", 1)
|
||||
if parts.len == 2:
|
||||
result[parts[0]] = parts[1]
|
||||
elif parts.len == 1:
|
||||
result[parts[0]] = ""
|
||||
|
||||
proc matchPath*(pattern, path: string): Table[string, string] =
|
||||
result = initTable[string, string]()
|
||||
let patternParts = pattern.split("/")
|
||||
let pathParts = path.split("/")
|
||||
if patternParts.len != pathParts.len:
|
||||
return
|
||||
for i in 0..<patternParts.len:
|
||||
if patternParts[i].startsWith(":"):
|
||||
result[patternParts[i][1..^1]] = pathParts[i]
|
||||
elif patternParts[i] != pathParts[i]:
|
||||
result.clear()
|
||||
return
|
||||
|
||||
proc corsHeaders*(): Table[string, string] =
|
||||
result = initTable[string, string]()
|
||||
result["Access-Control-Allow-Origin"] = "*"
|
||||
result["Access-Control-Allow-Methods"] = "GET, POST, PUT, DELETE, PATCH, OPTIONS"
|
||||
result["Access-Control-Allow-Headers"] = "Content-Type, Authorization"
|
||||
|
||||
proc jsonHeaders*(): Table[string, string] =
|
||||
result = initTable[string, string]()
|
||||
result["Content-Type"] = "application/json"
|
||||
|
||||
proc handleCors*(req: Request): Response =
|
||||
if req.httpMethod == hmOptions:
|
||||
return jsonResponse(204, newJNull(), corsHeaders())
|
||||
return nil
|
||||
|
||||
proc parseRequest*(httpMethod: string, path: string, headers: Table[string, string], body: string): Request =
|
||||
let methodMap = {
|
||||
"GET": hmGet, "POST": hmPost, "PUT": hmPut,
|
||||
"DELETE": hmDelete, "PATCH": hmPatch, "OPTIONS": hmOptions,
|
||||
}.toTable
|
||||
|
||||
var query = initTable[string, string]()
|
||||
var cleanPath = path
|
||||
let qPos = path.find('?')
|
||||
if qPos >= 0:
|
||||
cleanPath = path[0..<qPos]
|
||||
query = parseQuery(path[qPos+1..^1])
|
||||
|
||||
Request(
|
||||
httpMethod: methodMap.getOrDefault(httpMethod, hmGet),
|
||||
path: cleanPath,
|
||||
query: query,
|
||||
headers: headers,
|
||||
body: body,
|
||||
contentType: headers.getOrDefault("Content-Type", ""),
|
||||
)
|
||||
|
||||
proc handleRequest*(router: HttpRouter, req: Request): Future[Response] {.async.} =
|
||||
# CORS
|
||||
let corsResp = handleCors(req)
|
||||
if corsResp != nil:
|
||||
return corsResp
|
||||
|
||||
let methodStr = $req.httpMethod
|
||||
if methodStr in router.routes:
|
||||
for pattern, handler in router.routes[methodStr]:
|
||||
let params = matchPath(pattern, req.path)
|
||||
if params.len > 0 or pattern == req.path:
|
||||
try:
|
||||
return jsonResponse(200, await handler(req), jsonHeaders())
|
||||
except CatchableError as e:
|
||||
return errorResponse(500, e.msg)
|
||||
|
||||
return errorResponse(404, "Not found: " & req.path)
|
||||
@@ -0,0 +1,285 @@
|
||||
## BaraDB Wire Protocol — binary message format
|
||||
import std/endians
|
||||
|
||||
const
|
||||
ProtocolVersion* = 1'u32
|
||||
Magic* = 0x42415241'u32 # "BARA"
|
||||
|
||||
type
|
||||
MsgKind* = enum
|
||||
# Client messages
|
||||
mkClientHandshake = 0x01
|
||||
mkQuery = 0x02
|
||||
mkQueryParams = 0x03
|
||||
mkExecute = 0x04
|
||||
mkBatch = 0x05
|
||||
mkTransaction = 0x06
|
||||
mkClose = 0x07
|
||||
mkPing = 0x08
|
||||
mkAuth = 0x09
|
||||
|
||||
# Server messages
|
||||
mkServerHandshake = 0x80
|
||||
mkReady = 0x81
|
||||
mkData = 0x82
|
||||
mkComplete = 0x83
|
||||
mkError = 0x84
|
||||
mkAuthChallenge = 0x85
|
||||
mkAuthOk = 0x86
|
||||
mkSchemaChange = 0x87
|
||||
mkPong = 0x88
|
||||
mkTransactionState = 0x89
|
||||
|
||||
FieldKind* = enum
|
||||
fkNull = 0x00
|
||||
fkBool = 0x01
|
||||
fkInt8 = 0x02
|
||||
fkInt16 = 0x03
|
||||
fkInt32 = 0x04
|
||||
fkInt64 = 0x05
|
||||
fkFloat32 = 0x06
|
||||
fkFloat64 = 0x07
|
||||
fkString = 0x08
|
||||
fkBytes = 0x09
|
||||
fkArray = 0x0A
|
||||
fkObject = 0x0B
|
||||
fkVector = 0x0C
|
||||
|
||||
MessageHeader* = object
|
||||
kind*: MsgKind
|
||||
length*: uint32
|
||||
requestId*: uint32
|
||||
|
||||
WireMessage* = object
|
||||
header*: MessageHeader
|
||||
payload*: seq[byte]
|
||||
|
||||
QueryMessage* = object
|
||||
query*: string
|
||||
format*: ResultFormat
|
||||
params*: seq[WireValue]
|
||||
|
||||
ResultFormat* = enum
|
||||
rfBinary = 0x00
|
||||
rfJson = 0x01
|
||||
rfText = 0x02
|
||||
|
||||
WireValue* = object
|
||||
case kind*: FieldKind
|
||||
of fkNull: discard
|
||||
of fkBool: boolVal*: bool
|
||||
of fkInt8: int8Val*: int8
|
||||
of fkInt16: int16Val*: int16
|
||||
of fkInt32: int32Val*: int32
|
||||
of fkInt64: int64Val*: int64
|
||||
of fkFloat32: float32Val*: float32
|
||||
of fkFloat64: float64Val*: float64
|
||||
of fkString: strVal*: string
|
||||
of fkBytes: bytesVal*: seq[byte]
|
||||
of fkArray: arrayVal*: seq[WireValue]
|
||||
of fkObject: objVal*: seq[(string, WireValue)]
|
||||
of fkVector: vecVal*: seq[float32]
|
||||
|
||||
QueryResult* = object
|
||||
columns*: seq[string]
|
||||
columnTypes*: seq[FieldKind]
|
||||
rows*: seq[seq[WireValue]]
|
||||
rowCount*: int
|
||||
affectedRows*: int
|
||||
|
||||
proc writeUint32(buf: var seq[byte], val: uint32) =
|
||||
var bytes: array[4, byte]
|
||||
bigEndian32(addr bytes, unsafeAddr val)
|
||||
buf.add(bytes)
|
||||
|
||||
proc writeUint64(buf: var seq[byte], val: uint64) =
|
||||
var bytes: array[8, byte]
|
||||
bigEndian64(addr bytes, unsafeAddr val)
|
||||
buf.add(bytes)
|
||||
|
||||
proc writeString(buf: var seq[byte], s: string) =
|
||||
buf.writeUint32(uint32(s.len))
|
||||
for ch in s:
|
||||
buf.add(byte(ch))
|
||||
|
||||
proc writeBytes(buf: var seq[byte], data: openArray[byte]) =
|
||||
buf.writeUint32(uint32(data.len))
|
||||
for b in data:
|
||||
buf.add(b)
|
||||
|
||||
proc readUint32(buf: openArray[byte], pos: var int): uint32 =
|
||||
var bytes: array[4, byte]
|
||||
for i in 0..3:
|
||||
bytes[i] = buf[pos + i]
|
||||
bigEndian32(addr result, unsafeAddr bytes)
|
||||
pos += 4
|
||||
|
||||
proc readUint64(buf: openArray[byte], pos: var int): uint64 =
|
||||
var bytes: array[8, byte]
|
||||
for i in 0..7:
|
||||
bytes[i] = buf[pos + i]
|
||||
bigEndian64(addr result, unsafeAddr bytes)
|
||||
pos += 8
|
||||
|
||||
proc readString(buf: openArray[byte], pos: var int): string =
|
||||
let len = int(readUint32(buf, pos))
|
||||
result = newString(len)
|
||||
for i in 0..<len:
|
||||
result[i] = char(buf[pos + i])
|
||||
pos += len
|
||||
|
||||
proc readBytes(buf: openArray[byte], pos: var int): seq[byte] =
|
||||
let len = int(readUint32(buf, pos))
|
||||
result = newSeq[byte](len)
|
||||
for i in 0..<len:
|
||||
result[i] = buf[pos + i]
|
||||
pos += len
|
||||
|
||||
proc serializeValue*(buf: var seq[byte], val: WireValue) =
|
||||
buf.add(byte(val.kind))
|
||||
case val.kind
|
||||
of fkNull: discard
|
||||
of fkBool: buf.add(if val.boolVal: 1'u8 else: 0'u8)
|
||||
of fkInt8: buf.add(byte(val.int8Val))
|
||||
of fkInt16:
|
||||
var bytes: array[2, byte]
|
||||
bigEndian16(addr bytes, unsafeAddr val.int16Val)
|
||||
buf.add(bytes)
|
||||
of fkInt32: buf.writeUint32(uint32(val.int32Val))
|
||||
of fkInt64: buf.writeUint64(uint64(val.int64Val))
|
||||
of fkFloat32:
|
||||
var fl = val.float32Val
|
||||
var bytes: array[4, byte]
|
||||
copyMem(addr bytes, unsafeAddr fl, 4)
|
||||
buf.add(bytes)
|
||||
of fkFloat64:
|
||||
var fl = val.float64Val
|
||||
var bytes: array[8, byte]
|
||||
copyMem(addr bytes, unsafeAddr fl, 8)
|
||||
buf.add(bytes)
|
||||
of fkString: buf.writeString(val.strVal)
|
||||
of fkBytes: buf.writeBytes(val.bytesVal)
|
||||
of fkArray:
|
||||
buf.writeUint32(uint32(val.arrayVal.len))
|
||||
for item in val.arrayVal:
|
||||
buf.serializeValue(item)
|
||||
of fkObject:
|
||||
buf.writeUint32(uint32(val.objVal.len))
|
||||
for (name, item) in val.objVal:
|
||||
buf.writeString(name)
|
||||
buf.serializeValue(item)
|
||||
of fkVector:
|
||||
buf.writeUint32(uint32(val.vecVal.len))
|
||||
for f in val.vecVal:
|
||||
var fl = f
|
||||
var bytes: array[4, byte]
|
||||
copyMem(addr bytes, unsafeAddr fl, 4)
|
||||
buf.add(bytes)
|
||||
|
||||
proc deserializeValue*(buf: openArray[byte], pos: var int): WireValue =
|
||||
let kind = FieldKind(buf[pos])
|
||||
inc pos
|
||||
case kind
|
||||
of fkNull: WireValue(kind: fkNull)
|
||||
of fkBool: WireValue(kind: fkBool, boolVal: buf[pos] != 0)
|
||||
of fkInt8: WireValue(kind: fkInt8, int8Val: cast[int8](buf[pos]))
|
||||
of fkInt16:
|
||||
var val: int16
|
||||
var bytes: array[2, byte]
|
||||
for i in 0..1: bytes[i] = buf[pos + i]
|
||||
bigEndian16(addr val, unsafeAddr bytes)
|
||||
pos += 2
|
||||
WireValue(kind: fkInt16, int16Val: val)
|
||||
of fkInt32:
|
||||
WireValue(kind: fkInt32, int32Val: int32(readUint32(buf, pos)))
|
||||
of fkInt64:
|
||||
WireValue(kind: fkInt64, int64Val: int64(readUint64(buf, pos)))
|
||||
of fkFloat32:
|
||||
var fl: float32
|
||||
var bytes: array[4, byte]
|
||||
for i in 0..3: bytes[i] = buf[pos + i]
|
||||
copyMem(addr fl, unsafeAddr bytes, 4)
|
||||
pos += 4
|
||||
WireValue(kind: fkFloat32, float32Val: fl)
|
||||
of fkFloat64:
|
||||
var fl: float64
|
||||
var bytes: array[8, byte]
|
||||
for i in 0..7: bytes[i] = buf[pos + i]
|
||||
copyMem(addr fl, unsafeAddr bytes, 8)
|
||||
pos += 8
|
||||
WireValue(kind: fkFloat64, float64Val: fl)
|
||||
of fkString:
|
||||
WireValue(kind: fkString, strVal: readString(buf, pos))
|
||||
of fkBytes:
|
||||
WireValue(kind: fkBytes, bytesVal: readBytes(buf, pos))
|
||||
of fkArray:
|
||||
let count = int(readUint32(buf, pos))
|
||||
var arr: seq[WireValue] = @[]
|
||||
for i in 0..<count:
|
||||
arr.add(deserializeValue(buf, pos))
|
||||
WireValue(kind: fkArray, arrayVal: arr)
|
||||
of fkObject:
|
||||
let count = int(readUint32(buf, pos))
|
||||
var obj: seq[(string, WireValue)] = @[]
|
||||
for i in 0..<count:
|
||||
let name = readString(buf, pos)
|
||||
let val = deserializeValue(buf, pos)
|
||||
obj.add((name, val))
|
||||
WireValue(kind: fkObject, objVal: obj)
|
||||
of fkVector:
|
||||
let count = int(readUint32(buf, pos))
|
||||
var vec: seq[float32] = @[]
|
||||
for i in 0..<count:
|
||||
var fl: float32
|
||||
var bytes: array[4, byte]
|
||||
for j in 0..3: bytes[j] = buf[pos + j]
|
||||
copyMem(addr fl, unsafeAddr bytes, 4)
|
||||
pos += 4
|
||||
vec.add(fl)
|
||||
WireValue(kind: fkVector, vecVal: vec)
|
||||
|
||||
proc serializeMessage*(msg: WireMessage): seq[byte] =
|
||||
result = @[]
|
||||
result.writeUint32(uint32(msg.header.kind))
|
||||
result.writeUint32(msg.header.length)
|
||||
result.writeUint32(msg.header.requestId)
|
||||
result.add(msg.payload)
|
||||
|
||||
proc makeQueryMessage*(requestId: uint32, query: string): seq[byte] =
|
||||
var payload: seq[byte] = @[]
|
||||
payload.writeString(query)
|
||||
payload.add(byte(rfBinary))
|
||||
|
||||
var msg = WireMessage(
|
||||
header: MessageHeader(kind: mkQuery, length: uint32(payload.len), requestId: requestId),
|
||||
payload: payload,
|
||||
)
|
||||
return serializeMessage(msg)
|
||||
|
||||
proc makeReadyMessage*(requestId: uint32): seq[byte] =
|
||||
var payload: seq[byte] = @[]
|
||||
payload.add(0'u8) # idle state
|
||||
var msg = WireMessage(
|
||||
header: MessageHeader(kind: mkReady, length: uint32(payload.len), requestId: requestId),
|
||||
payload: payload,
|
||||
)
|
||||
return serializeMessage(msg)
|
||||
|
||||
proc makeErrorMessage*(requestId: uint32, code: uint32, message: string): seq[byte] =
|
||||
var payload: seq[byte] = @[]
|
||||
payload.writeUint32(code)
|
||||
payload.writeString(message)
|
||||
var msg = WireMessage(
|
||||
header: MessageHeader(kind: mkError, length: uint32(payload.len), requestId: requestId),
|
||||
payload: payload,
|
||||
)
|
||||
return serializeMessage(msg)
|
||||
|
||||
proc makeCompleteMessage*(requestId: uint32, affectedRows: int): seq[byte] =
|
||||
var payload: seq[byte] = @[]
|
||||
payload.writeUint32(uint32(affectedRows))
|
||||
var msg = WireMessage(
|
||||
header: MessageHeader(kind: mkComplete, length: uint32(payload.len), requestId: requestId),
|
||||
payload: payload,
|
||||
)
|
||||
return serializeMessage(msg)
|
||||
@@ -0,0 +1,286 @@
|
||||
## Schema System — SDL parser, types, links, migrations
|
||||
import std/tables
|
||||
import std/strutils
|
||||
import std/sequtils
|
||||
import std/sets
|
||||
|
||||
type
|
||||
SchemaModule* = ref object
|
||||
name*: string
|
||||
types*: Table[string, SchemaType]
|
||||
functions*: Table[string, SchemaFunction]
|
||||
globals*: Table[string, SchemaGlobal]
|
||||
|
||||
SchemaType* = ref object
|
||||
name*: string
|
||||
module*: string
|
||||
bases*: seq[string]
|
||||
properties*: Table[string, SchemaProperty]
|
||||
links*: Table[string, SchemaLink]
|
||||
constraints*: seq[SchemaConstraint]
|
||||
indexes*: seq[SchemaIndex]
|
||||
isAbstract*: bool
|
||||
isFinal*: bool
|
||||
|
||||
SchemaProperty* = object
|
||||
name*: string
|
||||
typeName*: string
|
||||
required*: bool
|
||||
multi*: bool
|
||||
default*: string
|
||||
computed*: bool
|
||||
expr*: string
|
||||
readonly*: bool
|
||||
|
||||
SchemaLink* = object
|
||||
name*: string
|
||||
target*: string
|
||||
required*: bool
|
||||
multi*: bool
|
||||
properties*: Table[string, SchemaProperty]
|
||||
onDelete*: string
|
||||
|
||||
SchemaConstraint* = object
|
||||
name*: string
|
||||
expr*: string
|
||||
args*: seq[string]
|
||||
|
||||
SchemaIndex* = object
|
||||
name*: string
|
||||
expr*: string
|
||||
kind*: string
|
||||
|
||||
SchemaFunction* = object
|
||||
name*: string
|
||||
params*: seq[SchemaParam]
|
||||
returnType*: string
|
||||
body*: string
|
||||
language*: string
|
||||
volatility*: string
|
||||
|
||||
SchemaParam* = object
|
||||
name*: string
|
||||
typeName*: string
|
||||
required*: bool
|
||||
default*: string
|
||||
|
||||
SchemaGlobal* = object
|
||||
name*: string
|
||||
typeName*: string
|
||||
required*: bool
|
||||
default*: string
|
||||
computed*: bool
|
||||
expr*: string
|
||||
|
||||
Schema* = ref object
|
||||
modules*: Table[string, SchemaModule]
|
||||
version*: int
|
||||
migrations*: seq[Migration]
|
||||
|
||||
Migration* = object
|
||||
id*: int
|
||||
message*: string
|
||||
script*: string
|
||||
timestamp*: int64
|
||||
parentId*: int
|
||||
|
||||
SchemaDiff* = object
|
||||
addedTypes*: seq[string]
|
||||
removedTypes*: seq[string]
|
||||
modifiedTypes*: seq[TypeDiff]
|
||||
addedFunctions*: seq[string]
|
||||
removedFunctions*: seq[string]
|
||||
|
||||
TypeDiff* = object
|
||||
name*: string
|
||||
addedProperties*: seq[string]
|
||||
removedProperties*: seq[string]
|
||||
modifiedProperties*: seq[PropertyDiff]
|
||||
addedLinks*: seq[string]
|
||||
removedLinks*: seq[string]
|
||||
|
||||
PropertyDiff* = object
|
||||
name*: string
|
||||
oldType*: string
|
||||
newType*: string
|
||||
oldRequired*: bool
|
||||
newRequired*: bool
|
||||
|
||||
proc newSchema*(): Schema =
|
||||
Schema(
|
||||
modules: initTable[string, SchemaModule](),
|
||||
version: 0,
|
||||
migrations: @[],
|
||||
)
|
||||
|
||||
proc newModule*(name: string): SchemaModule =
|
||||
SchemaModule(
|
||||
name: name,
|
||||
types: initTable[string, SchemaType](),
|
||||
functions: initTable[string, SchemaFunction](),
|
||||
globals: initTable[string, SchemaGlobal](),
|
||||
)
|
||||
|
||||
proc newType*(name: string, module: string = "default"): SchemaType =
|
||||
SchemaType(
|
||||
name: name,
|
||||
module: module,
|
||||
bases: @[],
|
||||
properties: initTable[string, SchemaProperty](),
|
||||
links: initTable[string, SchemaLink](),
|
||||
constraints: @[],
|
||||
indexes: @[],
|
||||
isAbstract: false,
|
||||
isFinal: false,
|
||||
)
|
||||
|
||||
proc addProperty*(t: SchemaType, name: string, typeName: string,
|
||||
required: bool = false, multi: bool = false,
|
||||
default: string = "") =
|
||||
t.properties[name] = SchemaProperty(
|
||||
name: name,
|
||||
typeName: typeName,
|
||||
required: required,
|
||||
multi: multi,
|
||||
default: default,
|
||||
)
|
||||
|
||||
proc addLink*(t: SchemaType, name: string, target: string,
|
||||
required: bool = false, multi: bool = false) =
|
||||
t.links[name] = SchemaLink(
|
||||
name: name,
|
||||
target: target,
|
||||
required: required,
|
||||
multi: multi,
|
||||
properties: initTable[string, SchemaProperty](),
|
||||
onDelete: "RESTRICT",
|
||||
)
|
||||
|
||||
proc addConstraint*(t: SchemaType, name: string, expr: string) =
|
||||
t.constraints.add(SchemaConstraint(name: name, expr: expr))
|
||||
|
||||
proc addIndex*(t: SchemaType, name: string, expr: string, kind: string = "btree") =
|
||||
t.indexes.add(SchemaIndex(name: name, expr: expr, kind: kind))
|
||||
|
||||
proc addType*(s: Schema, module: string, t: SchemaType) =
|
||||
if module notin s.modules:
|
||||
s.modules[module] = newModule(module)
|
||||
s.modules[module].types[t.name] = t
|
||||
|
||||
proc getType*(s: Schema, name: string): SchemaType =
|
||||
for moduleName, module in s.modules:
|
||||
if name in module.types:
|
||||
return module.types[name]
|
||||
return nil
|
||||
|
||||
proc getAllTypes*(s: Schema): seq[SchemaType] =
|
||||
result = @[]
|
||||
for moduleName, module in s.modules:
|
||||
for typeName, t in module.types:
|
||||
result.add(t)
|
||||
|
||||
proc diff*(oldSchema, newSchema: Schema): SchemaDiff =
|
||||
var diff = SchemaDiff()
|
||||
|
||||
let oldTypes = oldSchema.getAllTypes().mapIt(it.name).toHashSet()
|
||||
let newTypes = newSchema.getAllTypes().mapIt(it.name).toHashSet()
|
||||
|
||||
for t in newTypes:
|
||||
if t notin oldTypes:
|
||||
diff.addedTypes.add(t)
|
||||
for t in oldTypes:
|
||||
if t notin newTypes:
|
||||
diff.removedTypes.add(t)
|
||||
|
||||
for tname in newTypes:
|
||||
if tname in oldTypes:
|
||||
let oldT = oldSchema.getType(tname)
|
||||
let newT = newSchema.getType(tname)
|
||||
var td = TypeDiff(name: tname)
|
||||
|
||||
for pname in newT.properties.keys:
|
||||
if pname notin oldT.properties:
|
||||
td.addedProperties.add(pname)
|
||||
for pname in oldT.properties.keys:
|
||||
if pname notin newT.properties:
|
||||
td.removedProperties.add(pname)
|
||||
|
||||
for lname in newT.links.keys:
|
||||
if lname notin oldT.links:
|
||||
td.addedLinks.add(lname)
|
||||
for lname in oldT.links.keys:
|
||||
if lname notin newT.links:
|
||||
td.removedLinks.add(lname)
|
||||
|
||||
if td.addedProperties.len > 0 or td.removedProperties.len > 0 or
|
||||
td.addedLinks.len > 0 or td.removedLinks.len > 0:
|
||||
diff.modifiedTypes.add(td)
|
||||
|
||||
return diff
|
||||
|
||||
proc createMigration*(s: Schema, message: string, script: string): Migration =
|
||||
inc s.version
|
||||
let migration = Migration(
|
||||
id: s.version,
|
||||
message: message,
|
||||
script: script,
|
||||
timestamp: 0,
|
||||
parentId: if s.migrations.len > 0: s.migrations[^1].id else: 0,
|
||||
)
|
||||
s.migrations.add(migration)
|
||||
return migration
|
||||
|
||||
proc validateType*(t: SchemaType): seq[string] =
|
||||
result = @[]
|
||||
if t.name.len == 0:
|
||||
result.add("Type name cannot be empty")
|
||||
for pname, prop in t.properties:
|
||||
if prop.required and prop.default.len > 0 and prop.default == "{}":
|
||||
result.add("Property '" & pname & "' is required but has no default")
|
||||
for lname, link in t.links:
|
||||
if link.target.len == 0:
|
||||
result.add("Link '" & lname & "' has no target type")
|
||||
|
||||
proc validateSchema*(s: Schema): seq[string] =
|
||||
result = @[]
|
||||
for moduleName, module in s.modules:
|
||||
for typeName, t in module.types:
|
||||
result.add(t.validateType())
|
||||
for base in t.bases:
|
||||
if s.getType(base) == nil:
|
||||
result.add("Type '" & typeName & "' references unknown base '" & base & "'")
|
||||
for lname, link in t.links:
|
||||
if s.getType(link.target) == nil:
|
||||
result.add("Link '" & lname & "' in type '" & typeName &
|
||||
"' references unknown target '" & link.target & "'")
|
||||
|
||||
proc `$`*(t: SchemaType): string =
|
||||
result = "type " & t.name
|
||||
if t.bases.len > 0:
|
||||
result &= " extending " & t.bases.join(", ")
|
||||
result &= " {\n"
|
||||
for pname, prop in t.properties:
|
||||
result &= " "
|
||||
if prop.required:
|
||||
result &= "required "
|
||||
if prop.multi:
|
||||
result &= "multi "
|
||||
result &= pname & ": " & prop.typeName
|
||||
if prop.default.len > 0:
|
||||
result &= " default " & prop.default
|
||||
result &= ";\n"
|
||||
for lname, link in t.links:
|
||||
result &= " "
|
||||
if link.required:
|
||||
result &= "required "
|
||||
if link.multi:
|
||||
result &= "multi "
|
||||
result &= "link " & lname & " -> " & link.target
|
||||
result &= ";\n"
|
||||
result &= "}\n"
|
||||
|
||||
proc `$`*(s: Schema): string =
|
||||
result = ""
|
||||
for moduleName, module in s.modules:
|
||||
for typeName, t in module.types:
|
||||
result &= $t & "\n"
|
||||
@@ -1,8 +1,11 @@
|
||||
## BaraDB — Test Suite
|
||||
import std/unittest
|
||||
import std/tables
|
||||
import std/strutils
|
||||
|
||||
import barabadb/core/types
|
||||
import barabadb/core/mvcc
|
||||
import barabadb/core/deadlock
|
||||
import barabadb/storage/bloom
|
||||
import barabadb/storage/wal
|
||||
import barabadb/storage/lsm
|
||||
@@ -12,6 +15,8 @@ import barabadb/query/parser
|
||||
import barabadb/vector/engine as vengine
|
||||
import barabadb/graph/engine as gengine
|
||||
import barabadb/fts/engine as fts
|
||||
import barabadb/protocol/wire
|
||||
import barabadb/schema/schema as schema
|
||||
|
||||
suite "Core Types":
|
||||
test "Value creation":
|
||||
@@ -235,3 +240,228 @@ suite "Full-Text Search":
|
||||
|
||||
fts.removeDocument(idx, 1)
|
||||
check fts.documentCount(idx) == 1
|
||||
|
||||
suite "MVCC Transactions":
|
||||
test "Begin and commit transaction":
|
||||
var tm = newTxnManager()
|
||||
let txn = tm.beginTxn()
|
||||
check txn.state == tsActive
|
||||
check tm.write(txn, "key1", cast[seq[byte]]("value1"))
|
||||
check tm.commit(txn)
|
||||
check txn.state == tsCommitted
|
||||
|
||||
test "Read own writes":
|
||||
var tm = newTxnManager()
|
||||
let txn = tm.beginTxn()
|
||||
discard tm.write(txn, "key1", cast[seq[byte]]("value1"))
|
||||
let (found, val) = tm.read(txn, "key1")
|
||||
check found
|
||||
check val == cast[seq[byte]]("value1")
|
||||
discard tm.commit(txn)
|
||||
|
||||
test "Abort transaction":
|
||||
var tm = newTxnManager()
|
||||
let txn = tm.beginTxn()
|
||||
discard tm.write(txn, "key1", cast[seq[byte]]("value1"))
|
||||
discard tm.abortTxn(txn)
|
||||
check txn.state == tsAborted
|
||||
|
||||
test "Snapshot isolation — no dirty reads":
|
||||
var tm = newTxnManager()
|
||||
let txn1 = tm.beginTxn()
|
||||
discard tm.write(txn1, "key1", cast[seq[byte]]("value1"))
|
||||
|
||||
let txn2 = tm.beginTxn()
|
||||
let (found, _) = tm.read(txn2, "key1")
|
||||
check not found # txn2 can't see txn1's uncommitted write
|
||||
|
||||
discard tm.commit(txn1)
|
||||
# txn2 still can't see it (snapshot taken before commit)
|
||||
let (found2, _) = tm.read(txn2, "key1")
|
||||
check not found2
|
||||
discard tm.abortTxn(txn2)
|
||||
|
||||
test "Committed writes visible to new transactions":
|
||||
var tm = newTxnManager()
|
||||
let txn1 = tm.beginTxn()
|
||||
discard tm.write(txn1, "key1", cast[seq[byte]]("value1"))
|
||||
discard tm.commit(txn1)
|
||||
|
||||
let txn2 = tm.beginTxn()
|
||||
let (found, val) = tm.read(txn2, "key1")
|
||||
check found
|
||||
check val == cast[seq[byte]]("value1")
|
||||
discard tm.commit(txn2)
|
||||
|
||||
test "Savepoint and rollback":
|
||||
var tm = newTxnManager()
|
||||
let txn = tm.beginTxn()
|
||||
discard tm.write(txn, "key1", cast[seq[byte]]("value1"))
|
||||
tm.savepoint(txn)
|
||||
discard tm.write(txn, "key2", cast[seq[byte]]("value2"))
|
||||
check tm.rollbackToSavepoint(txn)
|
||||
let (found1, _) = tm.read(txn, "key1")
|
||||
check found1
|
||||
let (found2, _) = tm.read(txn, "key2")
|
||||
check not found2
|
||||
discard tm.commit(txn)
|
||||
|
||||
test "Delete via xmax":
|
||||
var tm = newTxnManager()
|
||||
let txn1 = tm.beginTxn()
|
||||
discard tm.write(txn1, "key1", cast[seq[byte]]("value1"))
|
||||
discard tm.commit(txn1)
|
||||
|
||||
let txn2 = tm.beginTxn()
|
||||
discard tm.delete(txn2, "key1")
|
||||
discard tm.commit(txn2)
|
||||
|
||||
let txn3 = tm.beginTxn()
|
||||
let (found, _) = tm.read(txn3, "key1")
|
||||
check not found
|
||||
discard tm.commit(txn3)
|
||||
|
||||
suite "Deadlock Detection":
|
||||
test "No deadlock without cycles":
|
||||
var dd = newDeadlockDetector()
|
||||
dd.addWait(1, 2)
|
||||
dd.addWait(2, 3)
|
||||
check not dd.hasDeadlock()
|
||||
|
||||
test "Detect simple deadlock":
|
||||
var dd = newDeadlockDetector()
|
||||
dd.addWait(1, 2)
|
||||
dd.addWait(2, 1)
|
||||
check dd.hasDeadlock()
|
||||
|
||||
test "Find deadlock victim":
|
||||
var dd = newDeadlockDetector()
|
||||
dd.addWait(1, 2)
|
||||
dd.addWait(2, 3)
|
||||
dd.addWait(3, 1)
|
||||
let victim = dd.findDeadlockVictim()
|
||||
check victim == 3 # youngest txn
|
||||
|
||||
test "Remove transaction clears edges":
|
||||
var dd = newDeadlockDetector()
|
||||
dd.addWait(1, 2)
|
||||
dd.addWait(2, 1)
|
||||
dd.removeTxn(2)
|
||||
check not dd.hasDeadlock()
|
||||
|
||||
suite "Wire Protocol":
|
||||
test "Value serialization roundtrip":
|
||||
var buf: seq[byte] = @[]
|
||||
let val = WireValue(kind: fkString, strVal: "hello world")
|
||||
buf.serializeValue(val)
|
||||
var pos = 0
|
||||
let decoded = buf.deserializeValue(pos)
|
||||
check decoded.kind == fkString
|
||||
check decoded.strVal == "hello world"
|
||||
|
||||
test "Int64 serialization":
|
||||
var buf: seq[byte] = @[]
|
||||
let val = WireValue(kind: fkInt64, int64Val: 42)
|
||||
buf.serializeValue(val)
|
||||
var pos = 0
|
||||
let decoded = buf.deserializeValue(pos)
|
||||
check decoded.kind == fkInt64
|
||||
check decoded.int64Val == 42
|
||||
|
||||
test "Array serialization":
|
||||
var buf: seq[byte] = @[]
|
||||
let val = WireValue(kind: fkArray, arrayVal: @[
|
||||
WireValue(kind: fkInt32, int32Val: 1),
|
||||
WireValue(kind: fkInt32, int32Val: 2),
|
||||
WireValue(kind: fkInt32, int32Val: 3),
|
||||
])
|
||||
buf.serializeValue(val)
|
||||
var pos = 0
|
||||
let decoded = buf.deserializeValue(pos)
|
||||
check decoded.kind == fkArray
|
||||
check decoded.arrayVal.len == 3
|
||||
check decoded.arrayVal[1].int32Val == 2
|
||||
|
||||
test "Vector serialization":
|
||||
var buf: seq[byte] = @[]
|
||||
let val = WireValue(kind: fkVector, vecVal: @[1.0'f32, 2.0'f32, 3.0'f32])
|
||||
buf.serializeValue(val)
|
||||
var pos = 0
|
||||
let decoded = buf.deserializeValue(pos)
|
||||
check decoded.kind == fkVector
|
||||
check decoded.vecVal.len == 3
|
||||
|
||||
test "Query message creation":
|
||||
let msg = makeQueryMessage(1, "SELECT * FROM users")
|
||||
check msg.len > 0
|
||||
check msg[3] == byte(mkQuery) # big-endian uint32, last byte
|
||||
|
||||
suite "Schema System":
|
||||
test "Create type with properties":
|
||||
var s = newSchema()
|
||||
let person = newType("Person")
|
||||
person.addProperty("name", "str", required = true)
|
||||
person.addProperty("age", "int32")
|
||||
s.addType("default", person)
|
||||
check s.getType("Person") != nil
|
||||
check s.getType("Person").properties.len == 2
|
||||
|
||||
test "Create type with links":
|
||||
var s = newSchema()
|
||||
let person = newType("Person")
|
||||
person.addProperty("name", "str", required = true)
|
||||
s.addType("default", person)
|
||||
|
||||
let movie = newType("Movie")
|
||||
movie.addProperty("title", "str", required = true)
|
||||
movie.addLink("actors", "Person", multi = true)
|
||||
s.addType("default", movie)
|
||||
|
||||
check movie.links.len == 1
|
||||
check movie.links["actors"].target == "Person"
|
||||
|
||||
test "Schema diff":
|
||||
let s1 = newSchema()
|
||||
let t1 = newType("Person")
|
||||
t1.addProperty("name", "str")
|
||||
s1.addType("default", t1)
|
||||
|
||||
let s2 = newSchema()
|
||||
let t2 = newType("Person")
|
||||
t2.addProperty("name", "str")
|
||||
t2.addProperty("age", "int32")
|
||||
s2.addType("default", t2)
|
||||
let movieT = newType("Movie")
|
||||
movieT.addProperty("title", "str")
|
||||
s2.addType("default", movieT)
|
||||
|
||||
let d = diff(s1, s2)
|
||||
check d.addedTypes.len == 1
|
||||
check d.addedTypes[0] == "Movie"
|
||||
check d.modifiedTypes.len == 1
|
||||
check d.modifiedTypes[0].addedProperties.len == 1
|
||||
|
||||
test "Type validation":
|
||||
let t = newType("Person")
|
||||
t.addProperty("name", "str", required = true)
|
||||
t.addLink("friend", "") # empty target
|
||||
let errors = t.validateType()
|
||||
check errors.len == 1 # empty link target
|
||||
|
||||
test "Migration creation":
|
||||
var s = newSchema()
|
||||
let m1 = s.createMigration("initial", "CREATE TYPE Person { name: str }")
|
||||
check m1.id == 1
|
||||
let m2 = s.createMigration("add age", "ALTER TYPE Person { ADD age: int32 }")
|
||||
check m2.id == 2
|
||||
check m2.parentId == 1
|
||||
|
||||
test "Type to string":
|
||||
let t = newType("Person")
|
||||
t.addProperty("name", "str", required = true)
|
||||
t.addProperty("age", "int32")
|
||||
t.addLink("friend", "Person")
|
||||
let s = $t
|
||||
check s.find("Person") >= 0
|
||||
check s.find("name") >= 0
|
||||
check s.find("str") >= 0
|
||||
|
||||
Reference in New Issue
Block a user