dimgigov
073ec41652
CI / test (push) Has been cancelled
CI / verify (push) Has been cancelled
Clients CI / build-server (push) Has been cancelled
Clients CI / test-python (push) Has been cancelled
Clients CI / test-javascript (push) Has been cancelled
Clients CI / test-nim (push) Has been cancelled
Clients CI / test-rust (push) Has been cancelled
Issue 9: Add backtick-quoted identifier support in lexer.nim - Users can now write `key` to use reserved keywords as column/table names Issue 10: Use \N as internal NULL marker instead of empty string - isNull() now checks for \N instead of value.len == 0 - Empty strings can now be stored in NOT NULL columns - NULL values properly distinguished from empty strings in storage, wire protocol, and HTTP JSON responses
569 lines
20 KiB
Nim
569 lines
20 KiB
Nim
## BaraDB Server — async TCP server with wire protocol
|
|
import std/asyncdispatch
|
|
import std/asyncnet
|
|
import std/strutils
|
|
import std/sequtils
|
|
import std/tables
|
|
import std/os
|
|
import std/endians
|
|
import std/monotimes
|
|
import config
|
|
import logging
|
|
import ../protocol/wire
|
|
import ../protocol/ssl
|
|
import ../query/lexer
|
|
import ../query/parser
|
|
import ../query/ast
|
|
import ../query/executor
|
|
import ../storage/lsm
|
|
import ../core/mvcc
|
|
import ../core/disttxn
|
|
import ../core/replication
|
|
import ../core/sharding
|
|
import ../core/gossip
|
|
import jwt as jwtlib
|
|
|
|
type
|
|
Server* = ref object
|
|
config*: BaraConfig
|
|
running*: bool
|
|
db*: LSMTree
|
|
ctx*: ExecutionContext
|
|
txnManager*: TxnManager
|
|
distTxnManager*: DistTxnManager
|
|
replicationManager*: ReplicationManager
|
|
shardRouter*: ShardRouter
|
|
clusterMembership*: ClusterMembership
|
|
gossipProtocol*: GossipProtocol
|
|
tls*: TLSContext
|
|
activeConnections*: int
|
|
|
|
proc newServer*(config: BaraConfig): Server =
|
|
let dataDir = config.dataDir / "server"
|
|
let db = newLSMTree(dataDir)
|
|
let ctx = newExecutionContext(db)
|
|
ctx.txnManager = newTxnManager()
|
|
var tls: TLSContext = nil
|
|
if config.tlsEnabled and config.certFile.len > 0 and config.keyFile.len > 0:
|
|
let tlsConfig = newTLSConfig(config.certFile, config.keyFile)
|
|
tls = newTLSContext(tlsConfig)
|
|
|
|
# Initialize sharding
|
|
let shardRouter = newShardRouter()
|
|
let localId = if config.raftNodeId.len > 0: config.raftNodeId else: "node-" & $config.port
|
|
let cm = newClusterMembership(shardRouter, localId)
|
|
|
|
# Wire shard migration callbacks to LSM
|
|
shardRouter.iterateKeys = proc(shardId: int): seq[(string, seq[byte])] {.gcsafe.} =
|
|
var entries: seq[(string, seq[byte])] = @[]
|
|
for (key, value) in db.scanAll():
|
|
if shardRouter.getShard(key) == shardId:
|
|
entries.add((key, value))
|
|
return entries
|
|
|
|
shardRouter.storeKeys = proc(shardId: int, entries: seq[(string, seq[byte])]) {.gcsafe.} =
|
|
for (key, value) in entries:
|
|
db.put(key, value)
|
|
|
|
shardRouter.deleteKeys = proc(keys: seq[string]) {.gcsafe.} =
|
|
for key in keys:
|
|
db.delete(key)
|
|
|
|
# Initialize gossip
|
|
let gossipPort = config.raftPort + 100
|
|
let gp = newGossipProtocol(localId, config.address, config.port, gossipPort = gossipPort)
|
|
|
|
# Wire gossip → cluster membership
|
|
gp.onJoin = proc(node: GossipNode) {.gcsafe.} =
|
|
cm.onNodeJoin(node.id, node.host, node.port)
|
|
|
|
gp.onLeave = proc(nodeId: string) {.gcsafe.} =
|
|
cm.onNodeLeave(nodeId)
|
|
|
|
gp.onSuspect = proc(nodeId: string) {.gcsafe.} =
|
|
cm.onNodeSuspect(nodeId)
|
|
|
|
Server(config: config, running: false, db: db, ctx: ctx,
|
|
txnManager: ctx.txnManager, distTxnManager: newDistTxnManager(),
|
|
replicationManager: newReplicationManager(),
|
|
shardRouter: shardRouter,
|
|
clusterMembership: cm,
|
|
gossipProtocol: gp,
|
|
tls: tls)
|
|
|
|
# ----------------------------------------------------------------------
|
|
# Wire Protocol Helpers
|
|
# ----------------------------------------------------------------------
|
|
|
|
proc readUint32BE(data: string, pos: int): uint32 =
|
|
var bytes: array[4, byte]
|
|
for i in 0..3:
|
|
bytes[i] = byte(data[pos + i])
|
|
bigEndian32(addr result, unsafeAddr bytes)
|
|
|
|
proc parseHeader(data: string): (bool, MessageHeader) =
|
|
if data.len < 12:
|
|
return (false, MessageHeader())
|
|
let rawKind = readUint32BE(data, 0)
|
|
{.push warning[HoleEnumConv]: off.}
|
|
let kind = MsgKind(rawKind)
|
|
{.pop.}
|
|
let length = readUint32BE(data, 4)
|
|
let requestId = readUint32BE(data, 8)
|
|
return (true, MessageHeader(kind: kind, length: length, requestId: requestId))
|
|
|
|
# ----------------------------------------------------------------------
|
|
# Query Execution (pipeline-based)
|
|
# ----------------------------------------------------------------------
|
|
|
|
proc typeToFieldKind*(colType: string): FieldKind =
|
|
let t = colType.toUpper()
|
|
if t.startsWith("INT") or t == "SERIAL" or t == "BIGINT" or t == "SMALLINT" or t == "BIGSERIAL" or t == "SMALLSERIAL":
|
|
return fkInt64
|
|
elif t.startsWith("FLOAT") or t == "REAL" or t == "DOUBLE" or t == "NUMERIC":
|
|
return fkFloat64
|
|
elif t == "BOOLEAN" or t == "BOOL":
|
|
return fkBool
|
|
elif t == "JSON" or t == "JSONB":
|
|
return fkJson
|
|
else:
|
|
return fkString
|
|
|
|
proc valueToWire(val: string, colType: string): WireValue =
|
|
if val == "\\N" or val.toLower() == "null":
|
|
return WireValue(kind: fkNull)
|
|
let t = colType.toUpper()
|
|
if t.startsWith("INT") or t == "SERIAL" or t == "BIGINT" or t == "SMALLINT" or t == "BIGSERIAL" or t == "SMALLSERIAL":
|
|
try:
|
|
return WireValue(kind: fkInt64, int64Val: parseInt(val))
|
|
except: discard
|
|
elif t.startsWith("FLOAT") or t == "REAL" or t == "DOUBLE" or t == "NUMERIC" or t.startsWith("DOUBLE"):
|
|
try:
|
|
return WireValue(kind: fkFloat64, float64Val: parseFloat(val))
|
|
except: discard
|
|
elif t == "BOOLEAN" or t == "BOOL":
|
|
let lv = val.toLower()
|
|
if lv in ["true", "t", "yes", "1"]:
|
|
return WireValue(kind: fkBool, boolVal: true)
|
|
elif lv in ["false", "f", "no", "0"]:
|
|
return WireValue(kind: fkBool, boolVal: false)
|
|
elif t == "JSON" or t == "JSONB":
|
|
return WireValue(kind: fkJson, jsonVal: val)
|
|
return WireValue(kind: fkString, strVal: val)
|
|
|
|
proc executeQuery(db: LSMTree, ctx: ExecutionContext, query: string, params: seq[WireValue] = @[],
|
|
replication: ReplicationManager = nil): (bool, QueryResult, string) =
|
|
try:
|
|
let tokens = tokenize(query)
|
|
let astNode = parse(tokens)
|
|
|
|
if astNode.stmts.len == 0:
|
|
return (true, QueryResult(), "")
|
|
|
|
let res = executor.executeQuery(ctx, astNode, params)
|
|
if res.success:
|
|
# Ship written key-value pairs to replicas
|
|
if replication != nil and res.keyValuePairs.len > 0:
|
|
for (key, value) in res.keyValuePairs:
|
|
var data = newSeq[byte](key.len + 1 + value.len)
|
|
for i, c in key: data[i] = byte(c)
|
|
data[key.len] = byte(0)
|
|
for i, c in value: data[key.len + 1 + i] = c
|
|
discard replication.writeLsn(data)
|
|
var qr = QueryResult(affectedRows: res.affectedRows, rowCount: res.rows.len)
|
|
qr.columns = res.columns
|
|
|
|
var colTypes: seq[string] = @[]
|
|
var tableName = ""
|
|
if astNode.stmts[0].kind == nkSelect and astNode.stmts[0].selFrom != nil:
|
|
tableName = astNode.stmts[0].selFrom.fromTable
|
|
elif astNode.stmts[0].kind == nkInsert:
|
|
tableName = astNode.stmts[0].insTarget
|
|
elif astNode.stmts[0].kind == nkUpdate:
|
|
tableName = astNode.stmts[0].updTarget
|
|
|
|
if tableName.len > 0 and tableName in ctx.tables:
|
|
let tbl = ctx.tables[tableName]
|
|
for col in res.columns:
|
|
var found = ""
|
|
for c in tbl.columns:
|
|
if c.name.toLower() == col.toLower():
|
|
found = c.colType
|
|
break
|
|
colTypes.add(found)
|
|
else:
|
|
colTypes = newSeq[string](res.columns.len)
|
|
|
|
qr.columnTypes = colTypes.mapIt(typeToFieldKind(it))
|
|
qr.rows = @[]
|
|
for row in res.rows:
|
|
var wireRow: seq[WireValue] = @[]
|
|
for i, col in res.columns:
|
|
let val = if col in row: row[col] else: "\\N"
|
|
let cType = if i < colTypes.len: colTypes[i] else: ""
|
|
wireRow.add(valueToWire(val, cType))
|
|
qr.rows.add(wireRow)
|
|
return (true, qr, res.message)
|
|
else:
|
|
return (false, QueryResult(), res.message)
|
|
except Exception as e:
|
|
return (false, QueryResult(), e.msg)
|
|
|
|
# ----------------------------------------------------------------------
|
|
# Response Serialization
|
|
# ----------------------------------------------------------------------
|
|
|
|
proc serializeResult(qr: QueryResult, requestId: uint32): seq[byte] =
|
|
var payload: seq[byte] = @[]
|
|
payload.writeUint32(uint32(qr.columns.len))
|
|
for col in qr.columns:
|
|
payload.writeString(col)
|
|
for ct in qr.columnTypes:
|
|
payload.add(byte(ct))
|
|
payload.writeUint32(uint32(qr.rows.len))
|
|
for row in qr.rows:
|
|
for val in row:
|
|
payload.serializeValue(val)
|
|
|
|
var msg = WireMessage(
|
|
header: MessageHeader(kind: mkData, length: uint32(payload.len), requestId: requestId),
|
|
payload: payload,
|
|
)
|
|
return serializeMessage(msg)
|
|
|
|
proc serializeComplete(affectedRows: int, requestId: uint32): 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)
|
|
|
|
proc serializeError(errorCode: uint32, message: string, requestId: uint32): seq[byte] =
|
|
var payload: seq[byte] = @[]
|
|
payload.writeUint32(errorCode)
|
|
payload.writeString(message)
|
|
var msg = WireMessage(
|
|
header: MessageHeader(kind: mkError, length: uint32(payload.len), requestId: requestId),
|
|
payload: payload,
|
|
)
|
|
return serializeMessage(msg)
|
|
|
|
# ----------------------------------------------------------------------
|
|
# Client Handler
|
|
# ----------------------------------------------------------------------
|
|
|
|
proc recvExact(client: AsyncSocket, size: int): Future[string] {.async.} =
|
|
var buf = ""
|
|
while buf.len < size:
|
|
let chunk = await client.recv(size - buf.len)
|
|
if chunk.len == 0:
|
|
break
|
|
buf.add(chunk)
|
|
return buf
|
|
|
|
proc recvExactWithTimeout(client: AsyncSocket, size: int, timeoutMs: int): Future[string] {.async.} =
|
|
if timeoutMs <= 0:
|
|
return await client.recvExact(size)
|
|
let fut = client.recvExact(size)
|
|
let ok = await withTimeout(fut, timeoutMs)
|
|
if ok:
|
|
return fut.read()
|
|
|
|
proc slowQueryLog(logPath: string, query: string, durationMs: int, clientId: int) =
|
|
if logPath.len == 0:
|
|
return
|
|
try:
|
|
let f = open(logPath, fmAppend)
|
|
defer: f.close()
|
|
let line = $getMonoTime().ticks() & " | " & $clientId & " | " & $durationMs & "ms | " & query & "\n"
|
|
f.write(line)
|
|
except: discard
|
|
|
|
proc verifyToken(secret, tokenStr: string): (bool, string, string) =
|
|
try:
|
|
let token = tokenStr.toJWT()
|
|
if not token.verify(secret, HS256):
|
|
return (false, "", "")
|
|
let userId = token.claims["sub"].node.str
|
|
let role = if "role" in token.claims: token.claims["role"].node.str else: "user"
|
|
return (true, userId, role)
|
|
except:
|
|
return (false, "", "")
|
|
|
|
proc recvWithTimeout(client: AsyncSocket, size: int, timeoutMs: int): Future[string] {.async.} =
|
|
if timeoutMs <= 0:
|
|
return await client.recv(size)
|
|
let fut = client.recv(size)
|
|
let timeoutFut = sleepAsync(timeoutMs)
|
|
await fut or timeoutFut
|
|
if fut.finished:
|
|
return fut.read()
|
|
return ""
|
|
|
|
proc handleClient(server: Server, client: AsyncSocket, clientId: int) {.async.} =
|
|
info("Client " & $clientId & " connected")
|
|
var connCtx = cloneForConnection(server.ctx)
|
|
let idleTimeout = server.config.idleTimeoutMs
|
|
let slowThreshold = server.config.slowQueryThresholdMs
|
|
let slowLog = server.config.slowQueryLogPath
|
|
var authenticated = not server.config.authEnabled
|
|
let secret = server.config.getEffectiveJwtSecret()
|
|
|
|
try:
|
|
while true:
|
|
let headerData = await client.recvExactWithTimeout(12, idleTimeout)
|
|
if headerData.len < 12:
|
|
break
|
|
|
|
# Detect text-based DISTTXN RPC (starts with "DISTTXN")
|
|
if headerData.len >= 7 and headerData[0..6] == "DISTTXN":
|
|
var rest = headerData[7..^1]
|
|
while '\n' notin rest:
|
|
let more = await client.recvWithTimeout(1024, idleTimeout)
|
|
if more.len == 0: break
|
|
rest.add(more)
|
|
let parts = rest.strip().split(" ")
|
|
if parts.len >= 2:
|
|
let txnId = try: uint64(parseBiggestUint(parts[0])) except: 0'u64
|
|
let action = parts[1].toUpper()
|
|
if server.distTxnManager != nil:
|
|
let txn = server.distTxnManager.getTxn(txnId)
|
|
if action == "PREPARE":
|
|
if txn != nil:
|
|
await client.send("OK\n")
|
|
else:
|
|
await client.send("ERR unknown transaction\n")
|
|
elif action == "COMMIT":
|
|
if txn != nil and txn.state() == dtsPrepared:
|
|
await client.send("OK\n")
|
|
else:
|
|
await client.send("ERR not prepared\n")
|
|
elif action == "ROLLBACK":
|
|
if txn != nil:
|
|
await client.send("OK\n")
|
|
else:
|
|
await client.send("OK\n")
|
|
else:
|
|
await client.send("ERR unknown action\n")
|
|
else:
|
|
await client.send("OK\n")
|
|
else:
|
|
await client.send("ERR invalid message\n")
|
|
continue
|
|
|
|
# Detect replication data (starts with "REP ")
|
|
if headerData.len >= 4 and headerData[0..3] == "REP ":
|
|
var rest = headerData[4..^1]
|
|
while '\n' notin rest:
|
|
let more = await client.recvWithTimeout(1024, idleTimeout)
|
|
if more.len == 0: break
|
|
rest.add(more)
|
|
let parts = rest.strip().split(" ")
|
|
if parts.len >= 2:
|
|
let lsn = try: parseUInt(parts[0]) except: 0'u64
|
|
let dataLen = try: parseInt(parts[1]) except: 0
|
|
if dataLen > 0:
|
|
var data = ""
|
|
while data.len < dataLen:
|
|
let chunk = await client.recvWithTimeout(dataLen - data.len, idleTimeout)
|
|
if chunk.len == 0: break
|
|
data.add(chunk)
|
|
if data.len > 0:
|
|
let nullPos = data.find('\0')
|
|
if nullPos >= 0:
|
|
let key = data[0..<nullPos]
|
|
let value = data[nullPos+1..^1]
|
|
if value.len > 0:
|
|
server.db.put(key, cast[seq[byte]](value))
|
|
else:
|
|
server.db.delete(key)
|
|
await client.send("ACK " & $lsn & "\n")
|
|
else:
|
|
await client.send("ERR\n")
|
|
continue
|
|
|
|
# Detect shard migration data (starts with "MIGRATE ")
|
|
if headerData.len >= 8 and headerData[0..7] == "MIGRATE ":
|
|
var rest = headerData[8..^1]
|
|
while '\n' notin rest:
|
|
let more = await client.recvWithTimeout(1024, idleTimeout)
|
|
if more.len == 0: break
|
|
rest.add(more)
|
|
let headerLine = "MIGRATE " & rest.strip()
|
|
let parts = rest.strip().split(" ")
|
|
if parts.len >= 2:
|
|
let entryCount = try: parseInt(parts[1]) except: 0
|
|
var data = ""
|
|
if entryCount > 0:
|
|
# Read all entries (each entry is key\0value\n)
|
|
# Estimate buffer: 512 bytes per entry
|
|
let maxSize = min(entryCount * 1024, 10 * 1024 * 1024)
|
|
var received = 0
|
|
while received < maxSize:
|
|
let chunk = await client.recvWithTimeout(4096, idleTimeout)
|
|
if chunk.len == 0: break
|
|
data.add(chunk)
|
|
received += chunk.len
|
|
# Count newlines to know when we have all entries
|
|
var newlineCount = 0
|
|
for c in chunk:
|
|
if c == '\n': inc newlineCount
|
|
if newlineCount >= entryCount:
|
|
break
|
|
let response = handleMigrationMessage(headerLine, data, server.shardRouter)
|
|
await client.send(response)
|
|
else:
|
|
await client.send("ERR invalid migrate header\n")
|
|
continue
|
|
|
|
let (ok, header) = parseHeader(headerData)
|
|
if not ok:
|
|
break
|
|
|
|
var payload = ""
|
|
if header.length > 0:
|
|
payload = await client.recvExactWithTimeout(int(header.length), idleTimeout)
|
|
if payload.len < int(header.length):
|
|
break
|
|
|
|
if not authenticated and header.kind != mkAuth:
|
|
let err = makeErrorMessage(header.requestId, 401, "Authentication required")
|
|
await client.send(cast[string](err))
|
|
continue
|
|
|
|
case header.kind
|
|
of mkAuth:
|
|
let tokenStr = parseAuthMessage(cast[seq[byte]](payload))
|
|
let (valid, userId, role) = verifyToken(secret, tokenStr)
|
|
if valid:
|
|
authenticated = true
|
|
connCtx.currentUser = userId
|
|
connCtx.currentRole = role
|
|
let okMsg = makeAuthOkMessage(header.requestId)
|
|
await client.send(cast[string](okMsg))
|
|
info("Client " & $clientId & " authenticated as " & userId)
|
|
else:
|
|
let err = makeErrorMessage(header.requestId, 403, "Invalid token")
|
|
await client.send(cast[string](err))
|
|
|
|
of mkQuery:
|
|
var pos = 0
|
|
let queryStr = readString(cast[seq[byte]](payload), pos)
|
|
info("[" & $clientId & "] Query: " & queryStr)
|
|
|
|
# Shard-aware routing: check if this node should handle the write
|
|
var shardCheck = true
|
|
if server.clusterMembership.nodes.len > 0:
|
|
let stmts = try: parse(tokenize(queryStr)) except: nil
|
|
if stmts != nil:
|
|
for stmt in stmts.stmts:
|
|
if stmt.kind in {nkInsert, nkUpdate, nkDelete}:
|
|
# If this node is not assigned to any shard, reject writes
|
|
let localShards = server.shardRouter.getShardForNode(
|
|
server.clusterMembership.localNodeId)
|
|
if localShards.len == 0:
|
|
shardCheck = false
|
|
let err = serializeError(3, "Node not assigned to any shard", header.requestId)
|
|
await client.send(cast[string](err))
|
|
break
|
|
|
|
if shardCheck:
|
|
let startTicks = getMonoTime().ticks()
|
|
let (success, result, errorMsg) = executeQuery(server.db, connCtx, queryStr, replication=server.replicationManager)
|
|
let durationMs = int((getMonoTime().ticks() - startTicks) div 1_000_000)
|
|
|
|
if durationMs >= slowThreshold:
|
|
slowQueryLog(slowLog, queryStr, durationMs, clientId)
|
|
|
|
if success:
|
|
let dataMsg = serializeResult(result, header.requestId)
|
|
await client.send(cast[string](dataMsg))
|
|
let completeMsg = serializeComplete(result.affectedRows, header.requestId)
|
|
await client.send(cast[string](completeMsg))
|
|
else:
|
|
let errorMsg = serializeError(1, errorMsg, header.requestId)
|
|
await client.send(cast[string](errorMsg))
|
|
|
|
of mkQueryParams:
|
|
let (queryStr, params) = readQueryParamsMessage(cast[seq[byte]](payload))
|
|
info("[" & $clientId & "] QueryParams: " & queryStr & " (" & $params.len & " params)")
|
|
|
|
let startTicks = getMonoTime().ticks()
|
|
let (success, result, errorMsg) = executeQuery(server.db, connCtx, queryStr, params, replication=server.replicationManager)
|
|
let durationMs = int((getMonoTime().ticks() - startTicks) div 1_000_000)
|
|
|
|
if durationMs >= slowThreshold:
|
|
slowQueryLog(slowLog, queryStr, durationMs, clientId)
|
|
|
|
if success:
|
|
let dataMsg = serializeResult(result, header.requestId)
|
|
await client.send(cast[string](dataMsg))
|
|
let completeMsg = serializeComplete(result.affectedRows, header.requestId)
|
|
await client.send(cast[string](completeMsg))
|
|
else:
|
|
let errorMsg = serializeError(1, errorMsg, header.requestId)
|
|
await client.send(cast[string](errorMsg))
|
|
|
|
of mkPing:
|
|
var pongMsg = WireMessage(
|
|
header: MessageHeader(kind: mkPong, length: 0, requestId: header.requestId),
|
|
payload: @[],
|
|
)
|
|
await client.send(cast[string](serializeMessage(pongMsg)))
|
|
|
|
of mkClose:
|
|
break
|
|
|
|
else:
|
|
let errorMsg = serializeError(2, "Unsupported message kind: " & $header.kind, header.requestId)
|
|
await client.send(cast[string](errorMsg))
|
|
|
|
except Exception as e:
|
|
errorMsg("Client " & $clientId & " error: " & e.msg)
|
|
finally:
|
|
if server.activeConnections > 0:
|
|
dec server.activeConnections
|
|
info("Client " & $clientId & " disconnected")
|
|
client.close()
|
|
|
|
proc run*(server: Server) {.async.} =
|
|
server.running = true
|
|
var clientId = 0
|
|
|
|
# Start gossip protocol if configured
|
|
if server.gossipProtocol != nil and server.gossipProtocol.gossipPort > 0:
|
|
server.gossipProtocol.startGossip()
|
|
info("Gossip protocol started on port " & $server.gossipProtocol.gossipPort)
|
|
|
|
let sock = newAsyncSocket()
|
|
sock.setSockOpt(OptReuseAddr, true)
|
|
sock.bindAddr(Port(server.config.port), server.config.address)
|
|
sock.listen()
|
|
if server.config.tlsEnabled:
|
|
info("BaraDB TLS listening on " & server.config.address & ":" & $server.config.port)
|
|
else:
|
|
info("BaraDB listening on " & server.config.address & ":" & $server.config.port)
|
|
while server.running:
|
|
let client = await sock.accept()
|
|
if server.config.maxConnections > 0 and server.activeConnections >= server.config.maxConnections:
|
|
client.close()
|
|
continue
|
|
if server.tls != nil:
|
|
try:
|
|
server.tls.wrapServer(client)
|
|
except Exception as e:
|
|
errorMsg("TLS handshake failed: " & e.msg)
|
|
client.close()
|
|
continue
|
|
inc clientId
|
|
inc server.activeConnections
|
|
asyncCheck server.handleClient(client, clientId)
|
|
|
|
proc stop*(server: Server) =
|
|
server.running = false
|
|
if server.gossipProtocol != nil:
|
|
server.gossipProtocol.stop()
|
|
server.db.close()
|