add stream metrics (#136)

* add stream metrics

- just BufferStream and Connection are tracked, for now
- flag checking is enforced more strictly in close(), since it became
  clear that instances are closed multiple times

* add "metrics" dependency

and sort the list
This commit is contained in:
Ștefan Talpalaru 2020-04-14 15:27:07 +02:00 committed by GitHub
parent 7723403b1f
commit eaa73ae6e8
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4 changed files with 34 additions and 22 deletions

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@ -8,11 +8,12 @@ license = "MIT"
skipDirs = @["tests", "examples", "Nim"]
requires "nim > 0.19.4",
"secp256k1",
"nimcrypto >= 0.4.1",
"chronos >= 2.3.8",
"bearssl >= 0.1.4",
"chronicles >= 0.7.1",
"chronos >= 2.3.8",
"metrics",
"nimcrypto >= 0.4.1",
"secp256k1",
"stew"
proc runTest(filename: string) =

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@ -7,7 +7,8 @@
## This file may not be copied, modified, or distributed except according to
## those terms.
import chronos, chronicles, oids
import oids
import chronos, chronicles, metrics
import peerinfo,
multiaddress,
stream/lpstream,
@ -29,6 +30,8 @@ type
InvalidVarintException = object of LPStreamError
InvalidVarintSizeException = object of LPStreamError
declareGauge libp2p_open_connection, "open Connection instances"
proc newInvalidVarintException*(): ref InvalidVarintException =
newException(InvalidVarintException, "Unable to parse varint")
@ -57,6 +60,7 @@ proc init*[T: Connection](self: var T, stream: LPStream): T =
when chronicles.enabledLogLevel == LogLevel.TRACE:
self.oid = genOid()
asyncCheck self.bindStreamClose()
libp2p_open_connection.inc()
return self
@ -117,11 +121,11 @@ method closed*(s: Connection): bool =
result = s.stream.closed
method close*(s: Connection) {.async, gcsafe.} =
trace "about to close connection", closed = s.closed,
peer = if not isNil(s.peerInfo):
s.peerInfo.id else: ""
if not s.closed:
trace "about to close connection", closed = s.closed,
peer = if not isNil(s.peerInfo):
s.peerInfo.id else: ""
if not isNil(s.stream) and not s.stream.closed:
trace "closing child stream", closed = s.closed,
peer = if not isNil(s.peerInfo):
@ -131,9 +135,10 @@ method close*(s: Connection) {.async, gcsafe.} =
s.closeEvent.fire()
s.isClosed = true
trace "connection closed", closed = s.closed,
peer = if not isNil(s.peerInfo):
s.peerInfo.id else: ""
trace "connection closed", closed = s.closed,
peer = if not isNil(s.peerInfo):
s.peerInfo.id else: ""
libp2p_open_connection.dec()
proc readLp*(s: Connection): Future[seq[byte]] {.async, gcsafe.} =
## read lenght prefixed msg

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@ -8,8 +8,7 @@
## those terms.
import options
import chronos
import chronicles
import chronos, chronicles
import ../protocol,
../../stream/bufferstream,
../../crypto/crypto,

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@ -31,7 +31,7 @@
## buffer goes below ``maxSize`` or more data becomes available.
import deques, math, oids
import chronos, chronicles
import chronos, chronicles, metrics
import ../stream/lpstream
const DefaultBufferSize* = 1024
@ -52,6 +52,8 @@ type
AlreadyPipedError* = object of CatchableError
NotWritableError* = object of CatchableError
declareGauge libp2p_open_bufferstream, "open BufferStream instances"
proc newAlreadyPipedError*(): ref Exception {.inline.} =
result = newException(AlreadyPipedError, "stream already piped")
@ -77,6 +79,8 @@ proc initBufferStream*(s: BufferStream,
s.closeEvent = newAsyncEvent()
when chronicles.enabledLogLevel == LogLevel.TRACE:
s.oid = genOid()
s.isClosed = false
libp2p_open_bufferstream.inc()
proc newBufferStream*(handler: WriteHandler = nil,
size: int = DefaultBufferSize): BufferStream =
@ -386,11 +390,14 @@ proc `|`*(s: BufferStream, target: BufferStream): BufferStream =
method close*(s: BufferStream) {.async.} =
## close the stream and clear the buffer
trace "closing bufferstream"
for r in s.readReqs:
if not(isNil(r)) and not(r.finished()):
r.fail(newLPStreamEOFError())
s.dataReadEvent.fire()
s.readBuf.clear()
s.closeEvent.fire()
s.isClosed = true
if not s.isClosed:
trace "closing bufferstream"
for r in s.readReqs:
if not(isNil(r)) and not(r.finished()):
r.fail(newLPStreamEOFError())
s.dataReadEvent.fire()
s.readBuf.clear()
s.closeEvent.fire()
s.isClosed = true
libp2p_open_bufferstream.dec()