nwaku/apps/networkmonitor/networkmonitor_metrics.nim

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when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
import
std/[json,tables,sequtils],
chronicles,
chronicles/topics_registry,
chronos,
json_serialization,
metrics,
metrics/chronos_httpserver,
presto/route,
presto/server,
stew/results,
stew/shims/net
logScope:
topics = "networkmonitor_metrics"
# On top of our custom metrics, the following are reused from nim-eth
#routing_table_nodes{state=""}
#routing_table_nodes{state="seen"}
#discovery_message_requests_outgoing_total{response=""}
#discovery_message_requests_outgoing_total{response="no_response"}
declarePublicGauge networkmonitor_peer_type_as_per_enr,
"Number of peers supporting each capability according to the ENR",
labels = ["capability"]
declarePublicGauge networkmonitor_peer_type_as_per_protocol,
"Number of peers supporting each protocol, after a successful connection) ",
labels = ["protocols"]
declarePublicGauge networkmonitor_peer_user_agents,
"Number of peers with each user agent",
labels = ["user_agent"]
declarePublicHistogram networkmonitor_peer_ping,
"Histogram tracking ping durations for discovered peers",
buckets = [100.0, 200.0, 300.0, 400.0, 500.0, 600.0, 700.0, 800.0, 900.0, 1000.0, 2000.0, Inf]
declarePublicGauge networkmonitor_peer_count,
"Number of discovered peers",
labels = ["connected"]
declarePublicGauge networkmonitor_peer_country_count,
"Number of peers per country",
labels = ["country"]
type
CustomPeerInfo* = object
# populated after discovery
lastTimeDiscovered*: int64
discovered*: int64
peerId*: string
enr*: string
ip*: string
enrCapabilities*: seq[string]
country*: string
city*: string
# only after ok connection
lastTimeConnected*: int64
retries*: int64
supportedProtocols*: seq[string]
userAgent*: string
lastPingDuration*: Duration
avgPingDuration*: Duration
# only after a ok/nok connection
connError*: string
CustomPeerInfoRef* = ref CustomPeerInfo
# Stores information about all discovered/connected peers
CustomPeersTableRef* = TableRef[string, CustomPeerInfoRef]
# stores the content topic and the count of rx messages
ContentTopicMessageTableRef* = TableRef[string, int]
proc installHandler*(router: var RestRouter,
allPeers: CustomPeersTableRef,
numMessagesPerContentTopic: ContentTopicMessageTableRef) =
router.api(MethodGet, "/allpeersinfo") do () -> RestApiResponse:
let values = toSeq(allPeers.values())
return RestApiResponse.response(values.toJson(), contentType="application/json")
router.api(MethodGet, "/contenttopics") do () -> RestApiResponse:
# TODO: toJson() includes the hash
return RestApiResponse.response($(%numMessagesPerContentTopic), contentType="application/json")
proc startMetricsServer*(serverIp: IpAddress, serverPort: Port): Result[void, string] =
info "Starting metrics HTTP server", serverIp, serverPort
try:
startMetricsHttpServer($serverIp, serverPort)
except Exception as e:
error("Failed to start metrics HTTP server", serverIp=serverIp, serverPort=serverPort, msg=e.msg)
info "Metrics HTTP server started", serverIp, serverPort
ok()