mirror of https://github.com/waku-org/nwaku.git
106 lines
2.8 KiB
Nim
106 lines
2.8 KiB
Nim
## This code has been copied and addapted from `status-im/nimbu-eth2` project.
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## Link: https://github.com/status-im/nimbus-eth2/blob/c585b0a5b1ae4d55af38ad7f4715ad455e791552/beacon_chain/nimbus_binary_common.nim
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import
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std/[typetraits, os, strutils, syncio],
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chronicles,
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chronicles/log_output,
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chronicles/topics_registry
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export chronicles.LogLevel
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{.push raises: [].}
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type LogFormat* = enum
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TEXT
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JSON
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## Utils
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proc stripAnsi(v: string): string =
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## Copied from: https://github.com/status-im/nimbus-eth2/blob/stable/beacon_chain/nimbus_binary_common.nim#L41
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## Silly chronicles, colors is a compile-time property
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var
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res = newStringOfCap(v.len)
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i: int
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while i < v.len:
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let c = v[i]
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if c == '\x1b':
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var
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x = i + 1
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found = false
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while x < v.len: # look for [..m
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let c2 = v[x]
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if x == i + 1:
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if c2 != '[':
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break
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else:
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if c2 in {'0' .. '9'} + {';'}:
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discard # keep looking
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elif c2 == 'm':
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i = x + 1
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found = true
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break
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else:
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break
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inc x
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if found: # skip adding c
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continue
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res.add c
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inc i
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res
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proc writeAndFlush(f: syncio.File, s: LogOutputStr) =
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try:
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f.write(s)
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f.flushFile()
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except CatchableError:
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logLoggingFailure(cstring(s), getCurrentException())
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## Setup
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proc setupLogLevel(level: LogLevel) =
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# TODO: Support per topic level configuratio
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topics_registry.setLogLevel(level)
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proc setupLogFormat(format: LogFormat, color = true) =
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proc noOutputWriter(logLevel: LogLevel, msg: LogOutputStr) =
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discard
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proc stdoutOutputWriter(logLevel: LogLevel, msg: LogOutputStr) =
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writeAndFlush(syncio.stdout, msg)
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proc stdoutNoColorOutputWriter(logLevel: LogLevel, msg: LogOutputStr) =
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writeAndFlush(syncio.stdout, stripAnsi(msg))
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when defaultChroniclesStream.outputs.type.arity == 2:
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case format
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of LogFormat.Text:
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defaultChroniclesStream.outputs[0].writer =
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if color: stdoutOutputWriter else: stdoutNoColorOutputWriter
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defaultChroniclesStream.outputs[1].writer = noOutputWriter
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of LogFormat.Json:
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defaultChroniclesStream.outputs[0].writer = noOutputWriter
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defaultChroniclesStream.outputs[1].writer = stdoutOutputWriter
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else:
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{.
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warning:
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"the present module should be compiled with '-d:chronicles_default_output_device=dynamic' " &
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"and '-d:chronicles_sinks=\"textlines,json\"' options"
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.}
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proc setupLog*(level: LogLevel, format: LogFormat) =
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## Logging setup
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# Adhere to NO_COLOR initiative: https://no-color.org/
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let color =
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try:
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not parseBool(os.getEnv("NO_COLOR", "false"))
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except CatchableError:
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true
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setupLogLevel(level)
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setupLogFormat(format, color)
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