47 lines
1.5 KiB
Nim
47 lines
1.5 KiB
Nim
# this module will be further extended in PR
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# https://github.com/status-im/nim-libp2p/pull/107/
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import chronos
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import chronicles
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import macros
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type
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# Base exception type for libp2p
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LPError* = object of CatchableError
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func toException*(e: cstring): ref LPError =
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(ref LPError)(msg: $e)
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func toException*(e: string): ref LPError =
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(ref LPError)(msg: e)
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# TODO: could not figure how to make it with a simple template
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# sadly nim needs more love for hygienic templates
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# so here goes the macro, its based on the proc/template version
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# and uses quote do so it's quite readable
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# TODO https://github.com/nim-lang/Nim/issues/22936
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macro checkFutures*[F](futs: seq[F], exclude: untyped = []): untyped =
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let nexclude = exclude.len
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case nexclude
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of 0:
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quote do:
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for res in `futs`:
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if res.failed:
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let exc = res.readError()
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# We still don't abort but warn
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debug "A future has failed, enable trace logging for details", error = exc.name
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trace "Exception message", msg= exc.msg, stack = getStackTrace()
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else:
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quote do:
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for res in `futs`:
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block check:
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if res.failed:
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let exc = res.readError()
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for i in 0..<`nexclude`:
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if exc of `exclude`[i]:
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trace "A future has failed", error=exc.name, msg=exc.msg
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break check
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# We still don't abort but warn
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debug "A future has failed, enable trace logging for details", error=exc.name
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trace "Exception details", msg=exc.msg
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