53 lines
1.9 KiB
Python
Executable file
53 lines
1.9 KiB
Python
Executable file
#!/usr/bin/env python3
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import argparse
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from typing import Any, Dict
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import zulip
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VERSION = "0.9"
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# Nagios passes the notification details as command line options.
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# In Nagios, "output" means "first line of output", and "long
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# output" means "other lines of output".
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parser = zulip.add_default_arguments(argparse.ArgumentParser()) # type: argparse.ArgumentParser
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parser.add_argument("--output", default="")
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parser.add_argument("--long-output", default="")
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parser.add_argument("--stream", default="nagios")
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parser.add_argument("--config", default="/etc/nagios3/zuliprc")
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for opt in ("type", "host", "service", "state"):
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parser.add_argument("--" + opt)
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opts = parser.parse_args()
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client = zulip.Client(
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config_file=opts.config, client="ZulipNagios/" + VERSION
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) # type: zulip.Client
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msg = dict(type="stream", to=opts.stream) # type: Dict[str, Any]
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# Set a subject based on the host or service in question. This enables
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# threaded discussion of multiple concurrent issues, and provides useful
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# context when narrowed.
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#
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# We send PROBLEM and RECOVERY messages to the same subject.
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if opts.service is None:
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# Host notification
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thing = "host"
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msg["subject"] = f"host {opts.host}"
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else:
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# Service notification
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thing = "service"
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msg["subject"] = f"service {opts.service} on {opts.host}"
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if len(msg["subject"]) > 60:
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msg["subject"] = msg["subject"][0:57].rstrip() + "..."
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# e.g. **PROBLEM**: service is CRITICAL
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msg["content"] = f"**{opts.type}**: {thing} is {opts.state}"
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# The "long output" can contain newlines represented by "\n" escape sequences.
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# The Nagios mail command uses /usr/bin/printf "%b" to expand these.
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# We will be more conservative and handle just this one escape sequence.
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output = (opts.output + "\n" + opts.long_output.replace(r"\n", "\n")).strip()
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if output:
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# Put any command output in a code block.
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msg["content"] += "\n\n~~~~\n" + output + "\n~~~~\n"
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client.send_message(msg)
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