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bc68d8424d
- add mongosymb_multithread.py
- mongosymb.py argparse and slight refactor for reuse.
create mode 100755 buildscripts/mongosymb_multithread.py
67 lines
2.2 KiB
Python
Executable File
67 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Script for symbolizing multithread MongoDB stack traces.
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Accepts mongod multithread stacktrace lines. These are produced by hitting mongod with SIGUSR2.
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Assembles json documents which are fed to the mongosymb library. See mongosymb.py.
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"""
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import argparse
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import json
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import re
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import subprocess
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import sys
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import mongosymb
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def main():
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"""Execute Main program."""
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parent_parser = mongosymb.make_argument_parser(add_help=False)
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parser = argparse.ArgumentParser(parents=[parent_parser], description=__doc__, add_help=True)
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options = parser.parse_args()
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# Remember the prologue between lines,
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# Prologue defines the library ids referred to by each threadRecord line.
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prologue = None
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for line in sys.stdin:
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try:
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doc = json.JSONDecoder().raw_decode(line)[0]
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if "attr" not in doc:
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continue
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attr = doc["attr"]
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if "prologue" in attr:
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prologue = attr["prologue"]
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if "threadRecord" in attr:
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thread_record = attr["threadRecord"]
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merged = {**thread_record, **prologue}
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output_fn = None
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if options.output_format == 'json':
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output_fn = json.dump
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if options.output_format == 'classic':
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output_fn = mongosymb.classic_output
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resolver = None
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if options.debug_file_resolver == 'path':
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resolver = mongosymb.PathDbgFileResolver(options.path_to_executable)
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elif options.debug_file_resolver == 's3':
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resolver = mongosymb.S3BuildidDbgFileResolver(options.s3_cache_dir,
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options.s3_bucket)
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frames = mongosymb.symbolize_frames(merged, resolver, **vars(options))
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print("\nthread {{name='{}', tid={}}}:".format(thread_record["name"],
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thread_record["tid"]))
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output_fn(frames, sys.stdout, indent=2)
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except json.JSONDecodeError:
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print("failed to parse line: `{}`".format(line), file=sys.stderr)
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if __name__ == '__main__':
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main()
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sys.exit(0)
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