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#! /usr/bin/env python3
import sys
import json
usage = """Usage: mergeResourceJson.py FILE [FILE ...]
Merge the content of multiple "resources.json" files produced by the FastTimerService,
and print the result to standard output.
Example:
mergeResourceJson.py step*/pid*/resources.json > resources.json
"""
def merge_into(metrics, data, dest):
dest["events"] += data["events"]
for metric in metrics:
dest[metric] += data[metric]
def convert_old_resources(resources, filename):
mapping = {
"time_real": {"name": "time_real", "description": "real time", "unit": "ms", "title": "Time"},
"time_thread": {"name": "time_thread", "description": "cpu time", "unit": "ms", "title": "Time"},
"mem_alloc": {"name": "mem_alloc", "description": "allocated memory", "unit": "kB", "title": "Memory"},
"mem_free": {"name": "mem_free", "description": "deallocated memory", "unit": "kB", "title": "Memory"}
}
new_resources = []
for resource in resources:
# check if the keys "name", "description", "unit" and "title" are present
if all(key in resource for key in ["name", "description", "unit", "title"]):
new_resources.append(resource)
elif any(key in resource for key in ["name", "description", "unit", "title"]):
print("Error: incomplete resource description in file " + filename)
sys.exit(1)
else:
for key, _ in resource.items():
if key in mapping:
new_resources.append(mapping[key])
else:
new_resources.append(resource)
return new_resources
if len(sys.argv) == 1:
print(usage)
sys.exit(1)
if '-h' in sys.argv[1:] or '--help' in sys.argv[1:]:
print(usage)
sys.exit(0)
with open(sys.argv[1]) as f:
output = json.load(f)
output["resources"] = convert_old_resources(output["resources"], sys.argv[1])
metrics = []
for resource in output["resources"]:
if "name" in resource:
metrics.append(resource["name"])
else:
for key in resource:
metrics.append(key)
datamap = { module["type"] + '|' + module["label"] : module for module in output["modules"] }
for arg in sys.argv[2:]:
with open(arg) as f:
input = json.load(f)
input["resources"] = convert_old_resources(input["resources"], arg)
if output["resources"] != input["resources"]:
print("Error: input files describe different metrics")
sys.exit(1)
if output["total"]["label"] != input["total"]["label"]:
print("Warning: input files describe different process names")
merge_into(metrics, input["total"], output["total"])
for module in input["modules"]:
key = module["type"] + '|' + module["label"]
if key in datamap:
merge_into(metrics, module, datamap[key])
else:
datamap[key] = module
output["modules"].append(datamap[key])
json.dump(output, sys.stdout, indent = 2 )
sys.stdout.write('\n')
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