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import json
import os
import time
from mitmproxy import http
class CaptureAddon:
def __init__(self):
self.output_dir = os.environ.get("CAPTURE_DIR", "/captures")
os.makedirs(self.output_dir, exist_ok=True)
self.counter = 0
def request(self, flow: http.HTTPFlow):
if "googleapis.com" not in (flow.request.host or ""):
return
self.counter += 1
flow.metadata["capture_id"] = self.counter
body = None
try:
body = json.loads(flow.request.get_text())
except Exception:
body = flow.request.get_text()
source = flow.request.headers.get("x-capture-source") or (
"gemini-cli" if "GeminiCLI" in flow.request.headers.get("user-agent", "") else "unknown"
)
data = {
"capture_id": self.counter,
"source": source,
"timestamp": time.time(),
"method": flow.request.method,
"url": flow.request.pretty_url,
"headers": dict(flow.request.headers),
"body": body,
}
path = os.path.join(self.output_dir, f"req_{self.counter:04d}.json")
with open(path, "w") as f:
json.dump(data, f, indent=2, default=str)
print(
f"[capture] #{self.counter} [{source}] {flow.request.method} {flow.request.pretty_url}"
)
def response(self, flow: http.HTTPFlow):
if "googleapis.com" not in (flow.request.host or ""):
return
capture_id = flow.metadata.get("capture_id")
if not capture_id:
return
body = None
try:
body = json.loads(flow.response.get_text())
except Exception:
body = flow.response.get_text()[:4000]
path = os.path.join(self.output_dir, f"res_{capture_id:04d}.json")
with open(path, "w") as f:
json.dump(
{
"status": flow.response.status_code,
"headers": dict(flow.response.headers),
"body": body,
},
f,
indent=2,
default=str,
)
addons = [CaptureAddon()]
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