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Pipe CC task via stdin and capture stderr #161

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Merged
ElleNajt merged 1 commit into from
May 7, 2026
Merged

Pipe CC task via stdin and capture stderr #161

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9 changes: 8 additions & 1 deletion safetytooling/infra/cloud_run/claude_code_client.py
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Original file line number Diff line number Diff line change
Expand Up @@ -195,6 +195,7 @@ class ClaudeCodeResult:
returncode: int
duration_seconds: float
error: Exception | None = None # Set if this task failed
stderr: str = "" # Cloud Run stderr

@property
def success(self) -> bool:
Expand Down Expand Up @@ -307,7 +308,12 @@ def _build_claude_command(
# Use 'su claude' (not 'su - claude') to preserve environment including ANTHROPIC_API_KEY
echo "Starting Claude Code..."
set +e
su claude -c 'cd /workspace && /tmp/pre_claude.sh && claude {claude_flags_str} {system_prompt_arg} "$(cat /tmp/task.txt)"; echo $? > /tmp/claude_exitcode.txt; /tmp/post_claude.sh'
su claude -c 'cd /workspace && /tmp/pre_claude.sh && cat /tmp/task.txt | claude {claude_flags_str} {system_prompt_arg} 2>/tmp/claude_stderr.txt; echo $? > /tmp/claude_exitcode.txt; /tmp/post_claude.sh'
if [ -f /tmp/claude_stderr.txt ] && [ -s /tmp/claude_stderr.txt ]; then
echo "=== Claude Code stderr ==="
cat /tmp/claude_stderr.txt
echo "=== End stderr ==="
fi
CLAUDE_EXIT=$?
set -e

Expand Down Expand Up @@ -471,6 +477,7 @@ def _convert_result(cloud_run_result: CloudRunResult) -> ClaudeCodeResult:
returncode=cloud_run_result.returncode,
duration_seconds=cloud_run_result.duration_seconds,
error=cloud_run_result.error,
stderr=cloud_run_result.stderr,
)


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