def _analyze()

in buildkite/bazel_auto_sheriff.py [0:0]
39 lines of code
13 McCabe index (conditional complexity)

    def _analyze(self):
        # Main build: PASSED; Downstream build: PASSED
        if self.main_result["state"] == "passed" and self.downstream_result["state"] == "passed":
            self._log_success("Main build: PASSED; Downstream build: PASSED")
            return

        # Main build: FAILED; Downstream build: PASSED
        if self.main_result["state"] == "failed" and self.downstream_result["state"] == "passed":
            self._log("FAIL", "Main build: FAILED")
            self._log("PASSED", "Downstream build: PASSED")
            self._analyze_main_pipeline_result()
            self._log("HEADER", "Analyzing finished.")
            return

        # Main build: PASSED; Downstream build: FAILED
        if self.main_result["state"] == "passed" and self.downstream_result["state"] == "failed":
            self._log("PASSED", "Main build: PASSED")
            self._log("FAIL", "Downstream build: FAILED")
            self._analyze_for_downstream_pipeline_result()
            self._log("HEADER", "Analyzing finished.")
            return

        # Main build: FAILED; Downstream build: FAILED
        if self.main_result["state"] == "failed" and self.downstream_result["state"] == "failed":
            self._log("FAIL", "Main build: FAILED")
            self._log("FAIL", "Downstream build: FAILED")

            last_green_commit = self.main_result["last_green_commit"]

            # If the lastest build is the last green commit, that means some infra change has caused the breakage.
            if last_green_commit == self.main_result["commit"]:
                self.broken_by_infra = True
                self._log("SERIOUS", f"Project failed at last green commit. This is probably caused by an infra change, please ping philwo@ or pcloudy@.")
                self._log("HEADER", "Analyzing finished.")
                return

            # Rebuild the project at last green commit, check if the failure is caused by infra change.
            self._log("PASSED", f"Rebuild at last green commit {last_green_commit}...")
            build_info = self.client.trigger_new_build(last_green_commit, "Trigger build at last green commit.")
            build_info = self.client.wait_build_to_finish(build_number = build_info["number"], logger = self)

            if build_info["state"] == "failed":
                self.broken_by_infra = True
                self._log("SERIOUS", f"Project failed at last green commit. This is probably caused by an infra change, please ping philwo@ or pcloudy@.")
            elif build_info["state"] == "passed":
                self._log("PASSED", f"Project succeeded at last green commit. Maybe main pipeline and downstream pipeline are broken for different reasons.")
                self._analyze_main_pipeline_result()
                self._analyze_for_downstream_pipeline_result()
            else:
                self._log("SERIOUS", f"Rebuilding project at last green commit failed with unknown reason. Please check " + build_info["web_url"])
            self._log("HEADER", "Analyzing finished.")
            return