monitor: include build_result in jsonseq monitor streaming

In order to avoid having to rely on the output of `osbuild --json`
when using `--progress=JSONSeqMonitor` the monitor needs to include
the `osbuild.pipeline.BuildResult` for each individual stage.

This commit adds those to the montior.

osbuild/monitor.py

@@ -163,9 +163,12 @@ def as_dict(self):
         return d
 
 
-def log_entry(message: Optional[str] = None,
-              context: Optional[Context] = None,
-              progress: Optional[Progress] = None) -> dict:
+def log_entry(
+        message: Optional[str] = None,
+        context: Optional[Context] = None,
+        progress: Optional[Progress] = None,
+        build_result: Optional[osbuild.pipeline.BuildResult] = None,
+) -> dict:
     """
     Create a single log entry dict with a given message, context, and progress objects.
     All arguments are optional. A timestamp is added to the message.
@@ -174,6 +177,7 @@ def log_entry(message: Optional[str] = None,
     # monitors support that
     return omitempty({
         "message": message,
+        "build_result": build_result.as_dict() if build_result else None,
         "context": context.as_dict() if context else None,
         "progress": progress.as_dict() if progress else None,
         "timestamp": time.time(),
@@ -254,7 +258,7 @@ def __init__(self, fd: int, total_steps: int = 0):
         super().__init__(fd, total_steps)
         self.timer_start = 0
 
-    def result(self, result):
+    def result(self, result: osbuild.pipeline.BuildResult):
         duration = int(time.time() - self.timer_start)
         self.out.write(f"\n⏱  Duration: {duration}s\n")
 
@@ -339,13 +343,25 @@ def result(self, result: osbuild.pipeline.BuildResult):
         # we may need to check pipeline ids here in the future
         if self._progress.sub_progress:
             self._progress.sub_progress.incr()
-        self.log(f"Finished module {result.name}", origin="osbuild.monitor")
+
+        self._jsonseq(log_entry(
+            f"Finished module {result.name}",
+            context=self._context.with_origin("osbuild.monitor"),
+            progress=self._progress,
+            # We should probably remove the "output" key from the result
+            # as it is redundant, each output already generates a "log()"
+            # message that is streamed to the client.
+            build_result=result,
+        ))
 
     def log(self, message, origin: Optional[str] = None):
-        entry = log_entry(message, self._context.with_origin(origin), self._progress)
-        self._jsonseq(entry)
+        self._jsonseq(log_entry(
+            message,
+            context=self._context.with_origin(origin),
+            progress=self._progress,
+        ))
 
-    def _jsonseq(self, entry):
+    def _jsonseq(self, entry: dict) -> None:
         # follow rfc7464 (application/json-seq)
         self.out.write("\x1e")
         json.dump(entry, self.out)

test/mod/test_monitor.py

@@ -208,7 +208,7 @@ def test_json_progress_monitor():
         mon.log("pipeline 1 message 2")
         mon.log("pipeline 1 finished", origin="org.osbuild")
         mon.result(osbuild.pipeline.BuildResult(
-            fake_noop_stage, returncode=0, output="output", error=None))
+            fake_noop_stage, returncode=0, output="some output", error=None))
         mon.finish({"success": True, "name": "test-pipeline-first"})
         mon.begin(manifest.pipelines["test-pipeline-second"])
         mon.log("pipeline 2 starting", origin="org.osbuild")
@@ -268,6 +268,12 @@ def test_json_progress_monitor():
         logitem = json.loads(log[i])
         assert logitem["message"] == "Finished module org.osbuild.noop"
         assert logitem["context"]["id"] == id_start_module
+        assert logitem["build_result"] == {
+            "id": fake_noop_stage.id,
+            "name": "org.osbuild.noop",
+            "output": "some output",
+            "success": True,
+        }
         i += 1
 
         logitem = json.loads(log[i])