1 files changed, 66 insertions, 0 deletions
diff --git a/src/core/lib/surface/event_string.cc b/src/core/lib/surface/event_string.cc
new file mode 100644
index 0000000000..f236272e2a
--- /dev/null
+++ b/src/core/lib/surface/event_string.cc
@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include "src/core/lib/surface/event_string.h"
+
+#include <stdio.h>
+
+#include <grpc/byte_buffer.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/support/string.h"
+
+static void addhdr(gpr_strvec *buf, grpc_event *ev) {
+  char *tmp;
+  gpr_asprintf(&tmp, "tag:%p", ev->tag);
+  gpr_strvec_add(buf, tmp);
+}
+
+static const char *errstr(int success) { return success ? "OK" : "ERROR"; }
+
+static void adderr(gpr_strvec *buf, int success) {
+  char *tmp;
+  gpr_asprintf(&tmp, " %s", errstr(success));
+  gpr_strvec_add(buf, tmp);
+}
+
+char *grpc_event_string(grpc_event *ev) {
+  char *out;
+  gpr_strvec buf;
+
+  if (ev == NULL) return gpr_strdup("null");
+
+  gpr_strvec_init(&buf);
+
+  switch (ev->type) {
+    case GRPC_QUEUE_TIMEOUT:
+      gpr_strvec_add(&buf, gpr_strdup("QUEUE_TIMEOUT"));
+      break;
+    case GRPC_QUEUE_SHUTDOWN:
+      gpr_strvec_add(&buf, gpr_strdup("QUEUE_SHUTDOWN"));
+      break;
+    case GRPC_OP_COMPLETE:
+      gpr_strvec_add(&buf, gpr_strdup("OP_COMPLETE: "));
+      addhdr(&buf, ev);
+      adderr(&buf, ev->success);
+      break;
+  }
+
+  out = gpr_strvec_flatten(&buf, NULL);
+  gpr_strvec_destroy(&buf);
+  return out;
+}