--- /dev/null
+/*
+ *
+ * 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 <grpc/support/port_platform.h>
+
+#include "src/core/lib/channel/channel_stack.h"
+
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/string_util.h>
+#include "src/core/lib/gpr/string.h"
+#include "src/core/lib/slice/slice_string_helpers.h"
+#include "src/core/lib/transport/connectivity_state.h"
+
+/* These routines are here to facilitate debugging - they produce string
+ representations of various transport data structures */
+
+static void put_metadata(gpr_strvec* b, grpc_mdelem md) {
+ gpr_strvec_add(b, gpr_strdup("key="));
+ gpr_strvec_add(
+ b, grpc_dump_slice(GRPC_MDKEY(md), GPR_DUMP_HEX | GPR_DUMP_ASCII));
+
+ gpr_strvec_add(b, gpr_strdup(" value="));
+ gpr_strvec_add(
+ b, grpc_dump_slice(GRPC_MDVALUE(md), GPR_DUMP_HEX | GPR_DUMP_ASCII));
+}
+
+static void put_metadata_list(gpr_strvec* b, grpc_metadata_batch md) {
+ grpc_linked_mdelem* m;
+ for (m = md.list.head; m != nullptr; m = m->next) {
+ if (m != md.list.head) gpr_strvec_add(b, gpr_strdup(", "));
+ put_metadata(b, m->md);
+ }
+ if (md.deadline != GRPC_MILLIS_INF_FUTURE) {
+ char* tmp;
+ gpr_asprintf(&tmp, " deadline=%" PRId64, md.deadline);
+ gpr_strvec_add(b, tmp);
+ }
+}
+
+char* grpc_transport_stream_op_batch_string(
+ grpc_transport_stream_op_batch* op) {
+ char* tmp;
+ char* out;
+
+ gpr_strvec b;
+ gpr_strvec_init(&b);
+
+ if (op->send_initial_metadata) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ gpr_strvec_add(&b, gpr_strdup("SEND_INITIAL_METADATA{"));
+ put_metadata_list(
+ &b, *op->payload->send_initial_metadata.send_initial_metadata);
+ gpr_strvec_add(&b, gpr_strdup("}"));
+ }
+
+ if (op->send_message) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ if (op->payload->send_message.send_message != nullptr) {
+ gpr_asprintf(&tmp, "SEND_MESSAGE:flags=0x%08x:len=%d",
+ op->payload->send_message.send_message->flags(),
+ op->payload->send_message.send_message->length());
+ } else {
+ // This can happen when we check a batch after the transport has
+ // processed and cleared the send_message op.
+ tmp =
+ gpr_strdup("SEND_MESSAGE(flag and length unknown, already orphaned)");
+ }
+ gpr_strvec_add(&b, tmp);
+ }
+
+ if (op->send_trailing_metadata) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ gpr_strvec_add(&b, gpr_strdup("SEND_TRAILING_METADATA{"));
+ put_metadata_list(
+ &b, *op->payload->send_trailing_metadata.send_trailing_metadata);
+ gpr_strvec_add(&b, gpr_strdup("}"));
+ }
+
+ if (op->recv_initial_metadata) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ gpr_strvec_add(&b, gpr_strdup("RECV_INITIAL_METADATA"));
+ }
+
+ if (op->recv_message) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ gpr_strvec_add(&b, gpr_strdup("RECV_MESSAGE"));
+ }
+
+ if (op->recv_trailing_metadata) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ gpr_strvec_add(&b, gpr_strdup("RECV_TRAILING_METADATA"));
+ }
+
+ if (op->cancel_stream) {
+ gpr_strvec_add(&b, gpr_strdup(" "));
+ const char* msg =
+ grpc_error_string(op->payload->cancel_stream.cancel_error);
+ gpr_asprintf(&tmp, "CANCEL:%s", msg);
+
+ gpr_strvec_add(&b, tmp);
+ }
+
+ out = gpr_strvec_flatten(&b, nullptr);
+ gpr_strvec_destroy(&b);
+
+ return out;
+}
+
+char* grpc_transport_op_string(grpc_transport_op* op) {
+ char* tmp;
+ char* out;
+ bool first = true;
+
+ gpr_strvec b;
+ gpr_strvec_init(&b);
+
+ if (op->on_connectivity_state_change != nullptr) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ if (op->connectivity_state != nullptr) {
+ gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:from=%s",
+ op->on_connectivity_state_change,
+ grpc_connectivity_state_name(*op->connectivity_state));
+ gpr_strvec_add(&b, tmp);
+ } else {
+ gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:unsubscribe",
+ op->on_connectivity_state_change);
+ gpr_strvec_add(&b, tmp);
+ }
+ }
+
+ if (op->disconnect_with_error != GRPC_ERROR_NONE) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ const char* err = grpc_error_string(op->disconnect_with_error);
+ gpr_asprintf(&tmp, "DISCONNECT:%s", err);
+ gpr_strvec_add(&b, tmp);
+ }
+
+ if (op->goaway_error) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ const char* msg = grpc_error_string(op->goaway_error);
+ gpr_asprintf(&tmp, "SEND_GOAWAY:%s", msg);
+
+ gpr_strvec_add(&b, tmp);
+ }
+
+ if (op->set_accept_stream) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ gpr_asprintf(&tmp, "SET_ACCEPT_STREAM:%p(%p,...)", op->set_accept_stream_fn,
+ op->set_accept_stream_user_data);
+ gpr_strvec_add(&b, tmp);
+ }
+
+ if (op->bind_pollset != nullptr) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET"));
+ }
+
+ if (op->bind_pollset_set != nullptr) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ first = false;
+ gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET_SET"));
+ }
+
+ if (op->send_ping.on_initiate != nullptr || op->send_ping.on_ack != nullptr) {
+ if (!first) gpr_strvec_add(&b, gpr_strdup(" "));
+ // first = false;
+ gpr_strvec_add(&b, gpr_strdup("SEND_PING"));
+ }
+
+ out = gpr_strvec_flatten(&b, nullptr);
+ gpr_strvec_destroy(&b);
+
+ return out;
+}
+
+void grpc_call_log_op(const char* file, int line, gpr_log_severity severity,
+ grpc_call_element* elem,
+ grpc_transport_stream_op_batch* op) {
+ char* str = grpc_transport_stream_op_batch_string(op);
+ gpr_log(file, line, severity, "OP[%s:%p]: %s", elem->filter->name, elem, str);
+ gpr_free(str);
+}