Initial checkin of gRPC to third_party/

third_party/grpc/test/core/fling/client.c

Index: third_party/grpc/test/core/fling/client.c
diff --git a/third_party/grpc/test/core/fling/client.c b/third_party/grpc/test/core/fling/client.c
new file mode 100644
index 0000000000000000000000000000000000000000..b36aef30935998b52a93f5dbbda0bffcc08314ef
--- /dev/null
+++ b/third_party/grpc/test/core/fling/client.c
@@ -0,0 +1,249 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <grpc/grpc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/cmdline.h>
+#include <grpc/support/histogram.h>
+#include <grpc/support/log.h>
+#include <grpc/support/time.h>
+#include <grpc/support/useful.h>
+#include "src/core/profiling/timers.h"
+#include "test/core/util/grpc_profiler.h"
+#include "test/core/util/test_config.h"
+
+static gpr_histogram *histogram;
+static grpc_byte_buffer *the_buffer;
+static grpc_channel *channel;
+static grpc_completion_queue *cq;
+static grpc_call *call;
+static grpc_op ops[6];
+static grpc_op stream_init_ops[2];
+static grpc_op stream_step_ops[2];
+static grpc_metadata_array initial_metadata_recv;
+static grpc_metadata_array trailing_metadata_recv;
+static grpc_byte_buffer *response_payload_recv = NULL;
+static grpc_status_code status;
+static char *details = NULL;
+static size_t details_capacity = 0;
+static grpc_op *op;
+
+static void init_ping_pong_request(void) {
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+
+  op = ops;
+
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 0;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = the_buffer;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &response_payload_recv;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op++;
+}
+
+static void step_ping_pong_request(void) {
+  GPR_TIMER_BEGIN("ping_pong", 1);
+  call = grpc_channel_create_call(channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
+                                  "/Reflector/reflectUnary", "localhost",
+                                  gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, ops,
+                                                   (size_t)(op - ops),
+                                                   (void *)1, NULL));
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  grpc_call_destroy(call);
+  grpc_byte_buffer_destroy(response_payload_recv);
+  call = NULL;
+  GPR_TIMER_END("ping_pong", 1);
+}
+
+static void init_ping_pong_stream(void) {
+  grpc_metadata_array_init(&initial_metadata_recv);
+
+  grpc_call_error error;
+  call = grpc_channel_create_call(channel, NULL, GRPC_PROPAGATE_DEFAULTS, cq,
+                                  "/Reflector/reflectStream", "localhost",
+                                  gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  stream_init_ops[0].op = GRPC_OP_SEND_INITIAL_METADATA;
+  stream_init_ops[0].data.send_initial_metadata.count = 0;
+  stream_init_ops[1].op = GRPC_OP_RECV_INITIAL_METADATA;
+  stream_init_ops[1].data.recv_initial_metadata = &initial_metadata_recv;
+  error = grpc_call_start_batch(call, stream_init_ops, 2, (void *)1, NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+
+  stream_step_ops[0].op = GRPC_OP_SEND_MESSAGE;
+  stream_step_ops[0].data.send_message = the_buffer;
+  stream_step_ops[1].op = GRPC_OP_RECV_MESSAGE;
+  stream_step_ops[1].data.recv_message = &response_payload_recv;
+}
+
+static void step_ping_pong_stream(void) {
+  grpc_call_error error;
+  GPR_TIMER_BEGIN("ping_pong", 1);
+  error = grpc_call_start_batch(call, stream_step_ops, 2, (void *)1, NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+  grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
+  grpc_byte_buffer_destroy(response_payload_recv);
+  GPR_TIMER_END("ping_pong", 1);
+}
+
+static double now(void) {
+  gpr_timespec tv = gpr_now(GPR_CLOCK_REALTIME);
+  return 1e9 * (double)tv.tv_sec + tv.tv_nsec;
+}
+
+typedef struct {
+  const char *name;
+  void (*init)();
+  void (*do_one_step)();
+} scenario;
+
+static const scenario scenarios[] = {
+    {"ping-pong-request", init_ping_pong_request, step_ping_pong_request},
+    {"ping-pong-stream", init_ping_pong_stream, step_ping_pong_stream},
+};
+
+int main(int argc, char **argv) {
+  gpr_slice slice = gpr_slice_from_copied_string("x");
+  double start, stop;
+  unsigned i;
+
+  char *fake_argv[1];
+
+  int payload_size = 1;
+  int secure = 0;
+  char *target = "localhost:443";
+  gpr_cmdline *cl;
+  grpc_event event;
+  char *scenario_name = "ping-pong-request";
+  scenario sc = {NULL, NULL, NULL};
+
+  gpr_timers_set_log_filename("latency_trace.fling_client.txt");
+
+  grpc_init();
+
+  GPR_ASSERT(argc >= 1);
+  fake_argv[0] = argv[0];
+  grpc_test_init(1, fake_argv);
+
+  cl = gpr_cmdline_create("fling client");
+  gpr_cmdline_add_int(cl, "payload_size", "Size of the payload to send",
+                      &payload_size);
+  gpr_cmdline_add_string(cl, "target", "Target host:port", &target);
+  gpr_cmdline_add_flag(cl, "secure", "Run with security?", &secure);
+  gpr_cmdline_add_string(cl, "scenario", "Scenario", &scenario_name);
+  gpr_cmdline_parse(cl, argc, argv);
+  gpr_cmdline_destroy(cl);
+
+  for (i = 0; i < GPR_ARRAY_SIZE(scenarios); i++) {
+    if (0 == strcmp(scenarios[i].name, scenario_name)) {
+      sc = scenarios[i];
+    }
+  }
+  if (!sc.name) {
+    fprintf(stderr, "unsupported scenario '%s'. Valid are:", scenario_name);
+    for (i = 0; i < GPR_ARRAY_SIZE(scenarios); i++) {
+      fprintf(stderr, " %s", scenarios[i].name);
+    }
+    return 1;
+  }
+
+  channel = grpc_insecure_channel_create(target, NULL, NULL);
+  cq = grpc_completion_queue_create(NULL);
+  the_buffer = grpc_raw_byte_buffer_create(&slice, (size_t)payload_size);
+  histogram = gpr_histogram_create(0.01, 60e9);
+
+  sc.init();
+
+  gpr_timespec end_warmup = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(3);
+  gpr_timespec end_profiling = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(30);
+
+  while (gpr_time_cmp(gpr_now(end_warmup.clock_type), end_warmup) < 0) {
+    sc.do_one_step();
+  }
+
+  gpr_log(GPR_INFO, "start profiling");
+  grpc_profiler_start("client.prof");
+  while (gpr_time_cmp(gpr_now(end_profiling.clock_type), end_profiling) < 0) {
+    start = now();
+    sc.do_one_step();
+    stop = now();
+    gpr_histogram_add(histogram, stop - start);
+  }
+  grpc_profiler_stop();
+
+  if (call) {
+    grpc_call_destroy(call);
+  }
+
+  grpc_channel_destroy(channel);
+  grpc_completion_queue_shutdown(cq);
+  do {
+    event = grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME),
+                                       NULL);
+  } while (event.type != GRPC_QUEUE_SHUTDOWN);
+  grpc_completion_queue_destroy(cq);
+  grpc_byte_buffer_destroy(the_buffer);
+  gpr_slice_unref(slice);
+
+  gpr_log(GPR_INFO, "latency (50/95/99/99.9): %f/%f/%f/%f",
+          gpr_histogram_percentile(histogram, 50),
+          gpr_histogram_percentile(histogram, 95),
+          gpr_histogram_percentile(histogram, 99),
+          gpr_histogram_percentile(histogram, 99.9));
+  gpr_histogram_destroy(histogram);
+
+  grpc_shutdown();
+
+  return 0;
+}