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-rw-r--r--test/core/util/port_server_client.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/test/core/util/port_server_client.c b/test/core/util/port_server_client.c
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+++ b/test/core/util/port_server_client.c
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+/*
+ *
+ * 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/support/port_platform.h>
+#include "test/core/util/test_config.h"
+
+#ifdef GRPC_TEST_PICK_PORT
+#include "test/core/util/port_server_client.h"
+
+#include <math.h>
+#include <string.h>
+
+#include <grpc/grpc.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/time.h>
+
+#include "src/core/httpcli/httpcli.h"
+
+typedef struct freereq {
+ gpr_mu *mu;
+ grpc_pollset *pollset;
+ int done;
+} freereq;
+
+static void destroy_pollset_and_shutdown(grpc_exec_ctx *exec_ctx, void *p,
+ bool success) {
+ grpc_pollset_destroy(p);
+ gpr_free(p);
+ grpc_shutdown();
+}
+
+static void freed_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
+ const grpc_httpcli_response *response) {
+ freereq *pr = arg;
+ gpr_mu_lock(pr->mu);
+ pr->done = 1;
+ grpc_pollset_kick(pr->pollset, NULL);
+ gpr_mu_unlock(pr->mu);
+}
+
+void grpc_free_port_using_server(char *server, int port) {
+ grpc_httpcli_context context;
+ grpc_httpcli_request req;
+ freereq pr;
+ char *path;
+ grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+ grpc_closure *shutdown_closure;
+
+ grpc_init();
+
+ memset(&pr, 0, sizeof(pr));
+ memset(&req, 0, sizeof(req));
+
+ pr.pollset = gpr_malloc(grpc_pollset_size());
+ grpc_pollset_init(pr.pollset, &pr.mu);
+ shutdown_closure =
+ grpc_closure_create(destroy_pollset_and_shutdown, pr.pollset);
+
+ req.host = server;
+ gpr_asprintf(&path, "/drop/%d", port);
+ req.path = path;
+
+ grpc_httpcli_context_init(&context);
+ grpc_httpcli_get(&exec_ctx, &context, pr.pollset, &req,
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10), freed_port_from_server,
+ &pr);
+ gpr_mu_lock(pr.mu);
+ while (!pr.done) {
+ grpc_pollset_worker *worker = NULL;
+ grpc_pollset_work(&exec_ctx, pr.pollset, &worker,
+ gpr_now(GPR_CLOCK_MONOTONIC),
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));
+ }
+ gpr_mu_unlock(pr.mu);
+
+ grpc_httpcli_context_destroy(&context);
+ grpc_exec_ctx_finish(&exec_ctx);
+ grpc_pollset_shutdown(&exec_ctx, pr.pollset, shutdown_closure);
+ grpc_exec_ctx_finish(&exec_ctx);
+ gpr_free(path);
+}
+
+typedef struct portreq {
+ gpr_mu *mu;
+ grpc_pollset *pollset;
+ int port;
+ int retries;
+ char *server;
+ grpc_httpcli_context *ctx;
+} portreq;
+
+static void got_port_from_server(grpc_exec_ctx *exec_ctx, void *arg,
+ const grpc_httpcli_response *response) {
+ size_t i;
+ int port = 0;
+ portreq *pr = arg;
+ int failed = 0;
+
+ if (!response) {
+ failed = 1;
+ gpr_log(GPR_DEBUG,
+ "failed port pick from server: retrying [response=NULL]");
+ } else if (response->status != 200) {
+ failed = 1;
+ gpr_log(GPR_DEBUG, "failed port pick from server: status=%d",
+ response->status);
+ }
+
+ if (failed) {
+ grpc_httpcli_request req;
+ memset(&req, 0, sizeof(req));
+ GPR_ASSERT(pr->retries < 10);
+ gpr_sleep_until(gpr_time_add(
+ gpr_now(GPR_CLOCK_REALTIME),
+ gpr_time_from_millis(
+ (int64_t)(1000.0 * (1 + pow(1.3, pr->retries) * rand() / RAND_MAX)),
+ GPR_TIMESPAN)));
+ pr->retries++;
+ req.host = pr->server;
+ req.path = "/get";
+ grpc_httpcli_get(exec_ctx, pr->ctx, pr->pollset, &req,
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10), got_port_from_server,
+ pr);
+ return;
+ }
+ GPR_ASSERT(response);
+ GPR_ASSERT(response->status == 200);
+ for (i = 0; i < response->body_length; i++) {
+ GPR_ASSERT(response->body[i] >= '0' && response->body[i] <= '9');
+ port = port * 10 + response->body[i] - '0';
+ }
+ GPR_ASSERT(port > 1024);
+ gpr_mu_lock(pr->mu);
+ pr->port = port;
+ grpc_pollset_kick(pr->pollset, NULL);
+ gpr_mu_unlock(pr->mu);
+}
+
+int grpc_pick_port_using_server(char *server) {
+ grpc_httpcli_context context;
+ grpc_httpcli_request req;
+ portreq pr;
+ grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+ grpc_closure *shutdown_closure;
+
+ grpc_init();
+
+ memset(&pr, 0, sizeof(pr));
+ memset(&req, 0, sizeof(req));
+ pr.pollset = gpr_malloc(grpc_pollset_size());
+ grpc_pollset_init(pr.pollset, &pr.mu);
+ shutdown_closure =
+ grpc_closure_create(destroy_pollset_and_shutdown, pr.pollset);
+ pr.port = -1;
+ pr.server = server;
+ pr.ctx = &context;
+
+ req.host = server;
+ req.path = "/get";
+
+ grpc_httpcli_context_init(&context);
+ grpc_httpcli_get(&exec_ctx, &context, pr.pollset, &req,
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(10), got_port_from_server,
+ &pr);
+ grpc_exec_ctx_finish(&exec_ctx);
+ gpr_mu_lock(pr.mu);
+ while (pr.port == -1) {
+ grpc_pollset_worker *worker = NULL;
+ grpc_pollset_work(&exec_ctx, pr.pollset, &worker,
+ gpr_now(GPR_CLOCK_MONOTONIC),
+ GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1));
+ }
+ gpr_mu_unlock(pr.mu);
+
+ grpc_httpcli_context_destroy(&context);
+ grpc_pollset_shutdown(&exec_ctx, pr.pollset, shutdown_closure);
+ grpc_exec_ctx_finish(&exec_ctx);
+
+ return pr.port;
+}
+
+#endif // GRPC_TEST_PICK_PORT
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