aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/core
diff options
context:
space:
mode:
Diffstat (limited to 'src/core')
-rw-r--r--src/core/ext/client_config/method_config.c214
-rw-r--r--src/core/ext/client_config/method_config.h85
2 files changed, 299 insertions, 0 deletions
diff --git a/src/core/ext/client_config/method_config.c b/src/core/ext/client_config/method_config.c
new file mode 100644
index 0000000000..e3589153fb
--- /dev/null
+++ b/src/core/ext/client_config/method_config.c
@@ -0,0 +1,214 @@
+//
+// Copyright 2015, 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 "src/core/ext/client_config/method_config.h"
+
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+
+#include "src/core/lib/transport/metadata.h"
+
+//
+// grpc_method_config
+//
+
+struct grpc_method_config {
+ gpr_refcount refs;
+ bool* wait_for_ready;
+ gpr_timespec* timeout;
+ int32_t* max_request_message_bytes;
+ int32_t* max_response_message_bytes;
+};
+
+grpc_method_config* grpc_method_config_create(
+ bool* wait_for_ready, gpr_timespec* timeout,
+ int32_t* max_request_message_bytes, int32_t* max_response_message_bytes) {
+ grpc_method_config* config = gpr_malloc(sizeof(*config));
+ memset(config, 0, sizeof(*config));
+ gpr_ref_init(&config->refs, 1);
+ if (wait_for_ready != NULL) {
+ config->wait_for_ready = gpr_malloc(sizeof(*wait_for_ready));
+ *config->wait_for_ready = *wait_for_ready;
+ }
+ if (timeout != NULL) {
+ config->timeout = gpr_malloc(sizeof(*timeout));
+ *config->timeout = *timeout;
+ }
+ if (max_request_message_bytes != NULL) {
+ config->max_request_message_bytes =
+ gpr_malloc(sizeof(*max_request_message_bytes));
+ *config->max_request_message_bytes = *max_request_message_bytes;
+ }
+ if (max_response_message_bytes != NULL) {
+ config->max_response_message_bytes =
+ gpr_malloc(sizeof(*max_response_message_bytes));
+ *config->max_response_message_bytes = *max_response_message_bytes;
+ }
+ return config;
+}
+
+grpc_method_config* grpc_method_config_ref(grpc_method_config* method_config) {
+ gpr_ref(&method_config->refs);
+ return method_config;
+}
+
+void grpc_method_config_unref(grpc_method_config* method_config) {
+ if (gpr_unref(&method_config->refs)) {
+ gpr_free(method_config->wait_for_ready);
+ gpr_free(method_config->timeout);
+ gpr_free(method_config->max_request_message_bytes);
+ gpr_free(method_config->max_response_message_bytes);
+ gpr_free(method_config);
+ }
+}
+
+bool* grpc_method_config_get_wait_for_ready(grpc_method_config* method_config) {
+ return method_config->wait_for_ready;
+}
+
+gpr_timespec* grpc_method_config_get_timeout(
+ grpc_method_config* method_config) {
+ return method_config->timeout;
+}
+
+int32_t* grpc_method_config_get_max_request_message_bytes(
+ grpc_method_config* method_config) {
+ return method_config->max_request_message_bytes;
+}
+
+int32_t* grpc_method_config_get_max_response_message_bytes(
+ grpc_method_config* method_config) {
+ return method_config->max_response_message_bytes;
+}
+
+//
+// grpc_method_config_table
+//
+
+typedef struct grpc_method_config_table_entry {
+ grpc_mdstr* path;
+ grpc_method_config* method_config;
+} grpc_method_config_table_entry;
+
+#define METHOD_CONFIG_TABLE_SIZE 128
+struct grpc_method_config_table {
+ gpr_refcount refs;
+ grpc_method_config_table_entry entries[METHOD_CONFIG_TABLE_SIZE];
+};
+
+grpc_method_config_table* grpc_method_config_table_create() {
+ grpc_method_config_table* table = gpr_malloc(sizeof(*table));
+ memset(table, 0, sizeof(*table));
+ gpr_ref_init(&table->refs, 1);
+ return table;
+}
+
+grpc_method_config_table* grpc_method_config_table_ref(
+ grpc_method_config_table* table) {
+ if (table != NULL) gpr_ref(&table->refs);
+ return table;
+}
+
+void grpc_method_config_table_unref(grpc_method_config_table* table) {
+ if (table != NULL && gpr_unref(&table->refs)) {
+ for (size_t i = 0; i < GPR_ARRAY_SIZE(table->entries); ++i) {
+ grpc_method_config_table_entry* entry = &table->entries[i];
+ if (entry->path != NULL) {
+ GRPC_MDSTR_UNREF(entry->path);
+ grpc_method_config_unref(entry->method_config);
+ }
+ }
+ }
+}
+
+// Helper function for insert and get operations that performs quadratic
+// probing (https://en.wikipedia.org/wiki/Quadratic_probing).
+static size_t grpc_method_config_table_find_index(
+ grpc_method_config_table* table, grpc_mdstr* path, bool find_empty) {
+ for (size_t i = 0; i < GPR_ARRAY_SIZE(table->entries); ++i) {
+ const size_t idx = (path->hash + i * i) % GPR_ARRAY_SIZE(table->entries);
+ if (table->entries[idx].path == NULL)
+ return find_empty ? idx : GPR_ARRAY_SIZE(table->entries);
+ if (table->entries[idx].path == path) return idx;
+ }
+ return GPR_ARRAY_SIZE(table->entries) + 1; // Not found.
+}
+
+static void grpc_method_config_table_insert(grpc_method_config_table* table,
+ grpc_mdstr* path,
+ grpc_method_config* config) {
+ const size_t idx =
+ grpc_method_config_table_find_index(table, path, true /* find_empty */);
+ // This can happen if the table is full.
+ GPR_ASSERT(idx != GPR_ARRAY_SIZE(table->entries));
+ grpc_method_config_table_entry* entry = &table->entries[idx];
+ entry->path = GRPC_MDSTR_REF(path);
+ entry->method_config = grpc_method_config_ref(config);
+}
+
+static grpc_method_config* grpc_method_config_table_get(
+ grpc_method_config_table* table, grpc_mdstr* path) {
+ const size_t idx =
+ grpc_method_config_table_find_index(table, path, false /* find_empty */);
+ if (idx == GPR_ARRAY_SIZE(table->entries)) return NULL; // Not found.
+ return table->entries[idx].method_config;
+}
+
+void grpc_method_config_table_add_method_config(
+ grpc_method_config_table* table, grpc_mdstr** paths, size_t num_paths,
+ grpc_method_config* method_config) {
+ for (size_t i = 0; i < num_paths; ++i) {
+ grpc_method_config_table_insert(table, paths[i], method_config);
+ }
+}
+
+grpc_method_config* grpc_method_config_table_get_method_config(
+ grpc_method_config_table* table, grpc_mdstr* path) {
+ grpc_method_config* method_config = grpc_method_config_table_get(table, path);
+ // If we didn't find a match for the path, try looking for a wildcard
+ // entry (i.e., change "/service/method" to "/service/*").
+ if (method_config == NULL) {
+ const char* path_str = grpc_mdstr_as_c_string(path);
+ const char* sep = strrchr(path_str, '/') + 1;
+ const size_t len = (size_t)(sep - path_str);
+ char buf[len + 2]; // '*' and NUL
+ memcpy(buf, path_str, len);
+ buf[len] = '*';
+ buf[len + 1] = '\0';
+ grpc_mdstr* wildcard_path = grpc_mdstr_from_string(buf);
+ method_config = grpc_method_config_table_get(table, wildcard_path);
+ GRPC_MDSTR_UNREF(wildcard_path);
+ }
+ return grpc_method_config_ref(method_config);
+}
diff --git a/src/core/ext/client_config/method_config.h b/src/core/ext/client_config/method_config.h
new file mode 100644
index 0000000000..9490e296b2
--- /dev/null
+++ b/src/core/ext/client_config/method_config.h
@@ -0,0 +1,85 @@
+//
+// Copyright 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.
+//
+
+#ifndef GRPC_CORE_EXT_CLIENT_CONFIG_METHOD_CONFIG_H
+#define GRPC_CORE_EXT_CLIENT_CONFIG_METHOD_CONFIG_H
+
+#include <stdbool.h>
+
+#include <grpc/impl/codegen/gpr_types.h>
+
+#include "src/core/lib/transport/metadata.h"
+
+/// Per-method configuration.
+typedef struct grpc_method_config grpc_method_config;
+
+/// Any parameter may be NULL to indicate that the value is unset.
+grpc_method_config* grpc_method_config_create(
+ bool* wait_for_ready, gpr_timespec* timeout,
+ int32_t* max_request_message_bytes, int32_t* max_response_message_bytes);
+
+grpc_method_config* grpc_method_config_ref(grpc_method_config* method_config);
+void grpc_method_config_unref(grpc_method_config* method_config);
+
+/// These methods return NULL if the requested field is unset.
+/// The caller does NOT take ownership of the result.
+bool* grpc_method_config_get_wait_for_ready(grpc_method_config* method_config);
+gpr_timespec* grpc_method_config_get_timeout(grpc_method_config* method_config);
+int32_t* grpc_method_config_get_max_request_message_bytes(
+ grpc_method_config* method_config);
+int32_t* grpc_method_config_get_max_response_message_bytes(
+ grpc_method_config* method_config);
+
+/// A table of method configs.
+typedef struct grpc_method_config_table grpc_method_config_table;
+
+grpc_method_config_table* grpc_method_config_table_create();
+
+grpc_method_config_table* grpc_method_config_table_ref(
+ grpc_method_config_table* table);
+void grpc_method_config_table_unref(grpc_method_config_table* table);
+
+/// Adds \a method_config to \a table. \a paths indicates the set of path
+/// names for which this config applies. Each name is of one of the
+/// following forms:
+/// service/method -- specifies exact service and method name
+/// service/* -- matches all methods for the specified service
+/// Takes new references to all elements of \a paths and to \a method_config.
+void grpc_method_config_table_add_method_config(
+ grpc_method_config_table* table, grpc_mdstr** paths, size_t num_paths,
+ grpc_method_config* method_config);
+
+/// Returns NULL if the method has no config.
+/// Caller owns a reference to result.
+grpc_method_config* grpc_method_config_table_get_method_config(
+ grpc_method_config_table* table, grpc_mdstr* path);
+
+#endif /* GRPC_CORE_EXT_CLIENT_CONFIG_METHOD_CONFIG_H */
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-12 15:32:16 +0000