Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / ext / filters / client_channel / resolver / dns / c_ares / grpc_ares_wrapper.h

diff --git a/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h b/legacy-libs/grpc/deps/grpc/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h
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+/*
+ *
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/server_address.h"
+#include "src/core/lib/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/polling_entity.h"
+#include "src/core/lib/iomgr/resolve_address.h"
+
+#define GRPC_DNS_ARES_DEFAULT_QUERY_TIMEOUT_MS 120000
+
+extern grpc_core::TraceFlag grpc_trace_cares_address_sorting;
+
+extern grpc_core::TraceFlag grpc_trace_cares_resolver;
+
+#define GRPC_CARES_TRACE_LOG(format, ...)                           \
+  do {                                                              \
+    if (GRPC_TRACE_FLAG_ENABLED(grpc_trace_cares_resolver)) {       \
+      gpr_log(GPR_DEBUG, "(c-ares resolver) " format, __VA_ARGS__); \
+    }                                                               \
+  } while (0)
+
+typedef struct grpc_ares_request grpc_ares_request;
+
+/* Asynchronously resolve \a name. Use \a default_port if a port isn't
+   designated in \a name, otherwise use the port in \a name. grpc_ares_init()
+   must be called at least once before this function. \a on_done may be
+   called directly in this function without being scheduled with \a exec_ctx,
+   so it must not try to acquire locks that are being held by the caller. */
+extern void (*grpc_resolve_address_ares)(const char* name,
+                                         const char* default_port,
+                                         grpc_pollset_set* interested_parties,
+                                         grpc_closure* on_done,
+                                         grpc_resolved_addresses** addresses);
+
+/* Asynchronously resolve \a name. It will try to resolve grpclb SRV records in
+  addition to the normal address records. For normal address records, it uses
+  \a default_port if a port isn't designated in \a name, otherwise it uses the
+  port in \a name. grpc_ares_init() must be called at least once before this
+  function. \a on_done may be called directly in this function without being
+  scheduled with \a exec_ctx, so it must not try to acquire locks that are
+  being held by the caller. The returned grpc_ares_request object is owned
+  by the caller and it is safe to free after on_done is called back. */
+extern grpc_ares_request* (*grpc_dns_lookup_ares_locked)(
+    const char* dns_server, const char* name, const char* default_port,
+    grpc_pollset_set* interested_parties, grpc_closure* on_done,
+    grpc_core::UniquePtr<grpc_core::ServerAddressList>* addresses,
+    bool check_grpclb, char** service_config_json, int query_timeout_ms,
+    grpc_combiner* combiner);
+
+/* Cancel the pending grpc_ares_request \a request */
+extern void (*grpc_cancel_ares_request_locked)(grpc_ares_request* request);
+
+/* Initialize gRPC ares wrapper. Must be called at least once before
+   grpc_resolve_address_ares(). */
+grpc_error* grpc_ares_init(void);
+
+/* Uninitialized gRPC ares wrapper. If there was more than one previous call to
+   grpc_ares_init(), this function uninitializes the gRPC ares wrapper only if
+   it has been called the same number of times as grpc_ares_init(). */
+void grpc_ares_cleanup(void);
+
+/** Schedules the desired callback for request completion
+ * and destroys the grpc_ares_request */
+void grpc_ares_complete_request_locked(grpc_ares_request* request);
+
+/* Indicates whether or not AAAA queries should be attempted. */
+/* E.g., return false if ipv6 is known to not be available. */
+bool grpc_ares_query_ipv6();
+
+/* Sorts destinations in lb_addrs according to RFC 6724. */
+void grpc_cares_wrapper_address_sorting_sort(
+    grpc_core::ServerAddressList* addresses);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_DNS_C_ARES_GRPC_ARES_WRAPPER_H \
+        */