Abhishek Kumar
10 years ago
commit
186e7b4d54
365 changed files with 11519 additions and 3898 deletions
@ -0,0 +1,82 @@ |
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/*
|
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
||||
* distribution. |
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* * 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. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#ifndef GRPCXX_DYNAMIC_THREAD_POOL_H |
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#define GRPCXX_DYNAMIC_THREAD_POOL_H |
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#include <grpc++/config.h> |
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#include <grpc++/impl/sync.h> |
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#include <grpc++/impl/thd.h> |
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#include <grpc++/thread_pool_interface.h> |
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|
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#include <list> |
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#include <memory> |
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#include <queue> |
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|
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namespace grpc { |
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class DynamicThreadPool GRPC_FINAL : public ThreadPoolInterface { |
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public: |
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explicit DynamicThreadPool(int reserve_threads); |
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~DynamicThreadPool(); |
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void Add(const std::function<void()>& callback) GRPC_OVERRIDE; |
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private: |
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class DynamicThread { |
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public: |
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DynamicThread(DynamicThreadPool *pool); |
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~DynamicThread(); |
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private: |
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DynamicThreadPool *pool_; |
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std::unique_ptr<grpc::thread> thd_; |
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void ThreadFunc(); |
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}; |
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grpc::mutex mu_; |
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grpc::condition_variable cv_; |
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grpc::condition_variable shutdown_cv_; |
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bool shutdown_; |
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std::queue<std::function<void()>> callbacks_; |
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int reserve_threads_; |
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int nthreads_; |
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int threads_waiting_; |
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std::list<DynamicThread*> dead_threads_; |
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|
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void ThreadFunc(); |
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static void ReapThreads(std::list<DynamicThread*>* tlist); |
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}; |
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} // namespace grpc
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#endif // GRPCXX_DYNAMIC_THREAD_POOL_H
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@ -0,0 +1,299 @@ |
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/*
|
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
||||
* modification, are permitted provided that the following conditions are |
||||
* met: |
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* |
||||
* * 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. |
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* * 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. |
||||
* |
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* 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 |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#include <grpc/support/port_platform.h> |
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#include "src/core/client_config/resolvers/sockaddr_resolver.h" |
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|
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#include <stdio.h> |
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#include <string.h> |
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#ifdef GPR_POSIX_SOCKET |
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#include <sys/un.h> |
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#endif |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/host_port.h> |
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#include <grpc/support/string_util.h> |
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#include "src/core/client_config/lb_policies/pick_first.h" |
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#include "src/core/iomgr/resolve_address.h" |
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#include "src/core/support/string.h" |
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|
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typedef struct { |
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/** base class: must be first */ |
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grpc_resolver base; |
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/** refcount */ |
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gpr_refcount refs; |
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/** subchannel factory */ |
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grpc_subchannel_factory *subchannel_factory; |
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/** load balancing policy factory */ |
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grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels, |
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size_t num_subchannels); |
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|
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/** the address that we've 'resolved' */ |
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struct sockaddr_storage addr; |
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int addr_len; |
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|
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/** mutex guarding the rest of the state */ |
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gpr_mu mu; |
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/** have we published? */ |
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int published; |
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/** pending next completion, or NULL */ |
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grpc_iomgr_closure *next_completion; |
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/** target config address for next completion */ |
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grpc_client_config **target_config; |
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} sockaddr_resolver; |
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static void sockaddr_destroy(grpc_resolver *r); |
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static void sockaddr_maybe_finish_next_locked(sockaddr_resolver *r); |
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static void sockaddr_shutdown(grpc_resolver *r); |
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static void sockaddr_channel_saw_error(grpc_resolver *r, |
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struct sockaddr *failing_address, |
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int failing_address_len); |
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static void sockaddr_next(grpc_resolver *r, grpc_client_config **target_config, |
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grpc_iomgr_closure *on_complete); |
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static const grpc_resolver_vtable sockaddr_resolver_vtable = { |
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sockaddr_destroy, sockaddr_shutdown, sockaddr_channel_saw_error, |
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sockaddr_next}; |
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static void sockaddr_shutdown(grpc_resolver *resolver) { |
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sockaddr_resolver *r = (sockaddr_resolver *)resolver; |
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gpr_mu_lock(&r->mu); |
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if (r->next_completion != NULL) { |
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*r->target_config = NULL; |
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/* TODO(ctiller): add delayed callback */ |
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grpc_iomgr_add_callback(r->next_completion); |
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r->next_completion = NULL; |
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} |
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gpr_mu_unlock(&r->mu); |
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} |
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|
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static void sockaddr_channel_saw_error(grpc_resolver *resolver, |
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struct sockaddr *sa, int len) {} |
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static void sockaddr_next(grpc_resolver *resolver, |
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grpc_client_config **target_config, |
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grpc_iomgr_closure *on_complete) { |
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sockaddr_resolver *r = (sockaddr_resolver *)resolver; |
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gpr_mu_lock(&r->mu); |
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GPR_ASSERT(!r->next_completion); |
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r->next_completion = on_complete; |
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r->target_config = target_config; |
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sockaddr_maybe_finish_next_locked(r); |
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gpr_mu_unlock(&r->mu); |
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} |
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static void sockaddr_maybe_finish_next_locked(sockaddr_resolver *r) { |
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grpc_client_config *cfg; |
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grpc_lb_policy *lb_policy; |
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grpc_subchannel *subchannel; |
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grpc_subchannel_args args; |
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if (r->next_completion != NULL && !r->published) { |
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cfg = grpc_client_config_create(); |
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memset(&args, 0, sizeof(args)); |
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args.addr = (struct sockaddr *)&r->addr; |
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args.addr_len = r->addr_len; |
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subchannel = |
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grpc_subchannel_factory_create_subchannel(r->subchannel_factory, &args); |
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lb_policy = r->lb_policy_factory(&subchannel, 1); |
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grpc_client_config_set_lb_policy(cfg, lb_policy); |
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GRPC_LB_POLICY_UNREF(lb_policy, "unix"); |
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r->published = 1; |
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*r->target_config = cfg; |
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grpc_iomgr_add_callback(r->next_completion); |
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r->next_completion = NULL; |
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} |
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} |
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static void sockaddr_destroy(grpc_resolver *gr) { |
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sockaddr_resolver *r = (sockaddr_resolver *)gr; |
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gpr_mu_destroy(&r->mu); |
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grpc_subchannel_factory_unref(r->subchannel_factory); |
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gpr_free(r); |
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} |
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#ifdef GPR_POSIX_SOCKET |
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static int parse_unix(grpc_uri *uri, struct sockaddr_storage *addr, int *len) { |
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struct sockaddr_un *un = (struct sockaddr_un *)addr; |
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un->sun_family = AF_UNIX; |
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strcpy(un->sun_path, uri->path); |
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*len = strlen(un->sun_path) + sizeof(un->sun_family) + 1; |
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return 1; |
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} |
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#endif |
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static int parse_ipv4(grpc_uri *uri, struct sockaddr_storage *addr, int *len) { |
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const char *host_port = uri->path; |
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char *host; |
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char *port; |
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int port_num; |
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int result = 0; |
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struct sockaddr_in *in = (struct sockaddr_in *)addr; |
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if (*host_port == '/') ++host_port; |
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if (!gpr_split_host_port(host_port, &host, &port)) { |
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return 0; |
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} |
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memset(in, 0, sizeof(*in)); |
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*len = sizeof(*in); |
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in->sin_family = AF_INET; |
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if (inet_pton(AF_INET, host, &in->sin_addr) == 0) { |
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gpr_log(GPR_ERROR, "invalid ipv4 address: '%s'", host); |
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goto done; |
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} |
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if (port != NULL) { |
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if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 || |
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port_num > 65535) { |
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gpr_log(GPR_ERROR, "invalid ipv4 port: '%s'", port); |
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goto done; |
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} |
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in->sin_port = htons(port_num); |
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} else { |
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gpr_log(GPR_ERROR, "no port given for ipv4 scheme"); |
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goto done; |
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} |
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result = 1; |
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done: |
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gpr_free(host); |
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gpr_free(port); |
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return result; |
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} |
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static int parse_ipv6(grpc_uri *uri, struct sockaddr_storage *addr, int *len) { |
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const char *host_port = uri->path; |
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char *host; |
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char *port; |
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int port_num; |
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int result = 0; |
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struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; |
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if (*host_port == '/') ++host_port; |
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if (!gpr_split_host_port(host_port, &host, &port)) { |
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return 0; |
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} |
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memset(in6, 0, sizeof(*in6)); |
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*len = sizeof(*in6); |
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in6->sin6_family = AF_INET6; |
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if (inet_pton(AF_INET6, host, &in6->sin6_addr) == 0) { |
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gpr_log(GPR_ERROR, "invalid ipv6 address: '%s'", host); |
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goto done; |
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} |
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|
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if (port != NULL) { |
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if (sscanf(port, "%d", &port_num) != 1 || port_num < 0 || |
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port_num > 65535) { |
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gpr_log(GPR_ERROR, "invalid ipv6 port: '%s'", port); |
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goto done; |
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} |
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in6->sin6_port = htons(port_num); |
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} else { |
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gpr_log(GPR_ERROR, "no port given for ipv6 scheme"); |
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goto done; |
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} |
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result = 1; |
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done: |
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gpr_free(host); |
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gpr_free(port); |
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return result; |
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} |
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|
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static grpc_resolver *sockaddr_create( |
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grpc_uri *uri, |
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grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels, |
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size_t num_subchannels), |
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grpc_subchannel_factory *subchannel_factory, |
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int parse(grpc_uri *uri, struct sockaddr_storage *dst, int *len)) { |
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sockaddr_resolver *r; |
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|
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if (0 != strcmp(uri->authority, "")) { |
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gpr_log(GPR_ERROR, "authority based uri's not supported"); |
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return NULL; |
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} |
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|
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r = gpr_malloc(sizeof(sockaddr_resolver)); |
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memset(r, 0, sizeof(*r)); |
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if (!parse(uri, &r->addr, &r->addr_len)) { |
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gpr_free(r); |
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return NULL; |
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} |
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|
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gpr_ref_init(&r->refs, 1); |
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gpr_mu_init(&r->mu); |
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grpc_resolver_init(&r->base, &sockaddr_resolver_vtable); |
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r->subchannel_factory = subchannel_factory; |
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r->lb_policy_factory = lb_policy_factory; |
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|
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grpc_subchannel_factory_ref(subchannel_factory); |
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return &r->base; |
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} |
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|
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/*
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* FACTORY |
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*/ |
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|
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static void sockaddr_factory_ref(grpc_resolver_factory *factory) {} |
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|
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static void sockaddr_factory_unref(grpc_resolver_factory *factory) {} |
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|
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#define DECL_FACTORY(name) \ |
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static grpc_resolver *name##_factory_create_resolver( \
|
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grpc_resolver_factory *factory, grpc_uri *uri, \
|
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grpc_subchannel_factory *subchannel_factory) { \
|
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return sockaddr_create(uri, grpc_create_pick_first_lb_policy, \
|
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subchannel_factory, parse_##name); \
|
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} \
|
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static const grpc_resolver_factory_vtable name##_factory_vtable = { \
|
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sockaddr_factory_ref, sockaddr_factory_unref, \
|
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name##_factory_create_resolver}; \
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static grpc_resolver_factory name##_resolver_factory = { \
|
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&name##_factory_vtable}; \
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grpc_resolver_factory *grpc_##name##_resolver_factory_create() { \
|
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return &name##_resolver_factory; \
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} |
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#ifdef GPR_POSIX_SOCKET |
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DECL_FACTORY(unix) |
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#endif |
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DECL_FACTORY(ipv4) |
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DECL_FACTORY(ipv6) |
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@ -1,195 +0,0 @@ |
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/*
|
||||
* |
||||
* 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 <grpc/support/port_platform.h> |
||||
#ifdef GPR_POSIX_SOCKET |
||||
|
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#include "src/core/client_config/resolvers/unix_resolver_posix.h" |
||||
|
||||
#include <string.h> |
||||
#include <sys/un.h> |
||||
|
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#include <grpc/support/alloc.h> |
||||
#include <grpc/support/string_util.h> |
||||
|
||||
#include "src/core/client_config/lb_policies/pick_first.h" |
||||
#include "src/core/iomgr/resolve_address.h" |
||||
#include "src/core/support/string.h" |
||||
|
||||
typedef struct { |
||||
/** base class: must be first */ |
||||
grpc_resolver base; |
||||
/** refcount */ |
||||
gpr_refcount refs; |
||||
/** subchannel factory */ |
||||
grpc_subchannel_factory *subchannel_factory; |
||||
/** load balancing policy factory */ |
||||
grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels, |
||||
size_t num_subchannels); |
||||
|
||||
/** the address that we've 'resolved' */ |
||||
struct sockaddr_un addr; |
||||
int addr_len; |
||||
|
||||
/** mutex guarding the rest of the state */ |
||||
gpr_mu mu; |
||||
/** have we published? */ |
||||
int published; |
||||
/** pending next completion, or NULL */ |
||||
grpc_iomgr_closure *next_completion; |
||||
/** target config address for next completion */ |
||||
grpc_client_config **target_config; |
||||
} unix_resolver; |
||||
|
||||
static void unix_destroy(grpc_resolver *r); |
||||
|
||||
static void unix_maybe_finish_next_locked(unix_resolver *r); |
||||
|
||||
static void unix_shutdown(grpc_resolver *r); |
||||
static void unix_channel_saw_error(grpc_resolver *r, |
||||
struct sockaddr *failing_address, |
||||
int failing_address_len); |
||||
static void unix_next(grpc_resolver *r, grpc_client_config **target_config, |
||||
grpc_iomgr_closure *on_complete); |
||||
|
||||
static const grpc_resolver_vtable unix_resolver_vtable = { |
||||
unix_destroy, unix_shutdown, unix_channel_saw_error, unix_next}; |
||||
|
||||
static void unix_shutdown(grpc_resolver *resolver) { |
||||
unix_resolver *r = (unix_resolver *)resolver; |
||||
gpr_mu_lock(&r->mu); |
||||
if (r->next_completion != NULL) { |
||||
*r->target_config = NULL; |
||||
/* TODO(ctiller): add delayed callback */ |
||||
grpc_iomgr_add_callback(r->next_completion); |
||||
r->next_completion = NULL; |
||||
} |
||||
gpr_mu_unlock(&r->mu); |
||||
} |
||||
|
||||
static void unix_channel_saw_error(grpc_resolver *resolver, struct sockaddr *sa, |
||||
int len) {} |
||||
|
||||
static void unix_next(grpc_resolver *resolver, |
||||
grpc_client_config **target_config, |
||||
grpc_iomgr_closure *on_complete) { |
||||
unix_resolver *r = (unix_resolver *)resolver; |
||||
gpr_mu_lock(&r->mu); |
||||
GPR_ASSERT(!r->next_completion); |
||||
r->next_completion = on_complete; |
||||
r->target_config = target_config; |
||||
unix_maybe_finish_next_locked(r); |
||||
gpr_mu_unlock(&r->mu); |
||||
} |
||||
|
||||
static void unix_maybe_finish_next_locked(unix_resolver *r) { |
||||
grpc_client_config *cfg; |
||||
grpc_lb_policy *lb_policy; |
||||
grpc_subchannel *subchannel; |
||||
grpc_subchannel_args args; |
||||
|
||||
if (r->next_completion != NULL && !r->published) { |
||||
cfg = grpc_client_config_create(); |
||||
memset(&args, 0, sizeof(args)); |
||||
args.addr = (struct sockaddr *)&r->addr; |
||||
args.addr_len = r->addr_len; |
||||
subchannel = |
||||
grpc_subchannel_factory_create_subchannel(r->subchannel_factory, &args); |
||||
lb_policy = r->lb_policy_factory(&subchannel, 1); |
||||
grpc_client_config_set_lb_policy(cfg, lb_policy); |
||||
GRPC_LB_POLICY_UNREF(lb_policy, "unix"); |
||||
r->published = 1; |
||||
*r->target_config = cfg; |
||||
grpc_iomgr_add_callback(r->next_completion); |
||||
r->next_completion = NULL; |
||||
} |
||||
} |
||||
|
||||
static void unix_destroy(grpc_resolver *gr) { |
||||
unix_resolver *r = (unix_resolver *)gr; |
||||
gpr_mu_destroy(&r->mu); |
||||
grpc_subchannel_factory_unref(r->subchannel_factory); |
||||
gpr_free(r); |
||||
} |
||||
|
||||
static grpc_resolver *unix_create( |
||||
grpc_uri *uri, |
||||
grpc_lb_policy *(*lb_policy_factory)(grpc_subchannel **subchannels, |
||||
size_t num_subchannels), |
||||
grpc_subchannel_factory *subchannel_factory) { |
||||
unix_resolver *r; |
||||
|
||||
if (0 != strcmp(uri->authority, "")) { |
||||
gpr_log(GPR_ERROR, "authority based uri's not supported"); |
||||
return NULL; |
||||
} |
||||
|
||||
r = gpr_malloc(sizeof(unix_resolver)); |
||||
memset(r, 0, sizeof(*r)); |
||||
gpr_ref_init(&r->refs, 1); |
||||
gpr_mu_init(&r->mu); |
||||
grpc_resolver_init(&r->base, &unix_resolver_vtable); |
||||
r->subchannel_factory = subchannel_factory; |
||||
r->lb_policy_factory = lb_policy_factory; |
||||
|
||||
r->addr.sun_family = AF_UNIX; |
||||
strcpy(r->addr.sun_path, uri->path); |
||||
r->addr_len = strlen(r->addr.sun_path) + sizeof(r->addr.sun_family) + 1; |
||||
|
||||
grpc_subchannel_factory_ref(subchannel_factory); |
||||
return &r->base; |
||||
} |
||||
|
||||
/*
|
||||
* FACTORY |
||||
*/ |
||||
|
||||
static void unix_factory_ref(grpc_resolver_factory *factory) {} |
||||
|
||||
static void unix_factory_unref(grpc_resolver_factory *factory) {} |
||||
|
||||
static grpc_resolver *unix_factory_create_resolver( |
||||
grpc_resolver_factory *factory, grpc_uri *uri, |
||||
grpc_subchannel_factory *subchannel_factory) { |
||||
return unix_create(uri, grpc_create_pick_first_lb_policy, subchannel_factory); |
||||
} |
||||
|
||||
static const grpc_resolver_factory_vtable unix_factory_vtable = { |
||||
unix_factory_ref, unix_factory_unref, unix_factory_create_resolver}; |
||||
static grpc_resolver_factory unix_resolver_factory = {&unix_factory_vtable}; |
||||
|
||||
grpc_resolver_factory *grpc_unix_resolver_factory_create() { |
||||
return &unix_resolver_factory; |
||||
} |
||||
|
||||
#endif |
||||
@ -0,0 +1,191 @@ |
||||
/*
|
||||
* |
||||
* 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/surface/channel.h" |
||||
|
||||
#include <grpc/support/alloc.h> |
||||
#include <grpc/support/log.h> |
||||
|
||||
#include "src/core/channel/client_channel.h" |
||||
#include "src/core/iomgr/alarm.h" |
||||
#include "src/core/surface/completion_queue.h" |
||||
|
||||
grpc_connectivity_state grpc_channel_check_connectivity_state( |
||||
grpc_channel *channel, int try_to_connect) { |
||||
/* forward through to the underlying client channel */ |
||||
grpc_channel_element *client_channel_elem = |
||||
grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel)); |
||||
if (client_channel_elem->filter != &grpc_client_channel_filter) { |
||||
gpr_log(GPR_ERROR, |
||||
"grpc_channel_check_connectivity_state called on something that is " |
||||
"not a client channel, but '%s'", |
||||
client_channel_elem->filter->name); |
||||
return GRPC_CHANNEL_FATAL_FAILURE; |
||||
} |
||||
return grpc_client_channel_check_connectivity_state(client_channel_elem, |
||||
try_to_connect); |
||||
} |
||||
|
||||
typedef enum { |
||||
WAITING, |
||||
CALLING_BACK, |
||||
CALLING_BACK_AND_FINISHED, |
||||
CALLED_BACK |
||||
} callback_phase; |
||||
|
||||
typedef struct { |
||||
gpr_mu mu; |
||||
callback_phase phase; |
||||
int success; |
||||
grpc_iomgr_closure on_complete; |
||||
grpc_alarm alarm; |
||||
grpc_connectivity_state state; |
||||
grpc_connectivity_state *optional_new_state; |
||||
grpc_completion_queue *cq; |
||||
grpc_cq_completion completion_storage; |
||||
grpc_channel *channel; |
||||
void *tag; |
||||
} state_watcher; |
||||
|
||||
static void delete_state_watcher(state_watcher *w) { |
||||
grpc_channel_element *client_channel_elem = |
||||
grpc_channel_stack_last_element(grpc_channel_get_channel_stack(w->channel)); |
||||
grpc_client_channel_del_interested_party(client_channel_elem, grpc_cq_pollset(w->cq)); |
||||
GRPC_CHANNEL_INTERNAL_UNREF(w->channel, "watch_connectivity"); |
||||
gpr_mu_destroy(&w->mu); |
||||
gpr_free(w); |
||||
} |
||||
|
||||
static void finished_completion(void *pw, grpc_cq_completion *ignored) { |
||||
int delete = 0; |
||||
state_watcher *w = pw; |
||||
gpr_mu_lock(&w->mu); |
||||
switch (w->phase) { |
||||
case WAITING: |
||||
case CALLED_BACK: |
||||
gpr_log(GPR_ERROR, "should never reach here"); |
||||
abort(); |
||||
break; |
||||
case CALLING_BACK: |
||||
w->phase = CALLED_BACK; |
||||
break; |
||||
case CALLING_BACK_AND_FINISHED: |
||||
delete = 1; |
||||
break; |
||||
} |
||||
gpr_mu_unlock(&w->mu); |
||||
|
||||
if (delete) { |
||||
delete_state_watcher(w); |
||||
} |
||||
} |
||||
|
||||
static void partly_done(state_watcher *w, int due_to_completion) { |
||||
int delete = 0; |
||||
|
||||
if (due_to_completion) { |
||||
gpr_mu_lock(&w->mu); |
||||
w->success = 1; |
||||
gpr_mu_unlock(&w->mu); |
||||
grpc_alarm_cancel(&w->alarm); |
||||
} |
||||
|
||||
gpr_mu_lock(&w->mu); |
||||
switch (w->phase) { |
||||
case WAITING: |
||||
w->phase = CALLING_BACK; |
||||
if (w->optional_new_state) { |
||||
*w->optional_new_state = w->state; |
||||
} |
||||
grpc_cq_end_op(w->cq, w->tag, w->success, finished_completion, w, |
||||
&w->completion_storage); |
||||
break; |
||||
case CALLING_BACK: |
||||
w->phase = CALLING_BACK_AND_FINISHED; |
||||
break; |
||||
case CALLING_BACK_AND_FINISHED: |
||||
gpr_log(GPR_ERROR, "should never reach here"); |
||||
abort(); |
||||
break; |
||||
case CALLED_BACK: |
||||
delete = 1; |
||||
break; |
||||
} |
||||
gpr_mu_unlock(&w->mu); |
||||
|
||||
if (delete) { |
||||
delete_state_watcher(w); |
||||
} |
||||
} |
||||
|
||||
static void watch_complete(void *pw, int success) { partly_done(pw, 1); } |
||||
|
||||
static void timeout_complete(void *pw, int success) { partly_done(pw, 0); } |
||||
|
||||
void grpc_channel_watch_connectivity_state( |
||||
grpc_channel *channel, grpc_connectivity_state last_observed_state, |
||||
grpc_connectivity_state *optional_new_state, gpr_timespec deadline, |
||||
grpc_completion_queue *cq, void *tag) { |
||||
grpc_channel_element *client_channel_elem = |
||||
grpc_channel_stack_last_element(grpc_channel_get_channel_stack(channel)); |
||||
state_watcher *w = gpr_malloc(sizeof(*w)); |
||||
|
||||
grpc_cq_begin_op(cq); |
||||
|
||||
gpr_mu_init(&w->mu); |
||||
grpc_iomgr_closure_init(&w->on_complete, watch_complete, w); |
||||
w->phase = WAITING; |
||||
w->state = last_observed_state; |
||||
w->success = 0; |
||||
w->optional_new_state = optional_new_state; |
||||
w->cq = cq; |
||||
w->tag = tag; |
||||
w->channel = channel; |
||||
|
||||
grpc_alarm_init( |
||||
&w->alarm, gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC),
|
||||
timeout_complete, w, gpr_now(GPR_CLOCK_MONOTONIC)); |
||||
|
||||
if (client_channel_elem->filter != &grpc_client_channel_filter) { |
||||
gpr_log(GPR_ERROR, |
||||
"grpc_channel_watch_connectivity_state called on something that is " |
||||
"not a client channel, but '%s'", |
||||
client_channel_elem->filter->name); |
||||
grpc_iomgr_add_delayed_callback(&w->on_complete, 1); |
||||
} else { |
||||
GRPC_CHANNEL_INTERNAL_REF(channel, "watch_connectivity"); |
||||
grpc_client_channel_add_interested_party(client_channel_elem, grpc_cq_pollset(cq)); |
||||
grpc_client_channel_watch_connectivity_state(client_channel_elem, &w->state, |
||||
&w->on_complete); |
||||
} |
||||
} |
||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in new issue