diff options
Diffstat (limited to 'src/core/ext/filters/client_channel/subchannel.h')
| -rw-r--r-- | src/core/ext/filters/client_channel/subchannel.h | 81 |
1 files changed, 37 insertions, 44 deletions
diff --git a/src/core/ext/filters/client_channel/subchannel.h b/src/core/ext/filters/client_channel/subchannel.h index 9d34fff07a..b7593ec911 100644 --- a/src/core/ext/filters/client_channel/subchannel.h +++ b/src/core/ext/filters/client_channel/subchannel.h @@ -21,8 +21,10 @@ #include "src/core/ext/filters/client_channel/connector.h" #include "src/core/lib/channel/channel_stack.h" +#include "src/core/lib/gpr/arena.h" +#include "src/core/lib/gprpp/ref_counted.h" +#include "src/core/lib/gprpp/ref_counted_ptr.h" #include "src/core/lib/iomgr/polling_entity.h" -#include "src/core/lib/support/arena.h" #include "src/core/lib/transport/connectivity_state.h" #include "src/core/lib/transport/metadata.h" @@ -32,7 +34,6 @@ /** A (sub-)channel that knows how to connect to exactly one target address. Provides a target for load balancing. */ typedef struct grpc_subchannel grpc_subchannel; -typedef struct grpc_connected_subchannel grpc_connected_subchannel; typedef struct grpc_subchannel_call grpc_subchannel_call; typedef struct grpc_subchannel_args grpc_subchannel_args; typedef struct grpc_subchannel_key grpc_subchannel_key; @@ -48,10 +49,6 @@ typedef struct grpc_subchannel_key grpc_subchannel_key; grpc_subchannel_weak_ref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) \ grpc_subchannel_weak_unref((p), __FILE__, __LINE__, (r)) -#define GRPC_CONNECTED_SUBCHANNEL_REF(p, r) \ - grpc_connected_subchannel_ref((p), __FILE__, __LINE__, (r)) -#define GRPC_CONNECTED_SUBCHANNEL_UNREF(p, r) \ - grpc_connected_subchannel_unref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_CALL_REF(p, r) \ grpc_subchannel_call_ref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_CALL_UNREF(p, r) \ @@ -65,14 +62,39 @@ typedef struct grpc_subchannel_key grpc_subchannel_key; #define GRPC_SUBCHANNEL_UNREF(p, r) grpc_subchannel_unref((p)) #define GRPC_SUBCHANNEL_WEAK_REF(p, r) grpc_subchannel_weak_ref((p)) #define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) grpc_subchannel_weak_unref((p)) -#define GRPC_CONNECTED_SUBCHANNEL_REF(p, r) grpc_connected_subchannel_ref((p)) -#define GRPC_CONNECTED_SUBCHANNEL_UNREF(p, r) \ - grpc_connected_subchannel_unref((p)) #define GRPC_SUBCHANNEL_CALL_REF(p, r) grpc_subchannel_call_ref((p)) #define GRPC_SUBCHANNEL_CALL_UNREF(p, r) grpc_subchannel_call_unref((p)) #define GRPC_SUBCHANNEL_REF_EXTRA_ARGS #endif +namespace grpc_core { +class ConnectedSubchannel : public grpc_core::RefCountedWithTracing { + public: + struct CallArgs { + grpc_polling_entity* pollent; + grpc_slice path; + gpr_timespec start_time; + grpc_millis deadline; + gpr_arena* arena; + grpc_call_context_element* context; + grpc_call_combiner* call_combiner; + }; + + explicit ConnectedSubchannel(grpc_channel_stack* channel_stack); + ~ConnectedSubchannel(); + + grpc_channel_stack* channel_stack() { return channel_stack_; } + void NotifyOnStateChange(grpc_pollset_set* interested_parties, + grpc_connectivity_state* state, + grpc_closure* closure); + void Ping(grpc_closure* on_initiate, grpc_closure* on_ack); + grpc_error* CreateCall(const CallArgs& args, grpc_subchannel_call** call); + + private: + grpc_channel_stack* channel_stack_; +}; +} // namespace grpc_core + grpc_subchannel* grpc_subchannel_ref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); grpc_subchannel* grpc_subchannel_ref_from_weak_ref( @@ -83,35 +105,11 @@ grpc_subchannel* grpc_subchannel_weak_ref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_weak_unref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -grpc_connected_subchannel* grpc_connected_subchannel_ref( - grpc_connected_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -void grpc_connected_subchannel_unref( - grpc_connected_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_call_ref( grpc_subchannel_call* call GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_call_unref( grpc_subchannel_call* call GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -/** construct a subchannel call */ -typedef struct { - grpc_polling_entity* pollent; - grpc_slice path; - gpr_timespec start_time; - grpc_millis deadline; - gpr_arena* arena; - grpc_call_context_element* context; - grpc_call_combiner* call_combiner; -} grpc_connected_subchannel_call_args; - -grpc_error* grpc_connected_subchannel_create_call( - grpc_connected_subchannel* connected_subchannel, - const grpc_connected_subchannel_call_args* args, - grpc_subchannel_call** subchannel_call); - -/** process a transport level op */ -void grpc_connected_subchannel_process_transport_op( - grpc_connected_subchannel* subchannel, grpc_transport_op* op); - /** poll the current connectivity state of a channel */ grpc_connectivity_state grpc_subchannel_check_connectivity( grpc_subchannel* channel, grpc_error** error); @@ -121,17 +119,12 @@ grpc_connectivity_state grpc_subchannel_check_connectivity( void grpc_subchannel_notify_on_state_change( grpc_subchannel* channel, grpc_pollset_set* interested_parties, grpc_connectivity_state* state, grpc_closure* notify); -void grpc_connected_subchannel_notify_on_state_change( - grpc_connected_subchannel* channel, grpc_pollset_set* interested_parties, - grpc_connectivity_state* state, grpc_closure* notify); -void grpc_connected_subchannel_ping(grpc_connected_subchannel* channel, - grpc_closure* on_initiate, - grpc_closure* on_ack); - -/** retrieve the grpc_connected_subchannel - or NULL if called before - the subchannel becomes connected */ -grpc_connected_subchannel* grpc_subchannel_get_connected_subchannel( - grpc_subchannel* subchannel); + +/** retrieve the grpc_core::ConnectedSubchannel - or nullptr if not connected + * (which may happen before it initially connects or during transient failures) + * */ +grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> +grpc_subchannel_get_connected_subchannel(grpc_subchannel* c); /** return the subchannel index key for \a subchannel */ const grpc_subchannel_key* grpc_subchannel_get_key( |