channel_connectivity.cc File Reference

#include <grpc/support/port_platform.h>
#include "src/core/lib/surface/channel.h"
#include <grpc/support/log.h>
#include "src/core/ext/filters/client_channel/client_channel.h"
#include "src/core/lib/iomgr/timer.h"
#include "src/core/lib/surface/api_trace.h"
#include "src/core/lib/surface/completion_queue.h"

Namespaces
	grpc_core
	Round Robin Policy.

Functions
grpc_connectivity_state	grpc_channel_check_connectivity_state (grpc_channel *channel, int try_to_connect)
	Check the connectivity state of a channel. More...
int	grpc_channel_num_external_connectivity_watchers (grpc_channel *channel)
	Number of active "external connectivity state watchers" attached to a channel. More...
int	grpc_channel_support_connectivity_watcher (grpc_channel *channel)
	Check whether a grpc channel supports connectivity watcher. More...
void	grpc_channel_watch_connectivity_state (grpc_channel *channel, grpc_connectivity_state last_observed_state, gpr_timespec deadline, grpc_completion_queue *cq, void *tag)
	Watch for a change in connectivity state. More...

Function Documentation

grpc_channel_check_connectivity_state()

grpc_connectivity_state grpc_channel_check_connectivity_state	(	grpc_channel *	channel,
		int	try_to_connect
	)

Check the connectivity state of a channel.

grpc_channel_num_external_connectivity_watchers()

int grpc_channel_num_external_connectivity_watchers

(

grpc_channel *

channel

)

Number of active "external connectivity state watchers" attached to a channel.

Useful for testing.

grpc_channel_support_connectivity_watcher()

int grpc_channel_support_connectivity_watcher

(

grpc_channel *

channel

)

Check whether a grpc channel supports connectivity watcher.

grpc_channel_watch_connectivity_state()

void grpc_channel_watch_connectivity_state	(	grpc_channel *	channel,
		grpc_connectivity_state	last_observed_state,
		gpr_timespec	deadline,
		grpc_completion_queue *	cq,
		void *	tag
	)

Watch for a change in connectivity state.

Once the channel connectivity state is different from last_observed_state, tag will be enqueued on cq with success=1. If deadline expires BEFORE the state is changed, tag will be enqueued on cq with success=0.