grpc_core::LoadBalancingPolicy::ChannelControlHelper Class Reference

A proxy object implemented by the client channel and used by the LB policy to communicate with the channel. More...

#include <lb_policy.h>

Public Types
enum	TraceSeverity { TRACE_INFO , TRACE_WARNING , TRACE_ERROR }
	Adds a trace message associated with the channel. More...

Public Member Functions
	ChannelControlHelper ()=default
virtual	~ChannelControlHelper ()=default
virtual RefCountedPtr< SubchannelInterface >	CreateSubchannel (ServerAddress address, const grpc_channel_args &args)=0
	Creates a new subchannel with the specified channel args. More...
virtual void	UpdateState (grpc_connectivity_state state, const absl::Status &status, std::unique_ptr< SubchannelPicker >)=0
	Sets the connectivity state and returns a new picker to be used by the client channel. More...
virtual void	RequestReresolution ()=0
	Requests that the resolver re-resolve. More...
virtual void	AddTraceEvent (TraceSeverity severity, absl::string_view message)=0

Detailed Description

A proxy object implemented by the client channel and used by the LB policy to communicate with the channel.

Member Enumeration Documentation

TraceSeverity

enum grpc_core::LoadBalancingPolicy::ChannelControlHelper::TraceSeverity

Adds a trace message associated with the channel.

Enumerator
TRACE_INFO
TRACE_WARNING
TRACE_ERROR

Constructor & Destructor Documentation

ChannelControlHelper()

grpc_core::LoadBalancingPolicy::ChannelControlHelper::ChannelControlHelper ( )

default

~ChannelControlHelper()

virtual grpc_core::LoadBalancingPolicy::ChannelControlHelper::~ChannelControlHelper ( )

virtualdefault

Member Function Documentation

AddTraceEvent()

virtual void grpc_core::LoadBalancingPolicy::ChannelControlHelper::AddTraceEvent ( TraceSeverity  severity, absl::string_view  message  )

pure virtual

Implemented in grpc_core::ClientChannel::ClientChannelControlHelper, and grpc_core::ChildPolicyHandler::Helper.

CreateSubchannel()

virtual RefCountedPtr<SubchannelInterface> grpc_core::LoadBalancingPolicy::ChannelControlHelper::CreateSubchannel ( ServerAddress  address, const grpc_channel_args &  args  )

pure virtual

Creates a new subchannel with the specified channel args.

Implemented in grpc_core::ClientChannel::ClientChannelControlHelper, and grpc_core::ChildPolicyHandler::Helper.

RequestReresolution()

virtual void grpc_core::LoadBalancingPolicy::ChannelControlHelper::RequestReresolution ( )

pure virtual

Requests that the resolver re-resolve.

Implemented in grpc_core::ClientChannel::ClientChannelControlHelper, and grpc_core::ChildPolicyHandler::Helper.

UpdateState()

virtual void grpc_core::LoadBalancingPolicy::ChannelControlHelper::UpdateState ( grpc_connectivity_state  state, const absl::Status &  status, std::unique_ptr< SubchannelPicker >    )

pure virtual

Sets the connectivity state and returns a new picker to be used by the client channel.

Implemented in grpc_core::ChildPolicyHandler::Helper, and grpc_core::ClientChannel::ClientChannelControlHelper.

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The documentation for this class was generated from the following file:

• src/core/ext/filters/client_channel/lb_policy.h