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clientimpl_loadreport.go
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/
clientimpl_loadreport.go
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/*
*
* Copyright 2019 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.
*/
package xdsclient
import (
"google.golang.org/grpc/internal/xds/bootstrap"
"google.golang.org/grpc/xds/internal/xdsclient/load"
)
// ReportLoad starts a load reporting stream to the given server. All load
// reports to the same server share the LRS stream.
//
// It returns a Store for the user to report loads, a function to cancel the
// load reporting stream.
func (c *clientImpl) ReportLoad(server *bootstrap.ServerConfig) (*load.Store, func()) {
c.authorityMu.Lock()
a, err := c.newAuthorityLocked(server)
if err != nil {
c.authorityMu.Unlock()
c.logger.Infof("xds: failed to connect to the control plane to do load reporting for authority %q: %v", server, err)
return nil, func() {}
}
// Hold the ref before starting load reporting.
a.refLocked()
c.authorityMu.Unlock()
store, cancelF := a.reportLoad()
return store, func() {
cancelF()
c.unrefAuthority(a)
}
}