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dump.go
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dump.go
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/*
*
* Copyright 2021 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 anypb "github.com/golang/protobuf/ptypes/any"
// UpdateWithMD contains the raw message of the update and the metadata,
// including version, raw message, timestamp.
//
// This is to be used for config dump and CSDS, not directly by users (like
// resolvers/balancers).
type UpdateWithMD struct {
MD UpdateMetadata
Raw *anypb.Any
}
func rawFromCache(s string, cache interface{}) *anypb.Any {
switch c := cache.(type) {
case map[string]ListenerUpdate:
v, ok := c[s]
if !ok {
return nil
}
return v.Raw
case map[string]RouteConfigUpdate:
v, ok := c[s]
if !ok {
return nil
}
return v.Raw
case map[string]ClusterUpdate:
v, ok := c[s]
if !ok {
return nil
}
return v.Raw
case map[string]EndpointsUpdate:
v, ok := c[s]
if !ok {
return nil
}
return v.Raw
default:
return nil
}
}
func (c *clientImpl) dump(t ResourceType) (string, map[string]UpdateWithMD) {
c.mu.Lock()
defer c.mu.Unlock()
var (
version string
md map[string]UpdateMetadata
cache interface{}
)
switch t {
case ListenerResource:
version = c.ldsVersion
md = c.ldsMD
cache = c.ldsCache
case RouteConfigResource:
version = c.rdsVersion
md = c.rdsMD
cache = c.rdsCache
case ClusterResource:
version = c.cdsVersion
md = c.cdsMD
cache = c.cdsCache
case EndpointsResource:
version = c.edsVersion
md = c.edsMD
cache = c.edsCache
default:
c.logger.Errorf("dumping resource of unknown type: %v", t)
return "", nil
}
ret := make(map[string]UpdateWithMD, len(md))
for s, md := range md {
ret[s] = UpdateWithMD{
MD: md,
Raw: rawFromCache(s, cache),
}
}
return version, ret
}
// DumpLDS returns the status and contents of LDS.
func (c *clientImpl) DumpLDS() (string, map[string]UpdateWithMD) {
return c.dump(ListenerResource)
}
// DumpRDS returns the status and contents of RDS.
func (c *clientImpl) DumpRDS() (string, map[string]UpdateWithMD) {
return c.dump(RouteConfigResource)
}
// DumpCDS returns the status and contents of CDS.
func (c *clientImpl) DumpCDS() (string, map[string]UpdateWithMD) {
return c.dump(ClusterResource)
}
// DumpEDS returns the status and contents of EDS.
func (c *clientImpl) DumpEDS() (string, map[string]UpdateWithMD) {
return c.dump(EndpointsResource)
}