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xds: support load reporting all clusters option and fix actual report interval measurement - #7209
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voidzcy merged 3 commits intoJul 22, 2020
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…nterval measurement for each individual cluster:eds_service.
dapengzhang0
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Jul 21, 2020
| private LoadStatsEntity(LoadStatsStore loadStatsStore, Stopwatch stopwatch) { | ||
| this.loadStatsStore = loadStatsStore; | ||
| this.stopwatch = stopwatch; | ||
| stopwatch.reset().start(); |
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Better to pass a StopwatchSupplier in constructor, and create a new stopwatch here, so that it's clear that the stopwatch's lifecycle is solely managed by the LoadStatsEntity.
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Updated to take the stopwatch supplier from the LrsClient directly.
dapengzhang0
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Jul 22, 2020
voidzcy
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Aug 11, 2020
… interval measurement (grpc#7209) - Add support for send_all_clusters field in LRS response. When it is set to true, just send load reports for clusters that the client is currently tracking (aka, is sending load to). - The actual load report interval (in each ClusterStats message, which contains the stats for each cluster:eds_service) should be tracked individually.
voidzcy
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Aug 11, 2020
… interval measurement (grpc#7209) - Add support for send_all_clusters field in LRS response. When it is set to true, just send load reports for clusters that the client is currently tracking (aka, is sending load to). - The actual load report interval (in each ClusterStats message, which contains the stats for each cluster:eds_service) should be tracked individually.
voidzcy
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Aug 11, 2020
… interval measurement (v1.31.x backport) (#7209) (#7315) - Add support for send_all_clusters field in LRS response. When it is set to true, just send load reports for clusters that the client is currently tracking (aka, is sending load to). - The actual load report interval (in each ClusterStats message, which contains the stats for each cluster:eds_service) should be tracked individually.
dfawley
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Jan 15, 2021
… interval measurement (grpc#7209) - Add support for send_all_clusters field in LRS response. When it is set to true, just send load reports for clusters that the client is currently tracking (aka, is sending load to). - The actual load report interval (in each ClusterStats message, which contains the stats for each cluster:eds_service) should be tracked individually.
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Two changes for
LoadReportClientin this PR:Add support for
send_all_clustersfield in LRS response.true, just send load reports for clusters that the client is currently tracking (aka, is sending load to).The actual load report interval (in each
ClusterStatsmessage, which contains the stats for each cluster:eds_service) is tracked individually.Example:
Initially, if the client has load stats recorded for
cluster-foo:eds_service-fooandcluster-bar:eds_service-barwhile the management server is only asking for load stats forcluster-foo:eds_service-footo be reported every 10 seconds. The actual LRS requests sent to the management server should contain only oneClusterStatsmessage (forcluster-foo:eds_service-foo) with load report interval being 10 seconds. After a while, the management server asks load stats forcluster-bar:eds_service-bar. Then the first LRS request after that should containClusterStatsforcluster-bar:eds_service-barshould set its actual load report interval to the whole period from the beginning (Although the definition of "beginning" is unclear here. We use the time when the client starts to know the cluster while Envoy uses epoch. I think it shouldn't matter much for the first report of the cluster:eds_service). The point of this change is the actual load report interval for each cluster should be tracked individually as loads for clusters are not necessarily reported together.For reference, see Enovy's implementation.