Also changed circuit breaking counter implementation to move max_count into the
picker, because this is how cluster_impl is designed. Implementation in EDS is
also modified to keep max_count in picker.
- unexport `perClusterStore` and it's `stats()`
- add `Store.Stats(clusterNames)` to report loads for the given clusters
- refactor store's map to a two layer map
- move `lastLoadReportAt` from client ton the load store, because a client can now have multiple clusters, each with a different `lastLoadReportAt`
- all tests will ignore `ReportInterval` when comparing Data
Before this change, in EDS balancer, child balancer's state update is handled synchronously, which includes priority handling. This would cause a deadlock if the child policy sends a state update inline when handling addresses (e.g. when roundrobin handles empty address list).
This change moves the child balancer state handling into a goroutine, to avoid the problem.
- More logs in xds bootstrap/resolver/cds/eds
- Bootstrap file content/error
- Request/response on ADS stream
- Actions by client/resolver/balancer
- Content of updates
- Logs prefixed with component name and id
- `[xds-bootstrap]`
- `[xds-client <address>]`
- `[cds-lb <address>]`
- `[eds-lb <address>]`
* Modified tests to use tlogger.
* Fail on errors, with error expectations.
* Added expects and MixedCapsed grpclb_config tests
* Moved tlogger to grpctest, moved leakcheck tester to grpctest.go
* Added ExpectErrorN()
* Removed redundant leak checks
* Fixed new test
* Made tlogger globals into tlogger methods
* ErrorsLeft -> EndTest
* Removed some redundant lines
* Fixed error in test and empty map in EndTest
edsBalancer (the old xds balancer) was in `package balancer`, one level above the eds implementation. It's a thin wrapper of the eds impl (and fallback in the future).
This change moves the thin wrapper to `package edsbalancer`, and also renames some structs.
Menghan Li