api: delete LoadBalancer.Helper APIs that had been deprecated for a long time #7793
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We should migrate them before merging this PR. |
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dapengzhang0
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Jan 11, 2021
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Delete a bunch of old LoadBalancer.Helper APIs that had been deprecated for a long time.
createSubchannel(EquivalentAddressGroup addrs, Attributes attrs)createSubchannel(List<EquivalentAddressGroup> addrs, Attributes attrs)Deprecated in api: pass Subchannel state updates to SubchannelStateListener rather than LoadBalancer (take 2) #5722 (v1.22)
updateSubchannelAddresses(Subchannel subchannel, EquivalentAddressGroup addrs)updateSubchannelAddresses(Subchannel subchannel, List<EquivalentAddressGroup> addrs)Deprecated in api: deprecate Helper.updateSubchannelAddresses() and add equivalent on Subchannel #5802 (v1.22)
These deprecated APIs has stronger implementation requirement for synchronization as they originally did not require invocations to be from the SynchronizationContext (although a logged warning was added later if detected the call is not from the SynchronizationContext). Their replacements relaxed the burden for implementations to be thread-safe and would throw if calls are not from the SynchronizationContext.
Other old deprecated APIs are:
runSerialized(Runnable task): deprecated in core: SynchronizationContext exposed by LoadBalancer.Helper #4971 (v1.17)getNameResolverFactory(): deprecated in core: deprecate LoadBalancer.Helper#getNameResolverFactory #5418 (1.20.0)TODO: will need to migrate internal usages.