chore(deps): bump google.golang.org/grpc from 1.38.0 to 1.50.0

[dependabot]

Bumps google.golang.org/grpc from 1.38.0 to 1.50.0.

Release notes

Sourced from [google.golang.org/grpc's releases](https://github.com/grpc/grpc-go/releases).

Release 1.50.0

Behavior Changes

• client: use proper "@" semantics for connecting to abstract unix sockets. ([#5678](https://github-redirect.dependabot.com/client: remove trailing null from unix abstract socket address grpc/grpc-go#5678))
  • This is technically a bug fix; the result is that the address was including a trailing NULL byte, which it should not have. This may break users creating the socket in Go by prefixing a NULL instead of an "@", though, so calling it out as a behavior change.
  • Special Thanks: @​jachor

New Features

• metadata: add experimental ValueFromIncomingContext to more efficiently retrieve a single value ([#5596](https://github-redirect.dependabot.com/metadata: add ValueFromIncomingContext to more efficiently retrieve a single value grpc/grpc-go#5596))
  • Special Thanks: @​horpto
• stats: provide peer information in HandleConn context ([#5589](https://github-redirect.dependabot.com/transport: add peer information to http2Server and http2Client context grpc/grpc-go#5589))
  • Special Thanks: @​feihu-stripe
• xds: add support for Outlier Detection, enabled by default ([#5435](https://github-redirect.dependabot.com/xds: add Outlier Detection Balancer grpc/grpc-go#5435), [#5673](https://github-redirect.dependabot.com/xds: enable Outlier Detection by default grpc/grpc-go#5673))

Bug Fixes

• client: fix deadlock in transport caused by GOAWAY racing with stream creation ([#5652](https://github-redirect.dependabot.com/transport: Fix deadlock in transport caused by GOAWAY race with new stream creation grpc/grpc-go#5652))
  • This should only occur with an HTTP/2 server that does not follow best practices of an advisory GOAWAY (not a grpc-go server).
• xds/xdsclient: fix a bug which was causing routes with cluster_specifier_plugin set to be NACKed when GRPC_EXPERIMENTAL_XDS_RLS_LB was off ([#5670](https://github-redirect.dependabot.com/xdsclient: ignore routes with cluster_specifier_plugin when GRPC_EXPERIMENTAL_XDS_RLS_LB is off grpc/grpc-go#5670))
• xds/xdsclient: NACK cluster resource if config_source_specifier in lrs_server is not self ([#5613](https://github-redirect.dependabot.com/xdsclient: NACK cluster resource if config_source_specifier in lrs_server is not self grpc/grpc-go#5613))
• xds/ringhash: fix a bug which sometimes prevents the LB policy from retrying connection attempts ([#5601](https://github-redirect.dependabot.com/xds/ringhash: make reconnection logic work for a single subConn grpc/grpc-go#5601))
• xds/ringhash: do nothing when asked to exit IDLE instead of falling back on the default channel behavior of connecting to all addresses ([#5614](https://github-redirect.dependabot.com/ringhash: implement a no-op ExitIdle() method grpc/grpc-go#5614))
• xds/rls: fix a bug which was causing the channel to be stuck in IDLE ([#5656](https://github-redirect.dependabot.com/rls: delegate pick to child policy as long as it is not in TransientFailure grpc/grpc-go#5656))
• alts: fix a bug which was setting WaitForReady on handshaker service RPCs, thereby delaying fallback when required ([#5620](https://github-redirect.dependabot.com/alts: do not set WaitForReady on handshaker service RPCs grpc/grpc-go#5620))
• gcp/observability: fix End() to cleanup global state correctly ([#5623](https://github-redirect.dependabot.com/gcp/observability: fix End() to cleanup global state correctly grpc/grpc-go#5623))

Release 1.49.0

New Features

• gcp/observability: add support for Environment Variable GRPC_CONFIG_OBSERVABILITY_JSON ([#5525](https://github-redirect.dependabot.com/gcp/observability: Add support for Environment Variable GRPC_CONFIG_OBSERVABILITY_JSON grpc/grpc-go#5525))
• gcp/observability: add support for custom tags ([#5565](https://github-redirect.dependabot.com/gcp/observability: Add support for custom tags grpc/grpc-go#5565))

Behavior Changes

• server: reduce log level from Warning to Info for early connection establishment errors ([#5524](https://github-redirect.dependabot.com/grpc: change the log-level when a new ServerTransport cannot be created grpc/grpc-go#5524))
  • Special Thanks: @​jpkrohling

Bug Fixes

• client: fix race in flow control that could lead to unexpected EOF errors ([#5494](https://github-redirect.dependabot.com/Fix race between activeStreams and bdp window size grpc/grpc-go#5494))
• client: fix a race that could cause RPCs to time out instead of failing more quickly with UNAVAILABLE ([#5503](https://github-redirect.dependabot.com/client: fix stream creation issue with transparent retry grpc/grpc-go#5503))
• client & server: fix a panic caused by passing a nil stats handler to grpc.WithStatsHandler or grpc.StatsHandler ([#5543](https://github-redirect.dependabot.com/grpc: prevent a nil stats handler from causing a panic grpc/grpc-go#5543))
• transport/server: fix a race that could cause a stray header to be sent ([#5513](https://github-redirect.dependabot.com/transport/server: fix race that could cause a stray header to be sent grpc/grpc-go#5513))
• balancer: give precedence to IDLE over TRANSIENT_FAILURE when aggregating connectivity state ([#5473](https://github-redirect.dependabot.com/balancer: fix connectivity state aggregation algorithm to follow the spec grpc/grpc-go#5473))
• xds/xdsclient: request correct resource name when user specifies a new style resource name with empty authority ([#5488](https://github-redirect.dependabot.com/xdsclient: handle empty authority in new style resource names grpc/grpc-go#5488))
• xds/xdsclient: NACK endpoint resources with zero weight ([#5560](https://github-redirect.dependabot.com/xdsclient: NACK endpoint resources with zero weight grpc/grpc-go#5560))
• xds/xdsclient: fix bug that would reset resource version information after ADS stream restart ([#5422](https://github-redirect.dependabot.com/xdsclient: don't reset version info after stream restart grpc/grpc-go#5422))
• xds/xdsclient: fix goroutine leaks when load reporting is enabled ([#5505](https://github-redirect.dependabot.com/xdsclient: fix LRS stream leaks when errors are encountered grpc/grpc-go#5505))
• xds/ringhash: fix config update processing to recreate ring and picker when min/max ring size changes ([#5557](https://github-redirect.dependabot.com/ringhash: handle config updates properly grpc/grpc-go#5557))

... (truncated)

Commits

• c1d7d7a Change version to 1.50.0 ([#5685](https://github-redirect.dependabot.com/Change version to 1.50.0 grpc/grpc-go#5685))
• 1451c62 internal/transport: optimize grpc-message encoding/decoding ([#5654](https://github-redirect.dependabot.com/internal/transport: optimize grpc-message encoding/decoding grpc/grpc-go#5654))
• be4b63b test: minor test cleanup ([#5679](https://github-redirect.dependabot.com/test: minor test cleanup grpc/grpc-go#5679))
• d83070e Changed Outlier Detection Env Var to default true ([#5673](https://github-redirect.dependabot.com/xds: enable Outlier Detection by default grpc/grpc-go#5673))
• 54521b2 client: remove trailing null from unix abstract socket address ([#5678](https://github-redirect.dependabot.com/client: remove trailing null from unix abstract socket address grpc/grpc-go#5678))
• 36e4810 orca: cleanup old code, and get grpc package to use new code ([#5627](https://github-redirect.dependabot.com/orca: cleanup old code, and get grpc package to use new code grpc/grpc-go#5627))
• e8866a8 build: harden GitHub Workflow permissions ([#5660](https://github-redirect.dependabot.com/GitHub: restrict permissions in release workflow grpc/grpc-go#5660))
• 8458251 xdsclient: ignore routes with cluster_specifier_plugin when GRPC_EXPERIMENTAL...
• a238ceb xDS: Outlier Detection Env Var not hardcoded to false ([#5664](https://github-redirect.dependabot.com/xDS: allow environment variable to enable Outlier Detection grpc/grpc-go#5664))
• b1d7f56 transport: Fix deadlock in transport caused by GOAWAY race with new stream cr...
• Additional commits viewable in [compare view](https://github.com/grpc/grpc-go/compare/v1.38.0...v1.50.0)

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[dependabot]

Superseded by #586.