Nobody should directly need to reference these packages.
This is technically a breaking change. However:
- Package dns was exporting a NewBuilder method. This should never have been necessary to use, but if so, it can be replaced by importing the "grpc" package and then using resolver.Get("dns").
- Package passthrough was not exporting any symbols and there was never a need to even blank-import it.
After as much searching as possible, it appears nobody in the open source community is referencing either of these packages.
* Implement missing pieces for connection backoff.
Spec can be found here:
https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md
Summary of changes:
* Added a new type (marked experimental), ConnectParams, which contains
the knobs defined in the spec (except for minConnectTimeout).
* Added a new API (marked experimental), WithConnectParams() to return a
DialOption to dial with the provided parameters.
* Added new fields to the implementation of the exponential backoff in
internal/backoff which mirror the ones in ConnectParams.
* Marked existing APIs WithBackoffMaxDelay() and WithBackoffConfig() as
deprecated.
* Added a default exponential backoff implementation, for easy use of
internal callers.
Added a new backoff package which defines the backoff configuration
options, and is used by both the grpc package and the internal/backoff
package. This allows us to have all backoff related options in a
separate package.
Technically this is a behavior change, but any usage of "host:" or ":" should be considered invalid, since dialing a target with a trailing ":" attempts to dial port zero, which is never valid (and we always used to pass the target directly to `net.Dial`).
In https://github.com/grpc/grpc/pull/15618, the target format will be defined as: `host[:port]` -- not: `host[:[port]]`. (This is potentially subject to change.)
This fixes:
clientconn.go:948:3: should write m = cc.sc.Methods[method[:i+1]] instead of m, _ = cc.sc.Methods[method[:i+1]] (S1005)
encoding/proto/proto_test.go:43:5: should use !bytes.Equal(p.GetBody(), expectedBody) instead (S1004)
resolver/dns/dns_resolver.go:260:2: should merge variable declaration with assignment on next line (S1021)
resolver/dns/dns_resolver.go:344:2: should use 'return <expr>' instead of 'if <expr> { return <bool> }; return <bool>' (S1008)
This allows ClientConn to get more up-to-date addresses from resolver.
ClientConn compares new addresses with the cached ones. So if resolver returns the same set of addresses, ClientConn will not notify balancer about it.
Also moved the initialization of resolver and balancer to avoid race. Balancer will only be started when ClientConn gets resolved addresses from balancer.
Doug Fawley
Easwar Swaminathan
Menghan Li
Zach Reyes
Gaurav Gahlot
Joe Betz
lyuxuan
shaun
☃ Elliot Shepherd
Jean de Klerk
Jacob Hoffman-Andrews
Karsten Weiss
Keegan Carruthers-Smith
Gyuho Lee
mmukhi
Rudi C