Etcd: Cannot compile client using Go modules

[nnathan]

I'm trying to write a program using the clientv3 client.

package main

import (
    "fmt"
    "time"

    "github.com/coreos/etcd/clientv3"
)

func main() {
    baseconfig := clientv3.Config{
        Endpoints:            []string{"http://127.0.0.1:2379"},
        DialTimeout:          2 * time.Second,
        DialKeepAliveTime:    2 * time.Second,
        DialKeepAliveTimeout: 6 * time.Second,
    }

    client, err := clientv3.New(baseconfig)

    if err != nil {
        fmt.Printf("error creating client: %v", err)
    }

    _ = client
}

I'm also using Go modules. When I try to build the example program:

$ go build
go: finding module for package github.com/coreos/etcd/clientv3
go: downloading github.com/coreos/etcd v0.5.0-alpha.5
go: found github.com/coreos/etcd/clientv3 in github.com/coreos/etcd v3.3.22+incompatible
go: finding module for package google.golang.org/grpc/keepalive
go: finding module for package github.com/google/uuid
go: finding module for package github.com/golang/protobuf/proto
go: finding module for package google.golang.org/grpc/credentials
go: finding module for package github.com/coreos/pkg/capnslog
go: finding module for package google.golang.org/grpc
go: finding module for package google.golang.org/grpc/grpclog
go: finding module for package go.uber.org/zap
go: finding module for package google.golang.org/grpc/metadata
go: finding module for package google.golang.org/grpc/resolver
go: finding module for package go.uber.org/zap/zapcore
go: finding module for package github.com/gogo/protobuf/gogoproto
go: finding module for package github.com/coreos/go-semver/semver
go: finding module for package google.golang.org/genproto/googleapis/api/annotations
go: finding module for package github.com/coreos/go-systemd/journal
go: finding module for package google.golang.org/grpc/balancer
go: finding module for package google.golang.org/grpc/resolver/dns
go: downloading google.golang.org/genproto v0.0.0-20200612171551-7676ae05be11
go: finding module for package google.golang.org/grpc/status
go: finding module for package google.golang.org/grpc/codes
go: finding module for package google.golang.org/grpc/resolver/passthrough
go: finding module for package google.golang.org/grpc/connectivity
go: found github.com/coreos/pkg/capnslog in github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f
go: found github.com/google/uuid in github.com/google/uuid v1.1.1
go: found go.uber.org/zap in go.uber.org/zap v1.15.0
go: found google.golang.org/grpc in google.golang.org/grpc v1.29.1
go: found github.com/gogo/protobuf/gogoproto in github.com/gogo/protobuf v1.3.1
go: found github.com/golang/protobuf/proto in github.com/golang/protobuf v1.4.2
go: found google.golang.org/genproto/googleapis/api/annotations in google.golang.org/genproto v0.0.0-20200612171551-7676ae05be11
go: found github.com/coreos/go-systemd/journal in github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf
go: found github.com/coreos/go-semver/semver in github.com/coreos/go-semver v0.3.0
# github.com/coreos/etcd/clientv3/balancer/picker
../../go/pkg/mod/github.com/coreos/[email protected]+incompatible/clientv3/balancer/picker/err.go:37:44: undefined: balancer.PickOptions
../../go/pkg/mod/github.com/coreos/[email protected]+incompatible/clientv3/balancer/picker/roundrobin_balanced.go:55:54: undefined: balancer.PickOptions
# github.com/coreos/etcd/clientv3/balancer/resolver/endpoint
../../go/pkg/mod/github.com/coreos/[email protected]+incompatible/clientv3/balancer/resolver/endpoint/endpoint.go:114:78: undefined: resolver.BuildOption
../../go/pkg/mod/github.com/coreos/[email protected]+incompatible/clientv3/balancer/resolver/endpoint/endpoint.go:182:31: undefined: resolver.ResolveNowOption

Maybe I shouldn't be building off the latest tree, but I don't know how to dial back to a stable version of etcd using go modules either. Any help would be appreciated.

[SKowshik4614]

I am having the same issue as well, tried manually cloning 3.4 version ran into same error.

[tennessine]

Is this project dead?
It's so hard to use, even write a simple hello world example.
Why?

[nnathan]

@tennessine It seems to be impossible to contact with anyone that works on etcd.

[limingyao]

google.golang.org/grpc v1.26.0

[cfc4n]

@gyuho go mod will get lastest version package default. GRPC-GO's lastest version was 1.29.1 at https://pkg.go.dev/google.golang.org/grpc?tab=doc . Do you have some ideas about this bug?
add a go.mod file to git repository?

ref. https://github.com/etcd-io/etcd/issues/11931

/cc @gyuho @mitake @spzala

[cfc4n]

@nnathan or use this shell

$ go mod edit -replace=google.golang.org/grpc=google.golang.org/[email protected]
$ make

[stale[bot]]

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