Problems using the Google Cloud go library for logging

Question

I am trying to use import "cloud.google.com/go/logging" with the Go example code found here: https://cloud.google.com/logging/docs/reference/libraries#using_the_client_library . With go1.15.6, I tried these things:

$ go get -u cloud.google.com/go/logging

# many errors about dependencies, so
$ go get -u github.com/google/go-cmp/cmp
$ go get -u golang.org/x/sync/semaphore

# then I can get through this one
$ go get -u cloud.google.com/go/logging

# for further amusement, these two fail with what seems to be a compiler error
$ go get cloud.google.com/go/storage
$ go get cloud.google.com/go/iam

# Then trying to build my code using Logging:
$ go build -i -v
cloud.google.com/go/logging/apiv2
# cloud.google.com/go/logging/apiv2
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:269:62: undefined: logging.ListBucketsRequest
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:310:60: undefined: logging.GetBucketRequest
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:310:114: undefined: logging.LogBucket
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:328:63: undefined: logging.CreateBucketRequest
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:328:120: undefined: logging.LogBucket
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:354:63: undefined: logging.UpdateBucketRequest
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:354:120: undefined: logging.LogBucket
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:374:63: undefined: logging.DeleteBucketRequest
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:825:14: undefined: logging.LogBucket
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:840:65: undefined: logging.LogBucket
../../go/src/cloud.google.com/go/logging/apiv2/config_client.go:374:63: too many errors```

question from:https://stackoverflow.com/questions/65617575/problems-using-the-google-cloud-go-library-for-logging

Answer 1

Thanks to JimB (https://stackoverflow.com/users/32880/jimb) who provided a comment at this question Problems installing GCP go library for logging (which was rudely closed by people who don't want to try to help) that pointed in the direction of this answer.

The problem here is that you are not using modules and the Google Cloud library only supports use that way. This means you do not use go get ... at all, despite the documentation at https://cloud.google.com/logging/docs/reference/libraries#client-libraries-install-go . Instead, start by creating this go.mod file:

module example.com/mymod

go 1.15

require (
    cloud.google.com/go/logging v1.1.2
)

Then, run go build -i -v which will install all the required modules.