loadbalancerexporter and ambiguous imports (ocb)

[jvilhuber]

I'm trying to build a custom otel-collector to include the loadbalancerexporter (among other things; see config below), and am running into errors such as "ambiguous import: found package cloud.google.com/go/compute/metadata in multiple modules".

Can someone help with a builder config.yaml that successfully includes the load-balancer exporter?

Using the 0.50.0 builder (commented out all the other ones for troubleshooting; some others, like jaegerexporter also throw similar errors):

$ cat otelcol-builder-template.yaml
exporters:
  #- import: go.opentelemetry.io/collector/exporter/loggingexporter
  #  gomod: go.opentelemetry.io/collector v0.50.0
  - gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/loadbalancingexporter v0.50.0"
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/jaegerexporter v0.50.0"
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/prometheusexporter  v0.50.0"

receivers:
  #- import: go.opentelemetry.io/collector/receiver/otlpreceiver
  #  gomod: go.opentelemetry.io/collector v0.50.0
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/jaegerreceiver  v0.50.0"

processors:
  #- import: github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor
  #  gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor v0.50.0"
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/probabilisticsamplerprocessor  v0.50.0"
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/spanmetricsprocessor v0.50.0"
  #- gomod: "github.com/open-telemetry/opentelemetry-collector-contrib/processor/attributesprocessor v0.50.0"

Results in

$ ./ocb --config otelcol-builder-template.yaml
2022-05-05T11:12:38.526+0700	INFO	internal/command.go:85	OpenTelemetry Collector distribution builder	{"version": "0.50.0", "date": "2022-04-28T20:42:56Z"}
2022-05-05T11:12:38.527+0700	INFO	internal/command.go:108	Using config file	{"path": "otelcol-builder-template.yaml"}
2022-05-05T11:12:38.530+0700	INFO	builder/config.go:99	Using go	{"go-executable": "/opt/homebrew/bin/go"}
2022-05-05T11:12:38.531+0700	INFO	builder/main.go:76	Sources created	{"path": "/var/folders/s5/8qspwhrs4438zmz3q_yh6kh80000gs/T/otelcol-distribution4228756327"}
Error: failed to update go.mod: exit status 1. Output: "go.opentelemetry.io/collector/cmd/builder imports\n\tgithub.com/open-telemetry/opentelemetry-collector-contrib/exporter/loadbalancingexporter imports\n\tgo.opentelemetry.io/collector/exporter/otlpexporter imports\n\tgo.opentelemetry.io/collector/config/configgrpc imports\n\tgo.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc tested by\n\tgo.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc.test imports\n\tgoogle.golang.org/grpc/interop imports\n\tgolang.org/x/oauth2/google imports\n\tcloud.google.com/go/compute/metadata: ambiguous import: found package cloud.google.com/go/compute/metadata in multiple modules:\n\tcloud.google.com/go v0.65.0 (/Users/jvilhuber/go/pkg/mod/cloud.google.com/[email protected]/compute/metadata)\n\tcloud.google.com/go/compute v1.6.0 (/Users/jvilhuber/go/pkg/mod/cloud.google.com/go/[email protected]/metadata)\n"

[pmm-sumo]

It seems that this replace directive is needed: https://github.com/open-telemetry/opentelemetry-collector-releases/blob/main/distributions/otelcol-contrib/manifest.yaml#L151-L153

[jvilhuber]

Thanks. For posterity, I added

replaces:
  # See https://github.com/google/gnostic/issues/262
  - github.com/googleapis/gnostic v0.5.6 => github.com/googleapis/gnostic v0.5.5