OCB v0.107.0 and onward no longer report version on command line

[jackgopack4]

After merging #608 and releasing ocb version v0.107.0, ocb binary no longer shows the version and date from v0.106.1 and earlier, instead displaying devel

Issue first raised by @Tim Chan on the CNCF Slack:

hey everyone, quick question, does anyone know why the verison says: (devel) for v107 and newer? i ran v106.1 and it doesn't show up as (devel)

downloaded/run v0.107:

➜  ~ curl -L -o "/Users/timothy.chan/bin/opentelemetry-collector-builder" https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/cmd/builder/v0.107.0/ocb_0.107.0_darwin_arm64

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 7254k  100 7254k    0     0  6117k      0  0:00:01  0:00:01 --:--:-- 11.0M

➜  ~ /Users/timothy.chan/bin/opentelemetry-collector-builder                                                                                                                                       

2024-09-17T15:58:47.244-0700	INFO	internal/command.go:125	OpenTelemetry Collector Builder	{"version": "(devel)"}
2024-09-17T15:58:47.244-0700	INFO	internal/command.go:136	Using default build configuration
2024-09-17T15:58:47.245-0700	INFO	builder/config.go:142	Using go	{"go-executable": "/opt/homebrew/bin/go"}

v0.106.1:

➜  ~ curl -L -o "/Users/timothy.chan/bin/opentelemetry-collector-builder" https://github.com/open-telemetry/opentelemetry-collector/releases/download/cmd/builder/v0.106.1/ocb_0.106.1_darwin_arm64 

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 7237k  100 7237k    0     0  4748k      0  0:00:01  0:00:01 --:--:-- 9494k

➜  ~ /Users/timothy.chan/bin/opentelemetry-collector-builder                                                                                                                                       

2024-09-17T15:57:41.029-0700	INFO	internal/command.go:125	OpenTelemetry Collector Builder	{"version": "0.106.1", "date": "2024-07-30T18:19:16Z"}
2024-09-17T15:57:41.029-0700	INFO	internal/command.go:136	Using default build configuration
2024-09-17T15:57:41.030-0700	INFO	builder/config.go:142	Using go	{"go-executable": "/opt/homebrew/bin/go"}

[dosubot]

Hey @jackgopack4, I'm a bot designed to help you solve bugs, answer questions, and become a contributor. I'm here to assist you while waiting for a human maintainer. 🤖

The OCB binary on version 0.107.0 and onward shows "devel" instead of the appropriate version number because the go install command used in the Makefile does not specify the version correctly. The -ldflags option should include the version information, but it is currently set to -s -w which strips debug information and reduces binary size, but does not set the version.

Here is the relevant part of the Makefile:

CGO_ENABLED=0 go install -trimpath -ldflags="-s -w" go.opentelemetry.io/collector/cmd/builder@v$(OTELCOL_BUILDER_VERSION)

To fix this, you need to modify the -ldflags to include the version information. For example:

CGO_ENABLED=0 go install -trimpath -ldflags="-s -w -X main.version=$(OTELCOL_BUILDER_VERSION)" go.opentelemetry.io/collector/cmd/builder@v$(OTELCOL_BUILDER_VERSION)

This will embed the version number into the binary, ensuring that it shows the correct version instead of "devel" ^[1].

To continue talking to Dosu, mention @dosu.

[TylerHelmuth]

I believe our goreleaser file isn't correct. It is missing:

    ldflags:
      - -s -w -X go.opentelemetry.io/collector/cmd/builder/internal.version={{.Version}} -X go.opentelemetry.io/collector/cmd/builder/internal.date={{.Date}}

Old PR: https://github.com/open-telemetry/opentelemetry-collector/pull/10710/files#diff-707c9d3ba33af8bafe1fce966f4f7f6f6a756061e9798d2fcf5f58a517c28682

[jackgopack4]

yes @TylerHelmuth you're right; working on the PR to re-add that. Also had to submit a PR for opentelemetry-collector; some code was removed in version.go that was actually enabling setting/viewing the version number when running the binary: open-telemetry/opentelemetry-collector#11208

[jackgopack4]

#665 still needs to be merged in order to fix version before v0.111.0