x/build/cmd/gopherbot: wait-author tag not being auto-removed from updated CLs

[bradfitz]

Gopherbot is supposed to be removing the wait-author tag on CLs when an OP replies or updates a new patchset.

I've noticed it hasn't been. Here's an example:

https://go-review.googlesource.com/c/go/+/142537

I added the tag at https://go-review.googlesource.com/c/go/+/142537#message-38fe2a310757d0fde272356e560843068aa980c3 and then PS2 was uploaded, but the wait-author tag remains.

/cc @dmitshur @katiehockman @bcmills

[dmitshur]

This is likely caused by issue #28318.

If you do go run golang.org/x/build/maintner/cmd/maintserve -http=localhost:8080, then visit http://localhost:8080/go.googlesource.com/go and search for "#142537", you'll see that maintner reports that CL as not having any tags:

As a result, gopherbot doesn't believe that the CL has a wait-author tag, so it doesn't try to remove it.

[dmitshur]

A simple program that confirms it:

package main

import (
	"context"
	"fmt"
	"log"

	"golang.org/x/build/maintner/godata"
)

func main() {
	corpus, err := godata.Get(context.Background())
	if err != nil {
		log.Fatalln(err)
	}
	cl := corpus.Gerrit().Project("go.googlesource.com", "go").CL(142537)
	fmt.Printf("tags = %q\n", cl.Meta.Hashtags())

	// Output:
	// tags = ""
}

[Skarlso]

Note here too. I volunteered for the fix of the corresponding issue #25253.

[Skarlso]

Tags are now correctly displayed on a local test run:

And the linked issue:

[gopherbot]

Change https://golang.org/cl/152779 mentions this issue: maintner: fix GerritMeta.Hashtags to look at earlier meta parents for answer

[bradfitz]

gopherbot was re-deployed with the maintner fix.