[chore] Add add-labels workflow (open-telemetry#12478)

This PR adds a workflow that will add the "good first issue" and "help wanted" labels when someone comments on an issue with exactly "/good-first-issue" and "/help-wanted"

.github/workflows/add-labels.yml

@@ -0,0 +1,22 @@
+name: 'Add Labels'
+on:
+ issue_comment:
+ types: [created]
+
+jobs:
+ add-labels:
+ if: ${{ !github.event.issue.pull_request && (github.event.comment.body == '/help-wanted' || github.event.comment.body == '/good-first-issue' ) }}
+
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v3
+
+ - name: Run update permissions
+ run: chmod +x ./.github/workflows/scripts/add-labels.sh
+
+ - name: Run add-labels.sh
+ run: ./.github/workflows/scripts/add-labels.sh
+ env:
+ GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+ ISSUE: ${{ github.event.issue.number }}
+ COMMENT: ${{ github.event.comment.body }}

.github/workflows/scripts/add-labels.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#
+# Copyright The OpenTelemetry Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http:https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+#
+
+if [ -z "${ISSUE}" ] || [ -z "${COMMENT}" ]; then
+ exit 0
+fi
+
+declare -A labels
+labels["/good-first-issue"]="good first issue"
+labels["/help-wanted"]="help wanted"
+
+
+if [ -n "${labels["${COMMENT}"]}" ] ; then
+ gh issue edit "${ISSUE}" --add-label "${labels["${COMMENT}"]}"
+fi

.github/workflows/scripts/ping-codeowners.sh

@@ -42,5 +42,4 @@ if [[ "${OWNERS}" =~ "${SENDER}" ]]; then
  exit 0
 fi
 
-gh issue comment ${ISSUE} --body "Pinging code owners: ${OWNERS}"
-
+gh issue comment ${ISSUE} --body "Pinging code owners: ${OWNERS}. See [Adding Labels via Comments](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#adding-labels-via-comments) if you do not have permissions to add labels yourself."

CONTRIBUTING.md

@@ -150,6 +150,17 @@ in general try to follow them.
 - `replace` statements in `go.mod` files can be automatically inserted by running `make crosslink`. For more information
  on the `crosslink` tool see the README [here](https://github.com/open-telemetry/opentelemetry-go-build-tools/tree/main/crosslink).
 
+## Adding Labels via Comments
+
+In order to facilitate proper label usage and to empower Code Owners, you are able to add the following labels to issues via comments.
+
+| Label | Generating Comment |
+|--------------------|--------------------|
+| `good first issue` | /good-first-issue |
+| `help wanted` | /help-wanted |
+
+Currently, labels can only be created via comment, not deleted. You must make a new comment; you cannot edit an existing comment.
+
 ## Becoming a Code Owner
 
 A Code Owner is responsible for a component within Collector Contrib, as indicated by the [CODEOWNERS file](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/.github/CODEOWNERS). That responsibility includes maintaining the component, responding to issues, and reviewing pull requests.