Small changie fixes (#4857) (#4859)

* fix broken links, update GHA to not repost comment

* tweak GHA

* convert GHA used

* consolidate GHA

* fix PR numbers and pull comment as var

* fix name of workflow step

* changie merge to fix link at top of changelog

* add changelog yaml
# Conflicts:
#	CHANGELOG.md

.changes/header.tpl.md

@@ -3,4 +3,4 @@
 - This file provides a full account of all changes to `dbt-core` and `dbt-postgres`
 - Changes are listed under the (pre)release in which they first appear. Subsequent releases include changes from previous releases.
 - "Breaking changes" listed under a version may require action from end users or external maintainers when upgrading to that version.
-- Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](CONTRIBUTING.md)
+- Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](https://github.com/dbt-labs/dbt-core/blob/main/CONTRIBUTING.md#adding-changelog-entry)

.changes/unreleased/Under the Hood-20220311-101851.yaml

@@ -0,0 +1,8 @@
+kind: Under the Hood
+body: Fix broken links for changelog generation and tweak GHA to only post a comment
+  once when changelog entry is missing.
+time: 2022-03-11T10:18:51.404524-06:00
+custom:
+  Author: emmyoop
+  Issue: "4848"
+  PR: "4857"

.github/workflows/changelog-check.yml

@@ -27,6 +27,9 @@ permissions:
   contents: read
   pull-requests: write
 
+env:
+  changelog_comment: 'Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see [the contributing guide](https://github.com/dbt-labs/dbt-core/blob/main/CONTRIBUTING.md#adding-changelog-entry).'
+
 jobs:
   changelog:
     name: changelog
@@ -48,15 +51,26 @@ jobs:
           filters: |
             changelog:
               - added: '.changes/unreleased/**.yaml'
-      - name: Check a file has been added to .changes/unreleased if required
+      - name: Check if comment already exists
+        uses: peter-evans/find-comment@v1
+        id: changelog_comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: ${{ env.changelog_comment }}
+      - name: Create PR comment if changelog entry is missing, required, and does nto exist
+        if: |
+          steps.filter.outputs.changelog == 'false' &&
+          !contains( github.event.pull_request.labels.*.name, 'Skip Changelog') &&
+          steps.changelog_comment.outputs.comment-body == ''
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          body: ${{ env.changelog_comment }}
+      - name: Fail job if changelog entry is missing and required
+        if: |
+          steps.filter.outputs.changelog == 'false' &&
+          !contains( github.event.pull_request.labels.*.name, 'Skip Changelog')
         uses: actions/github-script@v6
-        if: steps.filter.outputs.changelog == 'false' && !contains( github.event.pull_request.labels.*.name, 'Skip Changelog')
         with:
-          script: |
-            github.rest.issues.createComment({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              body: "Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see [the contributing guide](CONTRIBUTING.md)."
-            })
-            core.setFailed('Changelog entry required to merge.')
+          script: core.setFailed('Changelog entry required to merge.')

CHANGELOG.md

@@ -3,12 +3,9 @@
 - This file provides a full account of all changes to `dbt-core` and `dbt-postgres`
 - Changes are listed under the (pre)release in which they first appear. Subsequent releases include changes from previous releases.
 - "Breaking changes" listed under a version may require action from end users or external maintainers when upgrading to that version.
-- Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](CONTRIBUTING.md)
+- Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](https://github.com/dbt-labs/dbt-core/blob/main/CONTRIBUTING.md#adding-changelog-entry)
 
 
-Contributors:
-* [@twilly](https://github.com/twilly) ([#4681](https://github.com/dbt-labs/dbt-core/pull/4681))
-
 ## dbt-core 1.0.3 (February 21, 2022)
 
 ### Fixes