Merge pull request #102 from vsoch/test-envar-files

Testing to see if envar files environment variables are set (or not)

CHANGELOG.md

@@ -14,7 +14,12 @@ represented by the pull requests that fixed them. Critical items to know are:
 Versions correspond with GitHub releases that can be referenced with @ using actions.
 
 ## [master](https://github.com/vsoch/pull-request-action/tree/master) (master)
-  - forgot to add assignees (1.0.15)
-  - output and environment variables for PR number and return codes (1.0.5)
-  - added support for reviewer (individual and team) assignments (1.0.4)
-  - added support for maintainer can modify and assignees (1.0.3)
+ - alpine cannot install to system python anymore (1.1.0)
+ - bugfix of missing output values (1.0.23)
+ - bugfix of token handling if 401 error received (missing 401 case) (1.0.21)
+ - bugfix of writing to environment file (missing newline) (1.0.19)
+ - bugfix of missing from branch with scheduled run (1.0.16)
+ - forgot to add assignees (1.0.15)
+ - output and environment variables for PR number and return codes (1.0.5)
+ - added support for reviewer (individual and team) assignments (1.0.4)
+ - added support for maintainer can modify and assignees (1.0.3)

Dockerfile

@@ -7,9 +7,11 @@ LABEL "com.github.actions.description"="Create a pull request when a branch is c
 LABEL "com.github.actions.icon"="activity"
 LABEL "com.github.actions.color"="yellow"
 
-RUN apk --no-cache add python3 py3-pip git bash && \
-    pip3 install requests
+# Newer alpine we are not allowed to install to system python
+RUN apk --no-cache add python3 py3-pip py3-virtualenv git bash && \
+    python3 -m venv /opt/env && \
+    /opt/env/bin/pip3 install requests
 COPY pull-request.py /pull-request.py
 
 RUN chmod u+x /pull-request.py
-ENTRYPOINT ["python3", "/pull-request.py"]
+ENTRYPOINT ["/opt/env/bin/python3", "/pull-request.py"]

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019-2023 Vanessa Sochat
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -22,13 +22,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: pull-request-action
-        uses: vsoch/pull-request-action@1.0.6
+        uses: vsoch/pull-request-action@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           BRANCH_PREFIX: "update/"
           PULL_REQUEST_BRANCH: "master"
 ```
 
+**Important**: Make sure to use a stable [release](https://github.com/vsoch/pull-request-action/releases) instead of a branch for your workflow.
+
+
 ## Environment Variable Inputs
 
 Unlike standard actions, this action just uses variables from the environment.
@@ -36,6 +39,8 @@ Unlike standard actions, this action just uses variables from the environment.
 | Name | Description | Required | Default |
 |------|-------------|----------|---------|
 | BRANCH_PREFIX | the prefix to filter to. If the branch doesn't start with the prefix, it will be ignored | false | "" |
+| PULL_REQUEST_REPOSITORY | Choose another repository instead of default GITHUB_REPOSITORY for the PR  | false | |
+| PULL_REQUEST_TOKEN | [Personal Access Token(PAT)](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token) only if you define a different repository with PULL_REQUEST_REPOSITORY | false | |
 | PULL_REQUEST_BRANCH | open pull request against this branch | false | master |
 | PULL_REQUEST_FROM_BRANCH | if a branch isn't found in your GitHub payload, use this branch | false | |
 | PULL_REQUEST_BODY | the body for the pull request | false | |
@@ -45,10 +50,10 @@ Unlike standard actions, this action just uses variables from the environment.
 | PULL_REQUEST_ASSIGNEES | A list (string with spaces) of users to assign | false | unset |
 | PULL_REQUEST_REVIEWERS | A list (string with spaces) of users to assign review | false | unset |
 | PULL_REQUEST_TEAM_REVIEWERS | A list (string with spaces) of teams to assign review | false | unset |
-| PASS_ON_ERROR | Instead of failing on an error response, pass | unset |
-| PASS_IF_EXISTS | Instead of failing if the pull request already exists, pass | unset |
-| PULL_REQUEST_UPDATE | If the pull request already exists, update it | unset |
-| PULL_REQUEST_STATE | If `PULL_REQUEST_UPDATE` is true, update to this state (open, closed) | open |
+| PASS_ON_ERROR | Instead of failing on an error response, pass | false | unset |
+| PASS_IF_EXISTS | Instead of failing if the pull request already exists, pass | false | unset |
+| PULL_REQUEST_UPDATE | If the pull request already exists, update it | false | unset |
+| PULL_REQUEST_STATE | If `PULL_REQUEST_UPDATE` is true, update to this state (open, closed) | false |open |
 
 For `PULL_REQUEST_DRAFT`, `PASS_ON_ERROR`, `PASS_IF_EXISTS`, and `MAINTAINER_CANT_MODIFY`, these are
 treated as environment booleans. If they are defined in the environment, they trigger the
@@ -68,6 +73,8 @@ an issue or PR, they are ignored otherwise.
 The `GITHUB_TOKEN` secret is required to interact and authenticate with the GitHub API to open
 the pull request. The example is [deployed here](https://github.com/vsoch/pull-request-action-example) with an example opened (and merged) [pull request here](https://github.com/vsoch/pull-request-action-example/pull/1) if needed.
 
+If you want to create a pull request to another repository, for example, a pull request to the upstream repository, you need to define PULL_REQUEST_REPOSITORY and PULL_REQUEST_TOKEN. The PULL_REQUEST_TOKEN is one [Personal Access Token(PAT)](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token), which can be save in the [encrypted secrets](https://docs.github.com/en/actions/reference/encrypted-secrets#creating-encrypted-secrets-for-a-repository)
+
 ## Outputs
 
 The action sets a few useful output and environment variables. An output can
@@ -93,7 +100,9 @@ The screenshot below shows the example in action to interact with outputs in sev
 ## Examples
 
 Example workflows are provided in [examples](examples), and please contribute any
-examples that you might have to help other users! We will walk through a basic
+examples that you might have to help other users! You can get the same commit hashes
+and commented tags if you use the [action-updater](https://github.com/vsoch/action-updater)
+also maintained by @vsoch. We will walk through a basic
 example here for a niche case. Let's say that we are opening a pull request on the release event. This would mean
 that the payload's branch variable would be null. We would need to define `PULL_REQUEST_FROM`. How would
 we do that? We can [set environment variables](https://github.com/actions/toolkit/blob/main/docs/commands.md#environment-files) for next steps. Here is an example:
@@ -112,9 +121,9 @@ jobs:
         run: |
             # do custom parsing of your code / date to derive a branch from
             PR_BRANCH_FROM=release-v$(cat VERSION)
-            export "PULL_REQUEST_FROM_BRANCH=${PR_BRANCH_FROM}" >> $GITHUB_ENV
+            echo "PULL_REQUEST_FROM_BRANCH=${PR_BRANCH_FROM}" >> $GITHUB_ENV
       - name: pull-request-action
-        uses: vsoch/pull-request-action@1.0.6
+        uses: vsoch/pull-request-action@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           PULL_REQUEST_BRANCH: "master"

examples/assignees-example.yml

@@ -2,16 +2,16 @@ name: Pull Request on Branch Push
 on:
   push:
     branches-ignore:
-      - devel
+    - devel
 jobs:
   auto-pull-request:
     name: PullRequestAction
     runs-on: ubuntu-latest
     steps:
-      - name: pull-request-action
-        uses: vsoch/pull-request-action@1.0.3
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_PREFIX: "update/"
-          PULL_REQUEST_BRANCH: "master"
-          PULL_REQUEST_ASSIGNEES: vsoch
+    - name: pull-request-action
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH_PREFIX: update/
+        PULL_REQUEST_BRANCH: master
+        PULL_REQUEST_ASSIGNEES: vsoch

examples/branch-from-environment.yml

@@ -1,24 +1,23 @@
 name: derive-branch-from-environment
 
 on:
-  schedule:
-    # Weekly
-    - cron: 0 0 * * 0
+  schedule: -
+    cron: 0 0 * * 0
 
 jobs:
   DoSomeUpdate:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v1
+      uses: actions/checkout@v3
     - name: Install or Do Something to Change repository
       run: |
-         echo "This is a new file." >> newfile.txt
+        echo "This is a new file." >> newfile.txt
 
     - name: Checkout New Branch
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        BRANCH_AGAINST: "master"
+        BRANCH_AGAINST: master
       run: |
         printf "GitHub Actor: ${GITHUB_ACTOR}\n"
         export BRANCH_FROM="update/newfile-$(date '+%Y-%m-%d')"
@@ -43,7 +42,7 @@ jobs:
         echo "PULL_REQUEST_FROM_BRANCH=${BRANCH_FROM}" >> $GITHUB_ENV
 
     - name: Open Pull Request
-      uses: vsoch/pull-request-action@1.0.6
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        PULL_REQUEST_BRANCH: "master"
+        PULL_REQUEST_BRANCH: master

examples/custom-body-example.yml

@@ -2,8 +2,8 @@ name: Hotfix Branch Pull Request
 on:
   push:
     branches-ignore:
-      - master
-      - production
+    - master
+    - production
 
 # See https://github.com/vsoch/pull-request-action/issues/47#issuecomment-707109132
 
@@ -12,44 +12,44 @@ jobs:
     name: PullRequestAction
     runs-on: ubuntu-latest
     steps:
-      - name: Generate branch name
-        uses: actions/github-script@v3
-        id: set-branch-name
-        with:
-          script: |
-            const capitalize = (name) => name.charAt(0).toUpperCase() + name.slice(1);
-            const emoji = context.payload.ref.startsWith("refs/heads/feature")
-              ? "✨ "
-              : context.payload.ref.startsWith("refs/heads/hotfix")
-              ? "🚑 "
-              : "";
-            return `${emoji}${capitalize(
-              context.payload.ref
-                .replace("refs/heads/", "")
-                .replace(/-/g, " ")
-                .replace("feature ", "")
-                .replace("hotfix ", "")
-            )}`;
-          result-encoding: string
-      - name: Set branch name
-        run: echo "PULL_REQUEST_TITLE=${{steps.set-branch-name.outputs.result}}" >> $GITHUB_ENV
-      - name: Generate PR body
-        uses: actions/github-script@v3
-        id: set-pr-body
-        with:
-          script: |
-            return `I'm opening this pull request for this branch, pushed by @${
-              context.payload.head_commit.author.username
-            } with ${context.payload.commits.length} commit${
-              context.payload.commits.length === 1 ? "" : "s"
-            }.`;
-          result-encoding: string
-      - name: Set PR body
-        run: echo "PULL_REQUEST_BODY=${{steps.set-pr-body.outputs.result}}" >> $GITHUB_ENV
-      - name: pull-request-action
-        uses: vsoch/pull-request-action@1.0.10
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_PREFIX: "hotfix-"
-          PULL_REQUEST_BRANCH: "production"
-          PULL_REQUEST_REVIEWERS: "AnandChowdhary"
+    - name: Generate branch name
+      uses: actions/github-script@v6
+      id: set-branch-name
+      with:
+        script: |
+          const capitalize = (name) => name.charAt(0).toUpperCase() + name.slice(1);
+          const emoji = context.payload.ref.startsWith("refs/heads/feature")
+            ? "✨ "
+            : context.payload.ref.startsWith("refs/heads/hotfix")
+            ? "🚑 "
+            : "";
+          return `${emoji}${capitalize(
+            context.payload.ref
+              .replace("refs/heads/", "")
+              .replace(/-/g, " ")
+              .replace("feature ", "")
+              .replace("hotfix ", "")
+          )}`;
+        result-encoding: string
+    - name: Set branch name
+      run: echo "PULL_REQUEST_TITLE=${{steps.set-branch-name.outputs.result}}" >> $GITHUB_ENV
+    - name: Generate PR body
+      uses: actions/github-script@v6
+      id: set-pr-body
+      with:
+        script: |
+          return `I'm opening this pull request for this branch, pushed by @${
+            context.payload.head_commit.author.username
+          } with ${context.payload.commits.length} commit${
+            context.payload.commits.length === 1 ? "" : "s"
+          }.`;
+        result-encoding: string
+    - name: Set PR body
+      run: echo "PULL_REQUEST_BODY=${{steps.set-pr-body.outputs.result}}" >> $GITHUB_ENV
+    - name: pull-request-action
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH_PREFIX: hotfix-
+        PULL_REQUEST_BRANCH: production
+        PULL_REQUEST_REVIEWERS: AnandChowdhary

examples/outputs-example.yml

@@ -2,27 +2,27 @@ name: Pull Request on Branch Push
 on:
   push:
     branches-ignore:
-      - devel
+    - devel
 jobs:
   auto-pull-request:
     name: PullRequestAction
     runs-on: ubuntu-latest
     steps:
-      - name: pull-request-action
-        id: pull_request
-        uses: vsoch/pull-request-action@1.0.6
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_PREFIX: "update/"
-          PULL_REQUEST_BRANCH: "master"
-          PULL_REQUEST_REVIEWERS: vsoch
-      - name: Test outputs
-        env:
-          pull_request_number_output: ${{ steps.pull_request.outputs.pull_request_number }}
-          pull_request_url_output: ${{ steps.pull_request.outputs.pull_request_url }}
-        run: |
-          echo "Pull request number from output: ${pull_request_number_output}"
-          echo "Pull request url from output: ${pull_request_url_output}"
-          echo "Pull request number from environment: ${PULL_REQUEST_NUMBER}"
-          echo "Pull request url from environment: ${PULL_REQUEST_URL}"
-          echo "Another way to specify from output ${{ steps.pull_request.outputs.pull_request_number }}"
+    - name: pull-request-action
+      id: pull_request
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH_PREFIX: update/
+        PULL_REQUEST_BRANCH: master
+        PULL_REQUEST_REVIEWERS: vsoch
+    - name: Test outputs
+      env:
+        pull_request_number_output: ${{ steps.pull_request.outputs.pull_request_number }}
+        pull_request_url_output: ${{ steps.pull_request.outputs.pull_request_url }}
+      run: |
+        echo "Pull request number from output: ${pull_request_number_output}"
+        echo "Pull request url from output: ${pull_request_url_output}"
+        echo "Pull request number from environment: ${PULL_REQUEST_NUMBER}"
+        echo "Pull request url from environment: ${PULL_REQUEST_URL}"
+        echo "Another way to specify from output ${{ steps.pull_request.outputs.pull_request_number }}"

examples/push-example.yml

@@ -2,17 +2,17 @@ name: Pull Request on Branch Push
 on:
   push:
     branches-ignore:
-      - staging
-      - launchpad
-      - production
+    - staging
+    - launchpad
+    - production
 jobs:
   auto-pull-request:
     name: PullRequestAction
     runs-on: ubuntu-latest
     steps:
-      - name: pull-request-action
-        uses: vsoch/pull-request-action@add/support-null-branch
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_PREFIX: "update/"
-          PULL_REQUEST_BRANCH: "master"
+    - name: pull-request-action
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH_PREFIX: update/
+        PULL_REQUEST_BRANCH: master

examples/release-example.yml

@@ -1,7 +1,7 @@
 on:
   release:
     types:
-      - published
+    - published
 
 jobs:
   persist-new-suite-yml:
@@ -18,31 +18,27 @@ jobs:
         version=$(echo "$tag_name" | sed 's/^v//')
         echo "Version: $version"
 
-        echo "::set-output name=suite_version::${version}"
-        echo "::set-output name=suite_update_branch::suite_${version}"
+        echo "suite_version=${version}" >> $GITHUB_OUTPUT
+        echo "suite_update_branch=suite_${version}" >> $GITHUB_OUTPUT
       id: data
 
     - name: Permanently save the new suite release
       run: |
         mkdir -p releases
-
         new_suite_version_yml="releases/suite_${{ steps.data.outputs.suite_version }}.yml"
         echo "Suite target file: $new_suite_version_yml"
-
         cp suite.yml "${new_suite_version_yml}"
-
         git add "${new_suite_version_yml}"
         git commit -m "Suite v${{ steps.data.outputs.suite_version }} auto-commit of new release files"
 
     - name: Push files
-      run: |
-        git push --force "https://${{ github.actor }}:${{secrets.GITHUB_TOKEN}}@github.com/${{ github.repository }}.git" "HEAD:${{ steps.data.outputs.suite_update_branch }}"
+      run: git push --force "https://${{ github.actor }}:${{secrets.GITHUB_TOKEN}}@github.com/${{ github.repository }}.git" "HEAD:${{ steps.data.outputs.suite_update_branch }}"
 
     - name: Open a PR to the default branch
-      uses: vsoch/pull-request-action@1.0.2
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        PULL_REQUEST_FROM_BRANCH: "${{ steps.data.outputs.suite_update_branch }}"
+        PULL_REQUEST_FROM_BRANCH: ${{ steps.data.outputs.suite_update_branch }}
         PULL_REQUEST_BRANCH: master
-        PULL_REQUEST_TITLE: "Action: Update suite release file for v${{ steps.data.outputs.suite_version }}"
-        PULL_REQUEST_BODY: "Auto-generated PR!"
+        PULL_REQUEST_TITLE: 'Action: Update suite release file for v${{ steps.data.outputs.suite_version }}'
+        PULL_REQUEST_BODY: Auto-generated PR!

examples/reviewers-example.yml

@@ -2,16 +2,16 @@ name: Pull Request on Branch Push
 on:
   push:
     branches-ignore:
-      - devel
+    - devel
 jobs:
   auto-pull-request:
     name: PullRequestAction
     runs-on: ubuntu-latest
     steps:
-      - name: pull-request-action
-        uses: vsoch/pull-request-action@1.0.4
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH_PREFIX: "update/"
-          PULL_REQUEST_BRANCH: "master"
-          PULL_REQUEST_REVIEWERS: vsoch
+    - name: pull-request-action
+      uses: vsoch/pull-request-action@d703f40f3af5ae294f9816395ddf2e3d2d3feafa # 1.0.21
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        BRANCH_PREFIX: update/
+        PULL_REQUEST_BRANCH: master
+        PULL_REQUEST_REVIEWERS: vsoch

pull-request.py

@@ -69,17 +69,22 @@ def parse_into_list(values):
     return [x.strip() for x in values.split(" ")]
 
 
-def set_env(name, value):
+def set_env_and_output(name, value):
     """helper function to echo a key/value pair to the environement file
 
     Parameters:
     name (str)  : the name of the environment variable
     value (str) : the value to write to file
     """
-    environment_file_path = os.environ.get("GITHUB_ENV")
+    for env_var in ("GITHUB_ENV", "GITHUB_OUTPUT"):
+        environment_file_path = os.environ.get(env_var)
+        if not environment_file_path:
+            print(f"Warning: {env_var} is unset, skipping.")
+            continue
+        print("Writing %s=%s to %s" % (name, value, env_var))
 
-    with open(environment_file_path, "a") as environment_file:
-        environment_file.write("%s=%s" % (name, value))
+        with open(environment_file_path, "a") as environment_file:
+            environment_file.write("%s=%s\n" % (name, value))
 
 
 def open_pull_request(title, body, target, source, is_draft=False, can_modify=True):
@@ -108,6 +113,7 @@ def open_pull_request(title, body, target, source, is_draft=False, can_modify=Tr
     print("Data for opening pull request: %s" % data)
     response = requests.post(PULLS_URL, json=data, headers=HEADERS)
     if response.status_code != 201:
+        print(f"pull request url is {PULLS_URL}")
         abort_if_fail(response, "Unable to create pull request")
 
     return response
@@ -158,12 +164,9 @@ def set_pull_request_groups(response):
     number = response.get("number")
     html_url = response.get("html_url")
     print("Number opened for PR is %s" % number)
-    set_env("PULL_REQUEST_NUMBER", number)
-    print("::set-output name=pull_request_number::%s" % number)
-    set_env("PULL_REQUEST_RETURN_CODE", pull_request_return_code)
-    print("::set-output name=pull_request_return_code::%s" % pull_request_return_code)
-    set_env("PULL_REQUEST_URL", html_url)
-    print("::set-output name=pull_request_url::%s" % html_url)
+    set_env_and_output("PULL_REQUEST_NUMBER", number)
+    set_env_and_output("PULL_REQUEST_RETURN_CODE", pull_request_return_code)
+    set_env_and_output("PULL_REQUEST_URL", html_url)
 
 
 def list_pull_requests(target, source):
@@ -179,8 +182,8 @@ def list_pull_requests(target, source):
     print("Params for checking if pull request exists: %s" % params)
     response = requests.get(PULLS_URL, params=params)
 
-    # Case 1: 404 might warrant needing a token
-    if response.status_code == 404:
+    # Case 1: 401, 404 might warrant needing a token
+    if response.status_code in [401, 404]:
         response = requests.get(PULLS_URL, params=params, headers=HEADERS)
     if response.status_code != 200:
         abort_if_fail(response, "Unable to retrieve information about pull requests")
@@ -214,8 +217,7 @@ def add_assignees(entry, assignees):
     print("::group::github assignees response")
     print(response.json())
     print("::endgroup::github assignees response")
-    set_env("ASSIGNEES_RETURN_CODE", assignees_return_code)
-    print("::set-output name=assignees_return_code::%s" % assignees_return_code)
+    set_env_and_output("ASSIGNEES_RETURN_CODE", assignees_return_code)
 
 
 def find_pull_request(listing, source):
@@ -233,6 +235,21 @@ def find_pull_request(listing, source):
                 return entry
 
 
+def find_default_branch():
+    """Find default branch for a repo (only called if branch not provided)"""
+    response = requests.get(REPO_URL)
+
+    # Case 1: 401, 404 might need a token
+    if response.status_code in [401, 404]:
+        response = requests.get(REPO_URL, headers=HEADERS)
+    if response.status_code != 200:
+        abort_if_fail(response, "Unable to retrieve default branch")
+
+    default_branch = response.json()["default_branch"]
+    print("Found default branch: %s" % default_branch)
+    return default_branch
+
+
 def add_reviewers(entry, reviewers, team_reviewers):
     """Given regular or team reviewers, add them to a PR.
 
@@ -256,9 +273,7 @@ def add_reviewers(entry, reviewers, team_reviewers):
     print("::group::github reviewers response")
     print(response.json())
     print("::endgroup::github reviewers response")
-    set_env("REVIEWERS_RETURN_CODE", reviewers_return_code)
-    print("::set-output name=reviewers_return_code::%s" % reviewers_return_code)
-    print("Add reviewers return code: %s" % reviewers_return_code)
+    set_env_and_output("REVIEWERS_RETURN_CODE", reviewers_return_code)
 
 
 ################################################################################
@@ -266,16 +281,21 @@ def add_reviewers(entry, reviewers, team_reviewers):
 ################################################################################
 
 API_VERSION = "v3"
-BASE = "https://api.github.com"
+
+# Allow for a GitHub enterprise URL
+BASE = os.environ.get("GITHUB_API_URL") or "https://api.github.com"
+
+PR_TOKEN = os.environ.get("PULL_REQUEST_TOKEN") or get_envar("GITHUB_TOKEN")
+PR_REPO = os.environ.get("PULL_REQUEST_REPOSITORY") or get_envar("GITHUB_REPOSITORY")
 
 HEADERS = {
-    "Authorization": "token %s" % get_envar("GITHUB_TOKEN"),
+    "Authorization": "token %s" % PR_TOKEN,
     "Accept": "application/vnd.github.%s+json;application/vnd.github.antiope-preview+json;application/vnd.github.shadow-cat-preview+json"
     % API_VERSION,
 }
 
 # URLs
-REPO_URL = "%s/repos/%s" % (BASE, get_envar("GITHUB_REPOSITORY"))
+REPO_URL = "%s/repos/%s" % (BASE, PR_REPO)
 ISSUE_URL = "%s/issues" % REPO_URL
 PULLS_URL = "%s/pulls" % REPO_URL
 
@@ -339,8 +359,11 @@ def main():
     if not branch_prefix:
         print("No branch prefix is set, all branches will be used.")
 
-    # Default to master to support older, will eventually change to main
-    pull_request_branch = os.environ.get("PULL_REQUEST_BRANCH", "master")
+    # Default to project default branch if none provided
+    pull_request_branch = os.environ.get("PULL_REQUEST_BRANCH")
+    if not pull_request_branch:
+        pull_request_branch = find_default_branch()
+
     print("Pull requests will go to %s" % pull_request_branch)
 
     # Pull request draft
@@ -394,7 +417,7 @@ def main():
     if not from_branch:
         print("PULL_REQUEST_FROM_BRANCH is not set, checking branch in payload.")
         with open(check_events_json(), "r") as fd:
-            from_branch = json.loads(fd.read()).get("ref")
+            from_branch = json.loads(fd.read()).get("ref", "")
         from_branch = from_branch.replace("refs/heads/", "").strip("/")
     else:
         print("PULL_REQUEST_FROM_BRANCH is set.")