chore: migrate to main branch

.github/workflows/django_tests_against_emulator0.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests0
 jobs:

.github/workflows/django_tests_against_emulator1.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests1
 jobs:

.github/workflows/django_tests_against_emulator2.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests2
 jobs:

.github/workflows/django_tests_against_emulator3.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests3
 jobs:

.github/workflows/django_tests_against_emulator4.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests4
 jobs:

.github/workflows/django_tests_against_emulator5.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests5
 jobs:

.github/workflows/django_tests_against_emulator6.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests6
 jobs:

.github/workflows/django_tests_against_emulator7.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests7
 jobs:

.github/workflows/django_tests_against_emulator8.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests8
 jobs:

.github/workflows/django_tests_against_emulator9.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: django-tests9
 jobs:

.github/workflows/integration-tests-against-emulator.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 name: Run Django Spanner integration tests against emulator
 jobs:

.kokoro/test-samples-impl.sh

@@ -72,7 +72,7 @@ for file in samples/**/requirements.txt; do
     EXIT=$?
 
     # If this is a periodic build, send the test log to the FlakyBot.
-    # See https://github.com/googleapis/repo-automation-bots/tree/master/packages/flakybot.
+    # See https://github.com/googleapis/repo-automation-bots/tree/main/packages/flakybot.
     if [[ $KOKORO_BUILD_ARTIFACTS_SUBDIR = *"periodic"* ]]; then
       chmod +x $KOKORO_GFILE_DIR/linux_amd64/flakybot
       $KOKORO_GFILE_DIR/linux_amd64/flakybot

README.rst

@@ -220,13 +220,13 @@ How it works
 Overall design
 ~~~~~~~~~~~~~~
 
-.. figure:: https://raw.githubusercontent.com/googleapis/python-spanner-django/master/assets/overview.png
+.. figure:: https://raw.githubusercontent.com/googleapis/python-spanner-django/main/assets/overview.png
    :alt: "Overall Design"
 
 Internals
 ~~~~~~~~~
 
-.. figure:: https://raw.githubusercontent.com/googleapis/python-spanner-django/master/assets/internals.png
+.. figure:: https://raw.githubusercontent.com/googleapis/python-spanner-django/main/assets/internals.png
    :alt: "Internals"
 
 
@@ -247,11 +247,11 @@ HOW TO CONTRIBUTE
 
 Contributions to this library are always welcome and highly encouraged.
 
-See `CONTRIBUTING <https://github.com/googleapis/python-spanner-django/blob/master/CONTRIBUTING.md>`_ for more information on how to get started.
+See `CONTRIBUTING <https://github.com/googleapis/python-spanner-django/blob/main/CONTRIBUTING.md>`_ for more information on how to get started.
 
 Please note that this project is released with a Contributor Code of Conduct.
 By participating in this project you agree to abide by its terms. See the `Code 
-of Conduct <https://github.com/googleapis/python-spanner-django/blob/master/CODE_OF_CONDUCT.md>`_ for more information.
+of Conduct <https://github.com/googleapis/python-spanner-django/blob/main/CODE_OF_CONDUCT.md>`_ for more information.
 
 Current limitations
 -------------------

owlbot.py

@@ -40,3 +40,32 @@
 )
 
 s.shell.run(["nox", "-s", "blacken"], hide_output=False)
+
+# ----------------------------------------------------------------------------
+# Main Branch migration
+# ----------------------------------------------------------------------------
+
+s.replace(
+  "*.rst",
+  "master",
+  "main"
+)
+
+s.replace(
+  "*.rst",
+  "google-cloud-python/blob/main",
+  "google-cloud-python/blob/master"
+)
+
+s.replace(
+  "CONTRIBUTING.rst",
+  "kubernetes/community/blob/main",
+  "kubernetes/community/blob/master"
+)
+
+s.replace(
+  ".kokoro/*",
+  "master",
+  "main"
+)
+