add CI test checking the migration names

.github/workflows/maven.yml

@@ -16,6 +16,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+    - name: check migration names
+      run: cd docker-compose/database && ./check_migration_names.py
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:

docker-compose/database/check_migration_names.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python3
+#
+# this script ensures that all new migrations in the current branch have a
+# filename that is greater than all existing migrations in the release branch
+#
+
+
+RELEASE_BRANCH="origin/master"
+
+import pathlib
+import subprocess
+import sys
+
+subprocess.call(["git", "remote", "-v"])
+
+errors = 0
+for path in pathlib.Path("db-changes").glob("*"):
+    if path.is_dir():
+        db = path.name
+        print(f"{30*'#'} {db} {45*'#'}"[:79])
+
+        # get the existing migrations from the RELEASE_BRANCH
+        proc = subprocess.run(["git", "ls-tree", f"{RELEASE_BRANCH}/develop:db-changes/{db}"],
+                encoding="utf-8", capture_output=True, errors="replace")
+        if proc.returncode == 0:
+            released_migrations = set(line.split("\t", 1)[1] for line in proc.stdout.splitlines())
+
+        elif "Not a valid object name" in proc.stderr:
+            released_migrations = []
+            latest_migration = ""
+        else:
+            sys.stderr.write(proc.stderr)
+            proc.check_returncode()
+            raise # not reachable
+
+        latest_migration = max(released_migrations, default="")
+        print(f"\nlatest migration in {RELEASE_BRANCH}: {latest_migration or '(none)'}\n")
+
+        for migration in sorted(path.glob("*.sql")):
+            if migration.name not in released_migrations:
+                if migration.name > latest_migration:
+                    status = "ok"
+                else:
+                    status = "FAIL"
+                    errors += 1
+                print("%-74s %4s" % (migration, status))
+
+        print()
+
+print("#"*79)
+if errors:
+    print(f"{errors} errors (migrations must be ordered after all migrations in {RELEASE_BRANCH})")
+    sys.exit(1)
+else:
+    print ("success")