Restore Docker Script (#445)

Author: kraftp

dbos/_templates/dbos-db-starter/start_postgres_docker.py

@@ -0,0 +1,67 @@
+import os
+import subprocess
+import sys
+import time
+
+# Default PostgreSQL port
+port = "5432"
+
+# Set the host PostgreSQL port with the -p/--port flag
+for i, arg in enumerate(sys.argv):
+    if arg in ["-p", "--port"]:
+        if i + 1 < len(sys.argv):
+            port = sys.argv[i + 1]
+
+if "PGPASSWORD" not in os.environ:
+    print("Error: PGPASSWORD is not set.")
+    sys.exit(1)
+
+try:
+    subprocess.run(
+        [
+            "docker",
+            "run",
+            "--rm",
+            "--name=dbos-db",
+            f'--env=POSTGRES_PASSWORD={os.environ["PGPASSWORD"]}',
+            "--env=PGDATA=/var/lib/postgresql/data",
+            "--volume=/var/lib/postgresql/data",
+            "-p",
+            f"{port}:5432",
+            "-d",
+            "pgvector/pgvector:pg16",
+        ],
+        check=True,
+    )
+
+    print("Waiting for PostgreSQL to start...")
+    attempts = 30
+
+    while attempts > 0:
+        try:
+            subprocess.run(
+                [
+                    "docker",
+                    "exec",
+                    "dbos-db",
+                    "psql",
+                    "-U",
+                    "postgres",
+                    "-c",
+                    "SELECT 1;",
+                ],
+                check=True,
+                capture_output=True,
+            )
+            print("PostgreSQL started!")
+            print("Database started successfully!")
+            break
+        except subprocess.CalledProcessError:
+            attempts -= 1
+            time.sleep(1)
+
+    if attempts == 0:
+        print("Failed to start PostgreSQL.")
+
+except subprocess.CalledProcessError as error:
+    print(f"Error starting PostgreSQL in Docker: {error}")