1 files changed, 38 insertions, 0 deletions
diff --git a/contrib/docker/start.py b/contrib/docker/start.py
new file mode 100755
index 0000000000..7057f85f61
--- /dev/null
+++ b/contrib/docker/start.py
@@ -0,0 +1,38 @@
+#!/usr/local/bin/python
+
+import jinja2
+import os
+import sys
+import subprocess
+
+convert = lambda src, dst, environ: open(dst, "w").write(jinja2.Template(open(src).read()).render(**environ))
+mode = sys.argv[1] if len(sys.argv) > 1 else None
+environ = os.environ.copy()
+
+if "SYNAPSE_SERVER_NAME" not in environ:
+    print("Environment variable SYNAPSE_SERVER_NAME is mandatory, exiting.")
+    sys.exit(2)
+
+args = ["python", "-m", "synapse.app.homeserver",
+        "--server-name", os.environ.get("SYNAPSE_SERVER_NAME"),
+        "--report-stats", os.environ.get("SYNAPSE_REPORT_STATS", "no"),
+        "--config-path", os.environ.get("SYNAPSE_CONFIG_PATH", "/compiled/homeserver.yaml")]
+
+# Generate any missing shared secret
+for secret in ("SYNAPSE_REGISTRATION_SHARED_SECRET", "SYNAPSE_MACAROON_SECRET_KEY"):
+    if secret not in environ:
+        print("Generating a random secret for {}".format(secret))
+        environ[secret] = os.urandom(32).encode("hex")
+
+# Parse the configuration file
+if not os.path.exists("/compiled"): os.mkdir("/compiled")
+convert("/conf/homeserver.yaml", "/compiled/homeserver.yaml", environ)
+convert("/conf/log.config", "/compiled/%s.log.config" % environ.get("SYNAPSE_SERVER_NAME"), environ)
+
+# In generate mode, generate a configuration, missing keys, then exit
+if mode == "generate":
+    os.execv("/usr/local/bin/python", args + ["--generate-config"])
+# In normal mode, generate missing keys if any, then run synapse
+else:
+    subprocess.check_output(args + ["--generate-keys"])
+    os.execv("/usr/local/bin/python", args)