Convert dcm alias to script

Enhance possibilities of dcm command for handy using
* define new commnads
* dump services
* services order startup

bin/dcm

@@ -0,0 +1,116 @@
+#!/usr/bin/env python3
+
+"""
+pulsar
+# wait-for-pulsar <check-delay> <max-duration>
+pulsar-create-namespace 
+# wait-for-pulsar-create-namespace - wanted return code 0
+postgres redis jaeger router
+# wait-for-postgres
+
+# jeste poresit fazovani
+metadata-api-new aqe afm-exec-api result-cache scan-model sql-executor swagger-ui
+"""
+
+import subprocess
+import yaml
+import pprint
+import os
+import re
+from sys import argv
+from time import time, sleep
+
+
+def split(text):
+    return re.split(r'\s+', text)
+
+
+def prefix_join(prefix, array):
+    return " ".join([prefix + " " + item for item in array])
+
+
+def dc_files(files):
+    return prefix_join("-f", files)
+
+
+def load_dc_file(dc_file):
+    with open(dc_file) as yamlFile:
+        dc = yaml.load(yamlFile, Loader=yaml.FullLoader)
+    return dc
+
+
+def dc_services(dc_file):
+    dc = load_dc_file(dc_file)
+    return [service for service in dc["services"].keys()]
+
+
+def dump_services(files):
+    for filename in files:
+        for service in dc_services(filename):
+            print(service)
+
+
+def dump_files(files):
+    for file in files:
+        print(file)
+
+
+def check_pulsar():
+    return False
+
+
+def check_postgres():
+    return False
+
+
+def wait_for(check, delay, duration):
+    start = time()
+    while time() - start < duration:
+        if check():
+            return True
+    else:
+        sleep(delay)
+
+
+def try_load_list(name, default):
+    if name in os.environ:
+        return split(os.environ[name])
+    else:
+        return default
+
+
+DCF = ["docker-compose.yaml", "docker-compose-monitoring.yaml"]
+DCF = try_load_list("DCF", DCF)
+
+TIGER_SERVICES = [
+    "afm-exec-api",
+    "metadata-api-new",
+    "aqe",
+    "result-cache",
+    "scan-model",
+    "sql-executor"
+]
+TIGER_SERVICES = try_load_list("SERVICES", TIGER_SERVICES)
+
+COMMANDS = {
+    "files": lambda: dump_files(DCF),
+    "services": lambda: dump_services(DCF)
+    # deps - vypis zavyslosti
+    # logs - aby se nemuselo zadavat tolik argumentu
+}
+
+
+def main():
+    args = " ".join(argv[1:])    
+    cmd = " ".join(["docker-compose", dc_files(DCF), args])
+    print(cmd)
+    returned_value = subprocess.call(cmd, shell=True)
+    exit(returned_value)
+
+
+if __name__ == '__main__':    
+    action = argv[1] if len(argv) > 1 else None
+    if action in COMMANDS:
+        COMMANDS[action]()
+    else:
+        main()