[ADD] gcp_json2log: add script to convert google cloud platform json …

…log in postgresql.log

Method 'get_psql_log_from_gcp_json' needs a full path with name file and it'll generate a postgresql.log file

gcp_json2log.py

@@ -0,0 +1,24 @@
+"""
+Convert Google Cloud Platform log in json to postgresql log
+"""
+import ijson
+import os
+
+
+def get_psql_log_from_gcp_json(gcp_json_file):
+    """
+    ijson is a module that will work with JSON as a stream.
+    Here doc: https://pypi.org/project/ijson/#lower-level-interfaces
+    Check if value is textPayload, because next item is textPayload value
+    gcp_json_file: full path of json log
+    """
+
+    is_textpayload = False
+    with open(gcp_json_file) as fjson, open("postgresql.log", "a") as log:
+        for prefix, the_type, value in ijson.parse(fjson):
+            if is_textpayload:
+                log.write("%s\n" % value)
+                is_textpayload = False
+
+            if value == "textPayload":
+                is_textpayload = True