log_helper improvements.
- Move some arguments to config file
- add possibility to install tool from setup.py file
- run the tool as script (without python statement)

Related-prod: PRODX-32778

Change-Id: Ibc1ef0a75f8ea04b017e1362f24b5b06b78a09eb
diff --git a/log_helper/log_helper.py b/log_helper/log_helper.py
old mode 100644
new mode 100755
index 86a324a..48190c2
--- a/log_helper/log_helper.py
+++ b/log_helper/log_helper.py
@@ -1,62 +1,68 @@
+#!/usr/bin/env python3
+
 import subprocess
 import sys
 import os
 import yaml
 from os import path
+import config
 
-try:
-    param_is_yaml = path.isfile(sys.argv[2])
-except IndexError:
-    print('Second argument <tempest-report-yaml>/<resource-ID> is not provided')
-    raise ValueError('ASecond argument <tempest-report-yaml>/<resource-ID> is not provided')
+
+param_is_yaml = False
+
+if len(sys.argv) == 1:
+    param_is_yaml = path.isfile(config.TEMPEST_REPORT_YAML)
+    if param_is_yaml is False:
+        print('TEMPEST_REPORT_YAML config parameter is not a file')
+        raise Exception('TEMPEST_REPORT_YAML config parameter is not a file')
 
 
 def log_gather(resource_id, sub_resource, log_level=None):
-    """ Get all log lines related to resource-id with error
+    """ Get all log lines related to resource-id
        :param resource_id: ID resource, e.g. request-id, server-id
        :param sub_resource: name of sub_resource log file, e.g subnet.log for neutron resource
-       :param log_level: substring for resource_id log: e.g. get only ERROR log level, optional
+       :param log_level: substring for resource_id log: e.g. get only ERROR log level messages, optional
        """
     try:
-        directory = os.walk(sys.argv[1])
+        directory = os.walk(config.LOG_DIR)
     except IndexError:
-        print('Argument <folder-with-logs> is not provided')
-        raise ValueError('Argument <folder-with-logs> is not provided')
+        print('Parameter <LOG_DIR> is not provided')
+        raise ValueError('Parameter <LOG_DIR> is not provided')
 
     if param_is_yaml:
         for dirs in directory:
-            run_cmd = f"grep -a {resource_id} {dirs[0]}/* >> {sub_resource}"
+            run_cmd = f"grep -a {resource_id} {dirs[0]}/* >> {config.RESULTS_DIR}/{sub_resource}"
             subprocess.run(run_cmd, shell=True)
 
     else:
         for dirs in directory:
             if log_level:
-                run_cmd = f"grep -lE '{resource_id}.*{log_level}|{log_level}.*{resource_id}' {dirs[0]}/* >> 'tmp.log'"
+                run_cmd = f"grep -lE '{resource_id}.*{log_level}|{log_level}.*{resource_id}' {dirs[0]}/* >> '{config.RESULTS_DIR}/tmp.log'"
             else:
-                run_cmd = f"grep -l {resource_id} {dirs[0]}/* >> 'tmp.log'"
+                run_cmd = f"grep -l {resource_id} {dirs[0]}/* >> '{config.RESULTS_DIR}/tmp.log'"
             subprocess.run(run_cmd, shell=True)
 
-        with open('tmp.log') as f:
+        with open(config.RESULTS_DIR + '/tmp.log') as f:
             files = f.readlines()
 
         for file in files:
             subd = file.split("/")
             log_dir = subd[-4] + "." + subd[-3] + "." + subd[-2]
             log_name = subd[-1].replace('\n', '')
-            os.makedirs(os.path.join(sys.argv[2], log_dir), exist_ok=True)
-            path = os.path.join(sys.argv[2], log_dir, log_name)
+            os.makedirs(os.path.join(config.RESULTS_DIR, sys.argv[1], log_dir), exist_ok=True)
+            path = os.path.join(config.RESULTS_DIR, sys.argv[1], log_dir, log_name)
             if log_level:
                 run_cmd = f"grep -aE '{resource_id}.*{log_level}|{log_level}.*{resource_id}' {file} >> {path}"
             else:
                 run_cmd = f"grep -a {resource_id} {file} >> {path}"
             subprocess.run(run_cmd.replace('\n', ''), shell=True)
 
-        os.remove('tmp.log')
+        os.remove(config.RESULTS_DIR + '/tmp.log')
 
 
 if param_is_yaml:
     print('Find all the failed tempest tests from YAML file')
-    with open(sys.argv[2]) as f:
+    with open(config.TEMPEST_REPORT_YAML) as f:
         test_resources = yaml.safe_load(f)
 
     for test in test_resources.items():
@@ -64,20 +70,19 @@
         # related resources in corresponded folders
         if test[1]['status'] == 'failure':
             print('Collecting logs for ' + test[0])
-            os.makedirs(test[0], exist_ok=True)
+            os.makedirs(os.path.join(config.RESULTS_DIR, test[0]), exist_ok=True)
             for resource in test[1]['resources']:
-                os.makedirs(os.path.join(test[0], resource), exist_ok=True)
+                os.makedirs(os.path.join(config.RESULTS_DIR, test[0], resource), exist_ok=True)
                 for sub_resource in test[1]['resources'][resource]:
                     log_gather(list(test[1]['resources'][resource][sub_resource])[0],
                                os.path.join(test[0], resource, sub_resource + '.' + 'log'))
 
 else:
     print('Find all the related log for one specific test or id with error')
-    os.makedirs(sys.argv[2], exist_ok=True)
-    if len(sys.argv) == 4:
-        log_gather(sys.argv[2], os.path.join(sys.argv[2], 'test' + '.' + 'log'), log_level=sys.argv[3])
+    os.makedirs(os.path.join(config.RESULTS_DIR, sys.argv[1]), exist_ok=True)
+    if len(sys.argv) == 3:
+        log_gather(sys.argv[1], os.path.join(sys.argv[1], 'test' + '.' + 'log'), log_level=sys.argv[2])
     else:
-        log_gather(sys.argv[2], os.path.join(sys.argv[2], 'test' + '.' + 'log'))
+        log_gather(sys.argv[1], os.path.join(sys.argv[1], 'test' + '.' + 'log'))
 
 print('The logger is finished')
-