Make the index format string configurable in the conf file.

This allows query to work against indices not named the
typical "logstash-%Y.%m.%d".

Change-Id: I89a5b293b8e23cc81a8ed33d86c173adca927d28

elasticRecheck.conf.sample

@@ -16,3 +16,4 @@ key=/home/mtreinish/.ssh/id_rsa
 es_url=http://logstash.openstack.org:80/elasticsearch
 ls_url=http://logstash.openstack.org
 db_uri=mysql+pymysql://query:query@logstash.openstack.org/subunit2sql
+index_format=logstash-%Y.%m.%d

elastic_recheck/cmd/query.py

@@ -26,6 +26,7 @@ import elastic_recheck.results as er_results
 
 LOG = logging.getLogger('erquery')
 
+DEFAULT_INDEX_FORMAT = 'logstash-%Y.%m.%d'
 DEFAULT_NUMBER_OF_DAYS = 10
 DEFAULT_MAX_QUANTITY = 5
 IGNORED_ATTRIBUTES = [
@@ -64,9 +65,10 @@ def analyze_attributes(attributes):
 
 
 def query(query_file_name, days=DEFAULT_NUMBER_OF_DAYS, es_url=er.ES_URL,
-          quantity=DEFAULT_MAX_QUANTITY, verbose=False):
+          quantity=DEFAULT_MAX_QUANTITY, verbose=False,
+          indexfmt=DEFAULT_INDEX_FORMAT):
 
-    es = er_results.SearchEngine(es_url)
+    es = er_results.SearchEngine(url=es_url, indexfmt=indexfmt)
 
     with open(query_file_name) as f:
         query_file = yaml.load(f.read())
@@ -119,15 +121,19 @@ def main():
 
     # Start with defaults
     es_url = er.ES_URL
+    es_index_format = DEFAULT_INDEX_FORMAT
 
     if args.conf:
-        config = ConfigParser.ConfigParser({'es_url': er.ES_URL})
+        config = ConfigParser.ConfigParser({
+            'es_url': er.ES_URL,
+            'index_format': DEFAULT_INDEX_FORMAT})
         config.read(args.conf)
         if config.has_section('data_source'):
             es_url = config.get('data_source', 'es_url')
+            es_index_format = config.get('data_source', 'index_format')
 
     query(args.query_file.name, days=args.days, quantity=args.quantity,
-          verbose=args.verbose, es_url=es_url)
+          verbose=args.verbose, es_url=es_url, indexfmt=es_index_format)
 
 
 if __name__ == "__main__":

elastic_recheck/results.py

@@ -29,8 +29,9 @@ pp = pprint.PrettyPrinter()
 
 class SearchEngine(object):
     """Wrapper for pyelasticsearch so that it returns result sets."""
-    def __init__(self, url):
+    def __init__(self, url, indexfmt='logstash-%Y.%m.%d'):
         self._url = url
+        self._indexfmt = indexfmt
 
     def search(self, query, size=1000, recent=False, days=0):
         """Search an elasticsearch server.
@@ -56,7 +57,7 @@ class SearchEngine(object):
         args = {'size': size}
         if recent or days:
             # today's index
-            datefmt = 'logstash-%Y.%m.%d'
+            datefmt = self._indexfmt
             now = datetime.datetime.utcnow()
             indexes = [now.strftime(datefmt)]
             if recent: