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-rw-r--r--vnfs/DAaaS/lib/promql_api/prom_ql_api.py82
1 files changed, 82 insertions, 0 deletions
diff --git a/vnfs/DAaaS/lib/promql_api/prom_ql_api.py b/vnfs/DAaaS/lib/promql_api/prom_ql_api.py
new file mode 100644
index 00000000..970d2416
--- /dev/null
+++ b/vnfs/DAaaS/lib/promql_api/prom_ql_api.py
@@ -0,0 +1,82 @@
+from __future__ import print_function
+from os import environ
+import logging
+import requests
+from requests.exceptions import HTTPError
+
+
+
+API_VERSION = '/api/v1/query'
+LIST_OF_ENV_VARIABLES = ["DATA_ENDPOINT"]
+MAP_ENV_VARIABLES = dict()
+LOG = logging.getLogger(__name__)
+
+def set_log_config():
+ logging.basicConfig(format='%(asctime)s ::%(filename)s :: %(funcName)s :: %(levelname)s :: %(message)s',
+ datefmt='%m-%d-%Y %I:%M:%S%p',
+ level=logging.DEBUG,
+ filename='promql_api.log',
+ filemode='w')
+ LOG.info("Set the log configs.")
+
+
+def load_and_validate_env_vars(list_of_env_vars):
+ LOG.info("Loading the env variables ...")
+ for env_var in list_of_env_vars:
+ if env_var in environ:
+ LOG.info("Found env variable: {} ".format(env_var.upper()))
+ MAP_ENV_VARIABLES[env_var.upper()] = environ.get(env_var)
+ else:
+ #MAP_ENV_VARIABLES['DATA_ENDPOINT']='http://127.0.0.1:30090' # to be deleted
+ LOG.error("Env var: {} not found ! ".format(env_var.upper()))
+ raise KeyError("Env variable: {} not found ! ".format(env_var.upper()))
+
+
+def query(LABELS):
+ """
+ Input parameters:
+ LABELS : a list of the LABELS like ['irate(collectd_cpufreq{exported_instance="otconap7",cpufreq="1"}[2m])']
+ Return:
+ returns a list of result sets of different labels.
+ SAMPLE O/P:
+ [{'metric': {'cpufreq': '1',
+ 'endpoint': 'collectd-prometheus',
+ 'exported_instance': 'otconap7',
+ 'instance': '172.25.103.1:9103',
+ 'job': 'collectd',
+ 'namespace': 'edge1',
+ 'pod': 'plundering-liger-collectd-wz7xg',
+ 'service': 'collectd'},
+ 'value': [1559177169.415, '119727200']}]
+ """
+ set_log_config()
+ load_and_validate_env_vars(LIST_OF_ENV_VARIABLES)
+ LOG.info("Forming the get request ...")
+ list_of_substrings = []
+ params_map = {}
+ list_of_result_sets = []
+ list_of_substrings.append(MAP_ENV_VARIABLES['DATA_ENDPOINT'])
+ list_of_substrings.append(API_VERSION)
+ url = ''.join(list_of_substrings)
+
+ for each_label in LABELS:
+ params_map['query'] = each_label
+ try:
+ LOG.info('API request::: URL: {} '.format(url))
+ LOG.info('API request::: params: {} '.format(params_map))
+ response = requests.get(url, params=params_map)
+ response.raise_for_status()
+ except HTTPError as http_err:
+ print(f'HTTP error occurred: {http_err}')
+ return None
+ except Exception as err:
+ print(f'Other error occurred: {err}')
+ return None
+ else:
+
+ results = response.json()['data']['result']
+ LOG.info('::::::::::RESULTS::::::::::::: {}'.format(each_label))
+ for each_result in results:
+ LOG.info(each_result)
+ list_of_result_sets.append(results)
+ return list_of_result_sets