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authorRajamohan Raj <rajamohan.raj@intel.com>2019-05-30 01:28:55 +0000
committerRajamohan Raj <rajamohan.raj@intel.com>2019-05-30 01:28:55 +0000
commitf3c04d861a585c9ae9138ea1e93aae24deeb46bf (patch)
tree21004ad707b73e4f0040cb7b41f4cf8862be47c2
parent02331f878f0bdf256f5b41f2f3433f2ff1db6bc4 (diff)
PromQL api for query
Initial commit for promQL query api and sample app for using the api Change-Id: Id9c5d95f621edbb14b2eba7493c968c138d2d02a Issue-ID: ONAPARC-452 Signed-off-by: Rajamohan Raj <rajamohan.raj@intel.com>
-rw-r--r--vnfs/DAaaS/applications/m3db_promql/promql_api/README.md50
-rw-r--r--vnfs/DAaaS/applications/m3db_promql/promql_api/__init__.py0
-rw-r--r--vnfs/DAaaS/applications/m3db_promql/promql_api/prom_ql_api.py83
-rw-r--r--vnfs/DAaaS/applications/m3db_promql/sample_promql_query.py12
4 files changed, 145 insertions, 0 deletions
diff --git a/vnfs/DAaaS/applications/m3db_promql/promql_api/README.md b/vnfs/DAaaS/applications/m3db_promql/promql_api/README.md
new file mode 100644
index 00000000..4493af22
--- /dev/null
+++ b/vnfs/DAaaS/applications/m3db_promql/promql_api/README.md
@@ -0,0 +1,50 @@
+## What does this API do ?
+This api as of now provides a function which takes in a lits of 'LABELS' of prometheus
+and returns the corresponding result_sets in a list.
+
+For eg:
+If the labels is
+
+```
+LABELS = ['irate(collectd_cpufreq{exported_instance="otconap7",cpufreq="1"}[2m])']
+```
+
+The return is:
+
+```
+[{'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']}]
+```
+
+## How to use this API ?
+
+```
+1. Copy the directory 'promql_api' to your working directory.
+```
+
+```
+2. Import the API function: query_m3db
+from promql_api.prom_ql_api import query_m3db
+```
+
+```
+3. have a global or local variable as 'LABELS'
+LABELS = ['irate(collectd_cpufreq{exported_instance="otconap7",cpufreq="1"}[2m])']
+```
+
+```
+4. Store the result set in a list:
+list_of_result_sets = query_m3db(LABELS)
+```
+
+## How to troubleshoot ?
+
+* Check the sample file - sample_promql_query.py in the repo.
+* Make sure the file __init__.py is present in promql_api directory after you copy the directory.
diff --git a/vnfs/DAaaS/applications/m3db_promql/promql_api/__init__.py b/vnfs/DAaaS/applications/m3db_promql/promql_api/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/vnfs/DAaaS/applications/m3db_promql/promql_api/__init__.py
diff --git a/vnfs/DAaaS/applications/m3db_promql/promql_api/prom_ql_api.py b/vnfs/DAaaS/applications/m3db_promql/promql_api/prom_ql_api.py
new file mode 100644
index 00000000..2bc102c4
--- /dev/null
+++ b/vnfs/DAaaS/applications/m3db_promql/promql_api/prom_ql_api.py
@@ -0,0 +1,83 @@
+from __future__ import print_function
+from os import environ
+import logging
+import sysconfig
+import requests
+from requests.exceptions import HTTPError
+
+
+#LABELS = [ 'irate(http_requests_total{code="200"}[1m])', 'collectd_cpu_percent{job="collectd", exported_instance="an11-31"}[1m]' ]
+#LABELS = ['irate(collectd_cpufreq{exported_instance="otconap7",cpufreq="1"}[2m])', 'go_info']
+API_VERSION = '/api/v1/query'
+LIST_OF_ENV_VARIABLES = ["PROMETHEUS_SERVER_URL"]
+MAP_ENV_VARIABLES = dict()
+#MAP_ENV_VARIABLES['PROMETHEUS_SERVER_URL']='http://172.25.103.1:30090' #to be deleted
+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['PROMETHEUS_SERVER_URL']='http://172.25.103.1:30090' # 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_m3db(LABELS):
+ """
+ Input parameters:
+ LABELS : a list of the LABELS
+ Return:
+ returns a list of result sets of different labels
+ """
+
+ LOG.info("Forming the get request ...")
+ list_of_substrings = []
+ params_map = {}
+ list_of_result_sets = []
+ list_of_substrings.append(MAP_ENV_VARIABLES['PROMETHEUS_SERVER_URL'])
+ 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
+
+
+# def main():
+# set_log_config()
+# load_and_validate_env_vars(LIST_OF_ENV_VARIABLES)
+# query_m3db(LABELS)
+
+# if __name__ == "__main__":
+# main() \ No newline at end of file
diff --git a/vnfs/DAaaS/applications/m3db_promql/sample_promql_query.py b/vnfs/DAaaS/applications/m3db_promql/sample_promql_query.py
new file mode 100644
index 00000000..ef360809
--- /dev/null
+++ b/vnfs/DAaaS/applications/m3db_promql/sample_promql_query.py
@@ -0,0 +1,12 @@
+from promql_api.prom_ql_api import query_m3db
+import pprint
+
+LABELS = ['irate(collectd_cpufreq{exported_instance="otconap7",cpufreq="1"}[2m])']
+
+def main():
+ list_of_result_sets = query_m3db(LABELS)
+ for each_result in list_of_result_sets:
+ pprint.pprint(each_result)
+
+if __name__ == "__main__":
+ main() \ No newline at end of file