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View File Name : elasticsearch.py

import agent_util


class ElasticSearchPlugin(agent_util.Plugin):
    textkey = "elasticsearch"
    label = "Elastic Search"

    @classmethod
    def get_metadata(self, config):
        status = agent_util.SUPPORTED
        msg = None

        if not config:
            self.log.info(
                "The [elasticsearch] config block not found in the config file")
            return {}

        if not "hostname" in config or not "port" in config:
            self.log.info(
                "The [elasticsearch] config block does not contain variables for hostname and/or port")
            return {}

        if not agent_util.which("curl", exc=False):
            self.log.info('curl not found!')
            status = agent_util.UNSUPPORTED
            msg = "Curl is not installed - please install"
            return {}

        options = []

        data = {
            "number_of_nodes": {
                "label": "Total number of nodes in cluster",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "number_of_data_nodes": {
                "label": "Number of data nodes in cluster",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "active_primary_shards": {
                "label": "Number of active primary shards",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "active_shards": {
                "label": "Total number of shards",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "relocating_shards": {
                "label": "Number of shards getting relocated",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "initializing_shards": {
                "label": "Number of initializing shards",
                "options": None,
                "status": status,
                "error_message": msg
            },
            "unassigned_shards": {
                "label": "Number of unassigned shards",
                "options": None,
                "status": status,
                "error_message": msg
            }
        }
        return data

    def check(self, textkey, data, config):

        user_string = ""
        if config.get('username') and config.get('password'):
            user_string = "--user %s:%s" % (config.get('username'),
                                            config.get('password'))

        cmd = 'curl %s %s:%s/_cluster/health' % (
            user_string, config['hostname'], config['port'])
        ret, output = agent_util.execute_command(cmd)
        reply = agent_util.json_loads(output)
        return int(reply[textkey])