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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import sys
import logging
import traceback
import os.path
import re
import json
from elasticsearch import Elasticsearch
import elasticsearch.helpers
class ESPerform(object):
cli_obj = None
cli_info_list = [
{
"host": "10.29.130.141",
"port": 9200
}
]
index_prefix = "gm-dbmw"
@classmethod
def get_cli(cls):
try:
cls.cli_obj = Elasticsearch(cls.cli_info_list)
return cls.cli_obj
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return None
@classmethod
def get_official_index_name(cls,sub_index_name,index_flag=None):
"""
:remark:get official es index name
:param sub_index_name:
:param index_flag:
:return:
"""
try:
assert (index_flag in [None,"read","write"])
official_index_name = cls.index_prefix + "-" + sub_index_name
if index_flag:
official_index_name += "-" + index_flag
return official_index_name
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return None
@classmethod
def __load_mapping(cls,doc_type):
try:
mapping_file_path = os.path.join(
os.path.dirname(__file__),
'..', 'trans2es','mapping', '%s.json' % (doc_type,))
mapping = ''
with open(mapping_file_path, 'r') as f:
for line in f:
# 去掉注释
mapping += re.sub(r'//.*$', '', line)
mapping = json.loads(mapping)
return mapping
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return None
@classmethod
def create_index(cls,es_cli,sub_index_name):
"""
:remark: create es index,alias index
:param sub_index_name:
:return:
"""
try:
assert (es_cli is not None)
official_index_name = cls.get_official_index_name(sub_index_name)
index_exist = es_cli.indices.exists(official_index_name)
if not index_exist:
es_cli.indices.create(official_index_name)
read_alias_name = cls.get_official_index_name(sub_index_name,"read")
es_cli.indices.put_alias(official_index_name,read_alias_name)
write_alias_name = cls.get_official_index_name(sub_index_name,"write")
es_cli.indices.put_alias(official_index_name,write_alias_name)
return True
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return False
@classmethod
def put_index_mapping(cls,es_cli,sub_index_name,mapping_type="_doc"):
"""
:remark: put index mapping
:param es_cli:
:param sub_index_name:
:param mapping_type:
:return:
"""
try:
assert (es_cli is not None)
write_alias_name = cls.get_official_index_name(sub_index_name,"write")
index_exist = es_cli.indices.exists(write_alias_name)
if not index_exist:
return False
mapping_dict = cls.__load_mapping(sub_index_name)
es_cli.indices.put_mapping(index=write_alias_name,body=mapping_dict,doc_type=mapping_type)
return True
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return False
@classmethod
def es_helpers_bulk(cls,es_cli,data_list,sub_index_name,auto_create_index=False,doc_type="_doc"):
try:
assert (es_cli is not None)
official_index_name = cls.get_official_index_name(sub_index_name)
index_exists = es_cli.indices.exists(official_index_name)
if not index_exists:
if not auto_create_index:
logging.error("index:%s is not existing,bulk data error!" % official_index_name)
return False
else:
cls.create_index(es_cli,sub_index_name)
cls.put_index_mapping(es_cli,sub_index_name)
bulk_actions = []
for data in data_list:
bulk_actions.append({
'_op_type': 'index',
'_index': official_index_name,
'_type': doc_type,
'_id': data['id'],
'_source': data,
})
elasticsearch.helpers.bulk(es_cli,bulk_actions)
return True
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return False
@classmethod
def get_search_results(cls, es_cli,sub_index_name,query_body,offset=0,size=10,
auto_create_index=False,doc_type="_doc",aggregations_query=False):
try:
assert (es_cli is not None)
official_index_name = cls.get_official_index_name(sub_index_name,"read")
index_exists = es_cli.indices.exists(official_index_name)
if not index_exists:
if not auto_create_index:
logging.error("index:%s is not existing,get_search_results error!" % official_index_name)
return None
else:
cls.create_index(es_cli,sub_index_name)
cls.put_index_mapping(es_cli,sub_index_name)
logging.info("duan add,query_body:%s" % str(query_body).encode("utf-8"))
res = es_cli.search(index=official_index_name,doc_type=doc_type,body=query_body,from_=offset,size=size)
result_dict = {
"total_count":res["hits"]["total"],
"hits":res["hits"]["hits"]
}
if aggregations_query:
result_dict["aggregations"] = res["aggregations"]
return result_dict
except:
logging.error("catch exception,err_msg:%s" % traceback.format_exc())
return {"total_count":0,"hits":[]}