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app.py
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app.py
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# -*- coding: utf-8 -*-
import time
import json
import glob
from datetime import datetime
from pprint import pprint
from elasticsearch import Elasticsearch
import click
ES_URL = 'localhost'
FROM = 0
CHUNK = 1000
@click.group()
def cli():
pass
@click.command(help='export json format from elasticsearch')
@click.option('--host', '-h', type=click.STRING, required=True, default=ES_URL, help='host of elasticsearch(include port number)')
@click.option('--index', '-i', type=click.STRING, required=True, help='index name')
@click.option('--file', '-f', type=click.STRING, help='ouput filename')
@click.option('--verbose', '-v', is_flag=True, help='verbose message')
def exporter(host, index, file, verbose):
print('Elastic Hunter')
start_dt = datetime.now()
es = Elasticsearch(host)
res = es.count(index=index)
count = res['count']
print('host name: {}'.format(host))
print('index name: {}'.format(index))
print('count of document on index: {}'.format(count))
if verbose:
pprint(es)
pprint(es.info())
if not file:
file = '{}.json'.format(index)
with open(file, 'w') as fp:
for i in range(FROM, count, CHUNK):
res = es.search(index=index, body={}, from_=i, size=CHUNK)
pprint(res) if verbose else None
docs = res['hits']['hits']
for i in docs:
fp.write('%s\n' % json.dumps(i['_source']))
es.close()
finish_dt = datetime.now()
print('elaspsed time: {}'.format(finish_dt-start_dt))
print("Done")
@click.command(help='import json format into elasticsearch')
@click.option('--host', '-h', type=click.STRING, required=True, default=ES_URL, help='host of elasticsearch(include port number)')
@click.option('--index', '-i', type=click.STRING, required=True, help='index name')
@click.option('--file', '-f', type=click.STRING, required=True, help='input filename')
@click.option('--verbose', '-v', is_flag=True, help='verbose message')
def importer(host, index, file, verbose):
print('Elastic Hunter')
start_dt = datetime.now()
es = Elasticsearch(host)
print('host name: {}'.format(host))
print('index name: {}'.format(index))
if verbose:
pprint(es)
pprint(es.info())
if file.endswith('*'):
files = glob.glob(file)
else:
files = [file]
for f in files:
with open(f, 'r') as fp:
for line in fp.readlines():
body = json.loads(line)
res = es.index(index=index, body=body)
if verbose:
pprint(body)
pprint(res)
time.sleep(5)
res = es.count(index=index)
count = res['count']
print('count of document on index: {}'.format(count))
es.close()
finish_dt = datetime.now()
print('elaspsed time: {}'.format(finish_dt-start_dt))
print("Done")
@click.command(help='export json format from elasticsearch by scroll api (for large index)')
@click.option('--host', '-h', type=click.STRING, required=True, default=ES_URL, help='host of elasticsearch(include port number)')
@click.option('--index', '-i', type=click.STRING, required=True, help='index name')
@click.option('--file', '-f', type=click.STRING, help='ouput filename')
@click.option('--verbose', '-v', is_flag=True, help='verbose message')
def scroll_exporter(host, index, file, verbose):
print('Elastic Hunter')
start_dt = datetime.now()
es = Elasticsearch(host)
res = es.count(index=index)
count = res['count']
print('host name: {}'.format(host))
print('index name: {}'.format(index))
if verbose:
pprint(es)
pprint(es.info())
if not file:
file = '{}.json'.format(index)
with open(file, 'w') as fp:
resp = es.search(
index=index,
body={
'size': 10000,
'query': {
'match_all': {}
},
'sort': [
'_doc'
]
},
scroll = '1m'
)
old_scroll_id = resp['_scroll_id']
for doc in resp['hits']['hits']:
fp.write('%s\n' % json.dumps(doc['_source']))
while len(resp['hits']['hits']):
resp = es.scroll(
scroll_id = old_scroll_id,
scroll = '1m'
)
old_scroll_id = resp['_scroll_id']
for doc in resp['hits']['hits']:
fp.write('%s\n' % json.dumps(doc['_source']))
print('count of document on index: {}'.format(count))
print('scroll_id: {}'.format(old_scroll_id))
es.clear_scroll(scroll_id='_all')
es.close()
finish_dt = datetime.now()
print('elaspsed time: {}'.format(finish_dt-start_dt))
print("Done")
cli.add_command(exporter)
cli.add_command(importer)
cli.add_command(scroll_exporter)
if __name__=='__main__':
cli()