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elasticsearch-follow-0.2.6


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توضیحات

An Elasticsearch tail
ویژگی مقدار
سیستم عامل -
نام فایل elasticsearch-follow-0.2.6
نام elasticsearch-follow
نسخه کتابخانه 0.2.6
نگهدارنده []
ایمیل نگهدارنده []
نویسنده Marc Schiereck
ایمیل نویسنده mdreem@fastmail.fm
آدرس صفحه اصلی https://github.com/mdreem/elasticsearch_follow
آدرس اینترنتی https://pypi.org/project/elasticsearch-follow/
مجوز -
# Follow Elasticsearch continuously [![CircleCI](https://circleci.com/gh/mdreem/elasticsearch_follow.svg?style=svg&circle-token=a53243ea7942ee439f51be3ea4fce2628ed4d58f)](https://circleci.com/gh/mdreem/elasticsearch_follow) [![Codacy Badge](https://api.codacy.com/project/badge/Grade/d192317c5ff74fd7a17dc5c0c2f13317)](https://www.codacy.com/manual/mdreem/elasticsearch_follow?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=mdreem/elasticsearch_follow&amp;utm_campaign=Badge_Grade) [![Coverage Status](https://coveralls.io/repos/github/mdreem/elasticsearch_follow/badge.svg?branch=master)](https://coveralls.io/github/mdreem/elasticsearch_follow?branch=master) ## Overview elasticsearch_follow is library helping to query Elasticsearch continuously. It needs <https://github.com/elastic/elasticsearch-py> as a dependency. elasticsearch_follow acts as a wrapper for elasticsearch-py and handles various use-cases, like following logs by polling elasticsearch continuously and fetching loglines via a generator. It is possible to easily fetch lines surrounding a given logline. ### How to poll Elasticsearch continuously The polling logic is implemented in the class ElasticsearchFollow, which needs an Elasircsearch object from elasticsearch-py. The class Follower takes an ElasticsearchFollow-object and has a method to create a generator which yields loglines until all elements of a query have been returned. After this a new generator has to be created and used. ### How to fetch log-lines from Elasticsearch To just fetch loglines, one can use ElasticsearchFetch which has a search_surrounding. This returns a list of lists, where each list contains the queried loglines and the lines before and after as requested by the parameters num_before and num_after. ## Installation You can install the ``elasticsearch`` package with pip: ```bash pip install elasticsearch_follow ``` See also: <https://pypi.org/project/elasticsearch-follow/> ## Example usage This package introduces the command line tool ``es_tail`` which can be used for following logs written to Elasticsearch and directly fetching log lines by a query. It is possible to configure the output via an format string. ```bash # Follow the logs written to the indexes starting with logstash. # Print the fieds @timestamp and message es_tail -c "http://localhost:9200" tail --index "logstash*" -f "{@timestamp} {message}" # Fetch all logs in the last hour with the field loglevel contains ERROR and fetch the two lines before and after. # Print the fieds @timestamp and message es_tail -c "http://localhost:9200" fetch --index "logstash" -f "{@timestamp} {message}" --query loglevel:ERROR -A 2 -B 2 -F "now-1h" # It is also possible to print nested fields es_tail -c "http://localhost:9200" fetch --index "logstash" -f "{@timestamp} {message} {kv[field]} {kv[nested][field]}" -F "now-1h" ``` The command line options can also be given via environment variables by using the prefix ``ES_TAIL``. For example ```bash export ES_TAIL_USERNAME='username' export ES_TAIL_PASSWORD='password' es_tail -c http://localhost:9200 tail ``` ## Example usage of the library ```python from elasticsearch import Elasticsearch from elasticsearch_follow import ElasticsearchFollow, Follower es = Elasticsearch() es_follow = ElasticsearchFollow(elasticsearch=es) # The Follower is used to get a generator which yields new # elements until it runs out. time_delta give the number of # seconds to look into the past. follower = Follower(elasticsearch_follow=es_follow, index='some-index', time_delta=60) while True: entries = follower.generator() for entry in entries: print(entry) time.sleep(0.1) ```


نیازمندی

مقدار نام
- python-dateutil
- elasticsearch
- pytz
- click
- certifi


نحوه نصب


نصب پکیج whl elasticsearch-follow-0.2.6:

    pip install elasticsearch-follow-0.2.6.whl


نصب پکیج tar.gz elasticsearch-follow-0.2.6:

    pip install elasticsearch-follow-0.2.6.tar.gz