# Query index from within an AnalysisProvider?
**URL:** https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191
**Category:** Elasticsearch
**Created:** [March 7, 2023, 2:26pm UTC](https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191 "2023-03-07T14:26:51Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@jnioche](https://discuss.elastic.co/u/jnioche)
#### Post date: [March 7, 2023, 2:26pm UTC](https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191/1 "2023-03-07T14:26:51Z")
Hi,
Here is the context of my question: **[Synonym graph token filter backed by Elastic index](https://discuss.elastic.co/t/synonym-graph-token-filter-backed-by-elastic-index/326616)**
I am writing a custom _AnalysisPlugin_ to generate a list of synonyms from an Elastic index instead of using a static file.
A naive approach would be to use the REST client during its instantiation and point it to localhost then query in the usual way to populate the synonym map but I was wondering whether there would be a more efficient / cleaner way of doing e.g. I have a TokenFilterFactory with the following constructor _(IndexSettings indexSettings, Environment env, String name, Settings settings)_, can I retrieve the port number from there? Is there a better way of doing?
Thanks
---
### Author:  [@jnioche](https://discuss.elastic.co/u/jnioche)
#### Post date: [March 8, 2023, 11:47am UTC](https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191/2 "2023-03-08T11:47:31Z")
Answering my own question: yes, it is possible to retrieve the host and port of Elasticsearch from the settings of the Environment object
```auto
this.port = env.settings().getAsInt(http.port, 9200);
this.host = env.settings().get(network.host,localhost);
```
this way my plugin doesn't need the users to set the values themselves, which is great.
Using this info with the Java client within the plugin code, I am getting
```auto
"caused_by" : {
"type" : "access_control_exception",
"reason" : "access denied (\"java.net.SocketPermission\" \"0.0.0.0:9200\" \"connect,resolve\")"
}
```
when querying the index with Elastic running as a docker container.
Is there a way I can either
1. configure ES to accept incoming traffic from a plugin it is runs?
2. use [Java security permissions in the plugin](https://www.elastic.co/guide/en/elasticsearch/plugins/8.6/plugin-authors.html#plugin-authors-jsm)?
Going back to my original question, is there an alternative to using the Java Ciient within the plugin to query Elastic?
Any help and pointers would be greatly appreciated
---
### Author:  [@jnioche](https://discuss.elastic.co/u/jnioche)
#### Post date: [March 8, 2023, 12:38pm UTC](https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191/3 "2023-03-08T12:38:38Z")
Changing the security permissions for the plugin did the trick.
Creating a file with
```auto
grant {
permission java.net.SocketPermission "localhost", "accept,connect,listen,resolve";
permission java.net.SocketPermission "0.0.0.0", "accept,connect,listen,resolve";
};
```
allows the code in my plugin to connect to ES
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 5, 2023, 12:38pm UTC](https://discuss.elastic.co/t/query-index-from-within-an-analysisprovider/327191/4 "2023-04-05T12:38:55Z")
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