Logstash http_poller post giving Name may not be found error - ruby

Question

Im trying to use the http_poller to fetch the data from ElasticSearch and write them into another ES. While doing this, ES query need to done as a POST request.
In the examples provided, I could not find the parameters that shoukd be used to post the body and it referred to the manticore client from ruby. Based n that, I have used the params parameter to post the body.
The http_poller component looks like this
input {
http_poller {
urls => {
some_other_service => {
method => "POST"
url => "http://localhost:9200/index-2016-03-26/_search"
params => '"query": { "filtered": { "filter": { "bool": { "must": [ { "term": { "SERVERNAME": "SERVER1" }}, {"range": { "eventtime": { "gte": "26/Mar/2016:13:00:00" }}} ]}}} }"'
}
}
# Maximum amount of time to wait for a request to complete
request_timeout => 300
# How far apart requests should be
interval => 300
# Decode the results as JSON
codec => "json"
# Store metadata about the request in this key
metadata_target => "http_poller_metadata"
}
}
output {
stdout {
codec => json
}
}
When I execute this, the Logstash gives an error,
Error: Name may not be null {:level=>:error}
Any help is appreciated.
The guess that I have is that the params need to be really key value pairs but then the question is as to how to post a query using logstash.
I referred to this link to get the available options for the HTTP Client
https://github.com/cheald/manticore/blob/master/lib/manticore/client.rb

Answer 1

Since I got the answer when I tried different options, thought I would share the solution as well.
Replace params with body in the above payload.
The correct payload to do a post using HTTP Poller is
input {
http_poller {
urls => {
some_other_service => {
method => "POST"
url => "http://localhost:9200/index-2016-03-26/_search"
body=> '"query": { "filtered": { "filter": { "bool": { "must": [ { "term": { "SERVERNAME": "SERVER1" }}, {"range": { "eventtime": { "gte": "26/Mar/2016:13:00:00" }}} ]}}} }"'
}
}
# Maximum amount of time to wait for a request to complete
request_timeout => 300
# How far apart requests should be
interval => 300
# Decode the results as JSON
codec => "json"
# Store metadata about the request in this key
metadata_target => "http_poller_metadata"
}
}
output {
stdout {
codec => json
}
}