Logstash is sending a log twice. Repeating logs Issue - logstash

Question

I am parsing logs of a file of my server and sending only info, warning and error level logs to my API but problem is that I am receiving a log two times. In output I am mapping parsed logs values to on my JSON fields and I am send that json to my API but I am receiving that mapping of json twice.
I am analyzing my logstash log file but a log entry is only appeared once in log file.
{
"log_EventMessage" => "Unable to sendViaPost to url[http://ubuntu:8280/services/TestProxy.TestProxyHttpSoap12Endpoint] Read timed ",
"message" => "TID: [-1234] [] [2017-08-11 12:03:11,545] INFO {org.apache.axis2.transport.http.HTTPSender} - Unable to sendViaPost to url[http://ubuntu:8280/services/TestProxy.TestProxyHttpSoap12Endpoint] Read time",
"type" => "carbon",
"TimeStamp" => "2017-08-11T12:03:11.545",
"tags" => [
[0] "grokked",
[1] "loglevelinfo",
[2] "_grokparsefailure"
],
"log_EventTitle" => "org.apache.axis2.transport.http.HTTPSender",
"path" => "/home/waqas/Documents/repository/logs/carbon.log",
"#timestamp" => 2017-08-11T07:03:13.668Z,
"#version" => "1",
"host" => "ubuntu",
"log_SourceSystemId" => "-1234",
"EventId" => "b81a054e-babb-426c-b0a0-268494d14a0e",
"log_EventType" => "INFO"
}
Following are my configuration.
Need help. Unable to figure out the reason that why this is happening.
input {
file {
path => "LOG_FILE_PATH"
type => "carbon"
start_position => "end"
codec => multiline {
pattern => "(^\s*at .+)|^(?!TID).*$"
negate => false
what => "previous"
auto_flush_interval => 1
}
}
}
filter {
#***********************************************************
# Grok Pattern to parse Single Line Log Entries
#**********************************************************
if [type] == "carbon" {
grok {
match => [ "message", "TID:%{SPACE}\[%{INT:log_SourceSystemId}\]%{SPACE}\[%{DATA:log_ProcessName}\]%{SPACE}\[%{TIMESTAMP_ISO8601:TimeStamp}\]%{SPACE}%{LOGLEVEL:log_EventType}%{SPACE}{%{JAVACLASS:log_EventTitle}}%{SPACE}-%{SPACE}%{GREEDYDATA:log_EventMessage}" ]
add_tag => [ "grokked" ]
}
mutate {
gsub => [
"TimeStamp", "\s", "T",
"TimeStamp", ",", "."
]
}
if "grokked" in [tags] {
grok {
match => ["log_EventType", "INFO"]
add_tag => [ "loglevelinfo" ]
}
grok {
match => ["log_EventType", "ERROR"]
add_tag => [ "loglevelerror" ]
}
grok {
match => ["log_EventType", "WARN"]
add_tag => [ "loglevelwarn" ]
}
}
#*****************************************************
# Grok Pattern in Case of Failure
#*****************************************************
if !( "_grokparsefailure" in [tags] ) {
grok{
match => [ "message", "%{GREEDYDATA:log_StackTrace}" ]
add_tag => [ "grokked" ]
}
date {
match => [ "timestamp", "yyyy MMM dd HH:mm:ss:SSS" ]
target => "TimeStamp"
timezone => "UTC"
}
}
}
#*******************************************************************
# Grok Pattern to handle MultiLines Exceptions and StackTraces
#*******************************************************************
if ( "multiline" in [tags] ) {
grok {
match => [ "message", "%{GREEDYDATA:log_StackTrace}" ]
add_tag => [ "multiline" ]
tag_on_failure => [ "multiline" ]
}
date {
match => [ "timestamp", "yyyy MMM dd HH:mm:ss:SSS" ]
target => "TimeStamp"
}
}
}
filter {
uuid {
target => "EventId"
}
}
output {
if [type] == "carbon" {
if "loglevelerror" in [tags] {
stdout{codec => rubydebug}
#*******************************************************************
# Sending Error Messages to API
#*******************************************************************
http {
url => "https://localhost:8000/logs"
headers => {
"Accept" => "application/json"
}
connect_timeout => 60
socket_timeout => 60
http_method => "post"
format => "json"
mapping => ["EventId","%{EventId}","EventSeverity","High","TimeStamp","%{TimeStamp}","EventType","%{log_EventType}","EventTitle","%{log_EventTitle}","EventMessage","%{log_EventMessage}","SourceSystemId","%{log_SourceSystemId}","StackTrace","%{log_StackTrace}"]
}
}
}
if [type] == "carbon" {
if "loglevelinfo" in [tags] {
stdout{codec => rubydebug}
#*******************************************************************
# Sending Info Messages to API
#*******************************************************************
http {
url => "https://localhost:8000/logs"
headers => {
"Accept" => "application/json"
}
connect_timeout => 60
socket_timeout => 60
http_method => "post"
format => "json"
mapping => ["EventId","%{EventId}","EventSeverity","Low","TimeStamp","%{TimeStamp}","EventType","%{log_EventType}","EventTitle","%{log_EventTitle}","EventMessage","%{log_EventMessage}","SourceSystemId","%{log_SourceSystemId}","StackTrace","%{log_StackTrace}"]
}
}
}
if [type] == "carbon" {
if "loglevelwarn" in [tags] {
stdout{codec => rubydebug}
#*******************************************************************
# Sending Warn Messages to API
http {
url => "https://localhost:8000/logs"
headers => {
"Accept" => "application/json"
}
connect_timeout => 60
socket_timeout => 60
http_method => "post"
format => "json"
mapping => ["EventId","%{EventId}","EventSeverity","Medium","TimeStamp","%{TimeStamp}","EventType","%{log_EventType}","EventTitle","%{log_EventTitle}","EventMessage","%{log_EventMessage}","SourceSystemId","%{log_SourceSystemId}","StackTrace","%{log_StackTrace}"]
}
}
}
}