json_lines_example.log

{ "@timestamp": "2015-02-02T04:25:26+0000", "@fields": { "status": 200, "request": "/author/", "bytes": 43, "more": { "host" : "localhost"} } }
{ "@timestamp": "2015-02-02T04:25:27+0000", "@fields": { "status": 404, "request": "/title/", "bytes": 84, "more": { "host" : "localhost"} } }
{ "@timestamp": "2015-02-02T04:25:28+0000", "@fields": { "status": 302, "request": "/publisher/", "bytes": 45, "more": { "host" : "localhost"} } }
{ "@timestamp": "2015-02-02T04:25:29+0000", "@fields": { "status": 202, "request": "/keywords/", "bytes": 700, "more": { "host" : "localhost"} } }

kingdom_joy_json_and_json_lines_codec.conf

input {
    # http://logstash.net/docs/1.4.2/inputs/generator
    generator {
        type => "generated"
        message => '{ "@timestamp": "2014-01-01T03:14:15+0000", "@fields": { "status": 200, "request": "/quote/", "bytes": 612, "more": { "host" : "localhost"} } }'
        count => 1
        codec => json
    }
    # http://logstash.net/docs/1.4.2/inputs/exec
    exec {
        command => "cat json_lines_example.log"
        codec => json_lines
        interval => 60
    }
}

filter {
}

output {
    stdout { codec => rubydebug }
}