There was a know issue in the multiline filter that it doesn't print the last part of input being filtered as it is still waiting for a pattern to follow and it isn't flushed out.
Has the issue been resolved. If so how?Is there a tag to flush out the last part?
The flushing feature is supposed to be in logstash 1.5 according to this JIRA: https://logstash.jira.com/browse/LOGSTASH-1785 although an "experimental" feature of 1.4.2 added enable_flush to the multiline filter. I have not personally tested to see if that fixes the flushing issue with the last event.
With Logstash 5.1.1 there is auto_flush_interval option.
The accumulation of multiple lines will be converted to an event when either a matching new line is seen or there has been no new data appended for this time auto_flush_interval. No default. If unset, no auto_flush .
Source: docs
Simply set
codec => multiline {
pattern => "^%{DATESTAMP_OTHER}"
what => "previous"
negate => true
# set to time in secs when to flush
auto_flush_interval => 15
}
Related
My requirement is my file name should change every 5 minutes . Currently I am using below configuration to change it every minute. Please tell me some way to change it every 5 minute.
output {
stdout { codec => rubydebug }
csv {
# elastic field name
fields => ["#timestamp","requestid","ngnix.responsebytes"]
# This is path where we store output.
path => "C:/Users/M1056317/ELK/csv/try6/csv-export-%{+YYYY-MM-dd_hh.mm}.csv"
}
}
I don't think that the time format will allow you to do this.
Another way to achieve what you need is to always write to C:/Users/M1056317/ELK/csv/try6/csv-export.csv and use LogRotate (or equivalent) to rotate your logs every five minutes.
I have a CSV file with some fields which contain "\n". The field is in quotes, so it displays properly on excel or using pandas in python. However using the CSV filter in logstash doesn't work properly and gives either CSV parse error or wrong fields. Anyone who has experience with this before?
I also saw this issue on github: https://github.com/logstash-plugins/logstash-filter-csv/issues/34 but it's a year old.
have you tryed the multiline codec?
You should add something like this in your input plugin:
codec => multiline {
pattern => "^[0-9]"
negate => "true"
what => "previous"
}
it tells logstash that every line not starting with a number should be merged with the previous line
see
Loading csv in ElasticSearch using logstash
I have problem when i want to add a label on a Node or to a Relatioship.
I do this in Neo4j with Cypher:
LOAD CSV WITH HEADERS FROM "file:c:/Users/Test/test.csv" AS line
CREATE (n:line.FROM)
and i get this error:
Invalid input '.': expected an identifier character, whitespace, NodeLabel, a property map, ')' or a relationship pattern (line 2, column 15 (offset: 99))
"CREATE (n:line.FROM)"
If there is not a possible way of doing this with the Cypher Language, can you recommend me an other way to do my job?
It is very important to find a solution on this problem even with a Cypher solution or any Java thing to do this job...
Depends on how dynamic you need it to be, for small variability:
LOAD CSV WITH HEADERS FROM "file:c:/Users/Test/test.csv" AS line
WHERE line.FROM = "Foo"
CREATE (n:Foo)
From Java you can use node.addLabel(DynamicLabel.label(line.from))
Otherwise you can look into my neo4j-shell-tools, which allow dynamic labels and rel-types: with #{FROM}.
see: https://github.com/jexp/neo4j-shell-tools#cypher-import
Thank you all for your answers but none of them helped me to solve my problem.
I found a solution to do exactly what i wanted. The solution was the Neo4jImporter tool (Link from official manual: Neo4jImporter tool Manual ) and not Cypher language nor Java.
So here is an example of what i have done and worked for me
A test.csv file contains the "PropertyTest" and ":LABEL". Firstly it creates one node with the label "TEST" and after the creation it adds the "proptest" property on the "TEST" node. So to add a Label on your node you use :LABEL and to add a Property on the same node you add any name you want as a header in .csv file.
Example of test.csv file:
PropertyTest,:LABEL
proptest,TEST
For windows i've done the Neo4jImport.bat command as it is described in the manual page of Neo4j.You can found the Neo4jImport.bat in Windows at "C:\Program Files\Neo4j Community\bin" and you run it from command line (cmd).
In details i opened the cmd, i followed the path to Neo4jImport.bat and finaly i wrote:
Neo4jImport.bat --into path-to-save-your-neo4j-database --nodes path-to-your-csv\test.csv
--delimiter ","
The default delimiter of Neo4jImporter is the "," but you can change it. For example if your information in .csv file is seperated with tab you can do the following:
Neo4jImport.bat --into path-to-save-your-neo4j-database --nodes path-to-your-csv\test.csv
--delimiter "TAB"
That was the way that i loaded dynamically a whole model of almost 2.000 nodes with different Labels and Properties.
Keep in mind from the manual that you can add as many labels and as many properties you want on a node by adding to your csv more headers
Example of two Labels in a node:
PropertyTest,:LABEL,:LABEL
proptest,TEST,SECOND_LABEL
Example of Neo4jImport.bat for two Labels and comma seperated CSV file:
Neo4jImport.bat --into path-to-save-your-neo4j-database --nodes path-to-your-csv\test.csv
--delimiter ","
I hope that you will find it useful to this certain problem of Labels from .csv files and please read the official manual, it helped me a lot to find a solution for my problem.
Below is the way for two csv files MIP_nodes.csv and MIP_edges.csv:
//Load csv data into the database - with dynamic label(s)
WITH "file:///MIP_nodes.csv" AS uri
LOAD CSV WITH HEADERS FROM uri AS row
WITH * WHERE row.label <> ""
call apoc.merge.node ([row.label],{nodeId:row.nodeId, name: row.name, type: row.type, created: row.created, property1: row.property1, property2: row.property2})
YIELD node as n1
//RETURN n1
WITH * WHERE row.label = ""
call apoc.merge.node (['DefaultNode'],{nodeId:row.nodeId, name: row.name, type: row.type, created: row.created, property1: row.property1, property2: row.property2})
YIELD node as n2
RETURN n1, n2
//Load csv data into the database - with dynamic relationship(s)
//:auto USING PERIODIC COMMIT 500
LOAD CSV WITH HEADERS FROM 'file:///MIP_edges.csv' AS row
MATCH (s)
WHERE s.nodeId = row.sourceId
//RETURN s
MATCH (d)
WHERE d.nodeId = row.destinationId
//RETURN d
CALL apoc.merge.relationship(s, row.label,{type:row.type, created: row.created, property1: row.property1, property2: row.property2},{}, d,{})
YIELD rel
//REMOVE rel.noOp;
RETURN rel;
I have an AMPL script that involves calling "solve" on a linear program many times. The solver I'm using is MINOS. After every time it solves, it outputs:
MINOS 5.51:
"option abs_boundtol 2.220446049250313e-16;" or "option
rel_boundtol 2.220446049250313e-16;" will change deduced dual values.
Is there a way to suppress this message?
I read this in the MINOS instructions:
For invocations from AMPL's solve command or of the form
minos stub ...
(where stub.nl is from AMPL's -ob or -og output options), you can use
outlev= to control the amount and kind of output:
outlev=0 no chatter on stdout
outlev=1 only report options on stdout
outlev=2 summary file on stdout
outlev=3 log file on stdout, no solution
outlev=4 log file, including solution, on stdout
which might be relevant but I don't understand it.
I have included "option solver_msg 0;" in my script; it turns off the announcement from MINOS that it got such-and-such an optimal value with so many iterations, but it doesn't affect the message I'm asking about here.
You can redirect the remaining solver output to /dev/null (or equivalent for your system) as follows:
solve > /dev/null;
As for the message about abs_boundtol and rel_boundtol, I think you can set them to a small positive value larger than 2.220446049250313e-16 to make the message go away. Note that this will affect the dual values computed for presolved constraints.
See also https://groups.google.com/d/msg/ampl/ERJ8nF_LnNU/75yWK9deBjUJ
for me "option show_boundtol 0;" worked. You can try this. By default it is "option show_boundtol 1;".
You can read about it here (http://ftp.icm.edu.pl/packages/netlib/ampl/changes)
I've studied HTML5 EventSource specification and can't figure out how to parse and handle carriage return at end of received data.
App receives data stream that is composed of lines. Each line can be terminated by \r\n, \n or \r. On blank line, event should be considered ready and fired to listeners.
data: foobar\r\n
id: 1\r\n
\r\n
Equally valid event with same content
data: foobar\n
id: 1\r\n
\r
Full spec here, http://dev.w3.org/html5/eventsource/ The chapter 6. describes the BNF of the input.
Problem is the carriage return when it's seen at end of received data. Now, as far as I can understand, proper way of parsing is to do longest match search and thua wait for next data batch. Problem is, that if \r truly was the empty line marker, the event wont be fired until next data batch arrives and parser has enough data to attempt longest match.
Current data batch
data: foobar\r\n
id: 1\r\n
\r
Next data batch
\n
data: foobar2\r\n
id: 1\r\n
\r\n
Alternative Case. Next data batch
data: foobar2\r\n
id: 1\r\n
\r\n
This would not be problem in traditional parsing, but it's in EventSource because I need to trigger events as soon as possible, so if implementation waits for next data batch to get longest match, it might wait for a long time if sender used single character '\r' as empty line marker and it's not going to send anything else for a while.
Interesting problem! I assume you are not using a browser but writing your own client? (If writing server-side code, always send just \n or just \r!!)
The solution is when reading from the socket, to convert any "\r\n" sequence to "\r".
In other words, as soon as you get the "\r" you can treat it as end-of-line, do whatever processing you need, and set a CR_just_received flag. If you receive a "\n" and CR_just_received==true then quietly swallow it. Make sure CR_just_received is cleared whenever any byte except \r is received.