Yep, that makes sense, Casey. I understand multiline is still just the same when statement. I was more responding to Otto's concern about dealing with 50 whens.
In regards to multiline, I don't know if adding that is worth the potential confusion. I prefer very simple configs that are stupid simple to grok. I don't have a strong opinion on multiline though, so could go either way. On Fri, Jan 13, 2017 at 10:38 AM, Casey Stella <ceste...@gmail.com> wrote: > Nick, Yep, that's the example I showed. I'm just suggesting that that when > use the multiline JSON trick here > <https://gun.io/blog/multi-line-strings-in-json/>. A single "when" > statement with a couple "or"'s > So: > "when" : [ "exists(field1) or" > , "exists(field2) or" > , "exists(field3)" > ] > would resolve to "exists(field1) or exists(field2), or exists(field3)", a > single stellar statement behind the scene because the array is joined with > space into a single string. > > On Fri, Jan 13, 2017 at 10:34 AM, Nick Allen <n...@nickallen.org> wrote: > > > I was thinking there would only be one 'when' for each output. So if we > > have Elasticsearch and HDFS, you would have only 2 'when's. Each when > > statement could be as simple or complex as you need. > > > > On Fri, Jan 13, 2017 at 10:08 AM, Otto Fowler <ottobackwa...@gmail.com> > > wrote: > > > > > How does it look with 50 whens > > > > > > > > > On January 13, 2017 at 10:02:02, Casey Stella (ceste...@gmail.com) > > wrote: > > > > > > Ok, so here's what I'm thinking based on the discussion: > > > > > > - Keeping the configs that we have now (batchSize and index) as > defaults > > > for the unspecified writer-specific case > > > - Adding the config Nick suggested > > > > > > *Base Case*: > > > { > > > } > > > > > > - all writers write all messages > > > - index named the same as the sensor for all writers > > > - batchSize of 1 for all writers > > > > > > *Writer-non-specific case*: > > > { > > > "index" : "foo" > > > ,"batchSize" : 100 > > > } > > > > > > - All writers write all messages > > > - index is named "foo", different from the sensor for all writers > > > - batchSize is 100 for all writers > > > > > > *Writer-specific case without filters* > > > { > > > "index" : "foo" > > > ,"batchSize" : 1 > > > , "writerConfig" : > > > { > > > "elasticsearch" : { > > > "batchSize" : 100 > > > } > > > } > > > } > > > > > > - All writers write all messages > > > - index is named "foo", different from the sensor for all writers > > > - batchSize is 1 for HDFS and 100 for elasticsearch writers > > > - NOTE: I could override the index name too > > > > > > *Writer-specific case with filters* > > > { > > > "index" : "foo" > > > ,"batchSize" : 1 > > > , "writerConfig" : > > > { > > > "elasticsearch" : { > > > "batchSize" : 100, > > > "when" : "exists(field1)" > > > }, > > > "hdfs" : { > > > "when" : "false" > > > } > > > } > > > } > > > > > > - ES writer writes messages which have field1, HDFS doesn't > > > - index is named "foo", different from the sensor for all writers > > > - 100 for elasticsearch writers > > > > > > Thoughts? > > > > > > On Fri, Jan 13, 2017 at 9:44 AM, Carolyn Duby <cd...@hortonworks.com> > > > wrote: > > > > > > > For larger installations you need to control what is indexed so you > > don’t > > > > end up with a nasty elastic search situation and so you can mine the > > data > > > > later for reports and training ml models. > > > > > > > > Thanks > > > > Carolyn > > > > > > > > > > > > > > > > > > > > On 1/13/17, 9:40 AM, "Casey Stella" <ceste...@gmail.com> wrote: > > > > > > > > >OH that's a good idea! > > > > > > > > > >On Fri, Jan 13, 2017 at 9:39 AM, Nick Allen <n...@nickallen.org> > > wrote: > > > > > > > > > >> I like the "Index Filtering" option based on the flexibility that > it > > > > >> provides. Should each output (HDFS, ES, etc) have its own > > > configuration > > > > >> settings? For example, aren't things like batching handled > > separately > > > > for > > > > >> HDFS versus Elasticsearch? > > > > >> > > > > >> Something along the lines of... > > > > >> > > > > >> { > > > > >> "hdfs" : { > > > > >> "when": "exists(field1)", > > > > >> "batchSize": 100 > > > > >> }, > > > > >> > > > > >> "elasticsearch" : { > > > > >> "when": "true", > > > > >> "batchSize": 1000, > > > > >> "index": "squid" > > > > >> } > > > > >> } > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> > > > > >> On Fri, Jan 13, 2017 at 9:10 AM, Casey Stella <ceste...@gmail.com > > > > > > wrote: > > > > >> > > > > >> > Yeah, I tend to like the first option too. Any opposition to > that > > > > from > > > > >> > anyone? > > > > >> > > > > > >> > The points brought up are good ones and I think that it may be > > worth > > > a > > > > >> > broader discussion of the requirements of indexing in a separate > > dev > > > > list > > > > >> > thread. Maybe a list of desires with coherent use-cases > justifying > > > > them > > > > >> so > > > > >> > we can think about how this stuff should work and where the > > natural > > > > >> > extension points should be. Afterall, we need to toe the line > > > between > > > > >> > engineering and overengineering for features nobody will want. > > > > >> > > > > > >> > I'm not sure about the extensions to the standard fields. I'm > torn > > > > >> between > > > > >> > the notions that we should have no standard fields vs we should > > have > > > a > > > > >> > boatload of standard fields (with most of them empty). I > exchange > > > > >> > positions fairly regularly on that question. ;) It may be worth > a > > > dev > > > > >> list > > > > >> > discussion to lay out how you imagine an extension of standard > > > fields > > > > and > > > > >> > how it might look as implemented in Metron. > > > > >> > > > > > >> > Casey > > > > >> > > > > > >> > Casey > > > > >> > > > > > >> > On Thu, Jan 12, 2017 at 9:58 PM, Kyle Richardson < > > > > >> > kylerichards...@gmail.com> > > > > >> > wrote: > > > > >> > > > > > >> > > I'll second my preference for the first option. I think the > > > ability > > > > to > > > > >> > use > > > > >> > > Stellar filters to customize indexing would be a big win. > > > > >> > > > > > > >> > > I'm glad Matt brought up the point about data lake and CEP. I > > > think > > > > >> this > > > > >> > is > > > > >> > > a really important use case that we need to consider. Take a > > > simple > > > > >> > > example... If I have data coming in from 3 different firewall > > > > vendors > > > > >> > and 2 > > > > >> > > different web proxy/url filtering vendors and I want to be > able > > to > > > > >> > analyze > > > > >> > > that data set, I need the data to be indexed all together > > (likely > > > in > > > > >> > HDFS) > > > > >> > > and to have a normalized schema such that IP address, URL, and > > > user > > > > >> name > > > > >> > > (to take a few) can be easily queried and aggregated. I can > also > > > > >> envision > > > > >> > > scenarios where I would want to index data based on attributes > > > other > > > > >> than > > > > >> > > sensor, business unit or subsidiary for example. > > > > >> > > > > > > >> > > I've been wanted to propose extending our 7 standard fields to > > > > include > > > > >> > > things like URL and user. Is there community interest/support > > for > > > > >> moving > > > > >> > in > > > > >> > > that direction? If so, I'll start a new thread. > > > > >> > > > > > > >> > > Thanks! > > > > >> > > > > > > >> > > -Kyle > > > > >> > > > > > > >> > > On Thu, Jan 12, 2017 at 6:51 PM, Matt Foley <ma...@apache.org > > > > > > wrote: > > > > >> > > > > > > >> > > > Ah, I see. If overriding the default index name allows using > > the > > > > >> same > > > > >> > > > name for multiple sensors, then the goal can be achieved. > > > > >> > > > Thanks, > > > > >> > > > --Matt > > > > >> > > > > > > > >> > > > > > > > >> > > > On 1/12/17, 3:30 PM, "Casey Stella" <ceste...@gmail.com> > > wrote: > > > > >> > > > > > > > >> > > > Oh, you could! Let's say you have a syslog parser with data > > > > from > > > > >> > > > sources 1 > > > > >> > > > 2 and 3. You'd end up with one kafka queue with 3 parsers > > > > >> attached > > > > >> > > to > > > > >> > > > that > > > > >> > > > queue, each picking part the messages from source 1, 2 and > 3. > > > > >> > They'd > > > > >> > > > go > > > > >> > > > through separate enrichment and into the indexing topology. > > > > In > > > > >> the > > > > >> > > > indexing topology, you could specify the same index name > > > > "syslog" > > > > >> > and > > > > >> > > > all > > > > >> > > > of the messages go into the same index for CEP querying if > so > > > > >> > > desired. > > > > >> > > > > > > > >> > > > On Thu, Jan 12, 2017 at 6:27 PM, Matt Foley < > ma...@apache.org > > > > > > > > > >> > > wrote: > > > > >> > > > > > > > >> > > > > Syslog is hell on parsers – I know, I worked at LogLogic > in > > > > a > > > > >> > > > previous > > > > >> > > > > life. It makes perfect sense to route different lines from > > > > >> > syslog > > > > >> > > > through > > > > >> > > > > different appropriate parsers. But a lot of what the > > > > parsers > > > > >> do > > > > >> > is > > > > >> > > > > identify consistent subsets of metadata and annotate it – > > > > eg, > > > > >> > > > src_ip_addr, > > > > >> > > > > event timestamps, etc. Once those metadata are annotated > > > > and > > > > >> > > > available > > > > >> > > > > with common field names, why doesn’t it make sense to > index > > > > the > > > > >> > > > messages > > > > >> > > > > together, for CEP querying? I think Splunk has illustrated > > > > >> this > > > > >> > > > model. > > > > >> > > > > > > > > >> > > > > On 1/12/17, 3:00 PM, "Casey Stella" <ceste...@gmail.com> > > > > >> wrote: > > > > >> > > > > > > > > >> > > > > yeah, I mean, honestly, I think the approach that we've > > > > >> taken > > > > >> > > for > > > > >> > > > > sources > > > > >> > > > > which aggregate different types of data is to provide > > > > >> filters > > > > >> > > at > > > > >> > > > the > > > > >> > > > > parser > > > > >> > > > > level and have multiple parser topologies (with > > > > different, > > > > >> > > > possibly > > > > >> > > > > mutually exclusive filters) running. This would be a > > > > >> > > completely > > > > >> > > > > separate > > > > >> > > > > sensor. Imagine a syslog data source that aggregates > > > > and > > > > >> you > > > > >> > > > want to > > > > >> > > > > pick > > > > >> > > > > apart certain pieces of messages. This is why the > > > > initial > > > > >> > > > thought and > > > > >> > > > > architecture was one index per sensor. > > > > >> > > > > > > > > >> > > > > On Thu, Jan 12, 2017 at 5:55 PM, Matt Foley < > > > > >> > ma...@apache.org> > > > > >> > > > wrote: > > > > >> > > > > > > > > >> > > > > > I’m thinking that CEP (Complex Event Processing) is > > > > >> > contrary > > > > >> > > > to the > > > > >> > > > > idea > > > > >> > > > > > of silo-ing data per sensor. > > > > >> > > > > > Now it’s true that some of those sensors are already > > > > >> > > > aggregating > > > > >> > > > > data from > > > > >> > > > > > multiple sources, so maybe I’m wrong here. > > > > >> > > > > > But it just seems to me that the “data lake” insights > > > > >> come > > > > >> > > from > > > > >> > > > > being able > > > > >> > > > > > to make decisions over the whole mass of data rather > > > > than > > > > >> > > just > > > > >> > > > > vertical > > > > >> > > > > > slices of it. > > > > >> > > > > > > > > > >> > > > > > On 1/12/17, 2:15 PM, "Casey Stella" < > > > > ceste...@gmail.com> > > > > >> > > > wrote: > > > > >> > > > > > > > > > >> > > > > > Hey Matt, > > > > >> > > > > > > > > > >> > > > > > Thanks for the comment! > > > > >> > > > > > 1. At the moment, we only have one index name, the > > > > >> > > default > > > > >> > > > of > > > > >> > > > > which is > > > > >> > > > > > the > > > > >> > > > > > sensor name but that's entirely up to the user. > > > > This > > > > >> > is > > > > >> > > > sensor > > > > >> > > > > > specific, > > > > >> > > > > > so it'd be a separate config for each sensor. If > > > > we > > > > >> > want > > > > >> > > > to > > > > >> > > > > build > > > > >> > > > > > multiple > > > > >> > > > > > indices per sensor, we'd have to think carefully > > > > >> about > > > > >> > > how > > > > >> > > > to do > > > > >> > > > > that > > > > >> > > > > > and > > > > >> > > > > > would be a bigger undertaking. I guess I can see > > > > the > > > > >> > > use, > > > > >> > > > though > > > > >> > > > > > (redirect > > > > >> > > > > > messages to one index vs another based on a > > > > predicate > > > > >> > for > > > > >> > > > a given > > > > >> > > > > > sensor). > > > > >> > > > > > Anyway, not where I was originally thinking that > > > > this > > > > >> > > > discussion > > > > >> > > > > would > > > > >> > > > > > go, > > > > >> > > > > > but it's an interesting point. > > > > >> > > > > > > > > > >> > > > > > 2. I hadn't thought through the implementation > > > > quite > > > > >> > yet, > > > > >> > > > but we > > > > >> > > > > don't > > > > >> > > > > > actually have a splitter bolt in that topology, > > > > just > > > > >> a > > > > >> > > > spout > > > > >> > > > > that goes > > > > >> > > > > > to > > > > >> > > > > > the elasticsearch writer and also to the hdfs > > > > writer. > > > > >> > > > > > > > > > >> > > > > > On Thu, Jan 12, 2017 at 4:52 PM, Matt Foley < > > > > >> > > > ma...@apache.org> > > > > >> > > > > wrote: > > > > >> > > > > > > > > > >> > > > > > > Casey, good to have controls like this. Couple > > > > >> > > > questions: > > > > >> > > > > > > > > > > >> > > > > > > 1. Regarding the “index” : “squid” name/value > > > > pair, > > > > >> > is > > > > >> > > > the > > > > >> > > > > index name > > > > >> > > > > > > expected to always be a sensor name? Or is the > > > > >> given > > > > >> > > > json > > > > >> > > > > structure > > > > >> > > > > > > subordinate to a sensor name in zookeeper? Or > > > > can > > > > >> we > > > > >> > > > build > > > > >> > > > > arbitrary > > > > >> > > > > > > indexes with this new specification, > > > > independent of > > > > >> > > > sensor? > > > > >> > > > > Should > > > > >> > > > > > there > > > > >> > > > > > > actually be a list of “indexes”, ie > > > > >> > > > > > > { “indexes” : [ > > > > >> > > > > > > {“index” : “name1”, > > > > >> > > > > > > … > > > > >> > > > > > > }, > > > > >> > > > > > > {“index” : “name2”, > > > > >> > > > > > > … > > > > >> > > > > > > } ] > > > > >> > > > > > > } > > > > >> > > > > > > > > > > >> > > > > > > 2. Would the filtering / writer selection logic > > > > >> take > > > > >> > > > place in > > > > >> > > > > the > > > > >> > > > > > indexing > > > > >> > > > > > > topology splitter bolt? Seems like that would > > > > have > > > > >> > the > > > > >> > > > > smallest > > > > >> > > > > > impact on > > > > >> > > > > > > current implementation, no? > > > > >> > > > > > > > > > > >> > > > > > > Sorry if these are already answered in PR-415, I > > > > >> > > haven’t > > > > >> > > > had > > > > >> > > > > time to > > > > >> > > > > > > review that one yet. > > > > >> > > > > > > Thanks, > > > > >> > > > > > > --Matt > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > On 1/12/17, 12:55 PM, "Michael Miklavcic" < > > > > >> > > > > > michael.miklav...@gmail.com> > > > > >> > > > > > > wrote: > > > > >> > > > > > > > > > > >> > > > > > > I like the flexibility and expressibility of > > > > >> the > > > > >> > > > first > > > > >> > > > > option > > > > >> > > > > > with > > > > >> > > > > > > Stellar > > > > >> > > > > > > filters. > > > > >> > > > > > > > > > > >> > > > > > > M > > > > >> > > > > > > > > > > >> > > > > > > On Thu, Jan 12, 2017 at 1:51 PM, Casey > > > > Stella < > > > > >> > > > > > ceste...@gmail.com> > > > > >> > > > > > > wrote: > > > > >> > > > > > > > > > > >> > > > > > > > As of METRON-652 < > > > > https://github.com/apache/ > > > > >> > > > > > > incubator-metron/pull/415>, we > > > > >> > > > > > > > will have decoupled the indexing > > > > >> configuration > > > > >> > > > from the > > > > >> > > > > > enrichment > > > > >> > > > > > > > configuration. As an immediate follow-up > > > > to > > > > >> > > that, > > > > >> > > > I'd > > > > >> > > > > like to > > > > >> > > > > > > provide the > > > > >> > > > > > > > ability to turn off and on writers via the > > > > >> > > > configs. I'd > > > > >> > > > > like > > > > >> > > > > > to get > > > > >> > > > > > > some > > > > >> > > > > > > > community feedback on how the > > > > functionality > > > > >> > > should > > > > >> > > > work, > > > > >> > > > > if > > > > >> > > > > > y'all are > > > > >> > > > > > > > amenable. :) > > > > >> > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > As of now, we have 3 possible writers > > > > which > > > > >> can > > > > >> > > be > > > > >> > > > used > > > > >> > > > > in the > > > > >> > > > > > > indexing > > > > >> > > > > > > > topology: > > > > >> > > > > > > > > > > > >> > > > > > > > - Solr > > > > >> > > > > > > > - Elasticsearch > > > > >> > > > > > > > - HDFS > > > > >> > > > > > > > > > > > >> > > > > > > > HDFS is always used, elasticsearch or > > > > solr is > > > > >> > > used > > > > >> > > > > depending > > > > >> > > > > > on how > > > > >> > > > > > > you > > > > >> > > > > > > > start the indexing topology. > > > > >> > > > > > > > > > > > >> > > > > > > > A couple of proposals come to mind > > > > >> immediately: > > > > >> > > > > > > > > > > > >> > > > > > > > *Index Filtering* > > > > >> > > > > > > > > > > > >> > > > > > > > You would be able to specify a filter as > > > > >> > defined > > > > >> > > > by a > > > > >> > > > > stellar > > > > >> > > > > > > statement > > > > >> > > > > > > > (likely a reuse of the StellarFilter that > > > > >> > exists > > > > >> > > > in the > > > > >> > > > > > Parsers) > > > > >> > > > > > > which > > > > >> > > > > > > > would allow you to indicate on a > > > > >> > > > message-by-message basis > > > > >> > > > > > whether or > > > > >> > > > > > > not to > > > > >> > > > > > > > write the message. > > > > >> > > > > > > > > > > > >> > > > > > > > The semantics of this would be as follows: > > > > >> > > > > > > > > > > > >> > > > > > > > - Default (i.e. unspecified) is to pass > > > > >> > > > everything > > > > >> > > > > through > > > > >> > > > > > (hence > > > > >> > > > > > > > backwards compatible with the current > > > > >> > default > > > > >> > > > config). > > > > >> > > > > > > > - Messages which have the associated > > > > >> stellar > > > > >> > > > statement > > > > >> > > > > > evaluate > > > > >> > > > > > > to true > > > > >> > > > > > > > for the writer type will be written, > > > > >> > otherwise > > > > >> > > > not. > > > > >> > > > > > > > > > > > >> > > > > > > > > > > > >> > > > > > > > Sample indexing config which would write > > > > out > > > > >> no > > > > >> > > > messages > > > > >> > > > > to > > > > >> > > > > > HDFS and > > > > >> > > > > > > write > > > > >> > > > > > > > out only messages containing a field > > > > called > > > > >> > > > "field1": > > > > >> > > > > > > > { > > > > >> > > > > > > > "index" : "squid" > > > > >> > > > > > > > ,"batchSize" : 100 > > > > >> > > > > > > > ,"filters" : { > > > > >> > > > > > > > "HDFS" : "false" > > > > >> > > > > > > > ,"ES" : "exists(field1)" > > > > >> > > > > > > > } > > > > >> > > > > > > > } > > > > >> > > > > > > > > > > > >> > > > > > > > *Index On/Off Switch* > > > > >> > > > > > > > > > > > >> > > > > > > > A simpler solution would be to just > > > > provide a > > > > >> > > list > > > > >> > > > of > > > > >> > > > > writers > > > > >> > > > > > to > > > > >> > > > > > > write > > > > >> > > > > > > > messages. The semantics would be as > > > > follows: > > > > >> > > > > > > > > > > > >> > > > > > > > - If the list is unspecified, then the > > > > >> > default > > > > >> > > > is to > > > > >> > > > > write > > > > >> > > > > > all > > > > >> > > > > > > messages > > > > >> > > > > > > > for every writer in the indexing > > > > topology > > > > >> > > > > > > > - If the list is specified, then a > > > > writer > > > > >> > will > > > > >> > > > write > > > > >> > > > > all > > > > >> > > > > > messages > > > > >> > > > > > > if and > > > > >> > > > > > > > only if it is named in the list. > > > > >> > > > > > > > > > > > >> > > > > > > > Sample indexing config which turns off > > > > HDFS > > > > >> and > > > > >> > > > keeps on > > > > >> > > > > > > Elasticsearch: > > > > >> > > > > > > > { > > > > >> > > > > > > > "index" : "squid" > > > > >> > > > > > > > ,"batchSize" : 100 > > > > >> > > > > > > > ,"writers" : [ "ES" ] > > > > >> > > > > > > > } > > > > >> > > > > > > > > > > > >> > > > > > > > Thanks in advance for the feedback! > > > > Also, if > > > > >> > you > > > > >> > > > have > > > > >> > > > > any > > > > >> > > > > > other, > > > > >> > > > > > > better > > > > >> > > > > > > > ideas than the ones presented here, let me > > > > >> know > > > > >> > > > too. > > > > >> > > > > > > > > > > > >> > > > > > > > Best, > > > > >> > > > > > > > > > > > >> > > > > > > > Casey > > > > >> > > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > > >> > > > > > > >> > > > > > >> > > > > >> > > > > >> > > > > >> -- > > > > >> Nick Allen <n...@nickallen.org> > > > > >> > > > > > > > > > > > > > > > -- > > Nick Allen <n...@nickallen.org> > > > -- Nick Allen <n...@nickallen.org>