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https://issues.apache.org/jira/browse/METRON-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16131326#comment-16131326
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ASF GitHub Bot commented on METRON-1117:
----------------------------------------
GitHub user nickwallen opened a pull request:
https://github.com/apache/metron/pull/704
METRON-1117 Filters Functions Returns by '%functions'
As we continue to develop more Stellar functions, the list of functions
returned by `%functions` in the REPL becomes hard to grok manually. I wanted a
way to filter that list to narrow my search.
What is that subnet function that we have?
```
[Stellar]>>> %functions NET
IN_SUBNET
```
If no argument is provided, then all functions will be returned just like
before.
The filtering mechanism checks that the argument is a substring of the
function name; meaning it uses `String.contains` under the hood. It does not
use a regular expression. I debated with myself about which way to go and I
decided that it would be easier to go this way; `%function NET` is easier than
`%functions .*NET.*`
## Testing
To test the change launch the REPL.
```
mvn clean install -DskipTests
mvn exec:java
-Dexec.mainClass="org.apache.metron.stellar.common.shell.StellarShell" -pl
metron-platform/metron-enrichment
```
Then try-out the change to %functions.
```
[Stellar]>>> %functions
ABS, APPEND_IF_MISSING, BIN, BLOOM_ADD, BLOOM_EXISTS, BLOOM_INIT,
BLOOM_MERGE, CEILING, CHOMP, CHOP, COS, COUNT_MATCHES, DAY_OF_MONTH,
DAY_OF_WEEK, DAY_OF_YEAR, DECODE, DOMAIN_REMOVE_SUBDOMAINS, DOMAIN_REMOVE_TLD,
DOMAIN_TO_TLD, ENCODE, ENDS_WITH, ENRICHMENT_EXISTS, ENRICHMENT_GET, EXP,
FILL_LEFT, FILL_RIGHT, FILTER, FLOOR, FORMAT, GEO_GET, GET, GET_FIRST,
GET_LAST, GET_SUPPORTED_ENCODINGS, HLLP_ADD, HLLP_CARDINALITY, HLLP_INIT,
HLLP_MERGE, IN_SUBNET, IS_DATE, IS_DOMAIN, IS_EMAIL, IS_EMPTY, IS_ENCODING,
IS_INTEGER, IS_IP, IS_URL, JOIN, LENGTH, LIST_ADD, LN, LOG10, LOG2, MAP,
MAP_EXISTS, MAP_GET, MONTH, OUTLIER_MAD_ADD, OUTLIER_MAD_SCORE,
OUTLIER_MAD_STATE_MERGE, PREPEND_IF_MISSING, PROFILER_APPLY, PROFILER_FLUSH,
PROFILER_INIT, PROFILE_FIXED, PROFILE_GET, PROFILE_WINDOW, PROTOCOL_TO_NAME,
REDUCE, REGEXP_GROUP_VAL, REGEXP_MATCH, ROUND, SIN, SPLIT, SQRT, STARTS_WITH,
STATS_ADD, STATS_BIN, STATS_COUNT, STATS_GEOMETRIC_MEAN, STATS_INIT,
STATS_KURTOSIS, STATS_MAX, STATS_MEAN, STATS_MERGE, STATS_MIN,
STATS_PERCENTILE, STATS_POPULATION_VARIANCE, STATS_QUADRATIC_MEAN, STATS_SD,
STATS_SKEWNESS, STATS_SUM, STATS_SUM_LOGS, STATS_SUM_SQUARES, STATS_VARIANCE,
STRING_ENTROPY, SYSTEM_ENV_GET, SYSTEM_PROPERTY_GET, TAN, TO_DOUBLE,
TO_EPOCH_TIMESTAMP, TO_FLOAT, TO_INTEGER, TO_LONG, TO_LOWER, TO_STRING,
TO_UPPER, TRIM, URL_TO_HOST, URL_TO_PATH, URL_TO_PORT, URL_TO_PROTOCOL,
WEEK_OF_MONTH, WEEK_OF_YEAR, YEAR, ZIP, ZIP_LONGEST
[Stellar]>>> %functions TO
DOMAIN_TO_TLD, PROTOCOL_TO_NAME, STATS_KURTOSIS, TO_DOUBLE,
TO_EPOCH_TIMESTAMP, TO_FLOAT, TO_INTEGER, TO_LONG, TO_LOWER, TO_STRING,
TO_UPPER, URL_TO_HOST, URL_TO_PATH, URL_TO_PORT, URL_TO_PROTOCOL
[Stellar]>>> %functions NET
IN_SUBNET
```
## Pull Request Checklist
- [ ] Is there a JIRA ticket associated with this PR? If not one needs to
be created at [Metron
Jira](https://issues.apache.org/jira/browse/METRON/?selectedTab=com.atlassian.jira.jira-projects-plugin:summary-panel).
- [ ] Does your PR title start with METRON-XXXX where XXXX is the JIRA
number you are trying to resolve? Pay particular attention to the hyphen "-"
character.
- [ ] Has your PR been rebased against the latest commit within the target
branch (typically master)?
- [ ] Have you included steps to reproduce the behavior or problem that is
being changed or addressed?
- [ ] Have you included steps or a guide to how the change may be verified
and tested manually?
- [ ] Have you ensured that the full suite of tests and checks have been
executed in the root metron
- [ ] Have you written or updated unit tests and or integration tests to
verify your changes?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] Have you verified the basic functionality of the build by building
and running locally with Vagrant full-dev environment or the equivalent?
- [ ] Have you ensured that format looks appropriate for the output in
which it is rendered by building and verifying the site-book? If not then run
the following commands and the verify changes via
`site-book/target/site/index.html`:
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/nickwallen/metron METRON-1117
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/metron/pull/704.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #704
----
----
> Filter Functions Returned by `%functions`
> -----------------------------------------
>
> Key: METRON-1117
> URL: https://issues.apache.org/jira/browse/METRON-1117
> Project: Metron
> Issue Type: Bug
> Reporter: Nick Allen
> Assignee: Nick Allen
>
> As we get develop more and more Stellar functions, the list of functions
> returned by `%functions` in the REPL becomes hard to grok manually. I'd like
> a way to easily filter the list.
> For example, what is that subnet function that we have?
> {code}
> [Stellar]>>> %functions NET
> IN_SUBNET
> {code}
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