[METRON-1378] Create a summarizer

• Type: Improvement
• Status: Done
• Priority: Major
• Resolution: Done
• Fix Version/s: 0.5.0
• Assignee: Casey Stella
• Reporter: Casey Stella
• Created: 21/Dec/17 21:25
• Updated: 22/May/18 19:34
• Resolved: 31/Jan/18 04:03

Description

We have a nice and generalized infrastructure for loading data into HBase and interacting with it via `flatfile_loader.sh` and `ENRICHMENT_GET()`. It is also useful to summarize a set of data into a static data structure, store it on HDFS and interact with it via stellar. To this end, to complement the `flatfile_loader.sh`, we should have a `flatfile_summarizer.sh` that, using the same extractor config, will process a flat file and output a serialized object.

The usecase for this is as follows:
Let's say that I have a static list of domains in the second column of a CSV, domains.csv, and I want to generate a bloom filter with those domains in them sans TLD.

I should be able to create a file called `bloom.ser` with the serialized bloom filter given the extractor config:

{
  "config" : {
    "columns" : {
       "rank" : 0,
       "domain" : 1
    },
    "value_transform" : {
       "domain" : "DOMAIN_REMOVE_TLD(domain)"
    },
    "value_filter" : "LENGTH(domain) > 0",
    "state_init" : "BLOOM_INIT()",
    "state_update" : {
       "state" : "BLOOM_ADD(state, domain)"
                     },
    "state_merge" : "BLOOM_MERGE(states)",
    "separator" : ","
  },
  "extractor" : "CSV"
}

Note, the associated stellar function `OBJECT_GET` is pending.

Issue Links

• blocks: METRON-1380 Create a typosquatting use-case
• links to: GitHub Pull Request #879