Nicholas DiPiazza created TIKA-3226:
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Summary: Add custom connector endpoint
Key: TIKA-3226
URL: https://issues.apache.org/jira/browse/TIKA-3226
Project: Tika
Issue Type: New Feature
Components: server
Reporter: Nicholas DiPiazza
Let's say you call the following api to parse a file and get its metadata and
body content:
{code}
/rmeta/text
{code}
In order to do this, the caller needs to send the file to the tika server, then
get the metadata and body sent to the caller. When you are working in
microservices, this causes a lot of inner-service network communication.
You can cut down on a majority of this overhead by using the local file system
optimization. So that you send a file path instead of the entire file. But this
obviously only works when you are on the same machine.
Ideally - we would have a way to deploy "connector plugins" into tika, and be
able to send files to be parsed with these plugins asynchronously.
{code}
/connector/{fetcherId}/{emitterId}
{code}
The Fetcher interface:
init(Map initParams)
- initializes the fetcher (for example, initialize an http connection pool,
etc)
void fetch(Map parseParams, Metadata metadata, OutputStream bodyOutputStream)
- fetches the document indicated by parseParams and does whatever it is you
want with it (for example, download a file from a web data source, then index
the document into Solr). Sends the body to bodyOutputStream and metadata object
will be populated with the metadata).
The Emitter interface would be
init(Map initParams)
- initializes the emitter. (for example, initialize a buffer to store output
documents to solr, connect to solr, etc)
void emit(Map parseParams, Fetcher fetcher)
- fetches and parses the "document" using the passed in fetcher, then emits
it meaningfully.
We could provide the most common fetchers and emitters such as:
HttpFetcher
S3Fetcher
SolrEmitter
...
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