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https://issues.apache.org/jira/browse/TIKA-4722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18077636#comment-18077636
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Nicholas DiPiazza commented on TIKA-4722:
-----------------------------------------
PR opened: https://github.com/apache/tika/pull/2797
> tika-grpc: Add handler_type field to FetchAndParseRequest for per-request
> content handler configuration
> -------------------------------------------------------------------------------------------------------
>
> Key: TIKA-4722
> URL: https://issues.apache.org/jira/browse/TIKA-4722
> Project: Tika
> Issue Type: New Feature
> Reporter: Nicholas DiPiazza
> Assignee: Nicholas DiPiazza
> Priority: Major
>
> h2. Summary
> Add a {{handler_type}} field to the {{FetchAndParseRequest}} gRPC message so
> callers can specify the output content handler type (e.g., {{html}},
> {{text}}, {{xml}}) on a per-request basis, without needing to change the
> server-level configuration.
> h2. Background
> The {{tika-grpc}} server currently creates a bare {{ParseContext}} for every
> parse request with no way for clients to control the output format. The
> underlying {{tika-pipes-core}} infrastructure already supports per-request
> {{ContentHandlerFactory}} via {{ParseContext}} (see
> {{ParseHandler.getContentHandlerFactory()}}), but this capability is not
> exposed through the gRPC API.
> A downstream user (Atolio) implemented this in their fork and uses it to get
> HTML output from Tika, which they then convert to Markdown. Apache Tika's
> gRPC API should expose this natively.
> h2. Proposed Change
> # Add {{handler_type}} (string, field 5) to {{FetchAndParseRequest}} in
> {{tika.proto}}
> # In {{TikaGrpcServerImpl.fetchAndParseImpl()}}, if {{handler_type}} is set,
> resolve it to a {{BasicContentHandlerFactory}} and place it in the
> {{ParseContext}}
> h2. Valid handler_type Values
> * {{text}} (default) - plain text
> * {{html}} - structured HTML output
> * {{xml}} - XHTML output
> * {{body}} - HTML body only
> * {{ignore}} - no content
> * {{markdown}} - Markdown output
> h2. Example Usage (Java gRPC client)
> {code:java}
> FetchAndParseRequest request = FetchAndParseRequest.newBuilder()
> .setFetcherId("my-fetcher")
> .setFetchKey("document.pdf")
> .setHandlerType("html")
> .build();
> {code}
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