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sequenceDiagram
    participant Client
    participant ExecuteRoute as /api/workflows/[id]/execute
    participant ExecutionCore
    participant BlockExecutor
    participant FileParseAPI as /api/files/parse
    participant Storage as Execution Storage
    participant Redis as Redis Cache

    Client->>ExecuteRoute: POST (includeFileBase64: true)
    ExecuteRoute->>ExecutionCore: executeWorkflowCore()
    ExecutionCore->>BlockExecutor: execute block (e.g., File Parser)
    BlockExecutor->>FileParseAPI: parse file
    FileParseAPI->>Storage: uploadExecutionFile()
    Storage-->>FileParseAPI: UserFile (with key)
    FileParseAPI-->>BlockExecutor: ParseResult with UserFile
    
    Note over BlockExecutor: if includeFileBase64 && containsUserFileWithMetadata
    BlockExecutor->>Redis: cache.get(file)
    alt Cache hit
        Redis-->>BlockExecutor: base64 string
    else Cache miss
        BlockExecutor->>Storage: downloadFileFromStorage()
        Storage-->>BlockExecutor: Buffer
        BlockExecutor->>BlockExecutor: bufferToBase64()
        BlockExecutor->>Redis: cache.set(file, base64, ttl)
    end
    BlockExecutor-->>ExecutionCore: output with UserFile.base64
    
    ExecutionCore-->>ExecuteRoute: ExecutionResult
    ExecuteRoute->>ExecuteRoute: hydrateUserFilesWithBase64(output)
    ExecuteRoute->>Redis: cleanupExecutionBase64Cache(executionId)
    ExecuteRoute-->>Client: Response with base64 hydrated files

cursor Bot reviewed Jan 21, 2026

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11 checks passed

icecrasher321 deleted the feat/file-base64 branch January 21, 2026 01:49

* fix(google): wrap primitive tool responses for Gemini API compatibility (#2900)

* fix(canonical): copilot path + update parent (#2901)

* fix(rss): add top-level title, link, pubDate fields to RSS trigger output (#2902)

* fix(rss): add top-level title, link, pubDate fields to RSS trigger output

* fix(imap): add top-level fields to IMAP trigger output

* improvement(browseruse): add profile id param (#2903)

* improvement(browseruse): add profile id param

* make request a stub since we have directExec

* improvement(executor): upgraded abort controller to handle aborts for loops and parallels (#2880)

* improvement(executor): upgraded abort controller to handle aborts for loops and parallels

* comments

* improvement(files): update execution for passing base64 strings (#2906)

* progress

* improvement(execution): update execution for passing base64 strings

* fix types

* cleanup comments

* path security vuln

* reject promise correctly

* fix redirect case

* remove proxy routes

* fix tests

* use ipaddr

* feat(tools): added textract, added v2 for mistral, updated tag dropdown (#2904)

* feat(tools): added textract

* cleanup

* ack pr comments

* reorder

* removed upload for textract async version

* fix additional fields dropdown in editor, update parser to leave validation to be done on the server

* added mistral v2, files v2, and finalized textract

* updated the rest of the old file patterns, updated mistral outputs for v2

* updated tag dropdown to parse non-operation fields as well

* updated extension finder

* cleanup

* added description for inputs to workflow

* use helper for internal route check

* fix tag dropdown merge conflict change

* remove duplicate code

---------

Co-authored-by: Vikhyath Mondreti <[email protected]>

* fix(ui): change add inputs button to match output selector (#2907)

* fix(canvas): removed invite to workspace from canvas popover (#2908)

* fix(canvas): removed invite to workspace

* removed unused props

* fix(copilot): legacy tool display names (#2911)

* fix(a2a): canonical merge  (#2912)

* fix canonical merge

* fix empty array case

* fix(change-detection): copilot diffs have extra field (#2913)

* improvement(logs): improved logs ui bugs, added subflow disable UI (#2910)

* improvement(logs): improved logs ui bugs, added subflow disable UI

* added duplicate to action bar for subflows

* feat(broadcast): email v0.5 (#2905)

---------

Co-authored-by: Vikhyath Mondreti <[email protected]>
Co-authored-by: Vikhyath Mondreti <[email protected]>
Co-authored-by: Emir Karabeg <[email protected]>