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https://issues.apache.org/jira/browse/MINIFICPP-39?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16214169#comment-16214169
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ASF GitHub Bot commented on MINIFICPP-39:
-----------------------------------------
Github user minifirocks commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/148#discussion_r146120896
--- Diff: libminifi/include/core/ProcessSession.h ---
@@ -151,11 +152,47 @@ class ProcessSession {
bool keepSource,
uint64_t offset, char inputDelimiter);
+ /**
+ * Exports the data stream to a file
+ * @param string file to export stream to
+ * @param flow flow file
+ * @param bool whether or not to keep the content in the flow file
+ */
+ bool exportContent(const std::string &destination,
--- End diff --
the mergeContent.h
// Archive Class
class ArchiveMerge {
public:
do not reply on persistent storage, it use archive_write_open(arch, this,
NULL, archive_write, NULL); to write the process content in RAM into flowfile.
> Create FocusArchive processor
> -----------------------------
>
> Key: MINIFICPP-39
> URL: https://issues.apache.org/jira/browse/MINIFICPP-39
> Project: NiFi MiNiFi C++
> Issue Type: Task
> Reporter: Andrew Christianson
> Assignee: Andrew Christianson
> Priority: Minor
>
> Create an FocusArchive processor which implements a lens over an archive
> (tar, etc.). A concise, though informal, definition of a lens is as follows:
> "Essentially, they represent the act of “peering into” or “focusing in on”
> some particular piece/path of a complex data object such that you can more
> precisely target particular operations without losing the context or
> structure of the overall data you’re working with."
> https://medium.com/@dtipson/functional-lenses-d1aba9e52254#.hdgsvbraq
> Why an FocusArchive in MiNiFi? Simply put, it will enable us to "focus in on"
> an entry in the archive, perform processing *in-context* of that entry, then
> re-focus on the overall archive. This allows for transformation or other
> processing of an entry in the archive without losing the overall context of
> the archive.
> Initial format support is tar, due to its simplicity and ubiquity.
> Attributes:
> - Path (the path in the archive to focus; "/" to re-focus the overall archive)
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