lordgamez commented on a change in pull request #1052:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1052#discussion_r618508219
##########
File path: extensions/standard-processors/processors/TailFile.cpp
##########
@@ -653,29 +688,57 @@ void TailFile::onTrigger(const
std::shared_ptr<core::ProcessContext> &, const st
if (!session->existsFlowFileInRelationship(Success)) {
yield();
}
+
+ first_trigger_ = false;
+}
+
+bool TailFile::isOldFileInitiallyRead(TailState &state) const {
+ // This is our initial processing and no stored state was found
+ return first_trigger_ && state.last_read_time_ ==
std::chrono::system_clock::time_point{};
}
void TailFile::processFile(const std::shared_ptr<core::ProcessSession>
&session,
const std::string &full_file_name,
TailState &state) {
- uint64_t fsize = utils::file::FileUtils::file_size(full_file_name);
- if (fsize < state.position_) {
- processRotatedFiles(session, state);
- } else if (fsize == state.position_) {
- logger_->log_trace("Skipping file %s as its size hasn't change since last
read", state.file_name_);
- return;
+ if (isOldFileInitiallyRead(state)) {
+ if (initial_start_position_ == InitialStartPositions::BEGINNING_OF_TIME) {
+ processAllRotatedFiles(session, state);
+ } else if (initial_start_position_ == InitialStartPositions::CURRENT_TIME)
{
+ state.position_ = utils::file::FileUtils::file_size(full_file_name);
+ state.last_read_time_ = std::chrono::system_clock::now();
+ state.checksum_ =
utils::file::FileUtils::computeChecksum(full_file_name, state.position_);
+ storeState();
+ return;
+ }
+ } else {
+ uint64_t fsize = utils::file::FileUtils::file_size(full_file_name);
+ if (fsize < state.position_) {
+ processRotatedFilesAfterLastReadTime(session, state);
+ } else if (fsize == state.position_) {
+ logger_->log_trace("Skipping file %s as its size hasn't change since
last read", state.file_name_);
+ return;
+ }
}
processSingleFile(session, full_file_name, state);
}
-void TailFile::processRotatedFiles(const std::shared_ptr<core::ProcessSession>
&session, TailState &state) {
- std::vector<TailState> rotated_file_states = findRotatedFiles(state);
- for (TailState &file_state : rotated_file_states) {
- processSingleFile(session, file_state.fileNameWithPath(), file_state);
- }
- state.position_ = 0;
- state.checksum_ = 0;
+void TailFile::processRotatedFilesAfterLastReadTime(const
std::shared_ptr<core::ProcessSession> &session, TailState &state) {
+ std::vector<TailState> rotated_file_states =
findRotatedFilesAfterLastReadTime(state);
+ processRotatedFiles(session, state, rotated_file_states);
+}
+
+void TailFile::processAllRotatedFiles(const
std::shared_ptr<core::ProcessSession> &session, TailState &state) {
+ std::vector<TailState> rotated_file_states = findAllRotatedFiles(state);
+ processRotatedFiles(session, state, rotated_file_states);
+}
+
+void TailFile::processRotatedFiles(const std::shared_ptr<core::ProcessSession>
&session, TailState &state, std::vector<TailState> &rotated_file_states) {
+ for (TailState &file_state : rotated_file_states) {
+ processSingleFile(session, file_state.fileNameWithPath(), file_state);
Review comment:
It should be for a restart scenario, when the agent is restarted we
should know that those files are already processed and not new files, as in
that case we do not check for rollover patterns.
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