BackupUploadService with LocalBackupUploader added.

[oleksii-opanasenko]

The BackupUploadService added to CStoreService. Logic added to 'processorList' chain of the 'store' method. File is saving to backup (local in this PR) before sending. If upload fails - then we start resend it with timeout repeatedly until the first successful result. It repeats fixed amount of times (by flag). New configuration flags: --persistent_file_storage_location --persistent_file_upload_retry_amount --min_upload_delay --max_waiting_time_btw_uploads If resend processing fails- then we log it and fixing to MonitoringService. Added unit tests: DelayCalculatorTest LocalBackupUploaderTest BackupStateTest BackupUploadServiceTest

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[oleksii-opanasenko]

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[pavertomato]

@googlebot I signed it!

@oleksii-opanasenko all commits in pull request have to be signed with email which were used to sign cla, simplest way to fix your case is squash all commits into single one with correct email https://www.internalpointers.com/post/squash-commits-into-one-git git rebase --interactive ceb0c07b18 git commit --amend --author="Oleksii Opanasenko <cla-email@mail.mail>"

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[oleksii-opanasenko]

@googlebot I signed it!

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[danielbeaudreau]

Thanks, a few last small suggestions then this will be good to submit. I need to get the presubmit checks running for this code too and confirm if we can use Mockito

Re: "But this approach adds new risks on situation when --persistent_file_storage_location is set -> BackupUploadService created: if local or GCP uploader fails on read / write to backup file, then file will not be uploaded.", yes that's true, but I think this risk is preferable to buffering the file into memory which will likely lead to OOM failures at a high QPS. It was a conscious decision we made in the design of this feature.

"and it`s OutputStream will be empty or in invalid state." as far as I can tell our processStream code in CstoreService.java should prevent this from happening. Did you reproduce this during testing?

[oleksii-opanasenko]

@oleksii-opanasenko all commits in pull request have to be signed with email which were used to sign cla, simplest way to fix your case is squash all commits into single one with correct email https://www.internalpointers.com/post/squash-commits-into-one-git git rebase --interactive ceb0c07b18 git commit --amend --author="Oleksii Opanasenko <cla-email@mail.mail>"

Thanks for advice, Egor.

[oleksii-opanasenko]

@googlebot I fixed it.