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Pipeline chain download - target selection #1196
Closed
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PR description
Begins implementation of a pipeline based chain downloader.
Builds on #1194 so the new chain download process isn't currently in use (but unfortunately that makes the diff quite large).
PipelineChainDownloader
,DownloadPipelineFactory
andPipelineChainDownloaderTest
are the new changes in this PR.So far only the process of selecting a sync target, handling failures and cancellation are implemented. The actual pipeline to download and import blocks once a sync target is selected is behind an interface which doesn't yet have an available implementation.