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Title: OpenEDR Event Flow Upload.exe -> SFTP-Service: upload event files note: - Windows event files are [rotated by NXLog-CE](https://github.com/jymcheong/OpenEDRclient/blob/master/configurations/noImageLoadNxlog.conf#L47). - After file is uploaded, Upload.exe signals to receiver that a file is ready for processing by creating a directory that has the <fileName + .uploaded>. - This scheme is resilient to transfer disruptions & mitigates event losses due to network or process-crash issues. - Upload.exe will always auto-restart & retry until it is able to create the signal folder & remove the file at the Windows sender end. SFTP-Service -> insertEvent.js : move file to r/w directory note: - Incrond runs within [SFTP service container](https://github.com/jymcheong/OpenEDR/blob/master/docker-compose.yml#L91) - Incrond [uses script](https://github.com/jymcheong/OpenEDR/blob/master/backend/sftp/dockerbuild/files/incron.sh) to move content file upon detecting signaling folder to a [folder monitored](https://github.com/jymcheong/OpenEDR/blob/master/docker-compose.yml#L107) by [insertEvent.js](https://github.com/jymcheong/OpenEDR/blob/master/backend/insertEvent.js#L39) insertEvent.js -> OrientDB : AddEvent(...) note: - the uploaded file consists of many json lines - AddEvent is a server-side function within OrientDB (a graph database) - insertEvent.js escapes the json line before [calling AddEvent](https://github.com/jymcheong/OpenEDR/blob/master/backend/insertEvent.js#L113) to process a json line - We can view server-side function with ODB web UI under functions tab. - AddEvent in turns call other ODB functions to process each line. - It is an intensive function & can slow write-rate