The Controller app of the PDF Aggregation Service.

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Lampros Smyrnaios 0178e44574 - Increase security by sanitizing the value of the "workerId" before use it in sql-statements. Impala has bugs with some types of PreparedStatements. - Improve reliability, by dropping the "current_assignment" table in case of an error, thus the next "getUrls"-request will not fail. - Fix the "databaseLock" not being unlocked when the "addWorkerReport()" method returned early on some error-cases. - Delete the "assignment"-data after inserting the related payloads and attempts in the database.		2021-12-10 21:47:58 +02:00
gradle/wrapper	- Fix a bug, which caused the get-full-texts request to fail, because of the wrong "requestAssignmentsCounter".	2021-12-06 20:18:30 +02:00
scripts	Initial commit of UrlsController.	2021-03-16 15:25:15 +02:00
src/main	- Increase security by sanitizing the value of the "workerId" before use it in sql-statements. Impala has bugs with some types of PreparedStatements.	2021-12-10 21:47:58 +02:00
README.md	- Implement the "getAndUploadFullTexts" functionality. In order to access the S3-ObjectStore from one trusted place, the Controller will request the files from the workers and upload them on S3. Afterwards, the workers will delete those files from their local storage. Previously, each worker uploaded its own files.	2021-11-30 18:23:27 +02:00
build.gradle	- Increase the lower and upper limits for the Java Heap Size.	2021-12-06 20:27:39 +02:00
installAndRun.sh	- Fix a bug, which caused the get-full-texts request to fail, because of the wrong "requestAssignmentsCounter".	2021-12-06 20:18:30 +02:00
settings.gradle	- Add the "isControllerAlive"-endpoint.	2021-09-23 15:08:52 +03:00

README.md

UrlsController

This is the Controller's Application.
It receives requests coming from the workers , constructs an assignments-list with data received from a database and returns the list to the workers.
Then it receives the "WorkerReports" and writes them into the database.
The database used is the Impala .
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To install and run the application, run git clone. Then, provide a file "S3_minIO_credentials.txt", inside the working directory.
In the "S3_minIO_credentials.txt" file, you should provide the endpoint, the accessKey, the secretKey, the region and the bucket, in that order, separated by comma.
Afterwards, execute the installAndRun.sh script.
If you want to just run the app, then run the script with the argument "1": ./installAndRun.sh 1.