Package app.coronawarn.server.services.distribution.objectstore

Class S3Publisher

java.lang.Object

app.coronawarn.server.services.distribution.objectstore.S3Publisher

public class S3Publisher
extends Object

Publishes a folder on the disk to S3 while keeping the folder and file structure.
Moreover, does the following:

• Publishes index files on a different route, removing the trailing "/index" part.
• Adds meta information to the uploaded files, e.g. the sha256 hash value.
• Only performs the upload for files, which do not yet exist on the object store, and checks whether the existing files hash differ from the to-be-uploaded files hash. Only if the hash differs, the file will ultimately be uploaded
• Currently not implemented: Set cache control headers
• Currently not implemented: Supports multi threaded upload of files.

Constructor Summary

Constructors

Constructor	Description
S3Publisher(Path root, ObjectStoreAccess objectStoreAccess, FailedObjectStoreOperationsCounter failedOperationsCounter)	Creates an S3Publisher instance that attempts to publish the files at the specified location to an object store.

Method Summary

Modifier and Type	Method	Description
void	publish()	Synchronizes the files to S3.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

S3Publisher

public S3Publisher(Path root,
                   ObjectStoreAccess objectStoreAccess,
                   FailedObjectStoreOperationsCounter failedOperationsCounter)

Creates an S3Publisher instance that attempts to publish the files at the specified location to an object store. Object store operations are performed through the specified ObjectStoreAccess instance.

Parameters:

root - The path of the directory that shall be published.

objectStoreAccess - The ObjectStoreAccess used to communicate with the object store.

failedOperationsCounter - The FailedObjectStoreOperationsCounter that is used to monitor the number of failed operations.

Method Detail

publish

public void publish()
             throws IOException

Synchronizes the files to S3.

Throws:

IOException - in case there were problems reading files from the disk.