Package com.ibm.fhir.bucket.cos

Class CosClient

java.lang.Object

com.ibm.fhir.bucket.cos.CosClient

public class CosClient
extends Object

Encapsulates the AmazonS3 client for interaction with IBM Cloud Object Storage (COS)

Constructor Summary

Constructors

Constructor	Description
CosClient(Properties cosProperties)	Public constructor

Method Summary

Modifier and Type	Method	Description
void	process(String bucketName, String itemName, Consumer<BufferedReader> consumer)	Read and process the object, feeding the content to the given consumer as a BufferedReader.
<T> T	read(String bucketName, String itemName, Function<PushbackInputStream,T> fn)	Read the object using the given function
void	scan(String bucketName, String pathPrefix, Function<String,FileType> fileTyper, Consumer<CosItem> consumer)	Scan the COS bucket, feeding each returned item to the given consumer
void	signalStop()	Tell the scanner to stop.

Methods inherited from class java.lang.Object

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

Constructor Detail

CosClient

public CosClient(Properties cosProperties)

Public constructor

Parameters:

cosProperties -

Method Detail

signalStop

public void signalStop()

Tell the scanner to stop. Can be used to get scan() to finish early

read

public <T> T read(String bucketName,
                  String itemName,
                  Function<PushbackInputStream,T> fn)

Read the object using the given function

Type Parameters:

T -

Parameters:

bucketName -

itemName -

fn -

Returns:

process

public void process(String bucketName,
                    String itemName,
                    Consumer<BufferedReader> consumer)

Read and process the object, feeding the content to the given consumer as a BufferedReader. We keep control of the stream, and close it when the consumer accept call returns

Parameters:

bucketName -

itemName -

consumer -

scan

public void scan(String bucketName,
                 String pathPrefix,
                 Function<String,FileType> fileTyper,
                 Consumer<CosItem> consumer)

Scan the COS bucket, feeding each returned item to the given consumer

Parameters:

bucketName -

fileType - function to derive fileType from the item key value

consumer - target for each non-empty CosItem we find in the bucket