Package ai.preferred.venom.storage

Class MysqlFileManager

java.lang.Object

ai.preferred.venom.storage.MysqlFileManager

All Implemented Interfaces:

FileManager<Integer>, AutoCloseable

public class MysqlFileManager
extends Object
implements FileManager<Integer>

This class implements a FileManager that writes response content to a file on the file system and a record in MySQL database pointing to the record and allows retrieving the file using an id or request.

Author:

Maksim Tkachenko, Truong Quoc Tuan, Ween Jiann Lee

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MysqlFileManager.CompletedThreadedCallback	A callback wrapper for to run complete multithreaded.

Constructor Summary

Constructors

Constructor	Description
MysqlFileManager(String url, String table, String username, String password, File storagePath)	Constructs an instance of MysqlFileManager.
MysqlFileManager(String url, String table, String username, String password, String storageDir)	Constructs an instance of MysqlFileManager.

Method Summary

Modifier and Type	Method	Description
void	close()
Record<Integer>	get(Request request)	Returns latest record matching request.
Record<Integer>	get(Integer id)	Returns record by the internal record id.
Callback	getCallback()	Get callback upon completion of request.
String	put(Request request, Response response)	Puts record into database.

Methods inherited from class java.lang.Object

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

Constructor Detail

MysqlFileManager

public MysqlFileManager(String url,
                        String table,
                        String username,
                        String password,
                        String storageDir)

Constructs an instance of MysqlFileManager.

Parameters:

url - a JDBC URL to the database

table - table in the database to use for record storage

username - username for the database

password - password for the database

storageDir - storage directory to use for content storage

MysqlFileManager

public MysqlFileManager(String url,
                        String table,
                        String username,
                        String password,
                        File storagePath)

Constructs an instance of MysqlFileManager.

Parameters:

url - a JDBC URL to the database

table - name of table in the database to use for record storage

username - username for the database

password - password for the database

storagePath - storage path to use for content storage

Method Detail

getCallback

public final Callback getCallback()

Description copied from interface: FileManager

Get callback upon completion of request.

Please note that blocking callbacks will significantly reduce the rate at which request are processed. Please implement your own executors on I/O blocking callbacks.

Specified by:

getCallback in interface FileManager<Integer>

Returns:

Callback for FileManager

put

public final String put(Request request,
                        Response response)
                 throws StorageException

Description copied from interface: FileManager

Puts record into database.

Specified by:

put in interface FileManager<Integer>

Parameters:

request - request

response - Response

Returns:

id of record

Throws:

StorageException - throws StorageException

get

public final Record<Integer> get(Integer id)
                          throws StorageException

Description copied from interface: FileManager

Returns record by the internal record id.

Specified by:

get in interface FileManager<Integer>

Parameters:

id - record id

Returns:

stored record

Throws:

StorageException - throws StorageException

get

public final Record<Integer> get(Request request)
                          throws StorageException

Description copied from interface: FileManager

Returns latest record matching request.

Specified by:

get in interface FileManager<Integer>

Parameters:

request - request

Returns:

stored record

Throws:

StorageException - throws StorageException

close

public final void close()
                 throws SQLException

Specified by:

close in interface AutoCloseable

Throws:

SQLException