tFTPFileExist - 6.3

Talend Open Studio for Big Data Components Reference Guide

EnrichVersion
6.3
EnrichProdName
Talend Open Studio for Big Data
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Function

tFTPFileExist checks if a file exists on an FTP server.

Purpose

tFTPFileExist allows you to check if a file exists on an FTP server.

tFTPFileExist properties

Component family

Internet/FTP

 

Basic settings

Property Type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are available in any of the Talend solutions.

 

 

Built-in: No property data stored centrally.

 

 

Repository: Select the Repository file where properties are stored. The following fields are pre-filled in using fetched data.

 

Use an existing connection/Component List

Select this check box and in the Component List click the relevant connection component to reuse the connection details you already defined.

 

Host

FTP IP address.

 

Port

The FTP server listening port number.

 

Username and Password (or Private key)

User authentication information.

To enter the password, click the [...] button next to the password field, and then in the pop-up dialog box enter the password between double quotes and click OK to save the settings.

 

Remote directory

Path to the remote directory.

 

File Name

Name of the file you want to check exists.

 

SFTP Support

Select this check box to connect to the FTP server via an SFTP connection. The following properties will be available:

Authentication method: Select the SFTP authentication method, either Public key or Password.

  • Public key: Enter the path to the private key and the passphrase for the key in the Private key and Key Passphrase fields correspondingly.

  • Password: Enter the password required.

Filename encoding: Select this check box to set the encoding used to convert file names from Strings to bytes. It should be the same encoding used on the SFTP server.

Note

If the SFTP server's version is greater than 3, the encoding should be UTF-8, or else an error occurs.

 

Connection Mode

Select the SFTP connection mode you want to use:

Active: You determine the connection port to use to allow data transfer.

Passive: the FTP server determines the connection port to use to allow data transfer.

 

Encoding

Select an encoding type from the list, or select Custom and define it manually. This field is compulsory for DB data handling.

Advanced settings

Use Socks Proxy

Select this check box if you want to use a proxy. Then, set the Host, Port, User and Password proxy fields.

 

Ignore Failure At Quit (FTP)

Select this check box to ignore library closing errors or FTP closing errors.

 

tStatCatcher Statistics

Select this check box to gather the Job processing metadata at a Job level as well as at each component level.

Global Variables

ERROR_MESSAGE: the error message generated by the component when an error occurs. This is an After variable and it returns a string. This variable functions only if the Die on error check box is cleared, if the component has this check box.

EXISTS: the result of whether a specified file exists. This is a Flow variable and it returns a boolean.

FILENAME: the name of the file processed. This is an After variable and it returns a string.

A Flow variable functions during the execution of a component while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl + Space to access the variable list and choose the variable to use from it.

For further information about variables, see Talend Studio User Guide.

Usage

This component is typically used as a single-component sub-job but can also be used with other components.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Limitation

Due to license incompatibility, one or more JARs required to use this component are not provided. You can install the missing JARs for this particular component by clicking the Install button on the Component tab view. You can also find out and add all missing JARs easily on the Modules tab in the Integration perspective of your studio. For details, see the article Installing External Modules on Talend Help Center (https://help.talend.com) how to configure the Studio in the Talend Installation and Upgrade Guide.

Related scenario

For a related scenario using a different protocol, see Scenario: handling a file using SCP.