tApacheLogInput – Docs for ESB 5.x

Component family

File/Input

Function

tApacheLogInput reads the
access-log file for an Apache HTTP server.

Purpose

tApachLogInput helps to
effectively manage the Apache HTTP Server,. It is necessary to get
feedback about the activity and performance of the server as well as
any problems that may be occurring.

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 the properties are stored. The fields that follow are
completed automatically using the data retrieved.

Schema and Edit
Schema

A schema is a row description, it defines the number of fields to be processed and
passed on to the next component. The schema is either Built-in or stored remotely in the
Repository.

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

In the context of tApacheLogInput usage, the schema is
read-only.

Built-in: You can create the
schema and store it locally for this component. Related topic: see
Talend Studio
User Guide.

Repository: You have already
created and stored the schema in the Repository. You can reuse it in
various projects and Job flowcharts. Related topic: see
Talend Studio
User Guide.

File Name

Name of the file and/or the variable to be processed.

For further information about how to define and use a variable in
a Job, see Talend Studio
User Guide.

Die on error

Select this check box to stop the execution of the Job when an
error occurs. Clear the check box to skip the row on error and
complete the process for error-free rows. If needed, you can collect
the rows on error using a Row >
Reject link.

Advanced settings

Encoding

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

tStatCatcher Statistics

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

Global Variables

NB_LINE: the number of rows processed. This is an After
variable and it returns an integer.

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.

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

tApacheLogInput can be used with other components or as
a standalone component. It allows you to create a data flow using a
Row > Main connection, or to
create a reject flow to filter specified data using a Row > Reject connection. For an
example of how to use these two links, see Scenario 2: Extracting correct and erroneous data from an XML field in a delimited
file.

Limitation

n/a