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 ------
 Understanding Consumers in Apache Archiva
 ------
 Maria Odea Ching
 Olivier Lamy
 ------
 2011-09-29
 ------

~~ Licensed to the Apache Software Foundation (ASF) under one
~~ or more contributor license agreements.  See the NOTICE file
~~ distributed with this work for additional information
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~~ to you under the Apache License, Version 2.0 (the
~~ "License"); you may not use this file except in compliance
~~ with the License.  You may obtain a copy of the License at
~~
~~   http://www.apache.org/licenses/LICENSE-2.0
~~
~~ Unless required by applicable law or agreed to in writing,
~~ software distributed under the License is distributed on an
~~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
~~ KIND, either express or implied.  See the License for the
~~ specific language governing permissions and limitations
~~ under the License.

~~ NOTE: For help with the syntax of this file, see:
~~ http://maven.apache.org/guides/mini/guide-apt-format.html

Understanding Consumers in Apache Archiva

 Archiva makes use of the concept of consumers. Consumers are components which consumes or processes an artifact. There are 2 types
 of consumers in Archiva: repository content consumers and database consumers. 

* Repository Content Consumers
  
  The repository content consumers consume or process artifacts during repository scanning. For every artifact found in the repository,
  each consumer processes them. There are 8 available repository content consumers which can be configured in the Repository Scanning
  page. These are:
  
  * <auto-remove> - Removes files in the repository being scanned if the file type matches any of the configured file types to be removed.  
  
  * <auto-rename> - Automatically renames common artifact mistakes. 
  
  * <create-missing-checksums> - Creates the md5 and sha1 checksum files of the artifact if there are none available in the repository.  
  
  * <index-content> - Adds the content of the artifact (specifically the pom) to the index, allowing the artifact to be searched in Archiva.
  
  * <metadata-updater> - Updates artifact metadata files depending on the content of the repository.  
  
  * <repository-purge> - Removes old snapshots from the repository either by the number of days old or by the retention count.
  
  * <update-db-artifact> - Adds the artifact (in the form of ArchivaArtifact) to the database.
  
  * <validate-checksums> - Validates the checksum files of the artifact.