From 1d42338bb7495912121556b0fdb06b04f1d38082 Mon Sep 17 00:00:00 2001
From: Brett Leslie Porter <brett@apache.org>
Date: Thu, 6 Oct 2005 09:40:13 +0000
Subject: [PATCH] PR: MNG-1109 better handling for timeout and other transfer
 failed exceptions that are recoverable (ie metadata), and then blacklist the
 repository for performance.

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@306560 13f79535-47bb-0310-9956-ffa450edef68
---
 .../resources/META-INF/plexus/components.xml  |  5 ++++
 .../artifact/manager/DefaultWagonManager.java | 22 ++++++++++------
 .../repository/DefaultArtifactRepository.java | 12 +++++++++
 .../DefaultArtifactRepositoryFactory.java     | 25 +++++++++++++++++--
 .../DefaultRepositoryMetadataManager.java     | 13 +++++++---
 .../resources/META-INF/plexus/components.xml  |  5 ++++
 .../repository/ArtifactRepository.java        |  4 +++
 7 files changed, 74 insertions(+), 12 deletions(-)

diff --git a/maven-artifact-ant/src/main/resources/META-INF/plexus/components.xml b/maven-artifact-ant/src/main/resources/META-INF/plexus/components.xml
index caf0a94488..074b8fafea 100644
--- a/maven-artifact-ant/src/main/resources/META-INF/plexus/components.xml
+++ b/maven-artifact-ant/src/main/resources/META-INF/plexus/components.xml
@@ -139,6 +139,11 @@
       <!--
             <implementation>org.apache.maven.artifact.manager.DefaultWagonManager</implementation>
       -->
+      <requirements>
+        <requirement>
+          <role>org.apache.maven.artifact.repository.ArtifactRepositoryFactory</role>
+        </requirement>
+      </requirements>
     </component>
 
     <!--
diff --git a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/manager/DefaultWagonManager.java b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/manager/DefaultWagonManager.java
index d05cf5afeb..004a1529cb 100644
--- a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/manager/DefaultWagonManager.java
+++ b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/manager/DefaultWagonManager.java
@@ -19,6 +19,7 @@ package org.apache.maven.artifact.manager;
 import org.apache.maven.artifact.Artifact;
 import org.apache.maven.artifact.metadata.ArtifactMetadata;
 import org.apache.maven.artifact.repository.ArtifactRepository;
+import org.apache.maven.artifact.repository.ArtifactRepositoryFactory;
 import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
 import org.apache.maven.artifact.repository.DefaultArtifactRepository;
 import org.apache.maven.wagon.ConnectionException;
@@ -72,6 +73,8 @@ public class DefaultWagonManager
 
     private boolean online = true;
 
+    private ArtifactRepositoryFactory repositoryFactory;
+
     public Wagon getWagon( String protocol )
         throws UnsupportedProtocolException
     {
@@ -253,7 +256,15 @@ public class DefaultWagonManager
 
         ArtifactRepositoryPolicy policy = artifact.isSnapshot() ? repository.getSnapshots() : repository.getReleases();
 
-        if ( policy.isEnabled() )
+        if ( !policy.isEnabled() )
+        {
+            getLogger().debug( "Skipping disabled repository " + repository.getId() );
+        }
+        else if ( repository.isBlacklisted() )
+        {
+            getLogger().debug( "Skipping blacklisted repository " + repository.getId() );
+        }
+        else
         {
             getLogger().debug( "Trying repository " + repository.getId() );
             getRemoteFile( repository, artifact.getFile(), remotePath, downloadMonitor, policy.getChecksumPolicy() );
@@ -261,10 +272,6 @@ public class DefaultWagonManager
 
             artifact.setResolved( true );
         }
-        else
-        {
-            getLogger().debug( "Skipping disabled repository " + repository.getId() );
-        }
     }
 
     public void getArtifactMetadata( ArtifactMetadata metadata, ArtifactRepository repository, File destination,
@@ -289,8 +296,9 @@ public class DefaultWagonManager
         ArtifactRepository mirror = getMirror( repository.getId() );
         if ( mirror != null )
         {
-            repository = new DefaultArtifactRepository( mirror.getId(), mirror.getUrl(), repository.getLayout(),
-                                                        repository.getSnapshots(), repository.getReleases() );
+            repository = repositoryFactory.createArtifactRepository( mirror.getId(), mirror.getUrl(),
+                                                                     repository.getLayout(), repository.getSnapshots(),
+                                                                     repository.getReleases() );
         }
 
         String protocol = repository.getProtocol();
diff --git a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepository.java b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepository.java
index bd32bfea70..b3051f6e62 100644
--- a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepository.java
+++ b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepository.java
@@ -40,6 +40,8 @@ public class DefaultArtifactRepository
 
     private boolean uniqueVersion;
 
+    private boolean blacklisted;
+
     /**
      * Create a local repository or a test repository.
      *
@@ -139,4 +141,14 @@ public class DefaultArtifactRepository
     {
         return uniqueVersion;
     }
+
+    public boolean isBlacklisted()
+    {
+        return blacklisted;
+    }
+
+    public void setBlacklisted( boolean blacklisted )
+    {
+        this.blacklisted = blacklisted;
+    }
 }
diff --git a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepositoryFactory.java b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepositoryFactory.java
index f74fa65318..d1696fe815 100644
--- a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepositoryFactory.java
+++ b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/DefaultArtifactRepositoryFactory.java
@@ -18,6 +18,9 @@ package org.apache.maven.artifact.repository;
 
 import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;
 
+import java.util.HashMap;
+import java.util.Map;
+
 /**
  * @author jdcasey
  */
@@ -29,8 +32,11 @@ public class DefaultArtifactRepositoryFactory
 
     private String globalChecksumPolicy;
 
+    private final Map artifactRepositories = new HashMap();
+
     public ArtifactRepository createDeploymentArtifactRepository( String id, String url,
-                                                        ArtifactRepositoryLayout repositoryLayout, boolean uniqueVersion )
+                                                                  ArtifactRepositoryLayout repositoryLayout,
+                                                                  boolean uniqueVersion )
     {
         return new DefaultArtifactRepository( id, url, repositoryLayout, uniqueVersion );
     }
@@ -40,6 +46,16 @@ public class DefaultArtifactRepositoryFactory
                                                         ArtifactRepositoryPolicy snapshots,
                                                         ArtifactRepositoryPolicy releases )
     {
+        if ( artifactRepositories.containsKey( id ) )
+        {
+            ArtifactRepository repository = (ArtifactRepository) artifactRepositories.get( id );
+            // TODO: this should be an if there are duplicates?
+            if ( repository.getUrl().equals( url ) )
+            {
+                return repository;
+            }
+        }
+
         if ( snapshots == null )
         {
             snapshots = new ArtifactRepositoryPolicy();
@@ -62,7 +78,12 @@ public class DefaultArtifactRepositoryFactory
             releases.setChecksumPolicy( globalChecksumPolicy );
         }
 
-        return new DefaultArtifactRepository( id, url, repositoryLayout, snapshots, releases );
+        DefaultArtifactRepository repository = new DefaultArtifactRepository( id, url, repositoryLayout, snapshots,
+                                                                              releases );
+
+        artifactRepositories.put( id, repository );
+
+        return repository;
     }
 
     public void setGlobalUpdatePolicy( String updatePolicy )
diff --git a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/metadata/DefaultRepositoryMetadataManager.java b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/metadata/DefaultRepositoryMetadataManager.java
index 924d28ca6b..3bdd690de4 100644
--- a/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/metadata/DefaultRepositoryMetadataManager.java
+++ b/maven-artifact-manager/src/main/java/org/apache/maven/artifact/repository/metadata/DefaultRepositoryMetadataManager.java
@@ -70,6 +70,10 @@ public class DefaultRepositoryMetadataManager
                 {
                     getLogger().debug( "Skipping disabled repository " + repository.getId() );
                 }
+                else if ( repository.isBlacklisted() )
+                {
+                    getLogger().debug( "Skipping blacklisted repository " + repository.getId() );
+                }
                 else
                 {
                     File file = new File( localRepository.getBasedir(),
@@ -111,7 +115,7 @@ public class DefaultRepositoryMetadataManager
             ArtifactRepositoryPolicy policy = metadata.isSnapshot() ? repository.getSnapshots()
                 : repository.getReleases();
 
-            if ( policy.isEnabled() )
+            if ( policy.isEnabled() && !repository.isBlacklisted() )
             {
                 if ( loadMetadata( metadata, repository, localRepository, previousMetadata ) )
                 {
@@ -260,7 +264,6 @@ public class DefaultRepositoryMetadataManager
 
     private void resolveAlways( ArtifactMetadata metadata, ArtifactRepository repository, File file,
                                 String checksumPolicy )
-        throws ArtifactMetadataRetrievalException
     {
         if ( !wagonManager.isOnline() )
         {
@@ -284,7 +287,11 @@ public class DefaultRepositoryMetadataManager
         }
         catch ( TransferFailedException e )
         {
-            throw new ArtifactMetadataRetrievalException( "Unable to retrieve metadata", e );
+            getLogger().warn( metadata + " could not be found on repository: " + repository.getId() +
+                " due to an error: " + e.getCause().getMessage() );
+            getLogger().info( "Repository '" + repository.getId() + "' will be blacklisted" );
+            getLogger().debug( "Exception", e );
+            repository.setBlacklisted( true );
         }
     }
 
diff --git a/maven-artifact-manager/src/main/resources/META-INF/plexus/components.xml b/maven-artifact-manager/src/main/resources/META-INF/plexus/components.xml
index ebb4dc6b6f..dbe1e7f163 100644
--- a/maven-artifact-manager/src/main/resources/META-INF/plexus/components.xml
+++ b/maven-artifact-manager/src/main/resources/META-INF/plexus/components.xml
@@ -8,6 +8,11 @@
     <component>
       <role>org.apache.maven.artifact.manager.WagonManager</role>
       <implementation>org.apache.maven.artifact.manager.DefaultWagonManager</implementation>
+      <requirements>
+        <requirement>
+          <role>org.apache.maven.artifact.repository.ArtifactRepositoryFactory</role>
+        </requirement>
+      </requirements>
     </component>
 
     <component>
diff --git a/maven-artifact/src/main/java/org/apache/maven/artifact/repository/ArtifactRepository.java b/maven-artifact/src/main/java/org/apache/maven/artifact/repository/ArtifactRepository.java
index 758414f99f..d28c96da8c 100644
--- a/maven-artifact/src/main/java/org/apache/maven/artifact/repository/ArtifactRepository.java
+++ b/maven-artifact/src/main/java/org/apache/maven/artifact/repository/ArtifactRepository.java
@@ -51,4 +51,8 @@ public interface ArtifactRepository
     String getKey();
 
     boolean isUniqueVersion();
+
+    void setBlacklisted( boolean blackListed );
+
+    boolean isBlacklisted();
 }