incorporating the logic to infer e-mail address from SCM.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@7522 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/tasks/MailAddressResolver.java

+package hudson.tasks;
+
+import hudson.ExtensionPoint;
+import hudson.Plugin;
+import hudson.scm.SCM;
+import hudson.scm.CVSSCM;
+import hudson.scm.SubversionSCM;
+import hudson.model.User;
+import hudson.model.AbstractProject;
+
+import java.util.List;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.regex.Pattern;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+/**
+ * Infers e-mail addresses for the user when none is specified.
+ *
+ * <p>
+ * This is an extension point of Hudson. Plugins tha contribute new implementation
+ * of this class must register it to {@link #LIST}. The typical way to do this is:
+ *
+ * <pre>
+ * class PluginImpl extends {@link Plugin} {
+ *   public void start() {
+ *     ...
+ *     MailAddressResolver.LIST.add(new MyMailAddressResolver());
+ *   }
+ * }
+ * </pre>
+ *
+ * @author Kohsuke Kawaguchi
+ * @sine 1.192
+ */
+public abstract class MailAddressResolver implements ExtensionPoint {
+    /**
+     * Infers e-mail address of the given user.
+     *
+     * <p>
+     * This method is called when a {@link User} without explicitly configured e-mail
+     * address is used, as an attempt to infer e-mail address.
+     *
+     * <p>
+     * The normal strategy is to look at {@link User#getProjects() the projects that the user
+     * is participating}, then use the repository information to infer the e-mail address.
+     *
+     * <p>
+     * When multiple resolvers are installed, they are consulted in order and
+     * the search will be over when an address is inferred by someone.
+     *
+     * <p>
+     * Since {@link MailAddressResolver} is singleton, this method can be invoked concurrently
+     * from multiple threads.
+     *
+     * @return
+     *      null if the inference failed.
+     */
+    public abstract String findMailAddressFor(User u);
+    
+    public static String resolve(User u) {
+        for (MailAddressResolver r : LIST) {
+            String email = r.findMailAddressFor(u);
+            if(email!=null) return email;
+        }
+        return null;
+    }
+
+
+    /**
+     * All registered {@link MailAddressResolver} implementations.
+     */
+    public static final List<MailAddressResolver> LIST = new CopyOnWriteArrayList<MailAddressResolver>();
+
+    static {
+        // register built-in instances
+        LIST.add(new DefaultAddressResolver());
+    }
+
+    /**
+     * {@link MailAddressResolver} implemenations that cover well-known major public sites.
+     *
+     * <p>
+     * Since this has low UI visibility, we are open to having a large number of rules here.
+     * If you'd like to add one, please contribute more rules.
+     */
+    public static class DefaultAddressResolver extends MailAddressResolver {
+        public String findMailAddressFor(User u) {
+            for (AbstractProject<?,?> p : u.getProjects()) {
+                SCM scm = p.getScm();
+                if (scm instanceof CVSSCM) {
+                    CVSSCM cvsscm = (CVSSCM) scm;
+                    
+                    String s = findMailAddressFor(u,cvsscm.getCvsRoot());
+                    if(s!=null) return s;
+                }
+                if (scm instanceof SubversionSCM) {
+                    SubversionSCM svn = (SubversionSCM) scm;
+                    for (SubversionSCM.ModuleLocation loc : svn.getLocations()) {
+                        String s = findMailAddressFor(u,loc.remote);
+                        if(s!=null) return s;
+                    }
+                }
+            }
+
+            // didn't hit any known rules
+            return null;
+        }
+
+        /**
+         *
+         * @param scm
+         *      String that represents SCM connectivity.
+         */
+        protected String findMailAddressFor(User u, String scm) {
+            for (Map.Entry<Pattern, String> e : RULE_TABLE.entrySet())
+                if(e.getKey().matcher(scm).matches())
+                    return u.getId()+e.getValue();
+            return null;
+        }
+
+        private static final Map<Pattern,String/*suffix*/> RULE_TABLE = new HashMap<Pattern, String>();
+
+        static {
+            {// java.net
+                Pattern svnurl = Pattern.compile("https://[^.]+.dev.java.net/svn/([^/]+)(/.*)?");
+
+                String username = "([A-Za-z0-9_\\-])+";
+                String host = "(.*.dev.java.net|kohsuke.sfbay.*)";
+                Pattern cvsUrl = Pattern.compile(":pserver:"+username+"@"+host+":/cvs");
+
+                RULE_TABLE.put(svnurl,"@dev.java.net");
+                RULE_TABLE.put(cvsUrl,"@dev.java.net");
+            }
+
+            {// source forge
+                Pattern cvsUrl = Pattern.compile(":(pserver|ext):([^@]+)@([^.]+).cvs.(sourceforge|sf).net:.+");
+                RULE_TABLE.put(cvsUrl,"@users.sourceforge.net");
+                // SVN URL?
+            }
+
+            // TODO: read some file under $HUDSON_HOME?
+        }
+
+    }
+}

core/src/main/java/hudson/tasks/Mailer.java

@@ -386,7 +386,8 @@ public class Mailer extends Publisher {
             }
 
             public UserProperty newInstance(User user) {
-                return new UserProperty(null);
+                
+                return new UserProperty(MailAddressResolver.resolve(user));
             }
 
             public UserProperty newInstance(StaplerRequest req) throws FormException {