Convert the Abandoned and MergeFail email classes to templates

Convert the AbandonedSender and MergeFailSender classes to use
file based velocity templates which an admin may edit.

Change-Id: I5eae65a46aea074ef25bfc259c013f9be91fdc2f

Documentation/config-mail.txt

@@ -25,6 +25,13 @@ are listed below.  Change emails are influenced by two additional templates,
 one to set the subject line, and one to set the footer which gets appended to
 all the change emails (see `ChangeSubject.vm` and `ChangeFooter.vm` below.)
 
+Abandoned.vm
+~~~~~~~~~~~~
+
+The `Abandoned.vm` template will determine the contents of the email related
+to a change being abandoned.  It is a `ChangeEmail`: see `ChangeSubject.vm` and
+`ChangeFooter.vm`.
+
 ChangeFooter.vm
 ~~~~~~~~~~~~~~~
 
@@ -50,6 +57,13 @@ The `Merged.vm` template will determine the contents of the email related to
 a change successfully merged to the head.  It is a `ChangeEmail`: see
 `ChangeSubject.vm` and `ChangeFooter.vm`.
 
+MergeFail.vm
+~~~~~~~~~~~~
+
+The `MergeFail.vm` template will determine the contents of the email related
+to a failure upon attempting to merge a change to the head.  It is a
+`ChangeEmail`: see `ChangeSubject.vm` and `ChangeFooter.vm`.
+
 
 Mail Variables and Methods
 --------------------------

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/SitePathInitializer.java

@@ -85,10 +85,12 @@ public class SitePathInitializer {
     extract(site.gerrit_sh, Init.class, "gerrit.sh");
     chmod(0755, site.gerrit_sh);
 
+    extractMailExample("Abandoned.vm");
     extractMailExample("ChangeFooter.vm");
     extractMailExample("ChangeSubject.vm");
     extractMailExample("Comment.vm");
     extractMailExample("Merged.vm");
+    extractMailExample("MergeFail.vm");
 
     if (!ui.isBatch()) {
       System.err.println();

gerrit-server/src/main/java/com/google/gerrit/server/mail/AbandonedSender.java

@@ -40,9 +40,6 @@ public class AbandonedSender extends ReplyToChangeSender {
 
   @Override
   protected void formatChange() throws EmailException {
-    appendText(getNameFor(fromId));
-    appendText(" has abandoned change " + change.getKey().abbreviate() + ":\n");
-    appendText("\n");
-    formatCoverLetter();
+    appendText(velocifyFile("Abandoned.vm"));
   }
 }

gerrit-server/src/main/java/com/google/gerrit/server/mail/MergeFailSender.java

@@ -38,15 +38,6 @@ public class MergeFailSender extends ReplyToChangeSender {
 
   @Override
   protected void formatChange() throws EmailException {
-    appendText("Change " + change.getKey().abbreviate());
-    if (patchSetInfo != null && patchSetInfo.getAuthor() != null
-        && patchSetInfo.getAuthor().getName() != null) {
-      appendText(" by ");
-      appendText(patchSetInfo.getAuthor().getName());
-    }
-    appendText(" FAILED to submit to ");
-    appendText(change.getDest().getShortName());
-    appendText(".\n\n");
-    formatCoverLetter();
+    appendText(velocifyFile("MergeFail.vm"));
   }
 }

gerrit-server/src/main/resources/com/google/gerrit/server/mail/Abandoned.vm

@@ -0,0 +1,40 @@
+## Copyright (C) 2010 The Android Open Source Project
+##
+## Licensed 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.
+##
+##
+## Template Type:
+## -------------
+## This is a velocity mail template, see: http://velocity.apache.org and the
+## gerrit-docs:config-mail.txt for more info on modifying gerrit mail templates.
+##
+## Template File Names and extensions:
+## ----------------------------------
+## Gerrit will use templates ending in ".vm" but will ignore templates ending
+## in ".vm.example".  If a .vm template does not exist, the default internal
+## gerrit template which is the same as the .vm.example will be used.  If you
+## want to override the default template, copy the .vm.exmaple file to a .vm
+## file and edit it appropriately.
+##
+## This Template:
+## --------------
+## The Abandoned.vm template will determine the contents of the email related
+## to a change being abandoned.   It is a ChangeEmail: see ChangeSubject.vm and
+## ChangeFooter.vm.
+##
+$fromName has abandoned change $changeId.abbreviate():
+
+#if ($coverLetter)
+$coverLetter
+
+#end

gerrit-server/src/main/resources/com/google/gerrit/server/mail/MergeFail.vm

@@ -0,0 +1,41 @@
+## Copyright (C) 2010 The Android Open Source Project
+##
+## Licensed 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.
+##
+##
+## Template Type:
+## -------------
+## This is a velocity mail template, see: http://velocity.apache.org and the
+## gerrit-docs:config-mail.txt for more info on modifying gerrit mail templates.
+##
+## Template File Names and extensions:
+## ----------------------------------
+## Gerrit will use templates ending in ".vm" but will ignore templates ending
+## in ".vm.example".  If a .vm template does not exist, the default internal
+## gerrit template which is the same as the .vm.example will be used.  If you
+## want to override the default template, copy the .vm.exmaple file to a .vm
+## file and edit it appropriately.
+##
+## This Template:
+## --------------
+## The MergeFail.vm template will determine the contents of the email related
+## to a failure upon attempting to merge a change to the head.  It is a
+## ChangeEmail: see ChangeSubject.vm and ChangeFooter.vm.
+##
+Change $change.key.abbreviate()#if ($patchSetInfo.author.name)
+ by $patchSetInfo.author.name#end FAILED to submit to ${change.dest.shortName}.
+
+#if ($email.coverLetter)
+$email.coverLetter
+
+#end