1 <?xml version="1.0"?>

     2 <project name="SF-RETRY" default="all" xmlns:hlm="http://www.nokia.com/helium">

     3 

     4     <dirname property="sf.retry.dir" file="${ant.file.SF-RETRY}"/>

     5 

     6     <macrodef name="retry">

     7         <attribute name="tries" default="3" description="How many times to try the nested script"/>

     8         <attribute name="uniquename" description="An identifier specific to this thread, or a constant for single-threaded contexts"/>

     9         <attribute name="failonerror" default="true" description="Set to false to avoid an abort after all attempts"/>

    10         <element name="sequential" description="The tasks to retry"/>

    11         <element name="cleanup" optional="true" description="Tasks to run to clean up after a failed try"/>

    12         <sequential>

    13             <trycatch reference="exception.@{uniquename}.ref" property="exception.@{uniquename}.prop">

    14                 <try>

    15                     <sequential/>

    16                 </try>

    17                 <catch>

    18                     <math result="newtries.@{uniquename}" operation="-" operand2="@{tries}" operand1="1" datatype="int"/>

    19                     <if>

    20                         <not>

    21                             <equals arg1="${newtries.@{uniquename}}" arg2="0"/>

    22                         </not>

    23                         <then>

    24                             <!-- Clean up ready to try again -->

    25                             <cleanup/>

    26                             <sleep seconds="1"/>

    27                             <!-- Recurse (via helper) -->

    28                             <retry-helper tries="${newtries.@{uniquename}}" uniquename="@{uniquename}" failonerror="@{failonerror}">

    29                                 <sequence>

    30                                     <sequential/>

    31                                 </sequence>

    32                                 <cleanup-helper>

    33                                     <cleanup/>

    34                                 </cleanup-helper>

    35                             </retry-helper>

    36                         </then>

    37                         <else>

    38                             <if>

    39                                 <istrue value="@{failonerror}"/>

    40                                 <then>

    41                                     <throw refid="exception.@{uniquename}.ref"/>

    42                                 </then>

    43                             </if>

    44                         </else>

    45                     </if>

    46                 </catch>

    47             </trycatch>

    48         </sequential>

    49     </macrodef>

    50     <macrodef name="retry-helper" description="Don't use this directly, use 'retry'">

    51         <attribute name="tries"/>

    52         <attribute name="uniquename"/>

    53         <attribute name="failonerror"/>

    54         <element name="sequence"/>

    55         <element name="cleanup-helper"/>

    56         <sequential>

    57             <retry tries="@{tries}" uniquename="@{uniquename}" failonerror="@{failonerror}">

    58                 <sequential>

    59                     <sequence/>

    60                 </sequential>

    61                 <cleanup>

    62                     <cleanup-helper/>

    63                 </cleanup>

    64             </retry>

    65         </sequential>

    66     </macrodef>

    67 

    68 </project>