Jira (BOLT-1316) The plan language should have a catch_errors functions

[Lucy Wyman (JIRA)]

Title: Message Title

Lucy Wyman updated an issue   Puppet Task Runner / BOLT-1316 The plan language should have a catch_errors functions Change By: Lucy Wyman Sometimes a plan wants to  execute a series of steps until one step fails then move on to some finalization or clean up actions. This can be handled by writing a subplan and calling {{run_plan}} with {{_catch_errors => true}} but sometimes this is less readable. {{catch_errors}} functions accept a list of types of errors to catch and then a block of code to run where if it errors the plan will continue executing. You cannot specify what to do when an error is raised. Proposed solution: A catch_errors function that executes a block of code returning the final value or an Error if one was thrown. * If an error is raised in the block it will be returned from the block, otherwise the result will be returned. * A {{return}} or {{break}} statement in a catch_errors block should break/return from the block not from the plan. Note: We should have a consistent way of catching returns in lambdas in Puppet behave 'normally' - Alex will talk to Henrik about it. with no special handling * We should document using this with {{case}} to create more reasonable error-handling, where case looks at the result and acts on different types of errors. {noformat} $result_or_error = catch_errors([kind1, kind2]) ||{   run_task(task1)   run_task(task2)   run_task(task3) } query_result_or_error = catch(errors) || {   puppetdb_query(....) } {noformat} Add Comment   This message was sent by Atlassian JIRA (v7.7.1#77002-sha1:e75ca93) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. To view this discussion on the web visit https://groups.google.com/d/msgid/puppet-bugs/JIRA.309066.1558041760000.43115.1560293280294%40Atlassian.JIRA. For more options, visit https://groups.google.com/d/optout.