trigger delete fails when feed deletion fails

- add --force flag to force trigger deletion

Author: mdeuser

commands/flags.go

@@ -67,6 +67,7 @@ type FlagsStruct struct {
 		detail     bool
 		format     string
 		nameSort   bool // sorts list alphabetically by entity name
+		force      bool
 	}
 
 	property struct {

commands/trigger.go

@@ -20,6 +20,7 @@ package commands
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	"github.com/apache/openwhisk-cli/wski18n"
 	"github.com/apache/openwhisk-client-go/whisk"
@@ -286,6 +287,30 @@ var triggerDeleteCmd = &cobra.Command{
 				err = configureFeed(qualifiedName.GetEntityName(), fullFeedName, getParameters(Flags.common.param, false, false))
 				if err != nil {
 					whisk.Debug(whisk.DbgError, "configureFeed(%s, %s) failed: %s\n", qualifiedName.GetEntityName(), fullFeedName, err)
+
+					// If the trigger feed does not exist, it's deleted! This error message will look like
+					//      "could not find trigger /NAMESPACE_ID/TRIGGER_NAME in the database"
+					// OR if the feed action is not present, there's no way to clean up the feed
+					//     "The requested resource does not exist"
+					// likewise, if the feed action has no code, there's no way to clean up the feed
+					//     "Missing main/no code to execute"
+					if strings.Contains(err.Error(), "could not find trigger") {
+						whisk.Debug(whisk.DbgWarn, "trigger feed is already deleted for trigger %s\n", qualifiedName.GetEntityName())
+					} else if strings.Contains(err.Error(), "The requested resource does not exist") {
+						whisk.Debug(whisk.DbgWarn, "trigger feed action '%s' does not exist\n", fullFeedName)
+					} else if strings.Contains(err.Error(), "no code to execute") {
+						whisk.Debug(whisk.DbgWarn, "trigger feed action '%s' does not contain valid code\n", fullFeedName)
+					} else {
+						errStr := wski18n.T("Unable to delete trigger '{{.name}}': {{.err}}",
+							map[string]interface{}{"name": qualifiedName.GetEntityName(), "err": err})
+
+						if !Flags.common.force {
+							werr := whisk.MakeWskErrorFromWskError(errors.New(errStr), err, whisk.EXIT_CODE_ERR_GENERAL, whisk.DISPLAY_MSG, whisk.NO_DISPLAY_USAGE)
+							return werr
+						} else {
+							whisk.Debug(whisk.DbgInfo, "trigger delete is forced despite feed deletion failure\n")
+						}
+					}
 				}
 
 				Flags.common.param = origParams
@@ -370,7 +395,7 @@ func configureFeed(triggerName string, feedName string, parameters interface{})
 	if err != nil {
 		whisk.Debug(whisk.DbgError, "Invoke of action '%s' failed: %s\n", feedName, err)
 		errStr := wski18n.T(FEED_CONFIGURATION_FAILURE, map[string]interface{}{"feedname": feedName, "trigname": triggerName, "err": err})
-		err = whisk.MakeWskErrorFromWskError(errors.New(errStr), err, whisk.EXIT_CODE_ERR_GENERAL, whisk.DISPLAY_MSG, whisk.DISPLAY_USAGE)
+		err = whisk.MakeWskError(errors.New(errStr), whisk.EXIT_CODE_ERR_GENERAL, whisk.DISPLAY_MSG, whisk.NO_DISPLAY_USAGE)
 	} else {
 		whisk.Debug(whisk.DbgInfo, "Successfully configured trigger feed via feed action '%s'\n", feedName)
 	}
@@ -405,6 +430,8 @@ func init() {
 
 	triggerGetCmd.Flags().BoolVarP(&Flags.trigger.summary, "summary", "s", false, wski18n.T("summarize trigger details; parameters with prefix \"*\" are bound"))
 
+	triggerDeleteCmd.Flags().BoolVarP(&Flags.common.force, "force", "f", false, wski18n.T("force trigger deletion even when feed deletion fails"))
+
 	triggerFireCmd.Flags().StringSliceVarP(&Flags.common.param, "param", "p", []string{}, wski18n.T("parameter values in `KEY VALUE` format"))
 	triggerFireCmd.Flags().StringVarP(&Flags.common.paramFile, "param-file", "P", "", wski18n.T("`FILE` containing parameter values in JSON format"))
 
@@ -477,6 +504,7 @@ func (t *Trigger) Create(Client *whisk.Client, args []string) error {
 			printFailedBlockingInvocationResponse(*feedName, false, res, err)
 
 			reason := wski18n.T(FEED_CONFIGURATION_FAILURE, map[string]interface{}{"feedname": feedName.GetFullQualifiedName(), "err": err})
+
 			errStr := wski18n.T("Unable to create trigger '{{.name}}': {{.err}}",
 				map[string]interface{}{"name": trigger.Name, "err": reason})
 			werr := whisk.MakeWskErrorFromWskError(errors.New(errStr), err, whisk.EXIT_CODE_ERR_GENERAL, whisk.DISPLAY_MSG, whisk.NO_DISPLAY_USAGE)

tests/src/dat/feed-action-fails-delete.js

@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+function main(params) {
+    var bodyobj = params || {};
+    var sc = params.statusCode || 412;
+    bodystr = JSON.stringify(bodyobj);
+    var resp = {}
+    if (sc >=200 && sc <= 299) {
+        return {
+            statusCode: sc,
+            headers: { 'Content-Type': 'application/json' },
+            body: bodystr,
+        };
+    }
+    return {
+        error: {
+            error: 'Some sort of error string',
+            message: 'Some sort of error message',
+            statusCode: sc,
+            headers: { 'Content-Type': 'application/json' },
+        }
+    };
+}

tests/src/test/scala/org/apache/openwhisk/core/cli/test/WskCliBasicUsageTests.scala

@@ -1561,6 +1561,37 @@ class WskCliBasicUsageTests extends TestHelpers with WskTestHelpers {
     }
   }
 
+  it should "not delete a trigger when feed deletion fails" in withAssetCleaner(wskprops) { (wp, assetHelper) =>
+    val actionName = withTimestamp("feed-action-fails-delete")
+    val triggerName = withTimestamp("feedDeleteTest")
+    val feedActionCreateParams = Map("statusCode" -> JsNumber(200))
+    val feedActionPath = new File(".").getAbsolutePath() + "/src/dat/feed-action-fails-delete.js"
+
+    assetHelper.withCleaner(wsk.action, actionName) { (action, _) =>
+      action.create(actionName, Some(feedActionPath))
+    }
+
+    try {
+      wsk.trigger.create(triggerName, feed = Some(actionName), parameters = feedActionCreateParams)
+      wsk.trigger.delete(triggerName, expectedExitCode = ERROR_EXIT).stderr should include(
+        """Unable to delete trigger""")
+    } finally {
+      wsk.cli(
+        Seq(
+          "trigger",
+          "delete",
+          s"$triggerName",
+          "--auth",
+          wskprops.authKey,
+          "--apihost",
+          wskprops.apihost,
+          "--apiversion",
+          wskprops.apiversion,
+          "-i",
+          "-f"))
+    }
+  }
+
   it should "invoke a feed action with the correct lifecyle event when creating, retrieving and deleting a feed trigger" in withAssetCleaner(
     wskprops) { (wp, assetHelper) =>
     val actionName = withTimestamp("echo")

vendor/vendor.json

@@ -3,16 +3,16 @@
 	"ignore": "test",
 	"package": [
 		{
-			"checksumSHA1": "upP6n3vm+l0xwq1EswdwVQSHDOg=",
+			"checksumSHA1": "v0S6R6MWfslQgopOXRIhcd9OdHk=",
 			"path": "github.com/apache/openwhisk-client-go/whisk",
-			"revision": "d8ccb1442651beee6a9245913e3ca0cb182888b1",
-			"revisionTime": "2019-08-09T21:43:19Z"
+			"revision": "d272b2b1129269d384c1dbba6c39156abc10ad3c",
+			"revisionTime": "2019-12-11T16:53:14Z"
 		},
 		{
-			"checksumSHA1": "uN1QmjP7Z6Rlkw73uOAQrtNKQR0=",
+			"checksumSHA1": "wdSbAqtYatmuN3ckhnIfwLMJM0U=",
 			"path": "github.com/apache/openwhisk-client-go/wski18n",
-			"revision": "d8ccb1442651beee6a9245913e3ca0cb182888b1",
-			"revisionTime": "2019-08-09T21:43:19Z"
+			"revision": "d272b2b1129269d384c1dbba6c39156abc10ad3c",
+			"revisionTime": "2019-12-11T16:53:14Z"
 		},
 		{
 			"checksumSHA1": "jgCQbGeq+qGCWmBQOcl0LF6Dy0E=",

wski18n/resources/en_US.all.json

@@ -682,6 +682,10 @@
     "id": "FEED_CONFIGURATION_FAILURE",
     "translation": "Unable to configure feed '{{.feedname}}': {{.err}}"
   },
+  {
+    "id": "force trigger deletion even when feed deletion fails",
+    "translation": "force trigger deletion even when feed deletion fails"
+  },
   {
     "note-to-translators": "DO NOT TRANSLATE THE 'yes' AND 'no'.  THOSE ARE FIXED CLI ARGUMENT VALUES",
     "id": "trigger visibility `SCOPE`; yes = shared, no = private",