1// Copyright 2020 Google LLC 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15syntax = "proto3"; 16 17package google.actions.sdk.v2.interactionmodel; 18 19import "google/actions/sdk/v2/interactionmodel/event_handler.proto"; 20import "google/api/field_behavior.proto"; 21 22option go_package = "google.golang.org/genproto/googleapis/actions/sdk/v2/interactionmodel;interactionmodel"; 23option java_multiple_files = true; 24option java_outer_classname = "ConditionalEventProto"; 25option java_package = "com.google.actions.sdk.v2.interactionmodel"; 26 27// Registers events that trigger as the result of a true condition. 28message ConditionalEvent { 29 // Required. Filter condition for this event to trigger. If condition is evaluated to 30 // true then the associated `handler` will be triggered. 31 // The following variable references are supported: 32 // `$session` - To reference data in session storage. 33 // `$user` - To reference data in user storage. 34 // The following boolean operators are supported (with examples): 35 // `&&` - `session.params.counter > 0 && session.params.counter < 100` 36 // `||` - `session.params.foo == "John" || session.params.counter == "Adam"` 37 // `!` - `!(session.params.counter == 5)` 38 // The following comparisons are supported: 39 // `==`, `!=`, `<`, `>`, `<=`, `>=` 40 // The following list and string operators are supported (with examples): 41 // `in` - "Watermelon" in `session.params.fruitList` 42 // `size` - `size(session.params.fruitList) > 2` 43 // `substring` - `session.params.fullName.contains("John")` 44 string condition = 1 [(google.api.field_behavior) = REQUIRED]; 45 46 // Optional. Destination scene which the conversation should jump to when the associated 47 // condition is evaluated to true. The state of the current scene is destroyed 48 // on the transition. 49 string transition_to_scene = 2 [(google.api.field_behavior) = OPTIONAL]; 50 51 // Optional. Event handler which is triggered when the associated condition is evaluated 52 // to `true`. Should execute before transitioning to the destination scene. 53 // Useful to generate Prompts in response to events. 54 EventHandler handler = 3 [(google.api.field_behavior) = OPTIONAL]; 55} 56