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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,18 @@ | ||
| This example deploys a Banker Bot based on the [Lex V2 Workshop](https://amazonlex.workshop.aws/) | ||
| which showcases various Lex V2 capabilities. | ||
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| The template shows how to attach a [Lambda Fulfillment Code Hook](https://docs.aws.amazon.com/lexv2/latest/dg/lambda.html) | ||
| and how to configure [Text Conversation Logs](https://docs.aws.amazon.com/lexv2/latest/dg/conversation-logs-configure.html) | ||
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| Before you use this example, you should deploy the Custom Resource stack | ||
| in your AWS account. The Custom Resource stack name is passed as a parameter | ||
| when deploying this example. This stack name parameter is used to import the | ||
| values of the Lambda function and the IAM role created by the Custom Resource. | ||
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| The bot in this example can be deployed using the | ||
| [AWS Serverless Application Model Command Line Interface (SAM CLI)](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/what-is-sam.html): | ||
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| ```bash | ||
| sam build --use-container | ||
| sam deploy --guided | ||
| ``` |
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| # https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-config.html | ||
| # https://aws.amazon.com/blogs/compute/optimizing-serverless-development-with-samconfig/ | ||
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| version=0.1 | ||
| [default.deploy.parameters] | ||
| stack_name = "lex-v2-cfn-cr-banker-bot" | ||
| s3_bucket = "lex-v2-cfn-cr-artifacts-506886316466-us-east-1" | ||
| s3_prefix = "sam-artifacts/lex-v2-cfn-banker-bot" | ||
| region = "us-east-1" | ||
| fail_on_empty_changeset = false | ||
| confirm_changeset = true | ||
| capabilities = "CAPABILITY_IAM CAPABILITY_AUTO_EXPAND" | ||
| parameter_overrides = """ | ||
| LexV2CfnCrStackName=lex-v2-cfn-cr \ | ||
| """ |
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examples/banker-bot/src/lambda_functions/banker_bot/lambda_function.py
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| """ | ||
| MIT No Attribution | ||
| Copyright 2021 Amazon Web Services | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy of this | ||
| software and associated documentation files (the "Software"), to deal in the Software | ||
| without restriction, including without limitation the rights to use, copy, modify, | ||
| merge, publish, distribute, sublicense, and/or sell copies of the Software, and to | ||
| permit persons to whom the Software is furnished to do so. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, | ||
| INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A | ||
| PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | ||
| HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
| OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
| SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| """ | ||
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| # https://amazonlex.workshop.aws/banker-bot/create-first-lambda.en.files/BankingBotEnglish.py | ||
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| import json | ||
| import random | ||
| import decimal | ||
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| def random_num(): | ||
| return(decimal.Decimal(random.randrange(1000, 50000))/100) | ||
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| def get_slots(intent_request): | ||
| return intent_request['sessionState']['intent']['slots'] | ||
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| def get_slot(intent_request, slotName): | ||
| slots = get_slots(intent_request) | ||
| if slots is not None and slotName in slots and slots[slotName] is not None: | ||
| return slots[slotName]['value']['interpretedValue'] | ||
| else: | ||
| return None | ||
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| def get_session_attributes(intent_request): | ||
| sessionState = intent_request['sessionState'] | ||
| if 'sessionAttributes' in sessionState: | ||
| return sessionState['sessionAttributes'] | ||
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| return {} | ||
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| def elicit_intent(intent_request, session_attributes, message): | ||
| return { | ||
| 'sessionState': { | ||
| 'dialogAction': { | ||
| 'type': 'ElicitIntent' | ||
| }, | ||
| 'sessionAttributes': session_attributes | ||
| }, | ||
| 'messages': [ message ] if message != None else None, | ||
| 'requestAttributes': intent_request['requestAttributes'] if 'requestAttributes' in intent_request else None | ||
| } | ||
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| def close(intent_request, session_attributes, fulfillment_state, message): | ||
| intent_request['sessionState']['intent']['state'] = fulfillment_state | ||
| return { | ||
| 'sessionState': { | ||
| 'sessionAttributes': session_attributes, | ||
| 'dialogAction': { | ||
| 'type': 'Close' | ||
| }, | ||
| 'intent': intent_request['sessionState']['intent'] | ||
| }, | ||
| 'messages': [message], | ||
| 'sessionId': intent_request['sessionId'], | ||
| 'requestAttributes': intent_request['requestAttributes'] if 'requestAttributes' in intent_request else None | ||
| } | ||
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| def CheckBalance(intent_request): | ||
| session_attributes = get_session_attributes(intent_request) | ||
| slots = get_slots(intent_request) | ||
| account = get_slot(intent_request, 'accountType') | ||
| #The account balance in this case is a random number | ||
| #Here is where you could query a system to get this information | ||
| balance = str(random_num()) | ||
| text = "Thank you. The balance on your "+account+" account is $"+balance+" dollars." | ||
| message = { | ||
| 'contentType': 'PlainText', | ||
| 'content': text | ||
| } | ||
| fulfillment_state = "Fulfilled" | ||
| return close(intent_request, session_attributes, fulfillment_state, message) | ||
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| def FollowupCheckBalance(intent_request): | ||
| session_attributes = get_session_attributes(intent_request) | ||
| slots = get_slots(intent_request) | ||
| account = get_slot(intent_request, 'accountType') | ||
| #The account balance in this case is a random number | ||
| #Here is where you could query a system to get this information | ||
| balance = str(random_num()) | ||
| text = "Thank you. The balance on your "+account+" account is $"+balance+" dollars." | ||
| message = { | ||
| 'contentType': 'PlainText', | ||
| 'content': text | ||
| } | ||
| fulfillment_state = "Fulfilled" | ||
| return close(intent_request, session_attributes, fulfillment_state, message) | ||
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| def dispatch(intent_request): | ||
| intent_name = intent_request['sessionState']['intent']['name'] | ||
| response = None | ||
| # Dispatch to your bot's intent handlers | ||
| if intent_name == 'CheckBalance': | ||
| return CheckBalance(intent_request) | ||
| elif intent_name == 'FollowupCheckBalance': | ||
| return FollowupCheckBalance(intent_request) | ||
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| raise Exception('Intent with name ' + intent_name + ' not supported') | ||
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| def lambda_handler(event, context): | ||
| response = dispatch(event) | ||
| return response |
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