공공 인공지능 오픈 API·DATA 서비스 포털의 위키백과 QA API를 aws 람다로 node.js 를 이용해 slack에서 받을 수 있도록 처리했습니다.
전체적인 내용은 https://blog.aliencube.org/ko/2016/05/15/slack-github-integration-with-aws-lambda/ 를 참고하였습니다.
http://www.usefulparadigm.com/2016/04/06/creating-a-slack-bot-with-aws-lambda-and-api-gateway/
https://gist.github.com/sjoonk/20ae13e5cd8be88e9824e3bad11b2859
http://aiopen.etri.re.kr/service_list.php
exports.handler = (event, context) => {
// Sets request options
var options = {
host: 'aiopen.etri.re.kr',
port: '8000',
path: '/WikiQA',
method: 'POST',
headers: {
'Content-Type': 'application/json'
}
};
var access_key = '발급받은키';
var type = 'irqa';
// Sets the request body
var data = {
'access_key': access_key,
'argument': {
'question': event.text,
'type': type
}
};
var request = require('http');
var req = request.request(options, function (res) {
var chunks = [];
res.on("data", function (chunk) {
chunks.push(chunk);
});
res.on("end", function () {
var body = Buffer.concat(chunks);
console.log(body.toString());
body = JSON.parse(body);
console.log(body.result);
if(body.result==0){
var text = body.return_object.WiKiInfo.IRInfo[0].sent;
var ans = body.return_object.WiKiInfo.AnswerInfo[0].answer;
}else{
var text = "없음";
var ans = event.text;
}
context.succeed({
"response_type": "in_channel",
"text": "ETRI 위키백과 QA API 결과 : " + ans,
"attachments": [
{
"text": "https://ko.wikipedia.org/wiki/" + encodeURI(ans) + "\n" + text,
"color": "#7CD197"
}
]
});
});
});
req.write(JSON.stringify(data));
req.end();
};
aws gateway 에서 매핑템플릿에 application/x-www-form-urlencoded 를 추가하지 않으면, json 요청 값을 처리할 수 없으니, 꼭 추가하자.
(event undefined)
## convert HTML POST data to JSON
## get the raw post data from the AWS built-in variable and give it a nicer name
#set($rawAPIData = $input.path('$'))
## first we get the number of "&" in the string, this tells us if there is more than one key value pair
#set($countAmpersands = $rawAPIData.length() - $rawAPIData.replace("&", "").length())
## if there are no "&" at all then we have only one key value pair.
## we append an ampersand to the string so that we can tokenise it the same way as multiple kv pairs.
## the "empty" kv pair to the right of the ampersand will be ignored anyway.
#if ($countAmpersands == 0)
#set($rawPostData = $rawAPIData + "&")
#end
## now we tokenise using the ampersand(s)
#set($tokenisedAmpersand = $rawAPIData.split("&"))
## we set up a variable to hold the valid key value pairs
#set($tokenisedEquals = [])
## now we set up a loop to find the valid key value pairs, which must contain only one "="
#foreach( $kvPair in $tokenisedAmpersand )
#set($countEquals = $kvPair.length() - $kvPair.replace("=", "").length())
#if ($countEquals == 1)
#set($kvTokenised = $kvPair.split("="))
#if ($kvTokenised[0].length() > 0)
## we found a valid key value pair. add it to the list.
#set($devNull = $tokenisedEquals.add($kvPair))
#end
#end
#end
## next we set up our loop inside the output structure "{" and "}"
{
#foreach( $kvPair in $tokenisedEquals )
## finally we output the JSON for this pair and append a comma if this isn't the last pair
#set($kvTokenised = $kvPair.split("="))
"$util.urlDecode($kvTokenised[0])" : #if($kvTokenised[1].length() > 0)"$util.urlDecode($kvTokenised[1])"#{else}""#end#if( $foreach.hasNext ),#end
#end
}
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