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Introduction

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The example focuses on how easy it is to create a micro-service and its APIs as well as how to use the IMFV.

The Input mapping, filtering and validation (IMFV) is an engine provided by the SOAJS framework and is responsible to fetch and clean the inputs arriving to your API at runtime.

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Code Block
languagebash
titleRunning the service
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# go to correct directory examples/example01 and start the service
cd /opt/soajs/node_modules/soajs.examples/example01/
 
# start the soajs example environment
sudo soajs services start --env=example
 
# export necessary environment variables to create local awareness
export SOAJS_PROFILE=/opt/soajs/node_modules/soajs.utilities/data/getStarted/profile.jsENV=EXAMPLE
export SOAJS_SRVPORT=4021
export SOAJS_ENVDEPLOY_MANUAL=test1
export SOAJS_SRVIPREGISTRY_API=127.0.0.1:21000
 
 
# start service
node .

Each running service listens on two ports: The data port and the maintenance port.

The service in this example runs on the local machine, and listens on port 40104021.

The second port is the maintenance port. The convention we use at SOAJS for maintenance ports is maintenance port = data port + 1000 therefore, the maintenance port is 5010 for this service.

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Code Block
languagebash
titleHeartbeat
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curl -X GET "http://127.0.0.1:50105021/heartbeat"

The response below indicates that the service is running without any errors.

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The first API to test is the "TestGet". In this scenario, the request is sent with only the "firstName" input. The request does not contain the second mandatory input: "lastName". So we expect the response to return with an error.

Code Block
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titleTestGet request: Missing Last Name
curl -X GET "http://127.0.0.1:40104021/testGet?firstName=John"

As expected, the API returned an error response. Since "lastName" is a required field and is missing in the querystring, the IMFV stopped the request returned an error response.

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Code Block
languagebash
titleTestGet request: Success
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curl -X GET "http://127.0.0.1:40104021/testGet?firstName=John&lastName=Smith" 

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Code Block
languagejs
titleTestGet Reponse: Success
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{"result": true,"data": {"firstName": "John","lastName": "Smith"}}

"testPost" API: Success

This API is exactly like testGet but uses the "post" method.

Code Block
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titleTestPost request: Sucess
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curl -X POST -H "Content-type:application/json" -H "Accept:application/json" "http://127.0.0.1:40104021/testPost" -d '{"firstName":"John","lastName":"Smith","email":"john@smith.com"}'

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This request fails because of the invalid firstName "johnx" (Instead of "john"). This restriction is specified in the service itself.

Code Block
languagebashjs
titleTestPost request: Failure
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curl -X POST -H "Content-type:application/json" -H "Accept:application/json" "http://127.0.0.1:40104021/testPost" -d '{"firstName":"Johnx","lastName":"Smith"}'

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SOAJS also provides supports the PUT method:

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titleTestPut request: Success
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curl -X PUT -H "Content-type:application/json" -H "Accept:application/json" "http://127.0.0.1:40104021/testPut" -d '{"firstName":"John","lastName":"Smith"}'

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SOAJS also provides supports the DEL protocol:

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titleTestDel request: Success
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curl -X DELETE "http://127.0.0.1:40104021/testDel?firstName=John&lastName=Smith"

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In this first request, both "firstName" and a "lastName" parameters are supplied.

Code Block
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titleBuildName request: Success
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curl -X GET "http://127.0.0.1:40104021/buildName?firstName=James&lastName=Smith"

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"buildName" API: Success (No FirstName Parameter)

In this test, the "firstName" parameter is not supplied. However, since the API is configured to fallback to a default value, no error response is generated. Rather, a response containing the default "firstName", in addition to the "lastName" supplied by the request, was generated instead.

Code Block
languagebashjs
titleBuildName request: Success
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curl -X GET "http://127.0.0.1:40104021/buildName?lastName=Smith"


Code Block
languagejs
titleBuildName request: success
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{"result": true,"data": {"fullName": "John Smith"}}