Get the data by making an API call in JSON format

[sbhadra]

Hi Team,

I need get some list of data from an api which is given to me. The api url is something like mentioned below

http://api.xyz.com/1/statuses/home_timeline.json?since_id=12345&max_id=54321&created=2020-01-09T00:00:00Z&created=2020-01-10T00:00:00Z)

Over here we have two dates 9th Jan and 10th Jan. Hence, I need all the the data of 9th Jan for entire 24 hrs in json format. What should be the talend job design. I had checked couple of talend community posts which suggests I need to use tRestClient however, I am not sure how to proceed further. Please suggest on the same

[root]

You are on the right track. Can you share what you have coded so far and what is the error you are receiving? Thanks

[Anonymous · Accepted solution]

Hi,

your job design will look like :

trestClient --ResponseOK--> tExtractJSONField --main--> tLogRow 

[sbhadra]

Can you please provide an example. A job flow screenshot would be appreciating. Also the created date will be based on the current date created>=2019-01-09T00:00:00Z and created<2019-06-10T00:00:00Z where in date with < will be the current date and time, and >= will be the subtracted date based on data provided in context property file like 6 hrs , 12 hrs, 24 hrs etc.  

[Anonymous]

For testing, print the response to console to see if you are able to call the API has the response.
tRest--main--tLogRow

Next, you need to use a tExtractJsonField to extract data from the response.
tRest--main--tExtractJsonField--tLogRow

Let me know which step are you on now or any error do you have?

Regards
Shong

[sbhadra]

Hi Team,

As per the instruction I am able to get the desired result however, I am facing another issue in the same. After I extract the json with the help of textractjsonfields component I am getting some ids (let say 1111, 2222 etc). I want to iterate through this ids and create a separate url which will be used to hit another api using tRestClient. The current flow is mentioned below

tRestCliet->tExtractJsonFields-> Getting the Ids over here and need those ids to build a url like mentioned below

https://api.xyz.com/1111/details.json

https://api.xyz.com/2222/details.json

Only the id value will change, hence I need to iterate through this ids to create individual urls which is  to be called individually to capture the response.

Please suggest any resolution for the same.

[Anonymous]

Hi,

If you only need the id sent from your first service, an example could be :

Talend schematsetglobalvar parameterssecond api call

filter your ids with tFilterColumns and delete the possibly duplicates with tUniqRow, then tFlowtoIterate permits to make a treatment id by id.

Write your id in a globalVar with tsetglobalVar and use it 'OnComponentOK' in your tRESTClient_2 as explained in the pictures.

Regards,

Pierre

[sbhadra]

Thanks it worked for me.

[sbhadra]

Hi Team,

If I want to use the same id to call another api to extract some data how to proceed in such a scenario. Like say 

 After textractJsonFields I want to have another api call with the id which is the current iteration value

https://api.xyz.com/details/1111/comments.json where 1111 is the id, which is the current iterated value using tflowToIterate component.