How to Loop HTTP Requests Until Some Condition Is Met đ[All Method]ī¸
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The blog is about How to Loop HTTP Requests Until Some Condition Is Met & provides a lot of information to the novice user and the more seasoned user. What should you do if you come across a code error! Let’s get started on fixing it.
Question: What is the best solution for this problem? Answer: This blog code can help you solve errors How to Loop HTTP Requests Until Some Condition Is Met. Question: What are the reasons for this code mistake and how can it be fixed? Answer: You can find a solution by following the advice in this blog.
I recently ran into an issue where I needed to keep sending HTTP requests until I had some valid response.
âValidâ means something different in different contexts.
Sometimes âvalidâ is just when status === 200
, but other times, itâs something completely different.
I needed to fetch data from an API, but it was returning inconsistent responses.
Letâs say, for this example, our data (res.data
) returns some JSON object that looks like this:
{
results: []
}
I wanted to keep making requests until results
was populated.
This is what I did.
const sendRequest = async (query) => {
const options = {
url: `${API_URL}?q=${query}`, // Some valid API URL
method: "GET" // Perform GET request
};
return new Promise((resolve, reject) => {
const request = (retries) => {
// Make the HTTP request
axios(options).then((res) => {
// Check some condition based on response
// Check number of retries left
if (res.data.results.length > 0 && retries > 0) {
request(--retries);
} else {
return resolve(res.data);
}
}).catch((error) => {
reject(error);
});
};
request(5);
});
};
I wrapped my axios
request inside a request()
method, which takes in the number of retries
I have for the current call.
When the axios
callback gains program control, I check that res.data.results
is populated and that I have some retries left.
If res.data.results
is empty or Iâve used all my attempts, then I just resolve with the JSON object.
At the bottom, I called request(5)
, giving myself five attempts to retrieve desirable results.
Revise the code and make it more robust with proper test case and check an error there before implementing into a production environment.
If you need assistance at any stage, please feel free to contact me.