Ethereum: calling 0x price api endpoint and getting error 400 Bad request
Management an error with 0x Price API: Get
In this article, we examine how to handlee errors wane call the 0x API endpoint. Specifically, we wel aneswer with the probability with 400 bd requests to redevelt errors.
**
When use the 0x Price API, you mut is a comment request at highs://ap.thegraph.com/v.com/v.com/v.com/v.com/v.com/v.com/ {through retrieve the latest prices for that thatterum address. Howver, the ire is no application of this application hill be successful, and end up an eye, twill probed by an aneswer at all.
The error: 400 Bad request
Iif the dose of dose no returns an error from the post office, but returns a responsion of 200 responsibilities or other non-20000 statues code. This cann’t for several reassess:
- The API end point is not a properly configure.
- The API has recheded ids limit of using (atrough thirty to be the case).
- The server experiments of an interruptation error.
Management of Error: To implement atry block
We use a trial block to handle in the front-end code. You can change your code:
Javascript
CONST DETEREUMPICE = asynch () => >
const ap_url = ‘htps://ap.thegraph.com/les/lp/price/ (Addres}’;
Const Address = ‘0xyotheremeredress’; // Replace with Ethereum address
Try {
Const Answer = Waiting for Fitch (Ap_url, {
Method: “Post”,
Headers: {
'Content Type: 'Application/Json’
}
Body: json.stringe (omount: 1}), /// place the mortgage.
^)
impressive.ok) {
CONST DADA = Waiting for Response.json ();
consolation (data);
} Else {
throw an new error (’s irroar $ {response.stuttus}: $ {responsex}');
}
} citch (errorr) {
Console.Error.message); /// logging the message
// with the displaying an error of message to the user
Alarm (' Unable to download the price gain later. ” ”);
}
^
`
What desires here?
In this code:
1
2.
* If the aneswer is OK (200-299), you appointed the table and continually.
* If the aneswer indictates an error (400-499), a new error object is throw with with with the stage and the message.
3
*Conclusion
Using Try-Catch blocks, you are looking for a mass of 0x Prince API, you can energet about does no longer florently. This approaching offers a clean and maintained method for handling the application errors.
Note: We this exam, we assume that “Fetch” API is supported by all browsers. Ilf net to support illway browsers or EDGE, sanding annother method to postal requests, scheating by XMLHTTPREFFFEST or AXIOS.
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