Add bearer capability per specific client

[inemtsev]

The need for this change is that we need to be able to set the bearer Token per request (for Java native library option), we would like to reuse ApiClient (because recreating it is expensive), but bearer token needs to change. We can achieve this by creating a new api class, but reusing the ApiClient.

For example:

var apiClient = new ApiClient(); // reuse this instance across requests
apiClient.setRequestInterceptor(builder -> 
    builder.header("X-API-Key", "your-api-key-here")
);

var authClient = new AuthClient(apiClient); // create new one every use
authClient.setBearerToken(fooToken);

var walletClient = new WalletClient(apiClient); // create new one every use
walletClient.setBearerToken(fooToken)

Related issue: #21487

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[inemtsev]

Can you please take a look?

@bbdouglas @sreeshas @jfiala @lukoyanov @cbornet @jeff9finger @karismann @Zomzog @lwlee2608 @martin-mfg

[wing328]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

[Mattias-Sehlstedt]

Hi @inemtsev,

Instead of instantiating new objects, would an approach similar to this be possible? Where the bearer is instead injected with a supplier, and the type of supplier can determine whether the token is reused for each invocation or if it is uniquely generated/fetched each time?

[inemtsev]

Hi @inemtsev,

Instead of instantiating new objects, would an approach similar to this be possible? Where the bearer is instead injected with a supplier, and the type of supplier can determine whether the token is reused for each invocation or if it is uniquely generated/fetched each time?

This is an interesting approach, but in our case the token is almost always unique. For example a BFF API takes a user token of our customers and fans-out requests to downstream services. One of these downstream APIs needs this token passed on to them to do a secure operation. So basically the token is fairly unique across requests.

[inemtsev]

@wing328 Thanks for the headsup. I think I fixed the emails now and regenerated the samples. Can you please help target the correct release branch?