Vertx web/http client retry

[PAVAN PURANIK]

Hello, Vertx community,

Can anyone please help me if there is a support for retry mechanism like how we have for https://hc.apache.org/httpclient-3.x/apidocs/org/apache/commons/httpclient/DefaultHttpMethodRetryHandler.html.

Regards,

Pavan

[Julien Viet]

Hi,

now there is no such feature for the HttpClient nor the WebClient.

It seems pretty easy to implement with an WebClient interceptor, although it is part of the internal API (casting WebClient to WebClientInternal) we should make this API public in Vert.x 4 as it seems quite stable now.

Julien

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[Julien Ponge]

You may look into the RxJava 2 bindings, and use the retry operator.

- Julien

> On 20 Sep 2019, at 11:23, PAVAN PURANIK <pura...@gmail.com> wrote:
>

[Julien Viet]

that's a great suggestion

> To view this discussion on the web, visit https://groups.google.com/d/msgid/vertx/464C3839-AC55-4B80-AB1A-AC187C1FB5AF%40gmail.com.

[Vendy]

If the token were expired , how can I replace the token of header by retry operator ?

 

Julien Ponge於 2019年9月24日星期二 UTC+8下午9時26分14秒寫道：

You may look into the RxJava 2 bindings, and use the retry operator.

- Julien

> On 20 Sep 2019, at 11:23, PAVAN PURANIK <pura...@gmail.com> wrote:
>
> Hello, Vertx community,
> Can anyone please help me if there is a support for retry mechanism like how we have for https://hc.apache.org/httpclient-3.x/apidocs/org/apache/commons/httpclient/DefaultHttpMethodRetryHandler.html.
>
> Regards,
> Pavan
>
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> To unsubscribe from this group and stop receiving emails from it, send an email to ve...@googlegroups.com.

[Julien Ponge]

It’s a bit more complex and depends on what your code looks like.

Perhaps you can do it with an operation before the retry, like a map or flatMap that enriches some data with the token. In this case when retry() kicks-in due to a network / HTTP error then your intermediary operation puts a new one here.

- Julien

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[Javen Wang]

what about Circuit Breaker?