32 lines
1.5 KiB
Plaintext
32 lines
1.5 KiB
Plaintext
# HTTP Request Function
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This module provides an HTTP request function that can be reused and composed in other applications.
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The `Function` uses the reactive `WebClient` from `Spring WebFlux` and is implemented as a `java.util.function.Function`.
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This function gives you a reactive stream of `ResponseEntity` given a stream of request messages as the function a signature of `Function<Flux<Message<?>,Flux<ResponseEntity>>`.
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Users have to subscribe to the returned `Flux` to receive the data.
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## Beans for injection
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You can import the `HttpRequestFunction` configuration in a Spring Boot application and then inject the following bean.
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`httpRequestFunction`
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You may inject this as `HttpRequestFunction`.
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You can use `httpRequestFunction` as a qualifier when injecting.
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Once injected, you can use the `apply` method of the `Function` to invoke it and then subscribe to the returned `Flux`.
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## Configuration Options
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All configuration properties are prefixed with `http.request`.
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For more information on the various options available, please see link:src/main/java/org/springframework/cloud/fn/http/request/HttpRequestFunctionProperties.java[HttpRequestFunctionProperties.java]
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## Examples
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See this link:src/test/java/org/springframework/cloud/fn/http/request/HttpRequestFunctionApplicationTests.java[test suite] for examples of how this function is used.
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## Other usage
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See this link:../../../applications/processor/http-request-processor/README.adoc[README] where this function is used to create a Spring Cloud Stream application to process HTTP requests. |