42 lines
1.3 KiB
D
42 lines
1.3 KiB
D
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/// Utilities for reading and writing JSON in HTTP request contexts.
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module util.json;
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import handy_httpd;
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import slf4d;
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import asdf;
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/**
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* Reads a JSON payload into a type T. Throws an `HttpStatusException` if
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* the data cannot be read or converted to the given type, with a 400 BAD
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* REQUEST status.
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* Params:
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* ctx = The request context to read from.
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* Returns: The data that was read.
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*/
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T readJsonPayload(T)(ref HttpRequestContext ctx) {
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try {
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string requestBody = ctx.request.readBodyAsString();
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return deserialize!T(requestBody);
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} catch (SerdeException e) {
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debug_("Got an exception while deserializing a request body.", e);
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throw new HttpStatusException(HttpStatus.BAD_REQUEST);
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}
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}
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/**
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* Writes data of type T to a JSON response body. Throws an `HttpStatusException`
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* with status 501 INTERNAL SERVER ERROR if serialization fails.
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* Params:
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* ctx = The request context to write to.
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* data = The data to write.
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*/
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void writeJsonBody(T)(ref HttpRequestContext ctx, in T data) {
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try {
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string jsonStr = serializeToJson(data);
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ctx.response.writeBodyString(jsonStr, "application/json");
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} catch (SerdeException e) {
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debug_("Exception while serializing a response body.", e);
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throw new HttpStatusException(HttpStatus.INTERNAL_SERVER_ERROR);
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}
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}
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