51 lines
1.5 KiB
Rust
51 lines
1.5 KiB
Rust
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use super::{ApiError, ApiResult};
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use http::header;
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use hyper::{Body, Request, Response, StatusCode};
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use serde::Serialize;
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use ssz::Encode;
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pub enum Encoding {
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JSON,
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SSZ,
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YAML,
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}
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pub struct ResponseBuilder {
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encoding: Encoding,
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}
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impl ResponseBuilder {
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pub fn new(req: &Request<Body>) -> Self {
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let encoding = match req.headers().get(header::CONTENT_TYPE) {
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Some(h) if h == "application/ssz" => Encoding::SSZ,
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Some(h) if h == "application/yaml" => Encoding::YAML,
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_ => Encoding::JSON,
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};
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Self { encoding }
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}
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pub fn body<T: Serialize + Encode>(self, item: &T) -> ApiResult {
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let body: Body = match self.encoding {
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Encoding::JSON => Body::from(serde_json::to_string(&item).map_err(|e| {
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ApiError::ServerError(format!(
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"Unable to serialize response body as JSON: {:?}",
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e
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))
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})?),
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Encoding::SSZ => Body::from(item.as_ssz_bytes()),
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Encoding::YAML => Body::from(serde_yaml::to_string(&item).map_err(|e| {
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ApiError::ServerError(format!(
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"Unable to serialize response body as YAML: {:?}",
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e
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))
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})?),
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};
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Response::builder()
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.status(StatusCode::OK)
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.body(Body::from(body))
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.map_err(|e| ApiError::ServerError(format!("Failed to build response: {:?}", e)))
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}
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}
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