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rust-server.server-operation.mustache Maven / Gradle / Ivy
// {{{operationId}}} - {{{httpMethod}}} {{{path}}}
&hyper::Method::{{vendorExtensions.x-http-method}} if path.matched(paths::ID_{{vendorExtensions.x-path-id}}) => {
{{#hasAuthMethods}}
{
let authorization = match (&context as &dyn Has>).get() {
&Some(ref authorization) => authorization,
&None => return Ok(Response::builder()
.status(StatusCode::FORBIDDEN)
.body(Body::from("Unauthenticated"))
.expect("Unable to create Authentication Forbidden response")),
};
{{#authMethods}}
{{#isOAuth}}
// Authorization
if let Scopes::Some(ref scopes) = authorization.scopes {
let required_scopes: std::collections::BTreeSet = vec![
{{#scopes}}
"{{{scope}}}".to_string(), // {{{description}}}
{{/scopes}}
].into_iter().collect();
if !required_scopes.is_subset(scopes) {
let missing_scopes = required_scopes.difference(scopes);
return Ok(Response::builder()
.status(StatusCode::FORBIDDEN)
.body(Body::from(missing_scopes.fold(
"Insufficient authorization, missing scopes".to_string(),
|s, scope| format!("{} {}", s, scope))
))
.expect("Unable to create Authentication Insufficient response")
);
}
}
{{/isOAuth}}
{{/authMethods}}
}
{{/hasAuthMethods}}
{{#vendorExtensions}}
{{#x-consumes-multipart}}
let boundary = match swagger::multipart::form::boundary(&headers) {
Some(boundary) => boundary.to_string(),
None => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from("Couldn't find valid multipart body".to_string()))
.expect("Unable to create Bad Request response for incorrect boundary")),
};
{{/x-consumes-multipart}}
{{#x-has-path-params}}
// Path parameters
let path: &str = &uri.path().to_string();
let path_params =
paths::REGEX_{{{x-path-id}}}
.captures(&path)
.unwrap_or_else(||
panic!("Path {} matched RE {{{x-path-id}}} in set but failed match against \"{}\"", path, paths::REGEX_{{{x-path-id}}}.as_str())
);
{{/x-has-path-params}}
{{/vendorExtensions}}
{{#pathParams}}
let param_{{{paramName}}} = match percent_encoding::percent_decode(path_params["{{{baseName}}}"].as_bytes()).decode_utf8() {
Ok(param_{{{paramName}}}) => match param_{{{paramName}}}.parse::<{{{dataType}}}>() {
Ok(param_{{{paramName}}}) => param_{{{paramName}}},
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse path parameter {{{baseName}}}: {}", e)))
.expect("Unable to create Bad Request response for invalid path parameter")),
},
Err(_) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't percent-decode path parameter as UTF-8: {}", &path_params["{{{baseName}}}"])))
.expect("Unable to create Bad Request response for invalid percent decode"))
};
{{/pathParams}}
{{#vendorExtensions}}
{{#x-callback-params}}
let callback_{{.}} = path_params["{{{.}}}"].to_string();
{{/x-callback-params}}
{{/vendorExtensions}}
{{#headerParams}}
{{#-first}}
// Header parameters
{{/-first}}
let param_{{{paramName}}} = headers.get(HeaderName::from_static("{{{nameInLowerCase}}}"));
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(v) => match header::IntoHeaderValue::<{{{dataType}}}>::try_from((*v).clone()) {
Ok(result) =>
{{#required}}
result.0,
{{/required}}
{{^required}}
Some(result.0),
{{/required}}
Err(err) => {
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Invalid header {{{baseName}}} - {}", err)))
.expect("Unable to create Bad Request response for invalid header {{{baseName}}}"));
},
},
None => {
{{#required}}
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from("Missing required header {{{baseName}}}"))
.expect("Unable to create Bad Request response for missing required header {{{baseName}}}"));
{{/required}}
{{^required}}
None
{{/required}}
}
};
{{#-last}}
{{/-last}}
{{/headerParams}}
{{#queryParams}}
{{#-first}}
// Query parameters (note that non-required or collection query parameters will ignore garbage values, rather than causing a 400 response)
let query_params = form_urlencoded::parse(uri.query().unwrap_or_default().as_bytes()).collect::>();
{{/-first}}
let param_{{{paramName}}} = query_params.iter().filter(|e| e.0 == "{{{baseName}}}").map(|e| e.1.to_owned())
{{#isArray}}
{{^vendorExtensions.x-consumes-json}}
.filter_map(|param_{{{paramName}}}| param_{{{paramName}}}.parse().ok())
.collect::>();
{{^required}}
let param_{{{paramName}}} = if !param_{{{paramName}}}.is_empty() {
Some(param_{{{paramName}}})
} else {
None
};
{{/required}}
{{/vendorExtensions.x-consumes-json}}
{{#vendorExtensions.x-consumes-json}}
.nth(0);
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(param_{{{paramName}}}) => {
let param_{{{paramName}}} =
serde_json::from_str::<{{{dataType}}}>
(¶m_{{{paramName}}});
match param_{{{paramName}}} {
Ok(param_{{{paramName}}}) => Some(param_{{{paramName}}}),
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse query parameter {{{baseName}}} - doesn't match schema: {}", e)))
.expect("Unable to create Bad Request response for invalid query parameter {{{baseName}}}")),
}
},
None => None,
};
{{#required}}
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(param_{{{paramName}}}) => param_{{{paramName}}},
None => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from("Missing required query parameter {{{baseName}}}"))
.expect("Unable to create Bad Request response for missing query parameter {{{baseName}}}")),
};
{{/required}}
{{/vendorExtensions.x-consumes-json}}
{{/isArray}}
{{^isArray}}
.nth(0);
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(param_{{{paramName}}}) => {
let param_{{{paramName}}} =
{{#vendorExtensions.x-consumes-json}}
serde_json::from_str::<{{{dataType}}}>
{{/vendorExtensions.x-consumes-json}}
{{^vendorExtensions.x-consumes-json}}
<{{{dataType}}} as std::str::FromStr>::from_str
{{/vendorExtensions.x-consumes-json}}
(¶m_{{{paramName}}});
match param_{{{paramName}}} {
Ok(param_{{{paramName}}}) => Some(param_{{{paramName}}}),
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse query parameter {{{baseName}}} - doesn't match schema: {}", e)))
.expect("Unable to create Bad Request response for invalid query parameter {{{baseName}}}")),
}
},
None => None,
};
{{#required}}
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(param_{{{paramName}}}) => param_{{{paramName}}},
None => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from("Missing required query parameter {{{baseName}}}"))
.expect("Unable to create Bad Request response for missing query parameter {{{baseName}}}")),
};
{{/required}}
{{/isArray}}
{{#-last}}
{{/-last}}
{{/queryParams}}
{{#vendorExtensions}}
{{^x-consumes-multipart}}
{{#bodyParams}}
{{#-first}}
// Body parameters (note that non-required body parameters will ignore garbage
// values, rather than causing a 400 response). Produce warning header and logs for
// any unused fields.
let result = body.to_raw().await;
match result {
Ok(body) => {
{{#vendorExtensions}}
{{^x-consumes-plain-text}}
let mut unused_elements = Vec::new();
{{/x-consumes-plain-text}}
let param_{{{paramName}}}: Option<{{{dataType}}}> = if !body.is_empty() {
{{#x-consumes-xml}}
let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
{{/x-consumes-xml}}
{{#x-consumes-json}}
let deserializer = &mut serde_json::Deserializer::from_slice(&*body);
{{/x-consumes-json}}
{{^x-consumes-plain-text}}
match serde_ignored::deserialize(deserializer, |path| {
warn!("Ignoring unknown field in body: {}", path);
unused_elements.push(path.to_string());
}) {
Ok(param_{{{paramName}}}) => param_{{{paramName}}},
{{#required}}
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse body parameter {{{baseName}}} - doesn't match schema: {}", e)))
.expect("Unable to create Bad Request response for invalid body parameter {{{baseName}}} due to schema")),
{{/required}}
{{^required}}
Err(_) => None,
{{/required}}
}
{{/x-consumes-plain-text}}
{{#x-consumes-plain-text}}
{{#isByteArray}}
Some(swagger::ByteArray(body.to_vec()))
{{/isByteArray}}
{{#isString}}
match String::from_utf8(body.to_vec()) {
Ok(param_{{{paramName}}}) => Some(param_{{{paramName}}}),
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse body parameter {{{baseName}}} - not valid UTF-8: {}", e)))
.expect("Unable to create Bad Request response for invalid body parameter {{{baseName}}} due to UTF-8")),
}
{{/isString}}
{{/x-consumes-plain-text}}
{{/vendorExtensions}}
} else {
None
};
{{#required}}
let param_{{{paramName}}} = match param_{{{paramName}}} {
Some(param_{{{paramName}}}) => param_{{{paramName}}},
None => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from("Missing required body parameter {{{baseName}}}"))
.expect("Unable to create Bad Request response for missing body parameter {{{baseName}}}")),
};
{{/required}}
{{/-first}}
{{#-last}}
{{/-last}}
{{/bodyParams}}
{{/x-consumes-multipart}}
{{#x-consumes-multipart}}
{{^bodyParams}}
{{#vendorExtensions}}
// Form Body parameters (note that non-required body parameters will ignore garbage
// values, rather than causing a 400 response). Produce warning header and logs for
// any unused fields.
let result = body.to_raw();
match result.await {
Ok(body) => {
use std::io::Read;
// Read Form Parameters from body
let mut entries = match Multipart::with_body(&body.to_vec()[..], boundary).save().temp() {
SaveResult::Full(entries) => {
entries
},
_ => {
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Unable to process all message parts")))
.expect("Unable to create Bad Request response due to failure to process all message"))
},
};
{{#formParams}}
let field_{{{paramName}}} = entries.fields.remove("{{{paramName}}}");
let param_{{{paramName}}} = match field_{{{paramName}}} {
Some(field) => {
let mut reader = field[0].data.readable().expect("Unable to read field for {{{paramName}}}");
{{^required}}
Some({
{{/required}}
{{#isByteArray}}
let mut data = vec![];
reader.read_to_end(&mut data).expect("Reading saved binary data should never fail");
swagger::ByteArray(data)
{{/isByteArray}}
{{^isByteArray}}
{{#jsonSchema}}
let mut data = String::new();
reader.read_to_string(&mut data).expect("Reading saved String should never fail");
let {{{paramName}}}_model: {{{dataType}}} = match serde_json::from_str(&data) {
Ok(model) => model,
Err(e) => {
return Ok(
Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("{{{paramName}}} data does not match API definition : {}", e)))
.expect("Unable to create Bad Request due to missing required form parameter {{{paramName}}}"))
}
};
{{{paramName}}}_model
{{/jsonSchema}}
{{/isByteArray}}
{{^required}}
})
{{/required}}
},
None => {
{{#required}}
return Ok(
Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Missing required form parameter {{{paramName}}}")))
.expect("Unable to create Bad Request due to missing required form parameter {{{paramName}}}"))
{{/required}}
{{^required}}
None
{{/required}}
}
};
{{/formParams}}
{{/vendorExtensions}}
{{/bodyParams}}
{{/x-consumes-multipart}}
{{^x-consumes-multipart-related}}
{{^x-consumes-multipart}}
{{^bodyParams}}
{{#vendorExtensions}}
{{#formParams}}
{{#-first}}
// Form parameters
{{/-first}}
let param_{{{paramName}}} = {{^isContainer}}{{#vendorExtensions}}{{{x-example}}};{{/vendorExtensions}}{{/isContainer}}{{#isArray}}{{#required}}Vec::new();{{/required}}{{^required}}None;{{/required}}{{/isArray}}{{#isMap}}None;{{/isMap}}
{{#-last}}
{{/-last}}
{{/formParams}}
{{/vendorExtensions}}
{{/bodyParams}}
{{/x-consumes-multipart}}
{{/x-consumes-multipart-related}}
{{#x-consumes-multipart-related}}
// Body parameters (note that non-required body parameters will ignore garbage
// values, rather than causing a 400 response). Produce warning header and logs for
// any unused fields.
let result = body.to_raw();
match result.await {
Ok(body) => {
let mut unused_elements: Vec = vec![];
// Get multipart chunks.
// Extract the top-level content type header.
let content_type_mime = headers
.get(CONTENT_TYPE)
.ok_or("Missing content-type header".to_string())
.and_then(|v| v.to_str().map_err(|e| format!("Couldn't read content-type header value for {{operationId}}: {}", e)))
.and_then(|v| v.parse::().map_err(|_e| format!("Couldn't parse content-type header value for {{operationId}}")));
// Insert top-level content type header into a Headers object.
let mut multi_part_headers = Headers::new();
match content_type_mime {
Ok(content_type_mime) => {
multi_part_headers.set(ContentType(content_type_mime));
},
Err(e) => {
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(e))
.expect("Unable to create Bad Request response due to unable to read content-type header for {{operationId}}"));
}
}
// &*body expresses the body as a byteslice, &mut provides a
// mutable reference to that byteslice.
let nodes = match read_multipart_body(&mut&*body, &multi_part_headers, false) {
Ok(nodes) => nodes,
Err(e) => {
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Could not read multipart body for {{operationId}}: {}", e)))
.expect("Unable to create Bad Request response due to unable to read multipart body for {{operationId}}"));
}
};
{{#formParams}}
let mut param_{{{paramName}}} = None;
{{/formParams}}
for node in nodes {
if let Node::Part(part) = node {
let content_type = part.content_type().map(|x| format!("{}",x));
match content_type.as_ref().map(|x| x.as_str()) {
{{#formParams}}
{{^isBinary}}
Some("{{{contentType}}}") if param_{{{paramName}}}.is_none() => {
// Extract JSON part.
let deserializer = &mut serde_json::Deserializer::from_slice(part.body.as_slice());
let json_data: {{dataType}} = match serde_ignored::deserialize(deserializer, |path| {
warn!("Ignoring unknown field in JSON part: {}", path);
unused_elements.push(path.to_string());
}) {
Ok(json_data) => json_data,
Err(e) => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't parse body parameter {{dataType}} - doesn't match schema: {}", e)))
.expect("Unable to create Bad Request response for invalid body parameter {{dataType}} due to schema"))
};
// Push JSON part to return object.
param_{{{paramName}}}.get_or_insert(json_data);
},
{{/isBinary}}
{{#isBinary}}
Some("{{{contentType}}}") if param_{{{paramName}}}.is_none() => {
param_{{{paramName}}}.get_or_insert(swagger::ByteArray(part.body));
},
{{/isBinary}}
{{/formParams}}
Some(content_type) => {
warn!("Ignoring unexpected content type: {}", content_type);
unused_elements.push(content_type.to_string());
},
None => {
warn!("Missing content type");
},
}
} else {
unimplemented!("No support for handling unexpected parts");
// unused_elements.push();
}
}
{{#formParams}}
{{#-first}}
// Check that the required multipart chunks are present.
{{/-first}}
{{#required}}
let param_{{{paramName}}} = match param_required_binary_field {
Some(x) => x,
None => return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Missing required multipart/related parameter {{{paramName}}}")))
.expect("Unable to create Bad Request response for missing multipart/related parameter {{{paramName}}} due to schema"))
};
{{/required}}
{{#-last}}
{{/-last}}
{{/formParams}}
{{/x-consumes-multipart-related}}
{{/vendorExtensions}}
let result = api_impl.{{#vendorExtensions}}{{{x-operation-id}}}{{/vendorExtensions}}(
{{#vendorExtensions}}
{{#x-callback-params}}
callback_{{.}},
{{/x-callback-params}}
{{/vendorExtensions}}
{{#allParams}}
param_{{{paramName}}}{{#isArray}}.as_ref(){{/isArray}},
{{/allParams}}
&context
).await;
let mut response = Response::new(Body::empty());
response.headers_mut().insert(
HeaderName::from_static("x-span-id"),
HeaderValue::from_str((&context as &dyn Has).get().0.clone().to_string().as_str())
.expect("Unable to create X-Span-ID header value"));
{{#bodyParams}}
{{#vendorExtensions}}
{{^x-consumes-plain-text}}
if !unused_elements.is_empty() {
response.headers_mut().insert(
HeaderName::from_static("warning"),
HeaderValue::from_str(format!("Ignoring unknown fields in body: {:?}", unused_elements).as_str())
.expect("Unable to create Warning header value"));
}
{{/x-consumes-plain-text}}
{{/vendorExtensions}}
{{/bodyParams}}
match result {
Ok(rsp) => match rsp {
{{#responses}}
{{{operationId}}}Response::{{#vendorExtensions}}{{x-response-id}}{{/vendorExtensions}}
{{#dataType}}
{{^headers}}
(body)
{{/headers}}
{{#headers}}
{{#-first}}
{
body,
{{/-first}}
{{{name}}}{{^-last}},{{/-last}}
{{#-last}}
}
{{/-last}}
{{/headers}}
{{/dataType}}
{{^dataType}}
{{#headers}}
{{#-first}}
{
{{/-first}}
{{{name}}}{{^-last}},{{/-last}}
{{#-last}}
}
{{/-last}}
{{/headers}}
{{/dataType}}
=> {
{{#headers}}
{{^required}}
if let Some({{{name}}}) = {{{name}}} {
{{/required}}
let {{{name}}} = match header::IntoHeaderValue({{{name}}}).try_into() {
Ok(val) => val,
Err(e) => {
return Ok(Response::builder()
.status(StatusCode::INTERNAL_SERVER_ERROR)
.body(Body::from(format!("An internal server error occurred handling {{name}} header - {}", e)))
.expect("Unable to create Internal Server Error for invalid response header"))
}
};
response.headers_mut().insert(
HeaderName::from_static("{{{nameInLowerCase}}}"),
{{name}}
);
{{^required}}
}
{{/required}}
{{/headers}}
*response.status_mut() = StatusCode::from_u16({{{code}}}).expect("Unable to turn {{{code}}} into a StatusCode");
{{#produces}}
{{#-first}}
{{#dataType}}
{{#vendorExtensions}}
response.headers_mut().insert(
CONTENT_TYPE,
HeaderValue::from_str("{{{x-mime-type}}}")
.expect("Unable to create Content-Type header for {{{x-uppercase-operation-id}}}_{{x-uppercase-response-id}}"));
{{/vendorExtensions}}
{{/dataType}}
{{/-first}}
{{/produces}}
{{#dataType}}
{{#vendorExtensions}}
{{#x-produces-xml}}
{{^x-has-namespace}}
let body = serde_xml_rs::to_string(&body).expect("impossible to fail to serialize");
{{/x-has-namespace}}
{{#x-has-namespace}}
let mut namespaces = std::collections::BTreeMap::new();
// An empty string is used to indicate a global namespace in xmltree.
namespaces.insert("".to_string(), {{{dataType}}}::NAMESPACE.to_string());
let body = serde_xml_rs::to_string_with_namespaces(&body, namespaces).expect("impossible to fail to serialize");
{{/x-has-namespace}}
{{/x-produces-xml}}
{{#x-produces-json}}
let body = serde_json::to_string(&body).expect("impossible to fail to serialize");
{{/x-produces-json}}
{{#x-produces-bytes}}
let body = body.0;
{{/x-produces-bytes}}
{{#x-produces-plain-text}}
let body = body;
{{/x-produces-plain-text}}
{{/vendorExtensions}}
*response.body_mut() = Body::from(body);
{{/dataType}}
},
{{/responses}}
},
Err(_) => {
// Application code returned an error. This should not happen, as the implementation should
// return a valid response.
*response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
*response.body_mut() = Body::from("An internal error occurred");
},
}
Ok(response)
{{#vendorExtensions}}
{{^x-consumes-multipart}}
{{^bodyParams}}
{{#vendorExtensions}}
{{#x-consumes-multipart-related}}
},
Err(e) => Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't read body parameter {{{baseName}}}: {}", e)))
.expect("Unable to create Bad Request response due to unable to read body parameter {{{baseName}}}")),
}
{{/x-consumes-multipart-related}}
{{/vendorExtensions}}
{{/bodyParams}}
{{/x-consumes-multipart}}
{{/vendorExtensions}}
{{#bodyParams}}
{{#-first}}
},
Err(e) => Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't read body parameter {{{baseName}}}: {}", e)))
.expect("Unable to create Bad Request response due to unable to read body parameter {{{baseName}}}")),
}
{{/-first}}
{{/bodyParams}}
{{#vendorExtensions}}
{{#x-consumes-multipart}}
{{^bodyParams}}
{{#vendorExtensions}}
},
Err(e) => Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Body::from(format!("Couldn't read multipart body")))
.expect("Unable to create Bad Request response due to unable read multipart body")),
}
{{/vendorExtensions}}
{{/bodyParams}}
{{/x-consumes-multipart}}
{{/vendorExtensions}}
},
