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|
use serde::{Deserialize, Serialize};
use crate::RPCError;
pub type ID = u64;
pub const JSONRPC_VERSION: &str = "2.0";
/// Parse error: Invalid JSON was received by the server.
pub const PARSE_ERROR_CODE: i32 = -32700;
/// Invalid request: The JSON sent is not a valid Request object.
pub const INVALID_REQUEST_ERROR_CODE: i32 = -32600;
/// Method not found: The method does not exist / is not available.
pub const METHOD_NOT_FOUND_ERROR_CODE: i32 = -32601;
/// Invalid params: Invalid method parameter(s).
pub const INVALID_PARAMS_ERROR_CODE: i32 = -32602;
/// Internal error: Internal JSON-RPC error.
pub const INTERNAL_ERROR_CODE: i32 = -32603;
/// SubscriptionID is used to identify a subscription.
pub type SubscriptionID = u32;
pub const INTERNAL_ERROR_MSG: &str = "Internal error";
/// Request represents a JSON-RPC request message.
/// It includes the JSON-RPC version, an identifier for the request, the method
/// to be invoked, and optional parameters.
#[derive(Debug, Serialize, Deserialize)]
pub struct Request {
/// JSON-RPC version, typically "2.0".
pub jsonrpc: String,
/// Unique identifier for the request, can be a number or a string.
pub id: serde_json::Value,
/// The name of the method to be invoked.
pub method: String,
/// Optional parameters for the method.
#[serde(skip_serializing_if = "Option::is_none")]
pub params: Option<serde_json::Value>,
}
/// Response represents a JSON-RPC response message.
/// It includes the JSON-RPC version, an identifier matching the request, the result of the request,
/// and an optional error.
#[derive(Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct Response {
/// JSON-RPC version, typically "2.0".
pub jsonrpc: String,
/// Unique identifier for the request, can be a number or a string.
#[serde(skip_serializing_if = "Option::is_none")]
pub id: Option<serde_json::Value>,
/// Result of the request if it was successful.
#[serde(skip_serializing_if = "Option::is_none")]
pub result: Option<serde_json::Value>,
/// Error object if the request failed.
#[serde(skip_serializing_if = "Option::is_none")]
pub error: Option<Error>,
}
/// Notification represents a JSON-RPC notification message.
#[derive(Debug, Serialize, Deserialize)]
pub struct Notification {
/// JSON-RPC version, typically "2.0".
pub jsonrpc: String,
/// The name of the method to be invoked.
pub method: String,
/// Optional parameters for the method.
#[serde(skip_serializing_if = "Option::is_none")]
pub params: Option<serde_json::Value>,
}
/// NotificationResult represents the result of a subscription notification.
/// It includes the result and the subscription ID that triggered the notification.
#[derive(Debug, Serialize, Deserialize)]
pub struct NotificationResult {
/// Optional data about the notification.
pub result: Option<serde_json::Value>,
/// ID of the subscription that triggered the notification.
pub subscription: SubscriptionID,
}
// Error represents an error in a JSON-RPC response.
// It includes an error code, a message, and optional additional data.
#[derive(Debug, Serialize, Deserialize)]
pub struct Error {
/// Error code indicating the type of error.
pub code: i32,
/// Human-readable error message.
pub message: String,
/// Optional additional data about the error.
#[serde(skip_serializing_if = "Option::is_none")]
pub data: Option<serde_json::Value>,
}
impl std::fmt::Display for Request {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{{jsonrpc: {}, method: {}, params: {:?}, id: {:?}}}",
self.jsonrpc, self.method, self.params, self.id,
)
}
}
impl std::fmt::Display for Response {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{{jsonrpc: {}, result': {:?}, error: {:?} , id: {:?}}}",
self.jsonrpc, self.result, self.error, self.id,
)
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"RpcError {{ code: {}, message: {}, data: {:?} }} ",
self.code, self.message, self.data
)
}
}
impl std::fmt::Display for Notification {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
f,
"{{jsonrpc: {}, method: {:?}, params: {:?}}}",
self.jsonrpc, self.method, self.params
)
}
}
impl Default for Response {
fn default() -> Self {
Self {
jsonrpc: JSONRPC_VERSION.to_string(),
error: None,
id: None,
result: None,
}
}
}
impl RPCError {
pub fn to_response(
&self,
id: Option<serde_json::Value>,
data: Option<serde_json::Value>,
) -> Response {
let err: Error = match self {
RPCError::ParseError(msg) => Error {
code: PARSE_ERROR_CODE,
message: msg.to_string(),
data,
},
RPCError::InvalidParams(msg) => Error {
code: INVALID_PARAMS_ERROR_CODE,
message: msg.to_string(),
data,
},
RPCError::InvalidRequest(msg) => Error {
code: INVALID_REQUEST_ERROR_CODE,
message: msg.to_string(),
data,
},
RPCError::CustomError(code, msg) => Error {
code: *code,
message: msg.to_string(),
data,
},
RPCError::InternalError => Error {
code: INTERNAL_ERROR_CODE,
message: INTERNAL_ERROR_MSG.to_string(),
data,
},
};
Response {
jsonrpc: JSONRPC_VERSION.to_string(),
error: Some(err),
result: None,
id,
}
}
}
|
