use super::{chunk::get_large_registry_value, decode_message};
use crate::ic_registry::{
RegistryFetchError,
proto::{
RegistryErrorCode, RegistryGetValueRequest, RegistryGetValueResponse, UInt64Value,
registry_get_value_response,
},
wire::RegistryValueContent,
};
use ic_agent::Agent;
use prost::Message;
pub(in crate::ic_registry) async fn get_registry_value(
agent: &Agent,
registry_canister: &candid::Principal,
key: &str,
version: u64,
) -> Result<Vec<u8>, RegistryFetchError> {
let request = RegistryGetValueRequest {
version: Some(UInt64Value { value: version }),
key: key.as_bytes().to_vec(),
};
let mut arg = Vec::new();
request
.encode(&mut arg)
.map_err(|err| RegistryFetchError::ProtobufEncode {
message: "RegistryGetValueRequest",
reason: err.to_string(),
})?;
let bytes = agent
.query(registry_canister, "get_value")
.with_arg(arg)
.call()
.await
.map_err(|err| RegistryFetchError::AgentCall {
method: "get_value",
reason: err.to_string(),
})?;
let response = decode_message::<RegistryGetValueResponse>("RegistryGetValueResponse", &bytes)?;
match registry_value_content_from_response(key, response)? {
RegistryValueContent::Value(value) => Ok(value),
RegistryValueContent::LargeValueChunkKeys(keys) => {
get_large_registry_value(agent, registry_canister, &keys.chunk_content_sha256s).await
}
}
}
pub(in crate::ic_registry) fn registry_value_content_from_response(
key: &str,
response: RegistryGetValueResponse,
) -> Result<RegistryValueContent, RegistryFetchError> {
if let Some(error) = response.error {
return Err(RegistryFetchError::RegistryValue {
key: key.to_string(),
code: registry_error_code(error.code).to_string(),
reason: error.reason,
});
}
match response.content {
Some(registry_get_value_response::Content::Value(value)) => {
Ok(RegistryValueContent::Value(value))
}
Some(registry_get_value_response::Content::LargeValueChunkKeys(keys)) => {
Ok(RegistryValueContent::LargeValueChunkKeys(keys))
}
None => Err(RegistryFetchError::MissingValue {
key: key.to_string(),
}),
}
}
fn registry_error_code(code: i32) -> &'static str {
match RegistryErrorCode::try_from(code).ok() {
Some(RegistryErrorCode::MalformedMessage) => "malformed_message",
Some(RegistryErrorCode::KeyNotPresent) => "key_not_present",
Some(RegistryErrorCode::KeyAlreadyPresent) => "key_already_present",
Some(RegistryErrorCode::VersionNotLatest) => "version_not_latest",
Some(RegistryErrorCode::VersionBeyondLatest) => "version_beyond_latest",
Some(RegistryErrorCode::Authorization) => "authorization",
Some(RegistryErrorCode::InternalError) => "internal_error",
None => "unknown",
}
}