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use std::path::PathBuf;
use serde::{Deserialize, Serialize};
use serde_json::Value;
use crate::mcp::telemetry::ServerTelemetry;
pub(crate) const PROTOCOL_VERSION: &str = "2025-11-25";
pub(crate) const SERVER_NAME: &str = "fidget-spinner";
pub(crate) const HOST_STATE_ENV: &str = "FIDGET_SPINNER_MCP_HOST_STATE";
pub(crate) const FORCE_ROLLOUT_ENV: &str = "FIDGET_SPINNER_MCP_TEST_FORCE_ROLLOUT_KEY";
pub(crate) const CRASH_ONCE_ENV: &str = "FIDGET_SPINNER_MCP_TEST_HOST_CRASH_ONCE_KEY";
pub(crate) const TRANSIENT_ONCE_ENV: &str = "FIDGET_SPINNER_MCP_TEST_WORKER_TRANSIENT_ONCE_KEY";
pub(crate) const TRANSIENT_ONCE_MARKER_ENV: &str =
"FIDGET_SPINNER_MCP_TEST_WORKER_TRANSIENT_ONCE_MARKER";
#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq, Serialize)]
pub(crate) struct SessionSeed {
pub initialize_params: Option<Value>,
pub initialized: bool,
}
#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq, Serialize)]
pub(crate) struct HostStateSeed {
pub session: SessionSeed,
pub telemetry: ServerTelemetry,
pub next_request_id: u64,
pub binding: Option<ProjectBindingSeed>,
pub worker_generation: u64,
pub force_rollout_consumed: bool,
pub crash_once_consumed: bool,
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub(crate) struct ProjectBindingSeed {
pub requested_path: PathBuf,
pub project_root: PathBuf,
}
#[derive(Clone, Copy, Debug, Deserialize, Eq, Ord, PartialEq, PartialOrd, Serialize)]
#[serde(transparent)]
pub(crate) struct HostRequestId(pub u64);
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(tag = "kind", rename_all = "snake_case")]
pub(crate) enum WorkerRequest {
Execute {
id: HostRequestId,
operation: WorkerOperation,
},
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(tag = "kind", rename_all = "snake_case")]
pub(crate) enum WorkerOperation {
CallTool { name: String, arguments: Value },
ReadResource { uri: String },
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub(crate) struct WorkerResponse {
pub id: HostRequestId,
pub outcome: WorkerOutcome,
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(tag = "status", rename_all = "snake_case")]
pub(crate) enum WorkerOutcome {
Success {
result: Value,
},
Fault {
fault: crate::mcp::fault::FaultRecord,
},
}
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
pub(crate) struct BinaryFingerprint {
pub length_bytes: u64,
pub modified_unix_nanos: u128,
}
#[derive(Clone, Debug)]
pub(crate) struct WorkerSpawnConfig {
pub executable: PathBuf,
}
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