Enum mz_adapter::command::Command

source · 
pub enum Command {

Show 14 variants    CatalogSnapshot {
        tx: Sender<CatalogSnapshot>,
    },
    Startup {
        tx: Sender<Result<StartupResponse, AdapterError>>,
        user: User,
        conn_id: ConnectionId,
        secret_key: u32,
        uuid: Uuid,
        application_name: String,
        notice_tx: UnboundedSender<AdapterNotice>,
    },
    Execute {
        portal_name: String,
        session: Session,
        tx: Sender<Response<ExecuteResponse>>,
        outer_ctx_extra: Option<ExecuteContextExtra>,
    },
    Commit {
        action: EndTransactionAction,
        session: Session,
        tx: Sender<Response<ExecuteResponse>>,
    },
    CancelRequest {
        conn_id: ConnectionIdType,
        secret_key: u32,
    },
    PrivilegedCancelRequest {
        conn_id: ConnectionId,
    },
    GetWebhook {
        database: String,
        schema: String,
        name: String,
        tx: Sender<Result<AppendWebhookResponse, AppendWebhookError>>,
    },
    GetSystemVars {
        conn_id: ConnectionId,
        tx: Sender<Result<GetVariablesResponse, AdapterError>>,
    },
    SetSystemVars {
        vars: BTreeMap<String, String>,
        conn_id: ConnectionId,
        tx: Sender<Result<(), AdapterError>>,
    },
    Terminate {
        conn_id: ConnectionId,
        tx: Option<Sender<Result<(), AdapterError>>>,
    },
    RetireExecute {
        data: ExecuteContextExtra,
        reason: StatementEndedExecutionReason,
    },
    CheckConsistency {
        tx: Sender<Result<(), CoordinatorInconsistencies>>,
    },
    Dump {
        tx: Sender<Result<Value, Error>>,
    },
    AllowWrites {
        tx: Sender<Result<bool, Error>>,
    },

}

Variants§

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CatalogSnapshot

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Startup

Fields

§tx: Sender<Result<StartupResponse, AdapterError>>
§user: User
§conn_id: ConnectionId
§secret_key: u32
§uuid: Uuid
§application_name: String
§notice_tx: UnboundedSender<AdapterNotice>
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Execute

Fields

§portal_name: String
§session: Session
§tx: Sender<Response<ExecuteResponse>>
§outer_ctx_extra: Option<ExecuteContextExtra>
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Commit

Attempts to commit or abort the session’s transaction. Guarantees that the Coordinator’s transaction state has been cleared, even if the commit or abort fails. (A failure can happen, for example, if the session’s role id has been dropped which will prevent sequence_end_transaction from running.)

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CancelRequest

Fields

§conn_id: ConnectionIdType
§secret_key: u32
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PrivilegedCancelRequest

Fields

§conn_id: ConnectionId
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GetWebhook

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GetSystemVars

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SetSystemVars

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Terminate

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RetireExecute

Performs any cleanup and logging actions necessary for finalizing a statement execution.

Only used for cases that terminate in the protocol layer and otherwise have no reason to hand control back to the coordinator. In other cases, we piggy-back on another command.

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CheckConsistency

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Dump

Fields

§tx: Sender<Result<Value, Error>>
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AllowWrites

Fields

§tx: Sender<Result<bool, Error>>

Implementations§

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impl Command

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pub fn session(&self) -> Option<&Session>

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pub fn session_mut(&mut self) -> Option<&mut Session>

Trait Implementations§

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impl Debug for Command

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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