syntax = "proto3";

/**
 * Definitions of the different activity tasks returned from [crate::Core::poll_task].
 */
package coresdk.activity_task;
option ruby_package = "Temporalio::Internal::Bridge::Api::ActivityTask";

import "google/protobuf/duration.proto";
import "google/protobuf/timestamp.proto";
import "temporal/api/common/v1/message.proto";
import "temporal/sdk/core/common/common.proto";

message ActivityTask {
    // A unique identifier for this task
    bytes task_token = 1;
    oneof variant {
        // Start activity execution.
        Start start = 3;
        // Attempt to cancel activity execution.
        Cancel cancel = 4;
    }
}

// Begin executing an activity
message Start {
    // The namespace the workflow lives in
    string workflow_namespace = 1;
    // The workflow's type name or function identifier
    string workflow_type = 2;
    // The workflow execution which requested this activity
    temporal.api.common.v1.WorkflowExecution workflow_execution = 3;
    // The activity's ID
    string activity_id = 4;
    // The activity's type name or function identifier
    string activity_type = 5;
    map<string, temporal.api.common.v1.Payload> header_fields = 6;
    // Arguments to the activity
    repeated temporal.api.common.v1.Payload input = 7;
    // The last details that were recorded by a heartbeat when this task was generated
    repeated temporal.api.common.v1.Payload heartbeat_details = 8;
    // When the task was *first* scheduled
    google.protobuf.Timestamp scheduled_time = 9;
    // When this current attempt at the task was scheduled
    google.protobuf.Timestamp current_attempt_scheduled_time = 10;
    // When this attempt was started, which is to say when core received it by polling.
    google.protobuf.Timestamp started_time = 11;
    uint32 attempt = 12;

    // Timeout from the first schedule time to completion
    google.protobuf.Duration schedule_to_close_timeout = 13;
    // Timeout from starting an attempt to reporting its result
    google.protobuf.Duration start_to_close_timeout = 14;
    // If set a heartbeat must be reported within this interval
    google.protobuf.Duration heartbeat_timeout = 15;
    // This is an actual retry policy the service uses. It can be different from the one provided
    // (or not) during activity scheduling as the service can override the provided one in case its
    // values are not specified or exceed configured system limits.
    temporal.api.common.v1.RetryPolicy retry_policy = 16;

    // Set to true if this is a local activity. Note that heartbeating does not apply to local
    // activities.
    bool is_local = 17;
}

// Attempt to cancel a running activity
message Cancel {
    ActivityCancelReason reason = 1;
}

enum ActivityCancelReason {
    // The activity no longer exists according to server (may be already completed)
    NOT_FOUND = 0;
    // Activity was explicitly cancelled
    CANCELLED = 1;
    // Activity timed out
    TIMED_OUT = 2;
    // Core is shutting down and the graceful timeout has elapsed
    WORKER_SHUTDOWN = 3;
}


