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SDK to develop generators part of the Sixpack solution

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package dev.sixpack.api.rpc;

import dev.sixpack.api.data.Request;
import dev.sixpack.api.data.Result;
import io.temporal.common.RetryOptions;
import io.temporal.workflow.ChildWorkflowOptions;
import io.temporal.workflow.WorkflowInterface;
import io.temporal.workflow.WorkflowMethod;

import java.time.Duration;

import static dev.sixpack.api.rpc.NormalisationUtils.safe;
import static io.temporal.api.enums.v1.ParentClosePolicy.PARENT_CLOSE_POLICY_TERMINATE;
import static io.temporal.api.enums.v1.WorkflowIdReusePolicy.WORKFLOW_ID_REUSE_POLICY_ALLOW_DUPLICATE;
import static java.time.Duration.ofMinutes;

@WorkflowInterface
public interface GenerationW {

    static ChildWorkflowOptions childOptions(String environment,
                                             String supplier,
                                             String item,
                                             String id,
                                             int iteration) {
        return ChildWorkflowOptions.newBuilder()
                .setParentClosePolicy(PARENT_CLOSE_POLICY_TERMINATE)
                .setTaskQueue(safe(environment + "_" + supplier + "_" + item))
                .setWorkflowId(id + "_" + iteration)
                .setWorkflowIdReusePolicy(WORKFLOW_ID_REUSE_POLICY_ALLOW_DUPLICATE)
                .setRetryOptions(RetryOptions.newBuilder()
                        .setInitialInterval(Duration.ofSeconds(30))
                        .setBackoffCoefficient(2D)
                        .setMaximumInterval(ofMinutes(2))
                        .setMaximumAttempts(5)
                        .validateBuildWithDefaults())
                .validateAndBuildWithDefaults();
    }

    @WorkflowMethod
    Result generate(Request request);

}