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 *    Copyright (c) [2019] Payara Foundation and/or its affiliates. All rights reserved.
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package org.glassfish.internal.deployment.analysis;

/**
 * Helper class for creating sequence of non-overlapping events
 */
public class SpanSequence implements AutoCloseable {
    private final StructuredDeploymentTracing tracing;
    private DeploymentSpan currentSpan;

    SpanSequence(StructuredDeploymentTracing tracing, DeploymentSpan initialSpan) {
        this.tracing = tracing;
        this.currentSpan = initialSpan;
    }

    public SpanSequence start(Enum action) {
        return start(action, null);
    }

    public SpanSequence finish() {
        this.currentSpan.close();
        return this;
    }

    public SpanSequence start(Enum action, String componentName) {
        this.currentSpan.close();
        this.currentSpan = tracing.startSpan(action, componentName);
        return this;
    }

    public SpanSequence start(String componentName) {
        return start(this.currentSpan.getAction(), componentName);
    }

    public DeploymentSpan nest(Enum action) {
        return nest(action, null);
    }

    public DeploymentSpan nest(Enum action, String componentName) {
        return tracing.startSpan(action, componentName);
    }

    @Override
    public void close()  {
        this.currentSpan.close();
    }
}