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package org.apache.james.backends.cassandra;

import java.io.IOException;
import java.time.Duration;
import java.util.concurrent.TimeUnit;

import org.rnorth.ducttape.unreliables.Unreliables;
import org.testcontainers.containers.GenericContainer;
import org.testcontainers.containers.wait.strategy.WaitStrategy;
import org.testcontainers.containers.wait.strategy.WaitStrategyTarget;

import com.google.common.primitives.Ints;

public class CassandraWaitStrategy implements WaitStrategy {

    private static final Duration DEFAULT_TIMEOUT = Duration.ofMinutes(2);
    private final GenericContainer<?> cassandraContainer;
    private final Duration timeout;

    public CassandraWaitStrategy(GenericContainer<?> cassandraContainer) {
        this(cassandraContainer, DEFAULT_TIMEOUT);
    }

    public CassandraWaitStrategy(GenericContainer<?> cassandraContainer, Duration timeout) {
        this.cassandraContainer = cassandraContainer;
        this.timeout = timeout;
    }

    @Override
    public void waitUntilReady(WaitStrategyTarget waitStrategyTarget) {
        Unreliables.retryUntilTrue(Ints.checkedCast(timeout.getSeconds()), TimeUnit.SECONDS, () -> {
                try {
                    return cassandraContainer
                        .execInContainer("cqlsh", "-u", "cassandra", "-p", "cassandra", "-e", "show host")
                        .getStdout()
                        .contains("Connected to Test Cluster");
                } catch (IOException | InterruptedException e) {
                    return false;
                }
            }
        );
    }

    @Override
    public WaitStrategy withStartupTimeout(Duration startupTimeout) {
        return new CassandraWaitStrategy(cassandraContainer, startupTimeout);
    }
}
