/*
 * (c) Copyright 2018 Palantir Technologies Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.palantir.atlasdb.containers;

import com.google.common.collect.ImmutableList;
import com.palantir.docker.compose.DockerComposeRule;
import com.palantir.docker.compose.execution.DockerComposeRunArgument;
import com.palantir.docker.compose.execution.ImmutableDockerComposeRunOption;
import com.palantir.logsafe.logger.SafeLogger;
import com.palantir.logsafe.logger.SafeLoggerFactory;
import java.io.IOException;

public class ThreeNodeCassandraClusterOperations {
    private static final SafeLogger log = SafeLoggerFactory.get(ThreeNodeCassandraClusterOperations.class);
    private static final int NODETOOL_STATUS_TIMEOUT_SECONDS = 10;

    private final DockerComposeRule dockerComposeRule;
    private final CassandraCliParser cassandraCliParser;

    public ThreeNodeCassandraClusterOperations(DockerComposeRule dockerComposeRule, CassandraVersion version) {
        this.dockerComposeRule = dockerComposeRule;
        this.cassandraCliParser = new CassandraCliParser(version);
    }

    public boolean nodetoolShowsThreeCassandraNodesUp() {
        try {
            String output = runNodetoolCommand("status", NODETOOL_STATUS_TIMEOUT_SECONDS);
            int numberNodesUp = cassandraCliParser.parseNumberOfUpNodesFromNodetoolStatus(output);
            return numberNodesUp == 3;
        } catch (Exception e) {
            log.warn("Failed while running nodetool status", e);
            return false;
        }
    }

    private String runNodetoolCommand(String nodetoolCommand, int timeoutSeconds)
            throws IOException, InterruptedException {
        return runCommandInCliContainer(
                "timeout",
                Integer.toString(timeoutSeconds),
                "nodetool",
                "--host",
                ThreeNodeCassandraCluster.FIRST_CASSANDRA_CONTAINER_NAME,
                nodetoolCommand);
    }

    private String runCommandInCliContainer(String... arguments) throws IOException, InterruptedException {
        return dockerComposeRule.run(
                ImmutableDockerComposeRunOption.of(ImmutableList.of()),
                ThreeNodeCassandraCluster.CLI_CONTAINER_NAME,
                DockerComposeRunArgument.arguments(arguments));
    }
}
