com.palantir.atlasdb.cli.command.TimestampCommand.java Source code

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Here is the source code for com.palantir.atlasdb.cli.command.TimestampCommand.java

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/**
 * Copyright 2015 Palantir Technologies
 *
 * Licensed under the BSD-3 License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://opensource.org/licenses/BSD-3-Clause
 *
 * 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.cli.command;

import org.joda.time.DateTime;
import org.joda.time.format.ISODateTimeFormat;

import com.palantir.atlasdb.cleaner.KeyValueServicePuncherStore;
import com.palantir.atlasdb.cli.services.AtlasDbServices;

import io.airlift.airline.Command;
import io.airlift.airline.Option;

@Command(name = "timestamp", description = "Get timestamp information")
public class TimestampCommand extends SingleBackendCommand {

    @Option(name = { "-f", "--fresh" }, description = "Get a fresh timestamp")
    private boolean fresh;

    @Option(name = { "-i", "--immutable" }, description = "Get the current immutable timestamp")
    private boolean immutable;

    @Option(name = { "-d",
            "--date-time" }, description = "Return the earliest approximate wall clock time at which the immutable timestamp"
                    + " could have been used in a transaction.  Requires --immutable to be set")
    private boolean dateTime;

    @Override
    public int execute(AtlasDbServices services) {
        if (dateTime && !immutable) {
            System.err.println("You can't use --date-time without also using --immutable");
            return 1;
        }

        long latestTimestamp = services.getTimestampService().getFreshTimestamp();

        if (fresh || !(fresh || immutable)) {
            System.out.println("Fresh timestamp is: " + latestTimestamp);
        }

        if (immutable) {
            long immutableTimestamp = services.getTransactionManager().getImmutableTimestamp();
            System.out.println("Current immutable timestamp is: " + immutableTimestamp);

            if (dateTime) {
                long timeMillis = KeyValueServicePuncherStore.getMillisForTimestamp(services.getKeyValueService(),
                        immutableTimestamp);
                DateTime dt = new DateTime(timeMillis);
                String stringTime = ISODateTimeFormat.dateTimeNoMillis().print(dt);
                System.out.printf("Real date time of immutable timestamp is: " + stringTime);
            }
        }

        return 0;
    }
}