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From aledsage <...@git.apache.org>
Subject [GitHub] incubator-brooklyn pull request: Couchbase sync gateway
Date Wed, 09 Jul 2014 10:10:32 GMT
Github user aledsage commented on a diff in the pull request:

    https://github.com/apache/incubator-brooklyn/pull/25#discussion_r14702145
  
    --- Diff: software/nosql/src/main/java/brooklyn/entity/nosql/couchbase/CouchbaseSyncGatewaySshDriver.java
---
    @@ -0,0 +1,158 @@
    +package brooklyn.entity.nosql.couchbase;
    +
    +import static brooklyn.util.ssh.BashCommands.INSTALL_CURL;
    +import static brooklyn.util.ssh.BashCommands.alternatives;
    +import static brooklyn.util.ssh.BashCommands.chainGroup;
    +import static brooklyn.util.ssh.BashCommands.sudo;
    +import static java.lang.String.format;
    +
    +import java.util.List;
    +
    +import javax.annotation.Nullable;
    +
    +import brooklyn.entity.Entity;
    +import brooklyn.entity.basic.AbstractSoftwareProcessSshDriver;
    +import brooklyn.entity.basic.Entities;
    +import brooklyn.entity.basic.EntityLocal;
    +import brooklyn.entity.drivers.downloads.DownloadResolver;
    +import brooklyn.event.basic.DependentConfiguration;
    +import brooklyn.location.OsDetails;
    +import brooklyn.location.basic.SshMachineLocation;
    +import brooklyn.util.collections.MutableMap;
    +import brooklyn.util.ssh.BashCommands;
    +import brooklyn.util.time.Duration;
    +import brooklyn.util.time.Time;
    +
    +import com.google.common.base.Optional;
    +import com.google.common.base.Predicate;
    +import com.google.common.base.Predicates;
    +import com.google.common.collect.ImmutableList;
    +import com.google.common.collect.ImmutableMap;
    +import com.google.common.collect.Iterables;
    +
    +public class CouchbaseSyncGatewaySshDriver extends AbstractSoftwareProcessSshDriver implements
CouchbaseSyncGatewayDriver {
    +    public CouchbaseSyncGatewaySshDriver(EntityLocal entity, SshMachineLocation machine)
{
    +        super(entity, machine);
    +    }
    +
    +    @Override
    +    public void stop() {
    +
    +    }
    +
    +    @Override
    +    public void install() {
    +        //reference http://docs.couchbase.com/sync-gateway/#getting-started-with-sync-gateway
    +        DownloadResolver resolver = Entities.newDownloader(this);
    +        List<String> urls = resolver.getTargets();
    +        String saveAs = resolver.getFilename();
    +
    +        OsDetails osDetails = getMachine().getMachineDetails().getOsDetails();
    +
    +        log.info("Installing couchbase-sync-gateway version: {}", getVersion());
    +        if (osDetails.isLinux()) {
    +            List<String> commands = installLinux(urls, saveAs);
    +            newScript(INSTALLING)
    +                    .body.append(commands).execute();
    +        }
    +    }
    +
    +    @Override
    +    public void customize() {
    +
    +    }
    +
    +    @Override
    +    public void launch() {
    +        Entity cbNode = entity.getConfig(CouchbaseSyncGateway.COUCHBASE_SERVER);
    +        Entities.waitForServiceUp(cbNode, Duration.ONE_HOUR);
    +        DependentConfiguration.waitInTaskForAttributeReady(cbNode, CouchbaseCluster.IS_CLUSTER_INITIALIZED,
Predicates.equalTo(true));
    +        // Even once the bucket has published its API URL, it can still take a couple
of seconds for it to become available
    +        Time.sleep(10 * 1000);
    +        if (cbNode instanceof CouchbaseCluster) {
    +            Optional<Entity> cbClusterNode = Iterables.tryFind(cbNode.getAttribute(CouchbaseCluster.GROUP_MEMBERS),
new Predicate<Entity>() {
    +
    +                @Override
    +                public boolean apply(@Nullable Entity entity) {
    +                    if (entity instanceof CouchbaseNode && Boolean.TRUE.equals(entity.getAttribute(CouchbaseNode.IS_IN_CLUSTER)))
{
    +                        return true;
    +                    }
    +                    return false;
    +                }
    +            });
    +            if (cbClusterNode.isPresent()) {
    +                cbNode = cbClusterNode.get();
    +            } else {
    +                throw new IllegalArgumentException(format("The cluster %s does not contain
any suitable Couchbase nodes to connect to..", cbNode.getId()));
    +            }
    +
    +        }
    +        String hostname = cbNode.getAttribute(CouchbaseNode.HOSTNAME);
    +        String webPort = cbNode.getAttribute(CouchbaseNode.COUCHBASE_WEB_ADMIN_PORT).toString();
    +
    +
    +        String username = cbNode.getConfig(CouchbaseNode.COUCHBASE_ADMIN_USERNAME);
    +        String password = cbNode.getConfig(CouchbaseNode.COUCHBASE_ADMIN_PASSWORD);
    +
    +        String bucketName = entity.getConfig(CouchbaseSyncGateway.COUCHBASE_SERVER_BUCKET);
    +        String pool = entity.getConfig(CouchbaseSyncGateway.COUCHBASE_SERVER_POOL);
    +        String pretty = entity.getConfig(CouchbaseSyncGateway.PRETTY) ? "-pretty" : "";
    +        String verbose = entity.getConfig(CouchbaseSyncGateway.VERBOSE) ? "-verbose"
: "";
    +
    +        String adminRestApiPort = entity.getConfig(CouchbaseSyncGateway.ADMIN_REST_API_PORT).iterator().next().toString();
    +        String syncRestApiPort = entity.getConfig(CouchbaseSyncGateway.SYNC_REST_API_PORT).iterator().next().toString();
    +
    +        String serverWebAdminUrl = format("http://%s:%s@%s:%s", username, password, hostname,
webPort);
    +        String options = format("-url %s -bucket %s -adminInterface 0.0.0.0:%s -interface
0.0.0.0:%s -pool %s %s %s",
    +                serverWebAdminUrl, bucketName, adminRestApiPort, syncRestApiPort, pool,
pretty, verbose);
    +
    +        newScript(ImmutableMap.of("usePidFile", true), LAUNCHING)
    +                .body.append(format("/opt/couchbase-sync-gateway/bin/sync_gateway %s
", options) + "> out.log 2> err.log < /dev/null &")
    +                .failOnNonZeroResultCode()
    +                .execute();
    +    }
    +    
    +    @Override
    +    public boolean isRunning() {
    +        return newScript(MutableMap.of("usePidFile", true), CHECK_RUNNING).execute()
== 0;
    +    }
    +    
    +    @Override
    +    public void kill() {
    +        newScript(MutableMap.of("usePidFile", true), KILLING).execute();
    +    }
    +
    +    private List<String> installLinux(List<String> urls, String saveAs) {
    +
    +        String apt = chainGroup(
    +                "which apt-get",
    +                sudo("apt-get update"),
    +                sudo(format("dpkg -i %s", saveAs)));
    +
    +        String yum = chainGroup(
    +                "which yum",
    +                sudo(format("rpm --install %s", saveAs)));
    +
    +        return ImmutableList.<String>builder()
    +                .add(INSTALL_CURL)
    +                .addAll(BashCommands.commandsToDownloadUrlsAs(urls, saveAs))
    +                .add(alternatives(apt, yum))
    --- End diff --
    
    I thought our `BashCommands.installPackage(saveAs)` would do this? However, I don't see
`dpkg` or `rpm` in that list (despite mention in the javadoc of `BashCommands.installExecutable`).
    
    Longer term, would be good to get our `BashCommands.installPackage` to handle dpkg and
rpm as well.


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