Examples with Stat org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat used on opensource projects

Example 56 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project camel by apache.

the class ExistsOperation method getResult.

@Override
public OperationResult<String> getResult() {
    try {
        Stat statistics = connection.exists(node, true);
        boolean ok = isOk(statistics);
        if (LOG.isTraceEnabled()) {
            LOG.trace(ok ? "node exists" : "node does not exist");
        }
        return new OperationResult<String>(node, statistics, ok);
    } catch (Exception e) {
        return new OperationResult<String>(e);
    }
}

Example 57 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project pulsar by yahoo.

the class BrokerService method updateDynamicServiceConfiguration.

private void updateDynamicServiceConfiguration() {
    try {
        Optional<Map<String, String>> data = dynamicConfigurationCache.get(BROKER_SERVICE_CONFIGURATION_PATH);
        if (data.isPresent() && data.get() != null) {
            data.get().forEach((key, value) -> {
                try {
                    Field field = ServiceConfiguration.class.getDeclaredField(key);
                    if (field != null && field.isAnnotationPresent(FieldContext.class)) {
                        field.setAccessible(true);
                        field.set(pulsar().getConfiguration(), FieldParser.value(value, field));
                        log.info("Successfully updated {}/{}", key, value);
                    }
                } catch (Exception e) {
                    log.warn("Failed to update service configuration {}/{}, {}", key, value, e.getMessage());
                }
            });
        }
        // register a listener: it updates field value and triggers appropriate registered field-listener only if
        // field's value has been changed so, registered doesn't have to update field value in ServiceConfiguration
        dynamicConfigurationCache.registerListener(new ZooKeeperCacheListener<Map<String, String>>() {

            @SuppressWarnings("unchecked")
            @Override
            public void onUpdate(String path, Map<String, String> data, Stat stat) {
                if (BROKER_SERVICE_CONFIGURATION_PATH.equalsIgnoreCase(path) && data != null) {
                    data.forEach((configKey, value) -> {
                        Field configField = dynamicConfigurationMap.get(configKey);
                        Object newValue = FieldParser.value(data.get(configKey), configField);
                        if (configField != null) {
                            Consumer listener = configRegisteredListeners.get(configKey);
                            try {
                                Object existingValue = configField.get(pulsar.getConfiguration());
                                configField.set(pulsar.getConfiguration(), newValue);
                                log.info("Successfully updated configuration {}/{}", configKey, data.get(configKey));
                                if (listener != null && !existingValue.equals(newValue)) {
                                    listener.accept(newValue);
                                }
                            } catch (Exception e) {
                                log.error("Failed to update config {}/{}", configKey, newValue);
                            }
                        } else {
                            log.error("Found non-dynamic field in dynamicConfigMap {}/{}", configKey, newValue);
                        }
                    });
                }
            }
        });
    } catch (Exception e) {
        log.warn("Failed to read zookeeper path [{}]:", BROKER_SERVICE_CONFIGURATION_PATH, e);
    }
}

Example 58 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project pulsar by yahoo.

the class Namespaces method setRetention.

@POST
@Path("/{property}/{cluster}/{namespace}/retention")
@ApiOperation(value = " Set retention configuration on a namespace.")
@ApiResponses(value = { @ApiResponse(code = 403, message = "Don't have admin permission"), @ApiResponse(code = 404, message = "Namespace does not exist"), @ApiResponse(code = 409, message = "Concurrent modification"), @ApiResponse(code = 412, message = "Retention Quota must exceed backlog quota") })
public void setRetention(@PathParam("property") String property, @PathParam("cluster") String cluster, @PathParam("namespace") String namespace, RetentionPolicies retention) {
    validatePoliciesReadOnlyAccess();
    try {
        Stat nodeStat = new Stat();
        final String path = path("policies", property, cluster, namespace);
        byte[] content = globalZk().getData(path, null, nodeStat);
        Policies policies = jsonMapper().readValue(content, Policies.class);
        if (!checkQuotas(policies, retention)) {
            log.warn("[{}] Failed to update retention configuration for namespace {}/{}/{}: conflicts with backlog quota", clientAppId(), property, cluster, namespace);
            throw new RestException(Status.PRECONDITION_FAILED, "Retention Quota must exceed configured backlog quota for namespace.");
        }
        policies.retention_policies = retention;
        globalZk().setData(path, jsonMapper().writeValueAsBytes(policies), nodeStat.getVersion());
        policiesCache().invalidate(path("policies", property, cluster, namespace));
        log.info("[{}] Successfully updated retention configuration: namespace={}/{}/{}, map={}", clientAppId(), property, cluster, namespace, jsonMapper().writeValueAsString(policies.retention_policies));
    } catch (KeeperException.NoNodeException e) {
        log.warn("[{}] Failed to update retention configuration for namespace {}/{}/{}: does not exist", clientAppId(), property, cluster, namespace);
        throw new RestException(Status.NOT_FOUND, "Namespace does not exist");
    } catch (KeeperException.BadVersionException e) {
        log.warn("[{}] Failed to update retention configuration for namespace {}/{}/{}: concurrent modification", clientAppId(), property, cluster, namespace);
        throw new RestException(Status.CONFLICT, "Concurrent modification");
    } catch (RestException pfe) {
        throw pfe;
    } catch (Exception e) {
        log.error("[{}] Failed to update retention configuration for namespace {}/{}/{}", clientAppId(), property, cluster, namespace, e);
        throw new RestException(e);
    }
}

Example 59 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project pulsar by yahoo.

the class Namespaces method deleteNamespace.

@DELETE
@Path("/{property}/{cluster}/{namespace}")
@ApiOperation(value = "Delete a namespace and all the destinations under it.")
@ApiResponses(value = { @ApiResponse(code = 403, message = "Don't have admin permission"), @ApiResponse(code = 404, message = "Property or cluster or namespace doesn't exist"), @ApiResponse(code = 409, message = "Namespace is not empty") })
public void deleteNamespace(@PathParam("property") String property, @PathParam("cluster") String cluster, @PathParam("namespace") String namespace, @QueryParam("authoritative") @DefaultValue("false") boolean authoritative) {
    NamespaceName nsName = new NamespaceName(property, cluster, namespace);
    validateAdminAccessOnProperty(property);
    validatePoliciesReadOnlyAccess();
    // ensure that non-global namespace is directed to the correct cluster
    validateClusterOwnership(cluster);
    Entry<Policies, Stat> policiesNode = null;
    Policies policies = null;
    // ensure the local cluster is the only cluster for the global namespace configuration
    try {
        policiesNode = policiesCache().getWithStat(path("policies", property, cluster, namespace)).orElseThrow(() -> new RestException(Status.NOT_FOUND, "Namespace " + nsName + " does not exist."));
        policies = policiesNode.getKey();
        if (cluster.equals(Namespaces.GLOBAL_CLUSTER)) {
            if (policies.replication_clusters.size() > 1) {
                // There are still more than one clusters configured for the global namespace
                throw new RestException(Status.PRECONDITION_FAILED, "Cannot delete the global namespace " + nsName + ". There are still more than one replication clusters configured.");
            }
            if (policies.replication_clusters.size() == 1 && !policies.replication_clusters.contains(config().getClusterName())) {
                // the only replication cluster is other cluster, redirect
                String replCluster = policies.replication_clusters.get(0);
                ClusterData replClusterData = clustersCache().get(AdminResource.path("clusters", replCluster)).orElseThrow(() -> new RestException(Status.NOT_FOUND, "Cluser " + replCluster + " does not exist"));
                URL replClusterUrl;
                if (!config().isTlsEnabled()) {
                    replClusterUrl = new URL(replClusterData.getServiceUrl());
                } else if (!replClusterData.getServiceUrlTls().isEmpty()) {
                    replClusterUrl = new URL(replClusterData.getServiceUrlTls());
                } else {
                    throw new RestException(Status.PRECONDITION_FAILED, "The replication cluster does not provide TLS encrypted service");
                }
                URI redirect = UriBuilder.fromUri(uri.getRequestUri()).host(replClusterUrl.getHost()).port(replClusterUrl.getPort()).replaceQueryParam("authoritative", false).build();
                log.debug("[{}] Redirecting the rest call to {}: cluster={}", clientAppId(), redirect, cluster);
                throw new WebApplicationException(Response.temporaryRedirect(redirect).build());
            }
        }
    } catch (WebApplicationException wae) {
        throw wae;
    } catch (Exception e) {
        throw new RestException(e);
    }
    List<String> destinations = getDestinations(property, cluster, namespace);
    if (!destinations.isEmpty()) {
        log.info("Found destinations: {}", destinations);
        throw new RestException(Status.CONFLICT, "Cannot delete non empty namespace");
    }
    // set the policies to deleted so that somebody else cannot acquire this namespace
    try {
        policies.deleted = true;
        globalZk().setData(path("policies", property, cluster, namespace), jsonMapper().writeValueAsBytes(policies), policiesNode.getValue().getVersion());
        policiesCache().invalidate(path("policies", property, cluster, namespace));
    } catch (Exception e) {
        log.error("[{}] Failed to delete namespace on global ZK {}/{}/{}", clientAppId(), property, cluster, namespace, e);
        throw new RestException(e);
    }
    // remove from owned namespace map and ephemeral node from ZK
    try {
        NamespaceBundles bundles = pulsar().getNamespaceService().getNamespaceBundleFactory().getBundles(nsName);
        for (NamespaceBundle bundle : bundles.getBundles()) {
            // check if the bundle is owned by any broker, if not then we do not need to delete the bundle
            if (pulsar().getNamespaceService().getOwner(bundle).isPresent()) {
                pulsar().getAdminClient().namespaces().deleteNamespaceBundle(nsName.toString(), bundle.getBundleRange());
            }
        }
        // we have successfully removed all the ownership for the namespace, the policies znode can be deleted now
        globalZk().delete(path("policies", property, cluster, namespace), -1);
        policiesCache().invalidate(path("policies", property, cluster, namespace));
    } catch (PulsarAdminException cae) {
        throw new RestException(cae);
    } catch (Exception e) {
        log.error(String.format("[%s] Failed to remove owned namespace %s/%s/%s", clientAppId(), property, cluster, namespace), e);
    // avoid throwing exception in case of the second failure
    }
}

Example 60 with Stat

use of org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.data.Stat in project pulsar by yahoo.

the class Namespaces method setPersistence.

@POST
@Path("/{property}/{cluster}/{namespace}/persistence")
@ApiOperation(value = "Set the persistence configuration for all the destinations on a namespace.")
@ApiResponses(value = { @ApiResponse(code = 403, message = "Don't have admin permission"), @ApiResponse(code = 404, message = "Namespace does not exist"), @ApiResponse(code = 409, message = "Concurrent modification") })
public void setPersistence(@PathParam("property") String property, @PathParam("cluster") String cluster, @PathParam("namespace") String namespace, PersistencePolicies persistence) {
    validatePoliciesReadOnlyAccess();
    try {
        Stat nodeStat = new Stat();
        final String path = path("policies", property, cluster, namespace);
        byte[] content = globalZk().getData(path, null, nodeStat);
        Policies policies = jsonMapper().readValue(content, Policies.class);
        policies.persistence = persistence;
        globalZk().setData(path, jsonMapper().writeValueAsBytes(policies), nodeStat.getVersion());
        policiesCache().invalidate(path("policies", property, cluster, namespace));
        log.info("[{}] Successfully updated persistence configuration: namespace={}/{}/{}, map={}", clientAppId(), property, cluster, namespace, jsonMapper().writeValueAsString(policies.persistence));
    } catch (KeeperException.NoNodeException e) {
        log.warn("[{}] Failed to update persistence configuration for namespace {}/{}/{}: does not exist", clientAppId(), property, cluster, namespace);
        throw new RestException(Status.NOT_FOUND, "Namespace does not exist");
    } catch (KeeperException.BadVersionException e) {
        log.warn("[{}] Failed to update persistence configuration for namespace {}/{}/{}: concurrent modification", clientAppId(), property, cluster, namespace);
        throw new RestException(Status.CONFLICT, "Concurrent modification");
    } catch (Exception e) {
        log.error("[{}] Failed to update persistence configuration for namespace {}/{}/{}", clientAppId(), property, cluster, namespace, e);
        throw new RestException(e);
    }
}