Examples with CommandGetSchema org.apache.pulsar.common.api.proto.CommandGetSchema used on opensource projects

Example 1 with CommandGetSchema

use of org.apache.pulsar.common.api.proto.CommandGetSchema in project pulsar by apache.

the class ServerCnx method handleGetSchema.

@Override
protected void handleGetSchema(CommandGetSchema commandGetSchema) {
    if (log.isDebugEnabled()) {
        if (commandGetSchema.hasSchemaVersion()) {
            log.debug("Received CommandGetSchema call from {}, schemaVersion: {}, topic: {}, requestId: {}", remoteAddress, new String(commandGetSchema.getSchemaVersion()), commandGetSchema.getTopic(), commandGetSchema.getRequestId());
        } else {
            log.debug("Received CommandGetSchema call from {}, schemaVersion: {}, topic: {}, requestId: {}", remoteAddress, null, commandGetSchema.getTopic(), commandGetSchema.getRequestId());
        }
    }
    long requestId = commandGetSchema.getRequestId();
    SchemaVersion schemaVersion = SchemaVersion.Latest;
    if (commandGetSchema.hasSchemaVersion()) {
        if (commandGetSchema.getSchemaVersion().length == 0) {
            commandSender.sendGetSchemaErrorResponse(requestId, ServerError.IncompatibleSchema, "Empty schema version");
            return;
        }
        schemaVersion = schemaService.versionFromBytes(commandGetSchema.getSchemaVersion());
    }
    String schemaName;
    try {
        schemaName = TopicName.get(commandGetSchema.getTopic()).getSchemaName();
    } catch (Throwable t) {
        commandSender.sendGetSchemaErrorResponse(requestId, ServerError.InvalidTopicName, t.getMessage());
        return;
    }
    schemaService.getSchema(schemaName, schemaVersion).thenAccept(schemaAndMetadata -> {
        if (schemaAndMetadata == null) {
            commandSender.sendGetSchemaErrorResponse(requestId, ServerError.TopicNotFound, "Topic not found or no-schema");
        } else {
            commandSender.sendGetSchemaResponse(requestId, SchemaInfoUtil.newSchemaInfo(schemaName, schemaAndMetadata.schema), schemaAndMetadata.version);
        }
    }).exceptionally(ex -> {
        commandSender.sendGetSchemaErrorResponse(requestId, ServerError.UnknownError, ex.getMessage());
        return null;
    });
}

Example 2 with CommandGetSchema

use of org.apache.pulsar.common.api.proto.CommandGetSchema in project pulsar by apache.

the class LookupProxyHandler method handleGetSchema.

public void handleGetSchema(CommandGetSchema commandGetSchema) {
    GET_SCHEMA_REQUESTS.inc();
    if (log.isDebugEnabled()) {
        log.debug("[{}] Received GetSchema {}", clientAddress, commandGetSchema);
    }
    final long clientRequestId = commandGetSchema.getRequestId();
    String serviceUrl = getBrokerServiceUrl(clientRequestId);
    String topic = commandGetSchema.getTopic();
    Optional<SchemaVersion> schemaVersion;
    if (commandGetSchema.hasSchemaVersion()) {
        schemaVersion = Optional.of(commandGetSchema.getSchemaVersion()).map(BytesSchemaVersion::of);
    } else {
        schemaVersion = Optional.empty();
    }
    if (!StringUtils.isNotBlank(serviceUrl)) {
        return;
    }
    InetSocketAddress addr = getAddr(serviceUrl, clientRequestId);
    if (addr == null) {
        return;
    }
    if (log.isDebugEnabled()) {
        log.debug("Getting connections to '{}' for getting schema of topic '{}' with clientReq Id '{}'", addr, topic, clientRequestId);
    }
    proxyConnection.getConnectionPool().getConnection(addr).thenAccept(clientCnx -> {
        // Connected to backend broker
        long requestId = proxyConnection.newRequestId();
        ByteBuf command;
        command = Commands.newGetSchema(requestId, topic, schemaVersion);
        clientCnx.sendGetRawSchema(command, requestId).whenComplete((r, t) -> {
            if (t != null) {
                log.warn("[{}] Failed to get schema {}: {}", clientAddress, topic, t);
                proxyConnection.ctx().writeAndFlush(Commands.newError(clientRequestId, ServerError.ServiceNotReady, t.getMessage()));
            } else {
                proxyConnection.ctx().writeAndFlush(Commands.newGetSchemaResponse(clientRequestId, r));
            }
            proxyConnection.getConnectionPool().releaseConnection(clientCnx);
        });
    }).exceptionally(ex -> {
        // Failed to connect to backend broker
        proxyConnection.ctx().writeAndFlush(Commands.newError(clientRequestId, ServerError.ServiceNotReady, ex.getMessage()));
        return null;
    });
}

Example 3 with CommandGetSchema

use of org.apache.pulsar.common.api.proto.CommandGetSchema in project pulsar by apache.

the class Commands method newGetSchema.

public static ByteBuf newGetSchema(long requestId, String topic, Optional<SchemaVersion> version) {
    BaseCommand cmd = localCmd(Type.GET_SCHEMA);
    CommandGetSchema schema = cmd.setGetSchema().setRequestId(requestId).setTopic(topic);
    version.ifPresent(schemaVersion -> schema.setSchemaVersion(schemaVersion.bytes()));
    return serializeWithSize(cmd);
}