net.snowflake.ingest.streaming.internal.SnowflakeStreamingIngestClientInternal Maven / Gradle / Ivy
/*
* Copyright (c) 2021 Snowflake Computing Inc. All rights reserved.
*/
package net.snowflake.ingest.streaming.internal;
import static net.snowflake.ingest.connection.ServiceResponseHandler.ApiName.STREAMING_CHANNEL_STATUS;
import static net.snowflake.ingest.connection.ServiceResponseHandler.ApiName.STREAMING_DROP_CHANNEL;
import static net.snowflake.ingest.connection.ServiceResponseHandler.ApiName.STREAMING_OPEN_CHANNEL;
import static net.snowflake.ingest.connection.ServiceResponseHandler.ApiName.STREAMING_REGISTER_BLOB;
import static net.snowflake.ingest.streaming.internal.StreamingIngestUtils.executeWithRetries;
import static net.snowflake.ingest.streaming.internal.StreamingIngestUtils.sleepForRetry;
import static net.snowflake.ingest.utils.Constants.CHANNEL_STATUS_ENDPOINT;
import static net.snowflake.ingest.utils.Constants.COMMIT_MAX_RETRY_COUNT;
import static net.snowflake.ingest.utils.Constants.COMMIT_RETRY_INTERVAL_IN_MS;
import static net.snowflake.ingest.utils.Constants.DROP_CHANNEL_ENDPOINT;
import static net.snowflake.ingest.utils.Constants.ENABLE_TELEMETRY_TO_SF;
import static net.snowflake.ingest.utils.Constants.MAX_STREAMING_INGEST_API_CHANNEL_RETRY;
import static net.snowflake.ingest.utils.Constants.OPEN_CHANNEL_ENDPOINT;
import static net.snowflake.ingest.utils.Constants.REGISTER_BLOB_ENDPOINT;
import static net.snowflake.ingest.utils.Constants.RESPONSE_ERR_ENQUEUE_TABLE_CHUNK_QUEUE_FULL;
import static net.snowflake.ingest.utils.Constants.RESPONSE_ERR_GENERAL_EXCEPTION_RETRY_REQUEST;
import static net.snowflake.ingest.utils.Constants.RESPONSE_SUCCESS;
import static net.snowflake.ingest.utils.Constants.SNOWPIPE_STREAMING_JMX_METRIC_PREFIX;
import static net.snowflake.ingest.utils.Constants.SNOWPIPE_STREAMING_JVM_MEMORY_AND_THREAD_METRICS_REGISTRY;
import static net.snowflake.ingest.utils.Constants.SNOWPIPE_STREAMING_SHARED_METRICS_REGISTRY;
import static net.snowflake.ingest.utils.Constants.STREAMING_INGEST_TELEMETRY_UPLOAD_INTERVAL_IN_SEC;
import static net.snowflake.ingest.utils.Constants.USER;
import com.codahale.metrics.Histogram;
import com.codahale.metrics.Meter;
import com.codahale.metrics.MetricFilter;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.SharedMetricRegistries;
import com.codahale.metrics.Slf4jReporter;
import com.codahale.metrics.Timer;
import com.codahale.metrics.jmx.JmxReporter;
import com.codahale.metrics.jvm.MemoryUsageGaugeSet;
import com.codahale.metrics.jvm.ThreadStatesGaugeSet;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.annotations.VisibleForTesting;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicLong;
import java.util.stream.Collectors;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import net.snowflake.client.core.SFSessionProperty;
import net.snowflake.client.jdbc.internal.apache.http.client.utils.URIBuilder;
import net.snowflake.client.jdbc.internal.apache.http.impl.client.CloseableHttpClient;
import net.snowflake.ingest.connection.IngestResponseException;
import net.snowflake.ingest.connection.OAuthCredential;
import net.snowflake.ingest.connection.RequestBuilder;
import net.snowflake.ingest.connection.TelemetryService;
import net.snowflake.ingest.streaming.DropChannelRequest;
import net.snowflake.ingest.streaming.OpenChannelRequest;
import net.snowflake.ingest.streaming.SnowflakeStreamingIngestChannel;
import net.snowflake.ingest.streaming.SnowflakeStreamingIngestClient;
import net.snowflake.ingest.utils.Constants;
import net.snowflake.ingest.utils.ErrorCode;
import net.snowflake.ingest.utils.HttpUtil;
import net.snowflake.ingest.utils.Logging;
import net.snowflake.ingest.utils.Pair;
import net.snowflake.ingest.utils.ParameterProvider;
import net.snowflake.ingest.utils.SFException;
import net.snowflake.ingest.utils.SnowflakeURL;
import net.snowflake.ingest.utils.Utils;
/**
* The first version of implementation for SnowflakeStreamingIngestClient. The client internally
* manages a few things:
* the channel cache, which contains all the channels that belong to this account
* the flush service, which schedules and coordinates the flush to Snowflake tables
*
* @param type of column data ({@link ParquetChunkData})
*/
public class SnowflakeStreamingIngestClientInternal implements SnowflakeStreamingIngestClient {
private static final Logging logger = new Logging(SnowflakeStreamingIngestClientInternal.class);
// Object mapper for all marshalling and unmarshalling
private static final ObjectMapper objectMapper = new ObjectMapper();
// Counter to generate unique request ids per client
private final AtomicLong counter = new AtomicLong(0);
// Provides constant values that can be set by constructor
private final ParameterProvider parameterProvider;
// Name of the client
private final String name;
// Snowflake role for the client to use
private String role;
// Http client to send HTTP requests to Snowflake
private final CloseableHttpClient httpClient;
// Reference to the channel cache
private final ChannelCache channelCache;
// Reference to the flush service
private final FlushService flushService;
// Indicates whether the client has closed
private volatile boolean isClosed;
// Indicates whether the client is under test mode
private final boolean isTestMode;
// Performance testing related metrics
MetricRegistry metrics;
Histogram blobSizeHistogram; // Histogram for blob size after compression
Histogram blobRowCountHistogram; // Histogram for blob row count
Histogram cpuHistogram; // Histogram for jvm process cpu usage
Timer flushLatency; // Latency for end to end flushing
Timer buildLatency; // Latency for building a blob
Timer uploadLatency; // Latency for uploading a blob
Timer registerLatency; // Latency for registering a blob
Meter uploadThroughput; // Throughput for uploading blobs
Meter inputThroughput; // Throughput for inserting into the internal buffer
// JVM and thread related metrics
MetricRegistry jvmMemoryAndThreadMetrics;
// The request builder who handles building the HttpRequests we send
private RequestBuilder requestBuilder;
// Background thread that uploads telemetry data periodically
private ScheduledExecutorService telemetryWorker;
/**
* Constructor
*
* @param name the name of the client
* @param accountURL Snowflake account url
* @param prop connection properties
* @param httpClient http client for sending request
* @param isTestMode whether we're under test mode
* @param requestBuilder http request builder
* @param parameterOverrides parameters we override in case we want to set different values
*/
SnowflakeStreamingIngestClientInternal(
String name,
SnowflakeURL accountURL,
Properties prop,
CloseableHttpClient httpClient,
boolean isTestMode,
RequestBuilder requestBuilder,
Map parameterOverrides) {
this.parameterProvider = new ParameterProvider(parameterOverrides, prop);
this.name = name;
String accountName = accountURL == null ? null : accountURL.getAccount();
this.isTestMode = isTestMode;
this.httpClient = httpClient == null ? HttpUtil.getHttpClient(accountName) : httpClient;
this.channelCache = new ChannelCache<>();
this.isClosed = false;
this.requestBuilder = requestBuilder;
if (!isTestMode) {
// Setup request builder for communication with the server side
this.role = prop.getProperty(Constants.ROLE);
Object credential = null;
// Authorization type will be set to jwt by default
if (prop.getProperty(Constants.AUTHORIZATION_TYPE).equals(Constants.JWT)) {
try {
credential =
Utils.createKeyPairFromPrivateKey(
(PrivateKey) prop.get(SFSessionProperty.PRIVATE_KEY.getPropertyKey()));
} catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
throw new SFException(e, ErrorCode.KEYPAIR_CREATION_FAILURE);
}
} else {
URI oAuthTokenEndpoint;
try {
if (prop.getProperty(Constants.OAUTH_TOKEN_ENDPOINT) == null) {
// Set OAuth token endpoint to Snowflake OAuth by default
oAuthTokenEndpoint =
new URIBuilder()
.setScheme(accountURL.getScheme())
.setHost(accountURL.getUrlWithoutPort())
.setPort(accountURL.getPort())
.setPath(Constants.SNOWFLAKE_OAUTH_TOKEN_ENDPOINT)
.build();
} else {
oAuthTokenEndpoint = new URI(prop.getProperty(Constants.OAUTH_TOKEN_ENDPOINT));
}
} catch (URISyntaxException e) {
throw new SFException(e, ErrorCode.INVALID_URL);
}
credential =
new OAuthCredential(
prop.getProperty(Constants.OAUTH_CLIENT_ID),
prop.getProperty(Constants.OAUTH_CLIENT_SECRET),
prop.getProperty(Constants.OAUTH_REFRESH_TOKEN),
oAuthTokenEndpoint);
}
this.requestBuilder =
new RequestBuilder(
accountURL,
prop.get(USER).toString(),
credential,
this.httpClient,
String.format("%s_%s", this.name, System.currentTimeMillis()));
logger.logInfo("Using {} for authorization", this.requestBuilder.getAuthType());
// Setup client telemetries if needed
this.setupMetricsForClient();
}
try {
this.flushService = new FlushService<>(this, this.channelCache, this.isTestMode);
} catch (Exception e) {
// Need to clean up the resources before throwing any exceptions
cleanUpResources();
throw e;
}
logger.logInfo(
"Client created, name={}, account={}. isTestMode={}, parameters={}",
name,
accountURL == null ? "" : accountURL.getAccount(),
isTestMode,
parameterProvider);
}
/**
* Default Constructor
*
* @param name the name of the client
* @param accountURL Snowflake account url
* @param prop connection properties
* @param parameterOverrides map of parameters to override for this client
* @param isTestMode indicates whether it's under test mode
*/
public SnowflakeStreamingIngestClientInternal(
String name,
SnowflakeURL accountURL,
Properties prop,
Map parameterOverrides,
boolean isTestMode) {
this(name, accountURL, prop, null, isTestMode, null, parameterOverrides);
}
/*** Constructor for TEST ONLY
*
* @param name the name of the client
*/
SnowflakeStreamingIngestClientInternal(String name) {
this(name, null, null, null, true, null, new HashMap<>());
}
// TESTING ONLY - inject the request builder
@VisibleForTesting
public void injectRequestBuilder(RequestBuilder requestBuilder) {
this.requestBuilder = requestBuilder;
}
/**
* Get the client name
*
* @return the client name
*/
@Override
public String getName() {
return this.name;
}
/**
* Get the role used by the client
*
* @return the client's role
*/
String getRole() {
return this.role;
}
/** @return a boolean to indicate whether the client is closed or not */
@Override
public boolean isClosed() {
return isClosed;
}
/**
* Open a channel against a Snowflake table
*
* @param request the open channel request
* @return a SnowflakeStreamingIngestChannel object
*/
@Override
public SnowflakeStreamingIngestChannelInternal openChannel(OpenChannelRequest request) {
if (isClosed) {
throw new SFException(ErrorCode.CLOSED_CLIENT);
}
logger.logDebug(
"Open channel request start, channel={}, table={}, client={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
getName());
try {
Map payload = new HashMap<>();
payload.put(
"request_id", this.flushService.getClientPrefix() + "_" + counter.getAndIncrement());
payload.put("channel", request.getChannelName());
payload.put("table", request.getTableName());
payload.put("database", request.getDBName());
payload.put("schema", request.getSchemaName());
payload.put("write_mode", Constants.WriteMode.CLOUD_STORAGE.name());
payload.put("role", this.role);
if (request.isOffsetTokenProvided()) {
payload.put("offset_token", request.getOffsetToken());
}
OpenChannelResponse response =
executeWithRetries(
OpenChannelResponse.class,
OPEN_CHANNEL_ENDPOINT,
payload,
"open channel",
STREAMING_OPEN_CHANNEL,
httpClient,
requestBuilder);
// Check for Snowflake specific response code
if (response.getStatusCode() != RESPONSE_SUCCESS) {
logger.logDebug(
"Open channel request failed, channel={}, table={}, client={}, message={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
getName(),
response.getMessage());
throw new SFException(ErrorCode.OPEN_CHANNEL_FAILURE, response.getMessage());
}
logger.logInfo(
"Open channel request succeeded, channel={}, table={}, clientSequencer={},"
+ " rowSequencer={}, client={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
response.getClientSequencer(),
response.getRowSequencer(),
getName());
// Channel is now registered, add it to the in-memory channel pool
SnowflakeStreamingIngestChannelInternal channel =
SnowflakeStreamingIngestChannelFactory.builder(response.getChannelName())
.setDBName(response.getDBName())
.setSchemaName(response.getSchemaName())
.setTableName(response.getTableName())
.setOffsetToken(response.getOffsetToken())
.setRowSequencer(response.getRowSequencer())
.setChannelSequencer(response.getClientSequencer())
.setOwningClient(this)
.setEncryptionKey(response.getEncryptionKey())
.setEncryptionKeyId(response.getEncryptionKeyId())
.setOnErrorOption(request.getOnErrorOption())
.setDefaultTimezone(request.getDefaultTimezone())
.setOffsetTokenVerificationFunction(request.getOffsetTokenVerificationFunction())
.build();
// Setup the row buffer schema
channel.setupSchema(response.getTableColumns());
// Add channel to the channel cache
this.channelCache.addChannel(channel);
return channel;
} catch (IOException | IngestResponseException e) {
throw new SFException(e, ErrorCode.OPEN_CHANNEL_FAILURE, e.getMessage());
}
}
@Override
public void dropChannel(DropChannelRequest request) {
if (isClosed) {
throw new SFException(ErrorCode.CLOSED_CLIENT);
}
logger.logDebug(
"Drop channel request start, channel={}, table={}, client={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
getName());
try {
Map payload = new HashMap<>();
payload.put(
"request_id", this.flushService.getClientPrefix() + "_" + counter.getAndIncrement());
payload.put("channel", request.getChannelName());
payload.put("table", request.getTableName());
payload.put("database", request.getDBName());
payload.put("schema", request.getSchemaName());
payload.put("role", this.role);
Long clientSequencer = null;
if (request instanceof DropChannelVersionRequest) {
clientSequencer = ((DropChannelVersionRequest) request).getClientSequencer();
if (clientSequencer != null) {
payload.put("client_sequencer", clientSequencer);
}
}
DropChannelResponse response =
executeWithRetries(
DropChannelResponse.class,
DROP_CHANNEL_ENDPOINT,
payload,
"drop channel",
STREAMING_DROP_CHANNEL,
httpClient,
requestBuilder);
// Check for Snowflake specific response code
if (response.getStatusCode() != RESPONSE_SUCCESS) {
logger.logDebug(
"Drop channel request failed, channel={}, table={}, client={}, message={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
getName(),
response.getMessage());
throw new SFException(ErrorCode.DROP_CHANNEL_FAILURE, response.getMessage());
}
logger.logInfo(
"Drop channel request succeeded, channel={}, table={}, clientSequencer={} client={}",
request.getChannelName(),
request.getFullyQualifiedTableName(),
clientSequencer,
getName());
} catch (IOException | IngestResponseException e) {
throw new SFException(e, ErrorCode.DROP_CHANNEL_FAILURE, e.getMessage());
}
}
/**
* Return the latest committed/persisted offset token for all channels
*
* @return map of channel to the latest persisted offset token
*/
@Override
public Map getLatestCommittedOffsetTokens(
List channels) {
List> internalChannels =
channels.stream()
.map(c -> (SnowflakeStreamingIngestChannelInternal) c)
.collect(Collectors.toList());
List channelsStatus =
getChannelsStatus(internalChannels).getChannels();
Map result = new HashMap<>();
for (int idx = 0; idx < channels.size(); idx++) {
result.put(
channels.get(idx).getFullyQualifiedName(),
channelsStatus.get(idx).getPersistedOffsetToken());
}
return result;
}
/**
* Fetch channels status from Snowflake
*
* @param channels a list of channels that we want to get the status on
* @return a ChannelsStatusResponse object
*/
ChannelsStatusResponse getChannelsStatus(
List> channels) {
try {
ChannelsStatusRequest request = new ChannelsStatusRequest();
List requestDTOs =
channels.stream()
.map(ChannelsStatusRequest.ChannelStatusRequestDTO::new)
.collect(Collectors.toList());
request.setChannels(requestDTOs);
request.setRole(this.role);
String payload = objectMapper.writeValueAsString(request);
ChannelsStatusResponse response =
executeWithRetries(
ChannelsStatusResponse.class,
CHANNEL_STATUS_ENDPOINT,
payload,
"channel status",
STREAMING_CHANNEL_STATUS,
httpClient,
requestBuilder);
// Check for Snowflake specific response code
if (response.getStatusCode() != RESPONSE_SUCCESS) {
throw new SFException(ErrorCode.CHANNEL_STATUS_FAILURE, response.getMessage());
}
for (int idx = 0; idx < channels.size(); idx++) {
SnowflakeStreamingIngestChannelInternal channel = channels.get(idx);
ChannelsStatusResponse.ChannelStatusResponseDTO channelStatus =
response.getChannels().get(idx);
if (channelStatus.getStatusCode() != RESPONSE_SUCCESS) {
String errorMessage =
String.format(
"Channel has failure status_code, name=%s, channel_sequencer=%d, status_code=%d",
channel.getFullyQualifiedName(),
channel.getChannelSequencer(),
channelStatus.getStatusCode());
logger.logWarn(errorMessage);
if (getTelemetryService() != null) {
getTelemetryService()
.reportClientFailure(this.getClass().getSimpleName(), errorMessage);
}
}
}
return response;
} catch (IOException | IngestResponseException e) {
throw new SFException(e, ErrorCode.CHANNEL_STATUS_FAILURE, e.getMessage());
}
}
/**
* Register the uploaded blobs to a Snowflake table
*
* @param blobs list of uploaded blobs
*/
void registerBlobs(List blobs) {
for (List blobBatch : partitionBlobListForRegistrationRequest(blobs)) {
this.registerBlobs(blobBatch, 0);
}
}
/**
* Partition the collection of blobs into sub-lists, so that the total number of chunks in each
* sublist does not exceed the max allowed number of chunks in one registration request.
*/
List> partitionBlobListForRegistrationRequest(List blobs) {
List> result = new ArrayList<>();
List currentBatch = new ArrayList<>();
int chunksInCurrentBatch = 0;
int maxChunksInBlobAndRegistrationRequest =
parameterProvider.getMaxChunksInBlobAndRegistrationRequest();
for (BlobMetadata blob : blobs) {
if (blob.getChunks().size() > maxChunksInBlobAndRegistrationRequest) {
throw new SFException(
ErrorCode.INTERNAL_ERROR,
String.format(
"Incorrectly generated blob detected - number of chunks in the blob is larger than"
+ " the max allowed number of chunks. Please report this bug to Snowflake."
+ " bdec=%s chunkCount=%d maxAllowedChunkCount=%d",
blob.getPath(), blob.getChunks().size(), maxChunksInBlobAndRegistrationRequest));
}
if (chunksInCurrentBatch + blob.getChunks().size() > maxChunksInBlobAndRegistrationRequest) {
// Newly added BDEC file would exceed the max number of chunks in a single registration
// request. We put chunks collected so far into the result list and create a new batch with
// the current blob
result.add(currentBatch);
currentBatch = new ArrayList<>();
currentBatch.add(blob);
chunksInCurrentBatch = blob.getChunks().size();
} else {
// Newly added BDEC can be added to the current batch because it does not exceed the max
// number of chunks in a single registration request, yet.
currentBatch.add(blob);
chunksInCurrentBatch += blob.getChunks().size();
}
}
if (!currentBatch.isEmpty()) {
result.add(currentBatch);
}
return result;
}
/**
* Register the uploaded blobs to a Snowflake table
*
* @param blobs list of uploaded blobs
* @param executionCount Number of times this call has been attempted, used to track retries
*/
void registerBlobs(List blobs, final int executionCount) {
logger.logInfo(
"Register blob request preparing for blob={}, client={}, executionCount={}",
blobs.stream().map(BlobMetadata::getPath).collect(Collectors.toList()),
this.name,
executionCount);
RegisterBlobResponse response = null;
try {
Map payload = new HashMap<>();
payload.put(
"request_id", this.flushService.getClientPrefix() + "_" + counter.getAndIncrement());
payload.put("blobs", blobs);
payload.put("role", this.role);
response =
executeWithRetries(
RegisterBlobResponse.class,
REGISTER_BLOB_ENDPOINT,
payload,
"register blob",
STREAMING_REGISTER_BLOB,
httpClient,
requestBuilder);
// Check for Snowflake specific response code
if (response.getStatusCode() != RESPONSE_SUCCESS) {
logger.logDebug(
"Register blob request failed for blob={}, client={}, message={}, executionCount={}",
blobs.stream().map(BlobMetadata::getPath).collect(Collectors.toList()),
this.name,
response.getMessage(),
executionCount);
throw new SFException(ErrorCode.REGISTER_BLOB_FAILURE, response.getMessage());
}
} catch (IOException | IngestResponseException e) {
throw new SFException(e, ErrorCode.REGISTER_BLOB_FAILURE, e.getMessage());
}
logger.logInfo(
"Register blob request returned for blob={}, client={}, executionCount={}",
blobs.stream().map(BlobMetadata::getPath).collect(Collectors.toList()),
this.name,
executionCount);
// We will retry any blob chunks that were rejected because internal Snowflake queues are full
Set queueFullChunks = new HashSet<>();
response
.getBlobsStatus()
.forEach(
blobStatus ->
blobStatus
.getChunksStatus()
.forEach(
chunkStatus ->
chunkStatus
.getChannelsStatus()
.forEach(
channelStatus -> {
if (channelStatus.getStatusCode() != RESPONSE_SUCCESS) {
// If the chunk queue is full, we wait and retry the chunks
if ((channelStatus.getStatusCode()
== RESPONSE_ERR_ENQUEUE_TABLE_CHUNK_QUEUE_FULL
|| channelStatus.getStatusCode()
== RESPONSE_ERR_GENERAL_EXCEPTION_RETRY_REQUEST)
&& executionCount
< MAX_STREAMING_INGEST_API_CHANNEL_RETRY) {
queueFullChunks.add(chunkStatus);
} else {
String errorMessage =
String.format(
"Channel has been invalidated because of failure"
+ " response, name=%s, channel_sequencer=%d,"
+ " status_code=%d, message=%s,"
+ " executionCount=%d",
channelStatus.getChannelName(),
channelStatus.getChannelSequencer(),
channelStatus.getStatusCode(),
channelStatus.getMessage(),
executionCount);
logger.logWarn(errorMessage);
if (getTelemetryService() != null) {
getTelemetryService()
.reportClientFailure(
this.getClass().getSimpleName(), errorMessage);
}
channelCache.invalidateChannelIfSequencersMatch(
chunkStatus.getDBName(),
chunkStatus.getSchemaName(),
chunkStatus.getTableName(),
channelStatus.getChannelName(),
channelStatus.getChannelSequencer(),
errorMessage);
}
}
})));
if (!queueFullChunks.isEmpty()) {
logger.logInfo(
"Retrying registerBlobs request, blobs={}, retried_chunks={}, executionCount={}",
blobs,
queueFullChunks,
executionCount);
List retryBlobs = this.getRetryBlobs(queueFullChunks, blobs);
if (retryBlobs.isEmpty()) {
throw new SFException(ErrorCode.INTERNAL_ERROR, "Failed to retry queue full chunks");
}
sleepForRetry(executionCount);
this.registerBlobs(retryBlobs, executionCount + 1);
}
}
/**
* Constructs a new register blobs payload consisting of chunks that were rejected by a prior
* registration attempt
*
* @param queueFullChunks ChunkRegisterStatus values for the chunks that had been rejected
* @param blobs List from the prior registration call
* @return a new List for only chunks matching queueFullChunks
*/
List getRetryBlobs(
Set queueFullChunks, List blobs) {
/*
If a channel returns a RESPONSE_ERR_ENQUEUE_TABLE_CHUNK_QUEUE_FULL statusCode then all channels in the same chunk
will have that statusCode. Here we collect all channels with RESPONSE_ERR_ENQUEUE_TABLE_CHUNK_QUEUE_FULL and use
them to pull out the chunks to retry from blobs
*/
Set> queueFullKeys =
queueFullChunks.stream()
.flatMap(
chunkRegisterStatus -> {
return chunkRegisterStatus.getChannelsStatus().stream()
.map(
channelStatus ->
new Pair(
channelStatus.getChannelName(),
channelStatus.getChannelSequencer()));
})
.collect(Collectors.toSet());
List retryBlobs = new ArrayList<>();
blobs.forEach(
blobMetadata -> {
List relevantChunks =
blobMetadata.getChunks().stream()
.filter(
chunkMetadata ->
chunkMetadata.getChannels().stream()
.map(
channelMetadata ->
new Pair<>(
channelMetadata.getChannelName(),
channelMetadata.getClientSequencer()))
.anyMatch(queueFullKeys::contains))
.collect(Collectors.toList());
if (!relevantChunks.isEmpty()) {
retryBlobs.add(
BlobMetadata.createBlobMetadata(
blobMetadata.getPath(),
blobMetadata.getMD5(),
blobMetadata.getVersion(),
relevantChunks,
blobMetadata.getBlobStats(),
// Important to not change the spansMixedTables value in case of retries. The
// correct value is the value that the already uploaded blob has.
blobMetadata.getSpansMixedTables()));
}
});
return retryBlobs;
}
/** Close the client, which will flush first and then release all the resources */
@Override
public void close() throws Exception {
if (isClosed) {
return;
}
isClosed = true;
this.channelCache.closeAllChannels();
// Flush any remaining rows and cleanup all the resources
try {
this.flush(true).get();
// Report telemetry if needed
reportStreamingIngestTelemetryToSF();
// Unregister jmx metrics
if (this.metrics != null) {
Slf4jReporter.forRegistry(metrics).outputTo(logger.getLogger()).build().report();
removeMetricsFromRegistry();
}
// LOG jvm memory and thread metrics at the end
if (this.jvmMemoryAndThreadMetrics != null) {
Slf4jReporter.forRegistry(jvmMemoryAndThreadMetrics)
.outputTo(logger.getLogger())
.build()
.report();
}
} catch (InterruptedException | ExecutionException e) {
throw new SFException(e, ErrorCode.RESOURCE_CLEANUP_FAILURE, "client close");
} finally {
this.flushService.shutdown();
cleanUpResources();
}
}
/**
* Flush all data in memory to persistent storage and register with a Snowflake table
*
* @param closing whether the flush is called as part of client closing
* @return future which will be complete when the flush the data is registered
*/
CompletableFuture flush(boolean closing) {
if (isClosed && !closing) {
throw new SFException(ErrorCode.CLOSED_CLIENT);
}
return this.flushService.flush(true);
}
/** Set the flag to indicate that a flush is needed */
void setNeedFlush() {
this.flushService.setNeedFlush();
}
/** Remove the channel in the channel cache if the channel sequencer matches */
void removeChannelIfSequencersMatch(SnowflakeStreamingIngestChannelInternal channel) {
this.channelCache.removeChannelIfSequencersMatch(channel);
}
/** Get whether we're running under test mode */
boolean isTestMode() {
return this.isTestMode;
}
/** Get the http client */
CloseableHttpClient getHttpClient() {
return this.httpClient;
}
/** Get the request builder */
RequestBuilder getRequestBuilder() {
return this.requestBuilder;
}
/** Get the channel cache */
ChannelCache getChannelCache() {
return this.channelCache;
}
/** Get the flush service */
FlushService getFlushService() {
return this.flushService;
}
/**
* Check if any channels has uncommitted rows
*
* @param channels a list of channels we want to check against
* @return a list of channels that has uncommitted rows
*/
List> verifyChannelsAreFullyCommitted(
List> channels) {
if (channels.isEmpty()) {
return channels;
}
// Start checking the status of all the channels in the list
int retry = 0;
boolean isTimeout = true;
List oldChannelsStatus = new ArrayList<>();
List> channelsWithError = new ArrayList<>();
do {
List channelsStatus =
getChannelsStatus(channels).getChannels();
List> tempChannels = new ArrayList<>();
List tempChannelsStatus = new ArrayList<>();
for (int idx = 0; idx < channelsStatus.size(); idx++) {
ChannelsStatusResponse.ChannelStatusResponseDTO channelStatus = channelsStatus.get(idx);
SnowflakeStreamingIngestChannelInternal channel = channels.get(idx);
long rowSequencer = channel.getChannelState().getRowSequencer();
logger.logInfo(
"Get channel status name={}, status={}, clientSequencer={}, rowSequencer={},"
+ " startOffsetToken={}, endOffsetToken={}, persistedRowSequencer={},"
+ " persistedOffsetToken={}",
channel.getName(),
channelStatus.getStatusCode(),
channel.getChannelSequencer(),
rowSequencer,
channel.getChannelState().getStartOffsetToken(),
channel.getChannelState().getEndOffsetToken(),
channelStatus.getPersistedRowSequencer(),
channelStatus.getPersistedOffsetToken());
if (channelStatus.getStatusCode() != RESPONSE_SUCCESS) {
channelsWithError.add(channel);
} else if (!channelStatus.getPersistedRowSequencer().equals(rowSequencer)) {
tempChannels.add(channel);
tempChannelsStatus.add(channelStatus);
}
}
// Check whether the server side commit is making progress
boolean isMakingProgress = tempChannels.size() != channels.size();
if (!isMakingProgress) {
for (int idx = 0; idx < channelsStatus.size(); idx++) {
if (oldChannelsStatus.isEmpty()
|| !channelsStatus
.get(idx)
.getPersistedRowSequencer()
.equals(oldChannelsStatus.get(idx).getPersistedRowSequencer())) {
isMakingProgress = true;
break;
}
}
}
// Break if all the channels are fully committed, otherwise retry and check again
oldChannelsStatus = tempChannelsStatus;
channels = tempChannels;
if (channels.isEmpty()) {
isTimeout = false;
break;
}
// If we know the commit is making progress, don't increase the retry count
if (!isMakingProgress) {
retry++;
}
try {
Thread.sleep(COMMIT_RETRY_INTERVAL_IN_MS);
} catch (InterruptedException e) {
throw new SFException(ErrorCode.INTERNAL_ERROR, e.getMessage());
}
} while (retry < COMMIT_MAX_RETRY_COUNT);
if (isTimeout) {
logger.logWarn(
"Commit service at server side is not making progress, stop retrying for client={}.",
this.name);
}
channels.addAll(channelsWithError);
return channels;
}
/**
* Get ParameterProvider with configurable parameters
*
* @return ParameterProvider used by the client
*/
ParameterProvider getParameterProvider() {
return parameterProvider;
}
/**
* Set refresh token, this method is for refresh token renewal without requiring to restart
* client. This method only works when the authorization type is OAuth
*
* @param refreshToken the new refresh token
*/
@Override
public void setRefreshToken(String refreshToken) {
if (requestBuilder != null) {
requestBuilder.setRefreshToken(refreshToken);
}
}
/**
* Registers the performance metrics along with JVM memory and Threads.
*
* Latency and throughput metrics are emitted to JMX, jvm memory and thread metrics are logged
* to Slf4JLogger
*/
private void setupMetricsForClient() {
// Start the telemetry background worker if needed
if (ENABLE_TELEMETRY_TO_SF) {
this.telemetryWorker = Executors.newSingleThreadScheduledExecutor();
this.telemetryWorker.scheduleWithFixedDelay(
this::reportStreamingIngestTelemetryToSF,
STREAMING_INGEST_TELEMETRY_UPLOAD_INTERVAL_IN_SEC,
STREAMING_INGEST_TELEMETRY_UPLOAD_INTERVAL_IN_SEC,
TimeUnit.SECONDS);
}
// Register metrics if needed
metrics = new MetricRegistry();
if (ENABLE_TELEMETRY_TO_SF || this.parameterProvider.hasEnabledSnowpipeStreamingMetrics()) {
// CPU usage metric
cpuHistogram = metrics.histogram(MetricRegistry.name("cpu", "usage", "histogram"));
// Latency metrics
flushLatency = metrics.timer(MetricRegistry.name("latency", "flush"));
buildLatency = metrics.timer(MetricRegistry.name("latency", "build"));
uploadLatency = metrics.timer(MetricRegistry.name("latency", "upload"));
registerLatency = metrics.timer(MetricRegistry.name("latency", "register"));
// Throughput metrics
uploadThroughput = metrics.meter(MetricRegistry.name("throughput", "upload"));
inputThroughput = metrics.meter(MetricRegistry.name("throughput", "input"));
// Blob histogram metrics
blobSizeHistogram = metrics.histogram(MetricRegistry.name("blob", "size", "histogram"));
blobRowCountHistogram =
metrics.histogram(MetricRegistry.name("blob", "row", "count", "histogram"));
}
if (this.parameterProvider.hasEnabledSnowpipeStreamingMetrics()) {
JmxReporter jmxReporter =
JmxReporter.forRegistry(this.metrics)
.inDomain(SNOWPIPE_STREAMING_JMX_METRIC_PREFIX)
.convertDurationsTo(TimeUnit.SECONDS)
.createsObjectNamesWith(
(ignoreMeterType, jmxDomain, metricName) ->
getObjectName(this.getName(), jmxDomain, metricName))
.build();
jmxReporter.start();
// Add JVM and thread metrics too
jvmMemoryAndThreadMetrics = new MetricRegistry();
jvmMemoryAndThreadMetrics.register(
MetricRegistry.name("jvm", "memory"), new MemoryUsageGaugeSet());
jvmMemoryAndThreadMetrics.register(
MetricRegistry.name("jvm", "threads"), new ThreadStatesGaugeSet());
SharedMetricRegistries.add(
SNOWPIPE_STREAMING_JVM_MEMORY_AND_THREAD_METRICS_REGISTRY, jvmMemoryAndThreadMetrics);
}
if (metrics.getMetrics().size() != 0) {
SharedMetricRegistries.add(SNOWPIPE_STREAMING_SHARED_METRICS_REGISTRY, metrics);
}
}
/**
* This method is called to fetch an object name for all registered metrics. It can be called
* during registration or unregistration. (Internal implementation of codehale)
*
* @param clientName name of the client. Passed in builder
* @param jmxDomain JMX Domain
* @param metricName metric name used while registering the metric.
* @return Object Name constructed from above three args
*/
private static ObjectName getObjectName(String clientName, String jmxDomain, String metricName) {
try {
String sb = jmxDomain + ":clientName=" + clientName + ",name=" + metricName;
return new ObjectName(sb);
} catch (MalformedObjectNameException e) {
logger.logWarn("Could not create Object name for MetricName={}", metricName);
throw new SFException(ErrorCode.INTERNAL_ERROR, "Invalid metric name");
}
}
/** Unregister all streaming related metrics from registry */
private void removeMetricsFromRegistry() {
if (metrics.getMetrics().size() != 0) {
logger.logDebug("Unregistering all metrics for client={}", this.getName());
metrics.removeMatching(MetricFilter.startsWith(SNOWPIPE_STREAMING_JMX_METRIC_PREFIX));
SharedMetricRegistries.remove(SNOWPIPE_STREAMING_SHARED_METRICS_REGISTRY);
}
}
/**
* Get the Telemetry Service for a given client
*
* @return TelemetryService used by the client
*/
TelemetryService getTelemetryService() {
return this.requestBuilder == null ? null : requestBuilder.getTelemetryService();
}
/** Report streaming ingest related telemetries to Snowflake */
private void reportStreamingIngestTelemetryToSF() {
TelemetryService telemetryService = getTelemetryService();
if (telemetryService != null) {
telemetryService.reportLatencyInSec(
this.buildLatency, this.uploadLatency, this.registerLatency, this.flushLatency);
telemetryService.reportThroughputBytesPerSecond(this.inputThroughput, this.uploadThroughput);
telemetryService.reportCpuMemoryUsage(this.cpuHistogram);
}
}
/** Cleanup any resource during client closing or failures */
private void cleanUpResources() {
if (this.telemetryWorker != null) {
this.telemetryWorker.shutdown();
}
if (this.requestBuilder != null) {
this.requestBuilder.closeResources();
}
if (!this.isTestMode) {
HttpUtil.shutdownHttpConnectionManagerDaemonThread();
}
}
}
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