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net.snowflake.client.jdbc.SnowflakeDriver Maven / Gradle / Ivy
/*
* Copyright (c) 2012-2017 Snowflake Computing Inc. All rights reserved.
*/
package net.snowflake.client.jdbc;
import net.snowflake.common.core.ResourceBundleManager;
import net.snowflake.client.core.EventHandler;
import net.snowflake.client.core.EventUtil;
import net.snowflake.common.core.SqlState;
import java.io.File;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.DriverPropertyInfo;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.util.Properties;
import java.util.jar.Attributes;
import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
import java.util.logging.Handler;
import java.util.logging.ConsoleHandler;
import java.util.logging.FileHandler;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.logging.SimpleFormatter;
import java.util.regex.Pattern;
import net.snowflake.client.log.*;
/**
* JDBC Driver implementation of Snowflake for production.
* To use this driver, specify the following URL:
* jdbc:snowflake://host:port
*
* @author jhuang
*/
public class SnowflakeDriver implements Driver
{
public static Handler fileHandler = null;
static final
SFLogger logger = SFLoggerFactory.getLogger(SnowflakeDriver.class);
private static final String JDBC_PROTOCOL = "jdbc:snowflake://";
// pattern for jdbc:snowflake://[host[:port]]/?q1=v1&q2=v2...
private static final String JDBC_PROTOCOL_REGEX =
"jdbc:snowflake://([a-zA-Z_\\-0-9\\.]+(:\\d+)?)?"
+ "(/?(\\?\\w+=\\w+)?(\\&\\w+=\\w+)*)?";
public static SnowflakeDriver INSTANCE = null;
private static final
DriverPropertyInfo[] EMPTY_INFO = new DriverPropertyInfo[0];
public static String implementVersion = null;
public static int majorVersion = 0;
public static int minorVersion = 0;
public static long changeVersion = 0;
protected static boolean disableIncidents = false;
private static final ResourceBundleManager versionResourceBundleManager
= ResourceBundleManager.getSingleton("net.snowflake.client.jdbc.version");
static
{
try
{
DriverManager.registerDriver(INSTANCE = new SnowflakeDriver());
}
catch (SQLException ex)
{
throw new IllegalStateException("Unable to register "
+ SnowflakeDriver.class.getName(), ex);
}
try
{
String loggerImpl = System.getProperty("net.snowflake.jdbc.loggerImpl");
EventUtil.initEventHandlerInstance(1000, 10000);
EventHandler eventHandler = EventUtil.getEventHandlerInstance();
// if this system property is not set and logger is staill jdk logger, then we are
// assuming the customer is using the old logging config
if (loggerImpl == null && (logger instanceof JDK14Logger))
{
String defaultLogSizeVal = System.getProperty("snowflake.jdbc.log.size");
String defaultLogCountVal = System.getProperty("snowflake.jdbc.log.count");
// default log size to 1 GB
int logSize = 1000000000;
// default number of log files to rotate to 2
int logCount = 2;
if (defaultLogSizeVal != null) {
try {
logSize = Integer.parseInt(defaultLogSizeVal);
} catch (Exception ex) {
;
}
}
if (defaultLogCountVal != null) {
try {
logCount = Integer.parseInt(defaultLogCountVal);
} catch (Exception ex) {
;
}
}
fileHandler = new FileHandler("%t/snowflake_jdbc%u.log",
logSize, logCount, true);
String defaultLevelVal = System.getProperty("snowflake.jdbc.log.level");
Level defaultLevel = Level.WARNING;
if (defaultLevelVal != null) {
defaultLevel = Level.parse(defaultLevelVal.toUpperCase());
if (defaultLevel == null)
defaultLevel = Level.WARNING;
}
fileHandler.setLevel(Level.ALL);
fileHandler.setFormatter(new SFFormatter());
eventHandler.setLevel(Level.ALL);
eventHandler.setFormatter(new SimpleFormatter());
// set default level and add handler for snowflake logger
Logger snowflakeLogger = Logger.getLogger(SFFormatter.CLASS_NAME_PREFIX);
snowflakeLogger.setLevel(defaultLevel);
snowflakeLogger.addHandler(SnowflakeDriver.fileHandler);
snowflakeLogger.addHandler(eventHandler);
Logger snowflakeLoggerInformaticaV1 = Logger.getLogger(
SFFormatter.INFORMATICA_V1_CLASS_NAME_PREFIX);
snowflakeLoggerInformaticaV1.setLevel(defaultLevel);
snowflakeLoggerInformaticaV1.addHandler(SnowflakeDriver.fileHandler);
snowflakeLoggerInformaticaV1.addHandler(eventHandler);
}
else if (loggerImpl != null && (logger instanceof JDK14Logger))
{
JDK14Logger.addHandler(eventHandler);
if (!hasLoggingConfig())
{
// if no logging.properties has been set
// then by default just use this default setting
JDK14Logger.disableDefaultHandler();
Handler console = new ConsoleHandler();
console.setFormatter(new SFFormatter());
console.setLevel(Level.WARNING);
JDK14Logger.addHandler(console);
}
}
logger.debug("registered driver");
}
catch (Exception ex)
{
System.err.println("Unable to set up logging");
ex.printStackTrace();
}
/*
* Get the manifest properties here.
*/
initializeClientVersionFromManifest();
}
static private void initializeClientVersionFromManifest()
{
/*
* Get JDBC version numbers from version.properties in snowflake-jdbc
*/
try
{
implementVersion = versionResourceBundleManager.getLocalizedMessage("version");
logger.debug("implement version: {}", implementVersion);
// parse implementation version major.minor.change
if (implementVersion != null)
{
String[] versionBreakdown = implementVersion.split("\\.");
if (versionBreakdown != null && versionBreakdown.length == 3)
{
majorVersion = Integer.parseInt(versionBreakdown[0]);
minorVersion = Integer.parseInt(versionBreakdown[1]);
changeVersion = Long.parseLong(versionBreakdown[2]);
}
else
throw new SnowflakeSQLException(SqlState.INTERNAL_ERROR,
ErrorCode.INTERNAL_ERROR.getMessageCode(),
"Invalid implementation version: " + implementVersion);
}
else
throw new SnowflakeSQLException(SqlState.INTERNAL_ERROR,
ErrorCode.INTERNAL_ERROR.getMessageCode(),
"Null implementation version");
logger.debug("implementation_version = {}", implementVersion);
logger.debug("major version = {}", majorVersion);
logger.debug("minor version = {}", minorVersion);
logger.debug("change version = {}", changeVersion);
}
catch (Exception ex)
{
logger.error("Exception encountered when retrieving client "
+ "version attributes: {}", ex.getMessage());
}
/*
* Get the svn revision here.
*/
try
{
if (SnowflakeConnectionV1.class.getProtectionDomain() == null ||
SnowflakeConnectionV1.class.getProtectionDomain().getCodeSource()
== null ||
SnowflakeConnectionV1.class.getProtectionDomain().getCodeSource().
getLocation() == null)
{
logger.debug("Couldn't get code source location");
return;
}
URI jarURI =
SnowflakeConnectionV1.class.getProtectionDomain().getCodeSource().
getLocation().toURI();
logger.debug("jar uri: {}, to_url: {}", jarURI.getPath(),
jarURI.toURL());
// if code source is not from a jar, there will be no manifest, so skip
// the svn revision setup
if (jarURI == null || jarURI.getPath() == null ||
!jarURI.getPath().endsWith(".jar"))
{
logger.debug("couldn't determine code source");
return;
}
URL jarURL = jarURI.toURL();
if (jarURL == null)
{
logger.debug("null jar URL");
return;
}
InputStream is = jarURL.openStream();
if (is == null)
{
logger.debug("Can not open snowflake-jdbc.jar: " +
jarURI.getPath());
return;
}
JarInputStream jarStream = new JarInputStream(is);
Manifest mf = jarStream.getManifest();
if (mf == null)
{
logger.debug("Manifest not found from snowflake-jdbc.jar");
return;
}
Attributes mainAttribs = mf.getMainAttributes();
if (mainAttribs == null)
{
logger.debug(
"mainAttribs null from the manifest in snowflake-jdbc.jar");
return;
}
}
catch (Throwable ex)
{
logger.debug("Exception encountered when retrieving client "
+ "svn revision attribute from manifest: "
+ ex.getMessage());
}
}
/**
* Checks whether a given url is in a valid format.
*
* The current uri format is: jdbc:snowflake://[host[:port]]
*
* jdbc:snowflake:// - run in embedded mode jdbc:snowflake://localhost -
* connect to localhost default port (8080)
*
* jdbc:snowflake://localhost:8080- connect to localhost port 8080
*
* @param url
* url of the database including host and port
* @return
* true if the url is valid
* @throws SQLException if failed to accept url
*/
@Override
public boolean acceptsURL(String url) throws SQLException
{
if (url == null)
return false;
return url.indexOf("/?") > 0?
Pattern.matches(JDBC_PROTOCOL_REGEX,
url.substring(0, url.indexOf("/?"))):
Pattern.matches(JDBC_PROTOCOL_REGEX, url);
}
/**
* Connect method
*
* @param url
* jdbc url
* @param info
* addition info for passing database/schema names
* @return
* connection
* @throws SQLException if failed to create a snowflake connection
*/
@Override
public Connection connect(String url, Properties info) throws SQLException
{
if (acceptsURL(url))
{
return new SnowflakeConnectionV1(url, info);
}
else
return null;
}
@Override
public int getMajorVersion()
{
return majorVersion;
}
@Override
public int getMinorVersion()
{
return minorVersion;
}
@Override
public DriverPropertyInfo[] getPropertyInfo(String url, Properties info)
throws SQLException
{
return EMPTY_INFO;
}
@Override
public boolean jdbcCompliant()
{
return false;
}
@Override
public java.util.logging.Logger getParentLogger() throws SQLFeatureNotSupportedException
{
return null;
}
public static boolean isDisableIncidents()
{
return disableIncidents;
}
public static void setDisableIncidents(
boolean throttleIncidents)
{
if (throttleIncidents)
logger.trace("setting throttle incidents");
SnowflakeDriver.disableIncidents =
throttleIncidents;
}
/**
* If using java.util.logging, this method is used to check whether a logging.properties
* exists or not.
*
* It will first check where $JRE/lib/logging.properties exist or not,
* Then check if two system property
* - java.util.logging.config.class
* - java.util.logging.config.file
* has been set or not.
*
* If yes, return true. If none of the above is set, return false
*/
private static boolean hasLoggingConfig()
{
String JRE = System.getProperty("java.home");
String filePath = JRE + "/lib/logging.properties";
File file = new File(filePath);
if (file.exists())
{
return true;
}
else
{
String configClass = System.getProperty("java.util.logging.config.class");
String configFile = System.getProperty("java.util.logging.config.file");
return (configClass != null) || (configFile != null);
}
}
}
