+
−/*
+
− * SPDX-License-Identifier: MPL-2.0
+
− *
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− * This Source Code Form is subject to the terms of the Mozilla Public
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− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 2024 MonetDB Foundation;
+
− * Copyright August 2008 - 2023 MonetDB B.V.;
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− * Copyright 1997 - July 2008 CWI.
+
− */
+
−
+
−package org.monetdb.mcl.net;
+
−
+
−import org.monetdb.jdbc.MonetDriver;
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−
+
−import java.io.File;
+
−import java.lang.management.ManagementFactory;
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−import java.lang.management.RuntimeMXBean;
+
−import java.net.InetAddress;
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−import java.net.UnknownHostException;
+
−import java.sql.ClientInfoStatus;
+
−import java.sql.SQLClientInfoException;
+
−import java.sql.SQLException;
+
−import java.sql.SQLWarning;
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−import java.util.HashMap;
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−import java.util.Map;
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−import java.util.Properties;
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−import java.util.Set;
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−
+
−/**
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− * Manage ClientInfo properties to track, and help generating a
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− * @{link SQLClientInfoException} if there is a failure
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− */
+
−public final class ClientInfo {
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−	public static final String defaultHostname = findHostname();
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−
+
−	public static final String defaultClientLibrary = findClientLibrary();
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−
+
−	public static final String defaultApplicationName = findApplicationName();
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−
+
−	public static final String defaultPid = findPid();
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−
+
−	private final Properties props;
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−	private HashMap<String, ClientInfoStatus> problems = null;
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−
+
−	public ClientInfo() {
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−		props = new Properties();
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−	}
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−
+
−	public void setDefaults() {
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−		props.setProperty("ClientHostname", defaultHostname);
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−		props.setProperty("ClientLibrary", defaultClientLibrary);
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−		props.setProperty("ClientPid", defaultPid);
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−		props.setProperty("ApplicationName", defaultApplicationName);
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−		props.setProperty("ClientRemark", "");
+
−	}
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−
+
−	private static String findHostname() {
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−		try {
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−			return InetAddress.getLocalHost().getHostName();
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−		} catch (UnknownHostException e) {
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−			return "";
+
−		}
+
−	}
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−
+
−	private static String findApplicationName() {
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−		String appName = "";
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−		try {
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−			String prop = System.getProperty("sun.java.command");
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−			if (prop != null) {
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−				// we want only the command, and not the arguments
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−				prop = prop.split("\\s", 2)[0];
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−				// keep only the basename5
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−				int idx = prop.lastIndexOf(File.separatorChar);
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−				if (idx >= 0)
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−					prop = prop.substring(idx + 1);
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−				appName = prop;
+
−			}
+
−		} catch (SecurityException e) {
+
−			// ignore
+
−		}
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−
+
−		return appName;
+
−	}
+
−
+
−	private static String findPid() {
+
−		try {
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−			RuntimeMXBean mxbean = ManagementFactory.getRuntimeMXBean();
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−			String pidAtHostname = mxbean.getName();
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−			return pidAtHostname.split("@", 2)[0];
+
−		} catch (RuntimeException e) {
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−			return "";
+
−		}
+
−	}
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−
+
−	private static String findClientLibrary() {
+
−		return "monetdb-java " + MonetDriver.getDriverVersion();
+
−	}
+
−
+
−	public String format() {
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−		StringBuilder builder = new StringBuilder(200);
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−		for (String name : props.stringPropertyNames()) {
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−			String value = props.getProperty(name);
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−			builder.append(name);
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−			builder.append('=');
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−			builder.append(value);
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−			builder.append('\n');
+
−		}
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−		return builder.toString();
+
−	}
+
−
+
−	public Properties get() {
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−		return props;
+
−	}
+
−
+
−	public HashMap<String,ClientInfoStatus> getProblems() {
+
−		return problems;
+
−	}
+
−
+
−	public void set(String name, String value, Set<String> known) throws SQLClientInfoException {
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−		if (value == null)
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−			value = "";
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−
+
−		if (known != null && !known.contains(name)) {
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−			addProblem(name, ClientInfoStatus.REASON_UNKNOWN_PROPERTY);
+
−		} else if (value.contains("\n")) {
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−			addProblem(name, ClientInfoStatus.REASON_VALUE_INVALID);
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−			throw new SQLClientInfoException("Invalid value for Client Info property '" + name + "'", "01M07", problems);
+
−		} else {
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−			props.setProperty(name, value);
+
−		}
+
−	}
+
−
+
−	public void set(String name, String value) throws SQLClientInfoException {
+
−		set(name, value, null);
+
−	}
+
−
+
−	private void addProblem(String name, ClientInfoStatus status) {
+
−		if (problems == null)
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−			problems = new HashMap<>();
+
−		ClientInfoStatus old = problems.get(name);
+
−		if (old == null || status.compareTo(old) > 0)
+
−			problems.put(name, status);
+
−	}
+
−
+
−	public SQLClientInfoException wrapException(SQLException e) {
+
−		return new SQLClientInfoException(problems, e);
+
−	}
+
−
+
−	public SQLWarning warnings() {
+
−		SQLWarning ret = null;
+
−		if (problems == null)
+
−			return null;
+
−		for (Map.Entry<String, ClientInfoStatus> entry: problems.entrySet()) {
+
−			if (!entry.getValue().equals(ClientInfoStatus.REASON_UNKNOWN_PROPERTY))
+
−				continue;
+
−			SQLWarning warning = new SQLWarning("unknown client info property: " + entry.getKey(), "01M07");
+
−			if (ret == null)
+
−				ret = warning;
+
−			else
+
−				ret.setNextWarning(warning);
+
−		}
+
−		return ret;
+
−	}
+
−}