Mercurial > hg > monetdb-java

annotate src/main/java/org/monetdb/mcl/net/ClientInfo.java @ 905:a52bc2dcdb8c

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Implement ClientInfo API And move ClientInfo out out MapiSocket
author Joeri van Ruth <joeri.van.ruth@monetdbsolutions.com>
date Mon, 17 Jun 2024 15:54:45 +0200 (10 months ago)
parents 2d880f90be2a
children cc6425e98017
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package org.monetdb.mcl.net;
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2
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3 import org.monetdb.jdbc.MonetDriver;
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4
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5 import java.io.File;
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6 import java.lang.management.ManagementFactory;
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7 import java.lang.management.RuntimeMXBean;
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8 import java.net.InetAddress;
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9 import java.net.UnknownHostException;
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10 import java.sql.ClientInfoStatus;
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11 import java.sql.SQLClientInfoException;
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12 import java.sql.SQLException;
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13 import java.sql.SQLWarning;
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14 import java.util.HashMap;
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15 import java.util.Map;
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16 import java.util.Properties;
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17 import java.util.Set;
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18
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19 /**
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20 * Manage ClientInfo properties to track, and help generating a
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21 * @{link SQLClientInfoException} if there is a failure
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22 */
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23 public class ClientInfo {
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24 private static final String defaultHostname = findHostname();
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25
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26 private static final String defaultClientLibrary = findClientLibrary();
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27
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28 private static final String defaultApplicationName = findApplicationName();
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29
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30 private static final String defaultPid = findPid();
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31
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32 private final Properties props;
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33 private HashMap<String, ClientInfoStatus> problems = null;
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34
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35 public ClientInfo() {
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36 props = new Properties();
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37 }
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38
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39 public void setDefaults() {
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40 props.setProperty("ClientHostname", defaultHostname);
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41 props.setProperty("ClientLibrary", defaultClientLibrary);
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42 props.setProperty("ClientPid", defaultPid);
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43 props.setProperty("ApplicationName", defaultApplicationName);
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44 props.setProperty("ClientRemark", "");
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45 }
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46
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47 private static String findHostname() {
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48 try {
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49 return InetAddress.getLocalHost().getHostName();
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50 } catch (UnknownHostException e) {
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51 return "";
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52 }
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53 }
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54
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55 private static String findApplicationName() {
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56 String appName = "";
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57 try {
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58 String prop = System.getProperty("sun.java.command");
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59 if (prop != null) {
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60 // we want only the command, and not the arguments
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61 prop = prop.split("\\s", 2)[0];
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62 // keep only the basename5
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63 int idx = prop.lastIndexOf(File.separatorChar);
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64 if (idx >= 0)
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65 prop = prop.substring(idx + 1);
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66 appName = prop;
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67 }
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68 } catch (SecurityException e) {
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69 // ignore
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70 }
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71
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72 return appName;
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73 }
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74
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75 private static String findPid() {
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76 try {
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77 RuntimeMXBean mxbean = ManagementFactory.getRuntimeMXBean();
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78 String pidAtHostname = mxbean.getName();
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79 return pidAtHostname.split("@", 2)[0];
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80 } catch (RuntimeException e) {
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81 return "";
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82 }
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83 }
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84
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85 private static String findClientLibrary() {
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86 return "monetdb-java " + MonetDriver.getDriverVersion();
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87 }
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88
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89 public String format() {
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90 StringBuilder builder = new StringBuilder(200);
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91 for (String name : props.stringPropertyNames()) {
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92 String value = props.getProperty(name);
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93 builder.append(name);
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94 builder.append('=');
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95 builder.append(value);
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96 builder.append('\n');
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97 }
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98 return builder.toString();
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99 }
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100
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101 public Properties get() {
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102 return props;
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103 }
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104
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105 public HashMap<String,ClientInfoStatus> getProblems() {
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106 return problems;
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107 }
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108
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109 public void set(String name, String value, Set<String> known) throws SQLClientInfoException {
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110 if (value == null)
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111 value = "";
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112
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113 if (known != null && !known.contains(name)) {
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114 addProblem(name, ClientInfoStatus.REASON_UNKNOWN_PROPERTY);
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115 } else if (value.contains("\n")) {
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116 addProblem(name, ClientInfoStatus.REASON_VALUE_INVALID);
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117 throw new SQLClientInfoException("Invalid value for Client Info property '" + name + "'", "01M07", problems);
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118 } else {
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119 props.setProperty(name, value);
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120 }
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121 }
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122
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123 public void set(String name, String value) throws SQLClientInfoException {
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124 set(name, value, null);
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125 }
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126
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127 private void addProblem(String name, ClientInfoStatus status) {
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128 if (problems == null)
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129 problems = new HashMap<>();
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130 ClientInfoStatus old = problems.get(name);
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131 if (old == null || status.compareTo(old) > 0)
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132 problems.put(name, status);
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133 }
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134
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135 public SQLClientInfoException wrapException(SQLException e) {
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136 return new SQLClientInfoException(problems, e);
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137 }
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138
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139 public SQLWarning warnings() {
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140 SQLWarning ret = null;
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141 if (problems == null)
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142 return null;
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143 for (Map.Entry<String, ClientInfoStatus> entry: problems.entrySet()) {
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144 if (!entry.getValue().equals(ClientInfoStatus.REASON_UNKNOWN_PROPERTY))
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145 continue;
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146 SQLWarning warning = new SQLWarning("unknown client info property: " + entry.getKey(), "01M07");
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147 if (ret == null)
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148 ret = warning;
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149 else
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150 ret.setNextWarning(warning);
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151 }
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152 return ret;
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153 }
903
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154 }