| 1 | package org.dcache.boot; |
| 2 | |
| 3 | import java.util.Collection; |
| 4 | import java.util.Collections; |
| 5 | import java.util.List; |
| 6 | import java.util.Set; |
| 7 | import java.util.ArrayList; |
| 8 | import java.util.regex.Pattern; |
| 9 | import java.net.UnknownHostException; |
| 10 | import java.net.InetAddress; |
| 11 | import java.net.URI; |
| 12 | import java.net.URISyntaxException; |
| 13 | |
| 14 | import java.io.IOException; |
| 15 | import java.io.FileNotFoundException; |
| 16 | import java.io.File; |
| 17 | import java.io.PrintStream; |
| 18 | |
| 19 | import dmg.util.Args; |
| 20 | import dmg.util.CommandException; |
| 21 | |
| 22 | import org.dcache.util.ReplaceableProperties; |
| 23 | import org.dcache.util.DeprecatableProperties; |
| 24 | import org.dcache.util.Glob; |
| 25 | |
| 26 | import org.slf4j.LoggerFactory; |
| 27 | import ch.qos.logback.classic.Logger; |
| 28 | import ch.qos.logback.classic.LoggerContext; |
| 29 | import ch.qos.logback.classic.Level; |
| 30 | import ch.qos.logback.classic.encoder.PatternLayoutEncoder; |
| 31 | import ch.qos.logback.core.ConsoleAppender; |
| 32 | import ch.qos.logback.classic.spi.ILoggingEvent; |
| 33 | |
| 34 | /** |
| 35 | * Boot loader for dCache. This class contains the main method of |
| 36 | * dCache. It is responsible for parsing the configuration files and |
| 37 | * for boot strapping domains. |
| 38 | * |
| 39 | * All methods are static. The class is never instantiated. |
| 40 | */ |
| 41 | public class BootLoader |
| 42 | { |
| 43 | private static final String PROPERTY_DCACHE_LAYOUT_URI = "dcache.layout.uri"; |
| 44 | private static final String PROPERTY_HOST_NAME = "host.name"; |
| 45 | private static final String PROPERTY_HOST_FQDN = "host.fqdn"; |
| 46 | |
| 47 | private static final String CMD_START = "start"; |
| 48 | private static final String CMD_COMPILE = "compile"; |
| 49 | |
| 50 | private static final char OPT_SILENT = 'q'; |
| 51 | private static final String OPT_CONFIG_FILE = "f"; |
| 52 | private static final String OPT_CONFIG_FILE_DELIMITER = ":"; |
| 53 | |
| 54 | private static final String CONSOLE_APPENDER_NAME = "console"; |
| 55 | private static final String CONSOLE_APPENDER_PATTERN = "%-5level - %msg%n"; |
| 56 | |
| 57 | private BootLoader() |
| 58 | { |
| 59 | } |
| 60 | |
| 61 | private static void help() |
| 62 | { |
| 63 | System.err.println("SYNOPSIS:"); |
| 64 | System.err.println(" java org.dcache.util.BootLoader [-q] [-f=PATH[:PATH...]] COMMAND [ARGS]"); |
| 65 | System.err.println(); |
| 66 | System.err.println("OPTIONS:"); |
| 67 | System.err.println(" -q Suppress warnings."); |
| 68 | System.err.println(" -f Paths to the dCache setup files."); |
| 69 | System.err.println(); |
| 70 | System.err.println("COMMANDS:"); |
| 71 | System.err.println(" start DOMAIN"); |
| 72 | System.err.println(" Start a domain."); |
| 73 | System.err.println(); |
| 74 | System.err.println(" compile"); |
| 75 | System.err.println(" Compiles the layout to a shell script."); |
| 76 | System.exit(1); |
| 77 | } |
| 78 | |
| 79 | private static ReplaceableProperties getDefaults() |
| 80 | throws UnknownHostException |
| 81 | { |
| 82 | InetAddress localhost = InetAddress.getLocalHost(); |
| 83 | |
| 84 | ReplaceableProperties properties = |
| 85 | new ReplaceableProperties(System.getProperties()); |
| 86 | properties.setProperty(PROPERTY_HOST_NAME, |
| 87 | localhost.getHostName().split("\\.")[0]); |
| 88 | properties.setProperty(PROPERTY_HOST_FQDN, |
| 89 | localhost.getCanonicalHostName()); |
| 90 | return properties; |
| 91 | } |
| 92 | |
| 93 | private static ReplaceableProperties |
| 94 | loadConfiguration(ReplaceableProperties config, String[] paths) |
| 95 | throws IOException |
| 96 | { |
| 97 | for (String path: paths) { |
| 98 | config = new DeprecatableProperties(config); |
| 99 | File file = new File(path); |
| 100 | if (file.isFile()) { |
| 101 | config.loadFile(file); |
| 102 | } else if (file.isDirectory()) { |
| 103 | for (File entry: file.listFiles()) { |
| 104 | if (entry.isFile() && entry.getName().endsWith(".properties")) { |
| 105 | config.loadFile(entry); |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | return config; |
| 111 | } |
| 112 | |
| 113 | private static Layout loadLayout(ReplaceableProperties config) |
| 114 | throws IOException, URISyntaxException |
| 115 | { |
| 116 | Layout layout = new Layout(config); |
| 117 | layout.load(new URI(config.getReplacement(PROPERTY_DCACHE_LAYOUT_URI))); |
| 118 | return layout; |
| 119 | } |
| 120 | |
| 121 | private static String quote(String s) |
| 122 | { |
| 123 | return s.replace("\\", "\\\\").replace("$", "\\$").replace("`", "\\`").replace("\"", "\\\""); |
| 124 | } |
| 125 | |
| 126 | private static String quoteForCase(String s) |
| 127 | { |
| 128 | return quote(s).replace(")", "\\)").replace("?", "\\?").replace("*", "\\*").replace("[", "\\["); |
| 129 | } |
| 130 | |
| 131 | private static void compileToShell(ReplaceableProperties properties) |
| 132 | { |
| 133 | PrintStream out = System.out; |
| 134 | out.println(" case \"$1\" in"); |
| 135 | for (String key: properties.stringPropertyNames()) { |
| 136 | out.println(" " + quoteForCase(key) + ") echo \"" + quote(properties.getReplacement(key)) + "\";;"); |
| 137 | } |
| 138 | out.println(" *) undefinedProperty \"$1\" \"$2\";;"); |
| 139 | out.println(" esac"); |
| 140 | } |
| 141 | |
| 142 | private static void compileToShell(Layout layout) |
| 143 | { |
| 144 | PrintStream out = System.out; |
| 145 | out.println("getProperty()"); |
| 146 | out.println("{"); |
| 147 | out.println(" case \"$2\" in"); |
| 148 | out.println(" \"\")"); |
| 149 | compileToShell(layout.properties()); |
| 150 | out.println(" ;;"); |
| 151 | for (Domain domain: layout.getDomains()) { |
| 152 | out.println(" " + quoteForCase(domain.getName()) + ")"); |
| 153 | compileToShell(domain.properties()); |
| 154 | out.println(" ;;"); |
| 155 | } |
| 156 | out.println(" *)"); |
| 157 | out.println(" undefinedDomain \"$1\""); |
| 158 | out.println(" ;;"); |
| 159 | out.println(" esac;"); |
| 160 | out.println("}"); |
| 161 | } |
| 162 | |
| 163 | public static void main(String arguments[]) |
| 164 | { |
| 165 | try { |
| 166 | Args args = new Args(arguments); |
| 167 | if (args.argc() < 1) { |
| 168 | help(); |
| 169 | } |
| 170 | |
| 171 | /* Basic logging setup that will be used until the real |
| 172 | * log configuration is loaded. |
| 173 | */ |
| 174 | Level level = |
| 175 | args.isOneCharOption(OPT_SILENT) ? Level.ERROR : Level.WARN; |
| 176 | logToConsoleAtLevel(level); |
| 177 | |
| 178 | ReplaceableProperties config = getDefaults(); |
| 179 | String tmp = args.getOpt(OPT_CONFIG_FILE); |
| 180 | if (tmp != null) { |
| 181 | config = |
| 182 | loadConfiguration(config, tmp.split(OPT_CONFIG_FILE_DELIMITER)); |
| 183 | } |
| 184 | |
| 185 | Layout layout = loadLayout(config); |
| 186 | String command = args.argv(0); |
| 187 | if (command.equals(CMD_START)) { |
| 188 | if (args.argc() != 2) { |
| 189 | throw new IllegalArgumentException("Missing argument: Domain name"); |
| 190 | } |
| 191 | Domain domain = layout.getDomain(args.argv(1)); |
| 192 | if (domain == null) { |
| 193 | throw new IllegalArgumentException("No such domain: " + args.argv(1)); |
| 194 | } |
| 195 | |
| 196 | domain.start(); |
| 197 | } else if (command.equals(CMD_COMPILE)) { |
| 198 | compileToShell(layout); |
| 199 | } else { |
| 200 | throw new IllegalArgumentException("Invalid command: " + command); |
| 201 | } |
| 202 | } catch (IllegalArgumentException e) { |
| 203 | System.err.println(e.getMessage()); |
| 204 | System.exit(1); |
| 205 | } catch (FileNotFoundException e) { |
| 206 | System.err.println(e.getMessage()); |
| 207 | System.exit(1); |
| 208 | } catch (IOException e) { |
| 209 | System.err.println(e.toString()); |
| 210 | System.exit(1); |
| 211 | } catch (URISyntaxException e) { |
| 212 | System.err.println(e.getMessage()); |
| 213 | System.exit(1); |
| 214 | } catch (CommandException e) { |
| 215 | System.err.println(e.getMessage()); |
| 216 | System.exit(1); |
| 217 | } catch (RuntimeException e) { |
| 218 | e.printStackTrace(); |
| 219 | System.exit(1); |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | private static void logToConsoleAtLevel(Level level) |
| 224 | { |
| 225 | LoggerContext loggerContext = |
| 226 | (LoggerContext) LoggerFactory.getILoggerFactory(); |
| 227 | loggerContext.reset(); |
| 228 | |
| 229 | ConsoleAppender<ILoggingEvent> ca = |
| 230 | new ConsoleAppender<ILoggingEvent>(); |
| 231 | ca.setTarget("System.err"); |
| 232 | ca.setContext(loggerContext); |
| 233 | ca.setName(CONSOLE_APPENDER_NAME); |
| 234 | PatternLayoutEncoder pl = new PatternLayoutEncoder(); |
| 235 | pl.setContext(loggerContext); |
| 236 | pl.setPattern(CONSOLE_APPENDER_PATTERN); |
| 237 | pl.start(); |
| 238 | |
| 239 | ca.setEncoder(pl); |
| 240 | ca.start(); |
| 241 | Logger rootLogger = loggerContext.getLogger(Logger.ROOT_LOGGER_NAME); |
| 242 | rootLogger.addAppender(ca); |
| 243 | rootLogger.setLevel(level); |
| 244 | } |
| 245 | } |