Replicate Pantheon Versioning system (Consensys#14)

EthFirewall will build with the version as stored in the gradle.properties
file in the root directory.

ethfirewall/src/main/java/tech/pegasys/ethfirewall/EthFirewallCommandLineConfig.java

@@ -35,7 +35,7 @@
     abbreviateSynopsis = true,
     name = "ethfirewall",
     mixinStandardHelpOptions = true,
-    versionProvider = VersionInfo.class,
+    versionProvider = VersionProvider.class,
     header = "Usage:",
     synopsisHeading = "%n",
     descriptionHeading = "%nDescription:%n%n",

ethfirewall/src/main/java/tech/pegasys/ethfirewall/EthFirewallInfo.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.ethfirewall;
+
+public class EthFirewallInfo {
+  private static final String CLIENT_IDENTITY = "ethfirewall" + "";
+  private static final String VERSION =
+      CLIENT_IDENTITY
+          + "/v"
+          + EthFirewallInfo.class.getPackage().getImplementationVersion()
+          + "/"
+          + PlatformDetector.getOS()
+          + "/"
+          + PlatformDetector.getVM();
+
+  private EthFirewallInfo() {}
+
+  public static String clientIdentity() {
+    return CLIENT_IDENTITY;
+  }
+
+  public static String version() {
+    return VERSION;
+  }
+}

ethfirewall/src/main/java/tech/pegasys/ethfirewall/PlatformDetector.java

@@ -0,0 +1,199 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.ethfirewall;
+
+import java.util.Locale;
+
+/**
+ * Detects OS and VMs.
+ *
+ * <p>Derived from Detector.java https://github.com/trustin/os-maven-plugin/ version 59fd029 on 21
+ * Apr 2018, Copyright 2014 Trustin Heuiseung Lee.
+ */
+public class PlatformDetector {
+
+  private static String _os;
+  private static String _osType;
+  private static String _vm;
+
+  public static String getOSType() {
+    if (_osType == null) {
+      detect();
+    }
+    return _osType;
+  }
+
+  public static String getOS() {
+    if (_os == null) {
+      detect();
+    }
+    return _os;
+  }
+
+  public static String getVM() {
+    if (_vm == null) {
+      detect();
+    }
+    return _vm;
+  }
+
+  private static final String UNKNOWN = "unknown";
+
+  private static void detect() {
+    final String detectedOS = normalizeOS(normalize("os.name"));
+    final String detectedArch = normalizeArch(normalize("os.arch"));
+    final String detectedVM = normalizeVM(normalize("java.vendor"), normalize("java.vm.name"));
+    final String detectedJavaVersion = normalizeJavaVersion("java.specification.version");
+
+    _os = detectedOS + '-' + detectedArch;
+    _osType = detectedOS;
+    _vm = detectedVM + "-java-" + detectedJavaVersion;
+  }
+
+  private static String normalizeOS(final String osName) {
+    if (osName.startsWith("aix")) {
+      return "aix";
+    }
+    if (osName.startsWith("hpux")) {
+      return "hpux";
+    }
+    if (osName.startsWith("os400")) {
+      // Avoid the names such as os4000
+      if (osName.length() <= 5 || !Character.isDigit(osName.charAt(5))) {
+        return "os400";
+      }
+    }
+    if (osName.startsWith("linux")) {
+      return "linux";
+    }
+    if (osName.startsWith("macosx") || osName.startsWith("osx")) {
+      return "osx";
+    }
+    if (osName.startsWith("freebsd")) {
+      return "freebsd";
+    }
+    if (osName.startsWith("openbsd")) {
+      return "openbsd";
+    }
+    if (osName.startsWith("netbsd")) {
+      return "netbsd";
+    }
+    if (osName.startsWith("solaris") || osName.startsWith("sunos")) {
+      return "sunos";
+    }
+    if (osName.startsWith("windows")) {
+      return "windows";
+    }
+
+    return UNKNOWN;
+  }
+
+  private static String normalizeArch(final String osArch) {
+    if (osArch.matches("^(x8664|amd64|ia32e|em64t|x64)$")) {
+      return "x86_64";
+    }
+    if (osArch.matches("^(x8632|x86|i[3-6]86|ia32|x32)$")) {
+      return "x86_32";
+    }
+    if (osArch.matches("^(ia64w?|itanium64)$")) {
+      return "itanium_64";
+    }
+    if ("ia64n".equals(osArch)) {
+      return "itanium_32";
+    }
+    if (osArch.matches("^(sparc|sparc32)$")) {
+      return "sparc_32";
+    }
+    if (osArch.matches("^(sparcv9|sparc64)$")) {
+      return "sparc_64";
+    }
+    if (osArch.matches("^(arm|arm32)$")) {
+      return "arm_32";
+    }
+    if ("aarch64".equals(osArch)) {
+      return "aarch_64";
+    }
+    if (osArch.matches("^(mips|mips32)$")) {
+      return "mips_32";
+    }
+    if (osArch.matches("^(mipsel|mips32el)$")) {
+      return "mipsel_32";
+    }
+    if ("mips64".equals(osArch)) {
+      return "mips_64";
+    }
+    if ("mips64el".equals(osArch)) {
+      return "mipsel_64";
+    }
+    if (osArch.matches("^(ppc|ppc32)$")) {
+      return "ppc_32";
+    }
+    if (osArch.matches("^(ppcle|ppc32le)$")) {
+      return "ppcle_32";
+    }
+    if ("ppc64".equals(osArch)) {
+      return "ppc_64";
+    }
+    if ("ppc64le".equals(osArch)) {
+      return "ppcle_64";
+    }
+    if ("s390".equals(osArch)) {
+      return "s390_32";
+    }
+    if ("s390x".equals(osArch)) {
+      return "s390_64";
+    }
+
+    return UNKNOWN;
+  }
+
+  static String normalizeVM(final String javaVendor, final String javaVmName) {
+    if (javaVmName.contains("graalvm")) {
+      return "graalvm";
+    }
+    if (javaVendor.contains("oracle")) {
+      if (javaVmName.contains("openjdk")) {
+        return "oracle_openjdk";
+      } else {
+        return "oracle";
+      }
+    }
+    if (javaVendor.contains("adoptopenjdk")) {
+      return "adoptopenjdk";
+    }
+    if (javaVendor.contains("openj9")) {
+      return "openj9";
+    }
+    if (javaVendor.contains("azul")) {
+      if (javaVmName.contains("zing")) {
+        return "zing";
+      } else {
+        return "zulu";
+      }
+    }
+
+    return "-" + javaVendor + "-" + javaVmName;
+  }
+
+  static String normalizeJavaVersion(final String javaVersion) {
+    // These are already normalized.
+    return System.getProperty(javaVersion);
+  }
+
+  private static String normalize(final String value) {
+    if (value == null) {
+      return "";
+    }
+    return System.getProperty(value).toLowerCase(Locale.US).replaceAll("[^a-z0-9]+", "");
+  }
+}

ethfirewall/src/main/java/tech/pegasys/ethfirewall/VersionProvider.java

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package tech.pegasys.ethfirewall;
+
+import picocli.CommandLine;
+
+public class VersionProvider implements CommandLine.IVersionProvider {
+  @Override
+  public String[] getVersion() {
+    return new String[] {EthFirewallInfo.version()};
+  }
+}

gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx1g
+version=0.0.2-SNAPSHOT
+