Publish

2 files changed, 103 insertions, 0 deletions

diff --git a/defaults/src/main/java/com/yahoo/vespa/defaults/Defaults.java b/defaults/src/main/java/com/yahoo/vespa/defaults/Defaults.java
new file mode 100644
index 00000000000..bbca3c3aa34
--- /dev/null
+++ b/defaults/src/main/java/com/yahoo/vespa/defaults/Defaults.java
@@ -0,0 +1,96 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.vespa.defaults;
+
+import java.util.Optional;
+import java.util.logging.Logger;
+
+/**
+ * The defaults of basic Vespa configuration variables.
+ * Use Defaults.getDefaults() to access the defaults of this runtime environment.
+ *
+ * @author arnej27959
+ * @author bratseth
+ */
+public class Defaults {
+
+    private static final Logger log = Logger.getLogger(Defaults.class.getName());
+    private static final Defaults defaults = new Defaults();
+
+    private final String vespaHome;
+    private final int vespaWebServicePort;
+    private final int vespaPortBase;
+
+    private Defaults() {
+        vespaHome = findVespaHome();
+        vespaWebServicePort = findVespaWebServicePort();
+        vespaPortBase = 19000; // TODO
+    }
+
+    private String findVespaHome() {
+        Optional<String> vespaHomeEnv = Optional.ofNullable(System.getenv("VESPA_HOME"));
+        if ( ! vespaHomeEnv.isPresent() || vespaHomeEnv.get().trim().isEmpty()) {
+            log.info("VESPA_HOME not set, using /opt/vespa/");
+            return "/opt/vespa/";
+        }
+        String vespaHome = vespaHomeEnv.get();
+        if ( ! vespaHome.endsWith("/"))
+            vespaHome = vespaHome + "/";
+        return vespaHome;
+    }
+
+    private int findVespaWebServicePort() {
+        Optional<String> vespaWebServicePortString = Optional.ofNullable(System.getenv("VESPA_WEB_SERVICE_PORT"));
+        if ( ! vespaWebServicePortString.isPresent() || vespaWebServicePortString.get().trim().isEmpty()) {
+            log.info("VESPA_WEB_SERVICE_PORT not set, using 8080");
+            return 8080;
+        }
+        try {
+            return Integer.parseInt(vespaWebServicePortString.get());
+        }
+        catch (NumberFormatException e) {
+            throw new IllegalArgumentException("VESPA_WEB_SERVICE_PORT must be an integer, was '" +
+                                               vespaWebServicePortString.get() + "'");
+        }
+    }
+
+    /**
+     * Returns the path to the root under which Vespa should read and write files, ending by "/".
+     *
+     * @return the vespa home directory, ending by "/"
+     */
+    public String vespaHome() { return vespaHome; }
+
+    /**
+     * Returns an absolute path produced by prepending vespaHome to the argument if it is relative.
+     * If the path starts by "/" (absolute) or "./" (explicitly relative - useful for tests),
+     * it is returned as-is.
+     *
+     * @param path the path to prepend vespaHome to unless it is absolute
+     * @return the given path string with the root path given from
+     *         vespaHome() prepended, unless the given path is absolute, in which
+     *         case it is be returned as-is
+     */
+    public String underVespaHome(String path) {
+        if (path.startsWith("/")) return path;
+        if (path.startsWith("./")) return path;
+        return vespaHome() + path;
+    }
+
+    /**
+     * Returns the port number where Vespa web services should be available.
+     *
+     * @return the vespa webservice port
+     */
+    public int vespaWebServicePort() { return vespaWebServicePort; }
+
+    /**
+     * Returns the base for port numbers where the Vespa services should listen.
+     *
+     * @return the vespa base number for ports
+     */
+    public int vespaPortBase() { return vespaPortBase; }
+
+    /** Returns the defaults of this runtime environment */
+    public static Defaults getDefaults() { return defaults; }
+
+}
diff --git a/defaults/src/main/java/com/yahoo/vespa/defaults/package-info.java b/defaults/src/main/java/com/yahoo/vespa/defaults/package-info.java
new file mode 100644
index 00000000000..b1a42c3596f
--- /dev/null
+++ b/defaults/src/main/java/com/yahoo/vespa/defaults/package-info.java
@@ -0,0 +1,7 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+@ExportPackage
+@PublicApi
+package com.yahoo.vespa.defaults;
+
+import com.yahoo.api.annotations.PublicApi;
+import com.yahoo.osgi.annotation.ExportPackage;