Adding configuration object

checkstyle-suppressions.xml

@@ -23,6 +23,9 @@ under the License.
     "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 
 <suppressions>
+        <suppress checks="MethodLength"
+                  files="Configuration.java"
+                  lines="34-45"/>
         <suppress checks="MethodLength"
                   files="NagiosAwareRunner.java"
                   lines="62-84"/>

src/main/java/hippie/configurations/Configuration.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2009, Kent R. Spillner <kspillner@acm.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+package hippie.configurations;
+
+import java.util.Properties;
+
+/**
+ * Understands how the user wants hippie to behave.
+ */
+public class Configuration {
+        private final int connectionTimeout;
+
+        private final String nagiosPassword;
+
+        private final int nagiosPort;
+
+        private final String nagiosServer;
+
+        private final int responseTimeout;
+
+        public Configuration(final Properties properties) {
+                nagiosServer =
+                    properties.getProperty("hippie.nsca.server");
+                nagiosPassword =
+                    properties.getProperty("hippie.nsca.password");
+                nagiosPort = toInt(
+                    properties.getProperty("hippie.nsca.port", "5667"));
+                connectionTimeout = toInt(properties.getProperty(
+                    "hippie.nsca.timeout.connection", "5000"));
+                responseTimeout = toInt(properties.getProperty(
+                    "hippie.nsca.timeout.response", "15000"));
+        }
+
+        public String getNagiosServer() {
+                if (nagiosServer == null) {
+                        bombOnNull("hippie.nsca.server");
+                } else if (isEmpty(nagiosServer)) {
+                        bombOnEmpty("hippie.nsca.server");
+                }
+
+                return nagiosServer;
+        }
+
+        public String getNagiosPassword() {
+                if (nagiosPassword == null) {
+                        bombOnNull("hippie.nsca.password");
+                } else if (isEmpty(nagiosPassword)) {
+                        bombOnEmpty("hippie.nsca.password");
+                }
+
+                return nagiosPassword;
+        }
+
+        public int getNagiosPort() {
+                return nagiosPort;
+        }
+
+        public int getConnectionTimeout() {
+                return connectionTimeout;
+        }
+
+        public int getResponseTimeout() {
+                return responseTimeout;
+        }
+
+        private boolean isEmpty(final String value) {
+                return "".equals(value.trim());
+        }
+
+        private int toInt(final String value) {
+                return Integer.valueOf(value);
+        }
+
+        private void bombOnEmpty(final String property) {
+                bomb(property, "empty");
+        }
+
+        private void bombOnNull(final String property) {
+                bomb(property, "not set");
+        }
+
+        private void bomb(final String property, final String problem) {
+                throw new IllegalStateException(
+                    "The property " + property + " is " + problem);
+        }
+}