Feature/fortune (#6324)

* added fortune cookies

arangod/CMakeLists.txt

@@ -458,6 +458,7 @@ SET(ARANGOD_SOURCES
   RestServer/EndpointFeature.cpp
   RestServer/FileDescriptorsFeature.cpp
   RestServer/FlushFeature.cpp
+  RestServer/FortuneFeature.cpp
   RestServer/FrontendFeature.cpp
   RestServer/InitDatabaseFeature.cpp
   RestServer/LockfileFeature.cpp

arangod/RestServer/FortuneFeature.cpp

@@ -0,0 +1,81 @@
+////////////////////////////////////////////////////////////////////////////////
+/// DISCLAIMER
+///
+/// Copyright 2016 ArangoDB GmbH, Cologne, Germany
+///
+/// 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.
+///
+/// Copyright holder is ArangoDB GmbH, Cologne, Germany
+///
+/// @author Jan Steemann
+////////////////////////////////////////////////////////////////////////////////
+
+#include "RestServer/FortuneFeature.h"
+
+#include "Logger/Logger.h"
+#include "ProgramOptions/Parameters.h"
+#include "ProgramOptions/ProgramOptions.h"
+#include "Random/RandomGenerator.h"
+
+using namespace arangodb;
+using namespace arangodb::options;
+
+namespace {
+
+static char const* cookies[] = {
+  "The number of computer scientists in a room is inversely proportional to the number of bugs in their code.",
+  "Unnamed Law: If it happens, it must be possible.",
+  "Of course there's no reason for it, it's just our policy.",
+  "Your mode of life will be changed to ASCII.",
+  "My program works if i take out the bugs",
+  "Your lucky number has been disconnected.",
+  "Any sufficiently advanced bug is indistinguishable from a feature.",
+  "Real Users hate Real Programmers.",
+  "Reality is just a crutch for people who can't handle science fiction.",
+  "You're definitely on their list.  The question to ask next is what list it is.",
+  "Any given program will expand to fill available memory.",
+  "Steinbach's Guideline for Systems Programming: Never test for an error condition you don't know how to handle.",
+  "Bug, n: A son of a glitch.",
+  "Recursion n.: See Recursion.",
+  "I think we're in trouble.  -- Han Solo",
+  "18,446,744,073,709,551,616 is a big number",
+  "Civilization, as we know it, will end sometime this evening. See SYSNOTE tomorrow for more information.",
+  "Everything ends badly.  Otherwise it wouldn't end.",
+  "The moon may be smaller than Earth, but it's further away.",
+  "Never make anything simple and efficient when a way can be found to make it complex and wonderful.",
+  ""
+};
+
+} // namespace
+
+FortuneFeature::FortuneFeature(
+    application_features::ApplicationServer& server)
+    : ApplicationFeature(server, "Fortune"), _fortune(false) {
+  startsAfter("Bootstrap");
+}
+
+void FortuneFeature::collectOptions(std::shared_ptr<ProgramOptions> options) {
+  options->addHiddenOption("fortune", "show fortune cookie on startup",
+                           new BooleanParameter(&_fortune));
+}
+
+void FortuneFeature::start() {
+  if (!_fortune) {
+    return;
+  }
+
+  uint32_t r = RandomGenerator::interval(sizeof(::cookies) / sizeof(::cookies)[0]);
+  if (strlen(::cookies[r]) > 0) {
+    LOG_TOPIC(INFO, Logger::FIXME) << ::cookies[r];
+  }
+}

arangod/RestServer/FortuneFeature.h

@@ -0,0 +1,42 @@
+////////////////////////////////////////////////////////////////////////////////
+/// DISCLAIMER
+///
+/// Copyright 2016 ArangoDB GmbH, Cologne, Germany
+///
+/// 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.
+///
+/// Copyright holder is ArangoDB GmbH, Cologne, Germany
+///
+/// @author Jan Steemann
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef APPLICATION_FEATURES_FORTUNE_FEATURE_H
+#define APPLICATION_FEATURES_FORTUNE_FEATURE_H 1
+
+#include "ApplicationFeatures/ApplicationFeature.h"
+
+namespace arangodb {
+class FortuneFeature final : public application_features::ApplicationFeature {
+ public:
+  explicit FortuneFeature(application_features::ApplicationServer&);
+
+ public:
+  void collectOptions(std::shared_ptr<options::ProgramOptions>) override final;
+  void start() override final;
+
+ private:
+  bool _fortune;
+};
+}
+
+#endif

arangod/RestServer/arangod.cpp

@@ -79,6 +79,7 @@
 #include "RestServer/EndpointFeature.h"
 #include "RestServer/FileDescriptorsFeature.h"
 #include "RestServer/FlushFeature.h"
+#include "RestServer/FortuneFeature.h"
 #include "RestServer/FrontendFeature.h"
 #include "RestServer/InitDatabaseFeature.h"
 #include "RestServer/LockfileFeature.h"
@@ -180,6 +181,7 @@ static int runServer(int argc, char** argv, ArangoGlobalContext &context) {
     server.addFeature(new EnvironmentFeature(server));
     server.addFeature(new FileDescriptorsFeature(server));
     server.addFeature(new FlushFeature(server));
+    server.addFeature(new FortuneFeature(server));
     server.addFeature(new FoxxQueuesFeature(server));
     server.addFeature(new FrontendFeature(server));
     server.addFeature(new GeneralServerFeature(server));