[2835] The ClientList::getStatus method

So one can extract status of all the data source clients from the list
and allow using it from future management of the memory segments.

src/lib/datasrc/client_list.cc

@@ -475,5 +475,16 @@ ConfigurableClientList::getDataSourceClient(const string& type,
     return (DataSourcePair(&container->getInstance(), container));
 }
 
+vector<DataSourceStatus>
+ConfigurableClientList::getStatus() const {
+    vector<DataSourceStatus> result;
+    BOOST_FOREACH(const DataSourceInfo& info, data_sources_) {
+        // TODO: Once we support mapped cache, provide the correct MSS_ value
+        result.push_back(DataSourceStatus(info.name_, info.cache_ ? MSS_LOCAL :
+                                          MSS_UNUSED));
+    }
+    return (result);
+}
+
 }
 }

src/lib/datasrc/client_list.h

@@ -430,6 +430,12 @@ public:
     virtual DataSourcePair getDataSourceClient(const std::string& type,
                                                const data::ConstElementPtr&
                                                configuration);
+
+    /// \brief Get status information of all internal data sources.
+    ///
+    /// Get a DataSourceStatus for current state of each data source client
+    /// in this list.
+    std::vector<DataSourceStatus> getStatus() const;
 public:
     /// \brief Access to the data source clients.
     ///

src/lib/datasrc/tests/client_list_unittest.cc

@@ -512,12 +512,12 @@ TEST_F(ListTest, configureMulti) {
     const ConstElementPtr elem(Element::fromJSON("["
         "{"
         "   \"type\": \"type1\","
-        "   \"cache\": \"off\","
+        "   \"cache-enable\": false,"
         "   \"params\": {}"
         "},"
         "{"
         "   \"type\": \"type2\","
-        "   \"cache\": \"off\","
+        "   \"cache-enable\": false,"
         "   \"params\": {}"
         "}]"
     ));
@@ -546,7 +546,7 @@ TEST_F(ListTest, configureParams) {
         ConstElementPtr elem(Element::fromJSON(string("["
             "{"
             "   \"type\": \"t\","
-            "   \"cache\": \"off\","
+            "   \"cache-enable\": false,"
             "   \"params\": ") + *param +
             "}]"));
         list_->configure(elem, true);
@@ -555,6 +555,31 @@ TEST_F(ListTest, configureParams) {
     }
 }
 
+TEST_F(ListTest, status) {
+    EXPECT_TRUE(list_->getStatus().empty());
+    const ConstElementPtr elem(Element::fromJSON("["
+        "{"
+        "   \"type\": \"type1\","
+        "   \"cache-enable\": false,"
+        "   \"params\": {}"
+        "},"
+        "{"
+        "   \"type\": \"type2\","
+        "   \"cache-enable\": true,"
+        "   \"cache-zones\": [],"
+        "   \"name\": \"Test name\","
+        "   \"params\": {}"
+        "}]"
+    ));
+    list_->configure(elem, true);
+    const vector<DataSourceStatus> statuses(list_->getStatus());
+    ASSERT_EQ(2, statuses.size());
+    EXPECT_EQ("type1", statuses[0].getName());
+    EXPECT_EQ(MSS_UNUSED, statuses[0].getSegmentState());
+    EXPECT_EQ("Test name", statuses[1].getName());
+    EXPECT_EQ(MSS_LOCAL, statuses[1].getSegmentState());
+}
+
 TEST_F(ListTest, wrongConfig) {
     const char* configs[] = {
         // A lot of stuff missing from there