feat: hello-cpp-server

examples/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_subdirectory(hello-c-client)
 add_subdirectory(hello-cpp-client)
+add_subdirectory(hello-cpp-server)

examples/hello-c-client/CMakeLists.txt

@@ -4,12 +4,12 @@ cmake_minimum_required(VERSION 3.19)
 project(
         LaunchDarklyHelloCClient
         VERSION 0.1
-        DESCRIPTION "LaunchDarkly Hello C Client"
+        DESCRIPTION "LaunchDarkly Hello C Client-side SDK"
         LANGUAGES C
 )
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
-add_executable(hello-c main.c)
-target_link_libraries(hello-c PRIVATE launchdarkly::client launchdarkly::sse launchdarkly::common Threads::Threads)
+add_executable(hello-c-client main.c)
+target_link_libraries(hello-c-client PRIVATE launchdarkly::client launchdarkly::sse launchdarkly::common Threads::Threads)

examples/hello-cpp-client/CMakeLists.txt

@@ -4,12 +4,12 @@ cmake_minimum_required(VERSION 3.19)
 project(
         LaunchDarklyHelloCPPClient
         VERSION 0.1
-        DESCRIPTION "LaunchDarkly Hello CPP Client"
+        DESCRIPTION "LaunchDarkly Hello CPP Client-side SDK"
         LANGUAGES CXX
 )
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
-add_executable(hello-cpp main.cpp)
-target_link_libraries(hello-cpp PRIVATE launchdarkly::client Threads::Threads)
+add_executable(hello-cpp-client main.cpp)
+target_link_libraries(hello-cpp-client PRIVATE launchdarkly::client Threads::Threads)

examples/hello-cpp-client/main.cpp

@@ -1,8 +1,8 @@
 #include <launchdarkly/client_side/client.hpp>
 #include <launchdarkly/context_builder.hpp>
 
-#include <iostream>
 #include <cstring>
+#include <iostream>
 
 // Set MOBILE_KEY to your LaunchDarkly mobile key.
 #define MOBILE_KEY ""
@@ -18,7 +18,7 @@ using namespace launchdarkly;
 int main() {
     if (!strlen(MOBILE_KEY)) {
         printf(
-            "*** Please edit main.c to set MOBILE_KEY to your LaunchDarkly "
+            "*** Please edit main.cpp to set MOBILE_KEY to your LaunchDarkly "
             "mobile key first\n\n");
         return 1;
     }

examples/hello-cpp-server/CMakeLists.txt

@@ -0,0 +1,15 @@
+# Required for Apple Silicon support.
+cmake_minimum_required(VERSION 3.19)
+
+project(
+        LaunchDarklyHelloCPPServer
+        VERSION 0.1
+        DESCRIPTION "LaunchDarkly Hello CPP Server-side SDK"
+        LANGUAGES CXX
+)
+
+set(THREADS_PREFER_PTHREAD_FLAG ON)
+find_package(Threads REQUIRED)
+
+add_executable(hello-cpp-server main.cpp)
+target_link_libraries(hello-cpp-server PRIVATE launchdarkly::server Threads::Threads)

examples/hello-cpp-server/main.cpp

@@ -0,0 +1,59 @@
+#include <launchdarkly/context_builder.hpp>
+#include <launchdarkly/server_side/client.hpp>
+
+#include <cstring>
+#include <iostream>
+
+// Set MOBILE_KEY to your LaunchDarkly mobile key.
+#define MOBILE_KEY ""
+
+// Set FEATURE_FLAG_KEY to the feature flag key you want to evaluate.
+#define FEATURE_FLAG_KEY "my-boolean-flag"
+
+// Set INIT_TIMEOUT_MILLISECONDS to the amount of time you will wait for
+// the client to become initialized.
+#define INIT_TIMEOUT_MILLISECONDS 3000
+
+using namespace launchdarkly;
+int main() {
+    if (!strlen(MOBILE_KEY)) {
+        printf(
+            "*** Please edit main.cpp to set MOBILE_KEY to your LaunchDarkly "
+            "mobile key first\n\n");
+        return 1;
+    }
+
+    auto config = server_side::ConfigBuilder(MOBILE_KEY).Build();
+    if (!config) {
+        std::cout << "error: config is invalid: " << config.error() << '\n';
+        return 1;
+    }
+
+    auto client = server_side::Client(std::move(*config));
+
+    auto start_result = client.StartAsync();
+    auto status = start_result.wait_for(
+        std::chrono::milliseconds(INIT_TIMEOUT_MILLISECONDS));
+    if (status == std::future_status::ready) {
+        if (start_result.get()) {
+            std::cout << "*** SDK successfully initialized!\n\n";
+        } else {
+            std::cout << "*** SDK failed to initialize\n";
+            return 1;
+        }
+    } else {
+        std::cout << "*** SDK initialization didn't complete in "
+                  << INIT_TIMEOUT_MILLISECONDS << "ms\n";
+        return 1;
+    }
+
+    auto context =
+        ContextBuilder().Kind("user", "example-user-key").Name("Sandy").Build();
+
+    bool flag_value = client.BoolVariation(context, FEATURE_FLAG_KEY, false);
+
+    std::cout << "*** Feature flag '" << FEATURE_FLAG_KEY << "' is "
+              << (flag_value ? "true" : "false") << " for this user\n\n";
+
+    return 0;
+}