Fixed gRPC Client Hang issue

docs/FeatureToggles.md

@@ -0,0 +1,21 @@
+# Introducing Feature Toggles
+
+Starting from release v1.2.0.1 we have added support for feature toggles. This allows you to enable or disable certain features in the application without the need to redeploy the application.
+
+## How to use feature toggles
+
+Feature toggles are managed through the `feature_config.ini` file (located next to _labview_grpc_server_ library). You can find the `data` section in the file. Here is an example of how to use feature toggles:
+
+```ini
+[data]
+EfficientMessageCopy = TRUE
+useOccurrence = TRUE
+```
+
+In the example above, the `EfficientMessageCopy` and `useOccurrence` features are enabled by default. If you want to disable a feature, you can set the value to `FALSE`.
+
+### More about the flags
+
+1. `EfficientMessageCopy` - This feature is used to enable or disable the efficient message copy feature. When enabled, the client will use efficient message copy to have throughput. When disabled, the client will use the default message copy.
+
+2. `useOccurrence` - This feature is used to enable or disable the occurrence feature. When enabled, the client will use occurrence to manage synchroniation between LabVIEW execution threads. When disabled, the client will use not use LabVIEW occurrences.

docs/QuickStart.md

@@ -169,6 +169,11 @@ From the same project,
 
 ![Say Hello Again Client Code implementation](images/HelloAgain-Client-Code.png "Say Hello Again Client Code implementation")
 
+
+### [Optional] Configure feature toggles
+
+[Feature Toggle documentation](./FeatureToggles.md)
+
 ### Run!
 
 Just like we did before, from the `examples/helloworld` directory:

labview source/gRPC lv Support/grpc-lvsupport.lvlib

@@ -108,5 +108,6 @@
 		<Item Name="Set LVRT Module Path.vi" Type="VI" URL="../Shared/Set LVRT Module Path.vi"/>
 		<Item Name="Wait On Occurence.vi" Type="VI" URL="../Shared/Wait On Occurence.vi"/>
 		<Item Name="TranslateGrpcError.vi" Type="VI" URL="../Shared/TranslateGrpcError.vi"/>
+		<Item Name="Wait On Occurrence Wrapper.vi" Type="VI" URL="../Shared/Wait On Occurrence Wrapper.vi"/>
 	</Item>
 </Library>

src/feature_toggles.cc

@@ -3,6 +3,7 @@
 #include <fstream>
 #include <sstream>
 #include <map>
+#include <algorithm>
 
 namespace grpc_labview {
     // Function to read feature configurations from an INI file
@@ -35,7 +36,10 @@ namespace grpc_labview {
                 std::string key, value;
                 if (std::getline(iss, key, '=') && std::getline(iss, value)) {
                     // Append section name to key for uniqueness
+                    key.erase(std::remove_if(key.begin(), key.end(), ::isspace),key.end());
+                    value.erase(std::remove_if(value.begin(), value.end(), ::isspace),value.end());
                     std::string fullKey = currentSection.empty() ? key : currentSection + "_" + key;
+                    std::transform(value.begin(), value.end(), value.begin(), ::tolower);
                     featureFlags[fullKey] = (value == "true");
                 }
             }

src/feature_toggles.h

@@ -1,17 +1,18 @@
 #include <iostream>
 #include <fstream>
 #include <sstream>
-#include <map>
+#include <unordered_map>
 
 namespace grpc_labview {
     class FeatureConfig {
     private:
-        std::map<std::string, bool> featureFlags;
+        std::unordered_map<std::string, bool> featureFlags;
 
         // Constructor to initialize with default values
         FeatureConfig() {
             featureFlags["gRPC"] = true; // Enable gRPC by default as an example, this will never be overridden by config file
-            featureFlags["EfficientMessageCopy"] = true;
+            featureFlags["data_EfficientMessageCopy"] = true;
+            featureFlags["data_useOccurrence"] = true;
         }
 
     public:
@@ -27,4 +28,5 @@ namespace grpc_labview {
         // Function to check if a feature is enabled
         bool isFeatureEnabled(const std::string& featureName) const;
     };
+
 }