How to remove configuration? about microocpp

[ChaitanyaYeole02]

@matth-x

This is the snippet of my code

if (remove_config) {
    Serial.println(F("[Configuration] Removing Configuration"));
    container->removeConfiguration(configuration);
    configuration->setToBeRemoved();
    configuration = NULL;
}

I added this snippet at the end of declareConfiguration function and made remove_config = true so that it will delete the configuration which I am defining.

But it's not getting removed. What is wrong here or is there any other simple way to remove the configuration?

[akashdk191]

bool removeConfiguration(const char *key,const char *filename) {

std::shared_ptr<ConfigurationContainer> container = getContainer(filename);

if (!container) {
    Serial.print(F("[Configuration] removeConfiguration: init new configurations container on flash filesystem: "));
    Serial.println(filename);

    if (!container->load()) {
        Serial.print(F("[Configuration] Cannot load file contents.\n"));
    }
}

std::shared_ptr<AbstractConfiguration> configuration = container->getConfiguration(key);

if (configuration ) {
    if(DEBUG_OUT)
    {
        Serial.println(F("[Configuration] Removing configuration"));
        Serial.println(key);
        Serial.println("\n");
    }
    container->removeConfiguration(configuration);
    configuration->setToBeRemoved();
    configuration = NULL;
    return true;
}

return false;

}

I added a new function to remove configuration and it's working perfectly fine.

[prakharkalani]

Why are we removing this configuration file?

[matth-x]

Once a configuration is declared, it is valid for the lifetime of the library. You can only control if to write the configuration back to the persistent memory with setToBeRemoved(). If set, after the next reboot the information about the configuration will be gone and the configuration is finally deleted.

Thank you for your input @ChaitanyaYeole02 and @akashdk191. Flagging the object as removed did not invalidate the persistent memory. You probably observed that the remove operation was comitted too late.

And I introduced that the operation Change Configuration removes (writeable) configurations if "value": "". Both changes are in 004b60b.