exampleLoggingMain.cpp

#include "exampleLogging.h"
#include <unistd.h>

#include "ivi-logging-types.h"
#include <iostream>

// If an application is not multi-instance, we can define its unique identifier
LOG_DEFINE_APP_IDS("MyAp", "This is a small application showing how to use ivi-logging");

// Instantiate a log context and define it as default for this module
LOG_DECLARE_DEFAULT_CONTEXT(mainContext, "MAIN", "This is a description of that logging context");

// Instantiate another context which can be used instead of the previous one if specified
LOG_DECLARE_CONTEXT(anotherContext, "CXT2", "Another context");

namespace MyNamespace {

// Instantiate a log context and define it as default for this module
LOG_DECLARE_DEFAULT_CONTEXT(defaultContextForSpecificNamespace, "MAI2", "This is a description of that logging context");

void MyFunction() {
	log_info() << "My function called";
}

}

struct MyClass {

	// Define the log context to be used for that class. This overrides any default context which might have previously be set
	LOG_DECLARE_CLASS_CONTEXT("CCTX", "This is a class-specific context");

	void doSomething() {
		log_debug() << "We are doing something"; // This log uses the class log context
	}

};

struct MySubClass : MyClass {

	// Define the log context to be used for that class. This overrides any default context which might have previously be set
	LOG_DECLARE_CLASS_CONTEXT("CC", "This is a class-specific context for our sub-class");

	void doSomethingElse() {
		log_debug() << "We are doing something else";
		log_verbose() << "This is a verbose log";
	}

};

struct MyClassWithImportedContext {

	// Define the log context to be used for that class. This overrides any default context which might have previously be set
	LOG_SET_CLASS_CONTEXT(anotherContext);

	void doSomething() {
		log_debug() << "We are doing something. Imported context"; // This log uses the class log context
	}

};

struct SecondClassWithImportedContext {

	// Define the log context to be used for that class. This overrides any default context which might have previously be set
	LOG_SET_CLASS_CONTEXT(anotherContext);

	void doSomething() {
		log_debug() << "We are doing something. Imported context"; // This log uses the class log context
	}

};

void myFunction() {

	// Redefines the context to use for this scope (this function)
	LOG_DECLARE_DEFAULT_LOCAL_CONTEXT("CXT3", "Function-specific logging context");

	log_info() << "myFunction log 1";
	log_warn() << "myFunction log 2";

}

int generateDataForLogging() {
	static int count = 0;
	printf("generateDataForLogging called %i time(s)\n", ++count);
	return 100;
}


int main(int, const char**) {

	log_debug().writeFormatted("This log is using a format string, similar to the printf syntax. This is an int : %i", 345);
	log_error().writeFormatted("Another way to use the printf variant %i", 7345).writeFormatted(". Done");

	log_error().writeFormatted("This one is mixed. Here is a float : ") << 5.7F;
	log_warn() << 5.7;
	log_warn() << "Test string";

	myFunction();

	myFunction2();

	MySubClass o;
	o.doSomething();
	o.doSomethingElse();

	MyClassWithImportedContext o2;
	o2.doSomething();

	SecondClassWithImportedContext o3;
	o3.doSomething();

	std::string stdString = "That is a std::string";
	log_error().write("Values can be passed at once to the write method. ", stdString, " / " , 1234);

	std::vector<char> charVector;
	for (char i = '0'; i <= '0' + 40; i++)
		charVector.push_back(i);

	log_warn() << "This is a vector of chars : " << charVector;

	MyNamespace::MyFunction();

	log_fatal() << "A fatal log";

	std::vector<MyClass*> vectorOfPointers;
	vectorOfPointers.push_back(new MyClass());
	vectorOfPointers.push_back(new MyClass());

	log_debug() << vectorOfPointers;

	log_warn() << generateDataForLogging();
	log_verbose() << generateDataForLogging();

	log_info() << "A log with std::endl" << std::endl;
	log_info() << "A log with std::ends" << std::ends;
	log_info() << "A log with std::flush" << std::flush;

	static const int DURATION = 1000;

	log_info() << "Waiting " << DURATION << " seconds";

	for(int i = DURATION ; i>0 ; i--) {
		log_info() << i << " seconds before termination";
		sleep(1);
	}

	disableConsoleLogging();
	log_error() << "This log should not visible in the console";

	log_info() << "We are done. Bye";
}