Sample_testCategory.cpp - Log for C++翻訳 Wiki - Log for C++翻訳

サンプル2 testCategory.cpp

　log4cpp::Categoryの使い方です。 1つのカテゴリに複数のアペンダーを設定したり、１つも設定されていないときにどうなるか？など。

ファイルの中身

testCategory.cpp

 #include <stdio.h>
 #include <iostream>
 #include <log4cpp/Category.hh>
 #include <log4cpp/Appender.hh>
 #include <log4cpp/OstreamAppender.hh>
 #include <log4cpp/Layout.hh>
 #include <log4cpp/BasicLayout.hh>
 #include <log4cpp/Priority.hh>
 #include <log4cpp/NDC.hh>
 
 
 void testLogva(log4cpp::Category& category,
                log4cpp::Priority::Value priority, 
                const char* stringFormat,
                ...)
 {
     va_list va;
     va_start(va, stringFormat);
     category.logva(priority, stringFormat, va);
     va_end(va);
 } /* end testLogva */
 
 void testGetAppender(log4cpp::Category& category,
                      log4cpp::Appender* appender,
                      log4cpp::Appender* appender2,
                      log4cpp::Appender& appender3)
 {
     // test getAppender() - should return one of the three appenders
     log4cpp::Appender *tmpAppender = category.getAppender();
     if ((tmpAppender == appender) ||
         (tmpAppender == appender2) ||
         (tmpAppender == &appender3))
     {
         std::cout << "tmpAppender == appender or appender2 or appender3" << std::endl;
     }
     else
     {
         std::cout << "tmpAppender != appender or appender2 or appender3" << std::endl;
     } /* end if-else */
 
     // test getAppender(const std::string& name) const
     tmpAppender = category.getAppender("appender2");
     if (tmpAppender == appender2)
     {
         std::cout << "tmpAppender == appender2" << std::endl;
     }
     else
     {
         std::cout << "tmpAppender != appender2" << std::endl;
     } /* end if-else */
 
     tmpAppender = category.getAppender("appender3");
     if (tmpAppender == &appender3)
     {
         std::cout << "tmpAppender == appender3" << std::endl;
     }
     else
     {
         std::cout << "tmpAppender != appender3" << std::endl;
     } /* end if-else */
 
 } /* end testGetAppender() */
 
 void testMultiAppenders()
 {
     log4cpp::Appender* appender = 
         new log4cpp::OstreamAppender("appender", &std::cout);
     
     log4cpp::Appender* appender2 = 
         new log4cpp::OstreamAppender("appender2", &std::cout);
 
     log4cpp::OstreamAppender appender3("appender3", &std::cout);
 
     log4cpp::Layout* layout = new log4cpp::BasicLayout();
     log4cpp::Layout* layout2 = new log4cpp::BasicLayout();
     log4cpp::Layout* layout3 = new log4cpp::BasicLayout();
 
     appender->setLayout(layout);
     appender2->setLayout(layout2);
     appender3.setLayout(layout3);
 
     // add three appenders to root category
     log4cpp::Category& root = log4cpp::Category::getRoot();
     root.setPriority(log4cpp::Priority::ERROR);
 
     // clear root's initial appender
     root.removeAllAppenders();
 
     root.addAppender(appender);
     root.addAppender(appender2);
     root.addAppender(appender3);
 
     // dump a message - should see three on the screen
     std::cout << "You should see three lines of \"root error #1\"" << std::endl;
     root.error("root error #1");
     std::cout << "Did you?" << std::endl;
 
     // get getAppender() changes on category with appenders
     std::cout << "You should see messages that tmpAppender == other appenders" << std::endl;
     testGetAppender(root, appender, appender2, appender3);
     std::cout << "Did you?" << std::endl;
 
     // add appender by reference to sub1 category
     log4cpp::Category& sub1 = 
         log4cpp::Category::getInstance(std::string("sub1"));
     sub1.addAppender(appender3);
 
     // clear all appenders
     root.removeAllAppenders();
     sub1.removeAllAppenders();
 
     // dump a message - should not see it on the screen
     std::cout << "You should not see any lines of  \"root error #2\"" << std::endl;
     root.error("root error #2");
     std::cout << "Did you?" << std::endl;
 
     // get getAppender() changes on category with no appenders
     std::cout << "You should see messages that tmpAppender != other appenders" << std::endl;
     testGetAppender(root, appender, appender2, appender3);
     std::cout << "Did you?" << std::endl;
 
 
     // add three appenders to root category
     appender = new log4cpp::OstreamAppender("appender", &std::cout);
     appender2 = new log4cpp::OstreamAppender("appender2", &std::cout);
     root.addAppender(appender);
     root.addAppender(appender2);
     root.addAppender(appender3);
 
     // test removing valid and invalid
     root.removeAppender(appender);
     root.removeAppender(appender2);
     root.removeAppender(&appender3);
 
 } /* end testMultiAppenders() */
 
 
 int main(int argc, char** argv) {    
 
     testMultiAppenders();
 
     log4cpp::Appender* appender = 
         new log4cpp::OstreamAppender("default", &std::cout);
 
     log4cpp::Appender* appender2 = 
         new log4cpp::OstreamAppender("default2", &std::cout);
 
     log4cpp::Layout* layout = new log4cpp::BasicLayout();
     log4cpp::Layout* layout2 = new log4cpp::BasicLayout();
     
     appender->setLayout(layout);
     appender2->setLayout(layout2);
 
     log4cpp::Category& root = log4cpp::Category::getRoot();
     root.addAppender(appender);
     root.setPriority(log4cpp::Priority::ERROR);
     
     log4cpp::Category& sub1 = 
         log4cpp::Category::getInstance(std::string("sub1"));
         sub1.addAppender(appender2);
         sub1.setAdditivity(false);
 
     log4cpp::Category& sub2 = 
         log4cpp::Category::getInstance(std::string("sub1.sub2"));
 
     std::cout << " root priority = " << root.getPriority() << std::endl;
     std::cout << " sub1 priority = " << sub1.getPriority() << std::endl;
     std::cout << " sub2 priority = " << sub2.getPriority() << std::endl;
     
     root.error("root error");
     root.warn("root warn");
     sub1.error("sub1 error");
     sub1.warn("sub1 warn");
     sub2.error("sub2 error");
     sub2.warn("sub2 warn");
     
     testLogva(root, log4cpp::Priority::EMERG, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::ALERT, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::CRIT, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::ERROR, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::WARN, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::INFO, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::NOTICE, "This contains %d %s", 2, "variable arguments");
     testLogva(root, log4cpp::Priority::DEBUG, "This contains %d %s", 2, "variable arguments");
 
     sub1.setPriority(log4cpp::Priority::INFO);
     std::cout << " root priority = " << root.getPriority() << std::endl;
     std::cout << " sub1 priority = " << sub1.getPriority() << std::endl;
     std::cout << " sub2 priority = " << sub2.getPriority() << std::endl;
    
     std::cout << "priority info" << std::endl;
     root.error("root error");
     root.warn("root warn");
     sub1.error("sub1 error");
     sub1.warn("sub1 warn");
     sub2.error("sub2 error");
     sub2.warn("sub2 warn");
     sub2.error("%s %s %d", "test", "vform", 123);
     sub2.warnStream() << "streamed warn";
 
     sub2 << log4cpp::Priority::WARN << "warn2.." << "..warn3..value=" << 0 
          << log4cpp::eol << "..warn4";
 
     log4cpp::Category::shutdown();
 
     return 0;
 }

実行結果例

　testCategory.cppをビルドし、実行した結果です。なお、実行環境はLinux(Ubuntu 11.0)です。

stdout(標準出力):

You should see three lines of "root error #1"
1336819058 ERROR  : root error #1
1336819058 ERROR  : root error #1
1336819058 ERROR  : root error #1
Did you?
You should see messages that tmpAppender == other appenders
tmpAppender == appender or appender2 or appender3
tmpAppender == appender2
tmpAppender == appender3
Did you?
You should not see any lines of  "root error #2"
Did you?
You should see messages that tmpAppender != other appenders
tmpAppender != appender or appender2 or appender3
tmpAppender != appender2
tmpAppender != appender3
Did you?
 root priority = 300
 sub1 priority = 800
 sub2 priority = 800
1336819058 ERROR  : root error
1336819058 ERROR sub1 : sub1 error
1336819058 ERROR sub1.sub2 : sub2 error
1336819058 FATAL  : This contains 2 variable arguments
1336819058 ALERT  : This contains 2 variable arguments
1336819058 CRIT  : This contains 2 variable arguments
1336819058 ERROR  : This contains 2 variable arguments
 root priority = 300
 sub1 priority = 600
 sub2 priority = 800
priority info
1336819058 ERROR  : root error
1336819058 ERROR sub1 : sub1 error
1336819058 WARN sub1 : sub1 warn
1336819058 ERROR sub1.sub2 : sub2 error
1336819058 WARN sub1.sub2 : sub2 warn
1336819058 ERROR sub1.sub2 : test vform 123
1336819058 WARN sub1.sub2 : streamed warn
1336819058 WARN sub1.sub2 : warn2....warn3..value=0
1336819058 WARN sub1.sub2 : ..warn4

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最近の更新 (Recent Changes)

2012-09-11

2012-05-13

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サンプル2 testCategory.cpp

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