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10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
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23 
24 /*
25  * @test
26  * @bug     6985460
27  * @summary Test the source class name and method output by the platform
28  *          logger.
29  *
30  * @modules java.base/sun.util.logging
31  *          java.logging
32  * @compile -XDignore.symbol.file SourceClassName.java
33  * @run main/othervm SourceClassName
34  */
35 
36 import java.util.logging.*;
37 import java.io.*;
38 import sun.util.logging.PlatformLogger;
39 
40 public class SourceClassName {
main(String[] args)41     public static void main(String[] args) throws Exception {
42         File dir = new File(System.getProperty("user.dir", "."));
43         File log = new File(dir, "testlog.txt");
44         PrintStream logps = new PrintStream(log);
45         writeLogRecords(logps);
46         checkLogRecords(log);
47     }
48 
writeLogRecords(PrintStream logps)49     private static void writeLogRecords(PrintStream logps) throws Exception {
50         PrintStream err = System.err;
51         try {
52             System.setErr(logps);
53 
54             Object[] params = new Object[] { new Long(1), "string"};
55             PlatformLogger plog = PlatformLogger.getLogger("test.log.foo");
56             plog.severe("Log message {0} {1}", (Object[]) params);
57 
58             // create a java.util.logging.Logger
59             // now java.util.logging.Logger should be created for each platform
60             // logger
61             Logger logger = Logger.getLogger("test.log.bar");
62             logger.log(Level.SEVERE, "Log message {0} {1}", params);
63 
64             plog.severe("Log message {0} {1}", (Object[]) params);
65         } finally {
66             logps.flush();
67             logps.close();
68             System.setErr(err);
69         }
70     }
71 
checkLogRecords(File log)72     private static void checkLogRecords(File log) throws Exception {
73         System.out.println("Checking log records in file: " + log);
74         FileInputStream in = new FileInputStream(log);
75         String EXPECTED_LOG = "SEVERE: Log message 1 string";
76         try {
77             BufferedReader reader = new BufferedReader(new InputStreamReader(in));
78             String line;
79             String[] record = new String[2];
80             int count = 0;
81             int i = 0;
82             while ((line = reader.readLine()) != null) {
83                 line = line.trim();
84                 System.out.println(line);
85                 record[i++] = line;
86                 if (i == 2) {
87                     i = 0;
88                     // check log message
89                     if (!record[1].equals(EXPECTED_LOG)) {
90                         // it can sometime happen that some static initializer
91                         // in the system will log an error message - due to e.g.
92                         // some kind of misconfiguration or system settings.
93                         // For instance - somethink like:
94                         //   INFO: currency.properties entry for FR ignored
95                         //         because the value format is not recognized.
96                         // instead of failing if we get such an unexpected
97                         // message, we will simply print that out.
98                         System.out.println("*** WARNING: Unexpected log: " + record[1]);
99                         continue;
100                     }
101                     count++;
102                     // check source class name and method
103                     String[] ss = record[0].split("\\s+");
104                     int len = ss.length;
105                     if (!ss[len-2].equals("SourceClassName") ||
106                         !ss[len-1].equals("writeLogRecords")) {
107                         throw new RuntimeException("Unexpected source: " +
108                             ss[len-2] + " " + ss[len-1]);
109                     }
110 
111                 }
112             }
113             if (count != 3) {
114                 throw new RuntimeException("Unexpected number of records: " + count);
115             }
116         } finally {
117             in.close();
118         }
119     }
120 }
121