Examples with FileWriter java.io.FileWriter used on opensource projects

Example 21 with FileWriter

use of java.io.FileWriter in project hadoop by apache.

the class TestConfiguration method testVariableSubstitution.

public void testVariableSubstitution() throws IOException {
    // stubbing only environment dependent functions
    Configuration mock = Mockito.spy(conf);
    Mockito.when(mock.getProperty("user.name")).thenReturn("hadoop_user");
    Mockito.when(mock.getenv("FILE_NAME")).thenReturn("hello");
    out = new BufferedWriter(new FileWriter(CONFIG));
    startConfig();
    declareProperty("my.int", "${intvar}", "42");
    declareProperty("intvar", "42", "42");
    declareProperty("my.base", "/tmp/${user.name}", "/tmp/hadoop_user");
    declareProperty("my.file", "${env.FILE_NAME}", "hello");
    declareProperty("my.suffix", ".txt", ".txt");
    declareProperty("my.relfile", "${my.file}${my.suffix}", "hello.txt");
    declareProperty("my.fullfile", "${my.base}/${my.file}${my.suffix}", "/tmp/hadoop_user/hello.txt");
    // check that undefined variables are returned as-is
    declareProperty("my.failsexpand", "a${my.undefvar}b", "a${my.undefvar}b");
    // check that multiple variable references are resolved
    declareProperty("my.user.group", "${user.name} ${user.name}", "hadoop_user hadoop_user");
    endConfig();
    Path fileResource = new Path(CONFIG);
    mock.addResource(fileResource);
    for (Prop p : props) {
        System.out.println("p=" + p.name);
        String gotVal = mock.get(p.name);
        String gotRawVal = mock.getRaw(p.name);
        assertEq(p.val, gotRawVal);
        assertEq(p.expectEval, gotVal);
    }
    // check that expansion also occurs for getInt()
    assertTrue(mock.getInt("intvar", -1) == 42);
    assertTrue(mock.getInt("my.int", -1) == 42);
}

Example 22 with FileWriter

use of java.io.FileWriter in project hadoop by apache.

the class TestConfiguration method testToString.

public void testToString() throws IOException {
    out = new BufferedWriter(new FileWriter(CONFIG));
    startConfig();
    endConfig();
    Path fileResource = new Path(CONFIG);
    conf.addResource(fileResource);
    String expectedOutput = "Configuration: core-default.xml, core-site.xml, " + fileResource.toString();
    assertEquals(expectedOutput, conf.toString());
}

Example 23 with FileWriter

use of java.io.FileWriter in project hadoop by apache.

the class TestConfiguration method testDumpConfiguration.

public void testDumpConfiguration() throws IOException {
    StringWriter outWriter = new StringWriter();
    Configuration.dumpConfiguration(conf, outWriter);
    String jsonStr = outWriter.toString();
    ObjectMapper mapper = new ObjectMapper();
    JsonConfiguration jconf = mapper.readValue(jsonStr, JsonConfiguration.class);
    int defaultLength = jconf.getProperties().length;
    // add 3 keys to the existing configuration properties
    out = new BufferedWriter(new FileWriter(CONFIG));
    startConfig();
    appendProperty("test.key1", "value1");
    appendProperty("test.key2", "value2", true);
    appendProperty("test.key3", "value3");
    endConfig();
    Path fileResource = new Path(CONFIG);
    conf.addResource(fileResource);
    out.close();
    outWriter = new StringWriter();
    Configuration.dumpConfiguration(conf, outWriter);
    jsonStr = outWriter.toString();
    mapper = new ObjectMapper();
    jconf = mapper.readValue(jsonStr, JsonConfiguration.class);
    int length = jconf.getProperties().length;
    // check for consistency in the number of properties parsed in Json format.
    assertEquals(length, defaultLength + 3);
    //change few keys in another resource file
    out = new BufferedWriter(new FileWriter(CONFIG2));
    startConfig();
    appendProperty("test.key1", "newValue1");
    appendProperty("test.key2", "newValue2");
    endConfig();
    Path fileResource1 = new Path(CONFIG2);
    conf.addResource(fileResource1);
    out.close();
    outWriter = new StringWriter();
    Configuration.dumpConfiguration(conf, outWriter);
    jsonStr = outWriter.toString();
    mapper = new ObjectMapper();
    jconf = mapper.readValue(jsonStr, JsonConfiguration.class);
    // put the keys and their corresponding attributes into a hashmap for their 
    // efficient retrieval
    HashMap<String, JsonProperty> confDump = new HashMap<String, JsonProperty>();
    for (JsonProperty prop : jconf.getProperties()) {
        confDump.put(prop.getKey(), prop);
    }
    // check if the value and resource of test.key1 is changed
    assertEquals("newValue1", confDump.get("test.key1").getValue());
    assertEquals(false, confDump.get("test.key1").getIsFinal());
    assertEquals(fileResource1.toString(), confDump.get("test.key1").getResource());
    // check if final parameter test.key2 is not changed, since it is first 
    // loaded as final parameter
    assertEquals("value2", confDump.get("test.key2").getValue());
    assertEquals(true, confDump.get("test.key2").getIsFinal());
    assertEquals(fileResource.toString(), confDump.get("test.key2").getResource());
    // check for other keys which are not modified later
    assertEquals("value3", confDump.get("test.key3").getValue());
    assertEquals(false, confDump.get("test.key3").getIsFinal());
    assertEquals(fileResource.toString(), confDump.get("test.key3").getResource());
    // check for resource to be "Unknown" for keys which are loaded using 'set' 
    // and expansion of properties
    conf.set("test.key4", "value4");
    conf.set("test.key5", "value5");
    conf.set("test.key6", "${test.key5}");
    outWriter = new StringWriter();
    Configuration.dumpConfiguration(conf, outWriter);
    jsonStr = outWriter.toString();
    mapper = new ObjectMapper();
    jconf = mapper.readValue(jsonStr, JsonConfiguration.class);
    confDump = new HashMap<String, JsonProperty>();
    for (JsonProperty prop : jconf.getProperties()) {
        confDump.put(prop.getKey(), prop);
    }
    assertEquals("value5", confDump.get("test.key6").getValue());
    assertEquals("programmatically", confDump.get("test.key4").getResource());
    outWriter.close();
}

Example 24 with FileWriter

use of java.io.FileWriter in project hadoop by apache.

the class TestConfiguration method testIncludes.

public void testIncludes() throws Exception {
    tearDown();
    System.out.println("XXX testIncludes");
    out = new BufferedWriter(new FileWriter(CONFIG2));
    startConfig();
    appendProperty("a", "b");
    appendProperty("c", "d");
    endConfig();
    out = new BufferedWriter(new FileWriter(CONFIG));
    startConfig();
    addInclude(CONFIG2);
    appendProperty("e", "f");
    appendProperty("g", "h");
    endConfig();
    // verify that the includes file contains all properties
    Path fileResource = new Path(CONFIG);
    conf.addResource(fileResource);
    assertEquals(conf.get("a"), "b");
    assertEquals(conf.get("c"), "d");
    assertEquals(conf.get("e"), "f");
    assertEquals(conf.get("g"), "h");
    tearDown();
}

Example 25 with FileWriter

use of java.io.FileWriter in project hadoop by apache.

the class TestConfiguration method testGetClass.

public void testGetClass() throws IOException {
    out = new BufferedWriter(new FileWriter(CONFIG));
    startConfig();
    appendProperty("test.class1", "java.lang.Integer");
    appendProperty("test.class2", " java.lang.Integer ");
    endConfig();
    Path fileResource = new Path(CONFIG);
    conf.addResource(fileResource);
    assertEquals("java.lang.Integer", conf.getClass("test.class1", null).getCanonicalName());
    assertEquals("java.lang.Integer", conf.getClass("test.class2", null).getCanonicalName());
}