Examples with NamedParam scala.tools.nsc.interpreter.NamedParam used on opensource projects

Example 1 with NamedParam

use of scala.tools.nsc.interpreter.NamedParam in project kylo by Teradata.

the class ScriptEngine method eval.

/**
 * Executes the specified script with the given bindings.
 *
 * @param script   the script to be executed
 * @param bindings the variable bindings to be accessible to the script
 * @return the value returned from the script
 * @throws ScriptException if an error occurs in the script
 */
@Nullable
public synchronized Object eval(@Nonnull final String script, @Nonnull final List<NamedParam> bindings) throws ScriptException {
    // Define class containing script
    final StringBuilder cls = new StringBuilder();
    cls.append("class Script (engine: com.thinkbiganalytics.spark.repl.ScriptEngine)");
    cls.append("    extends com.thinkbiganalytics.spark.repl.Script (engine) {\n");
    cls.append("  override def eval (): Any = {\n");
    cls.append(script);
    cls.append("  }\n");
    // Add bindings to class
    this.values.clear();
    for (NamedParam param : bindings) {
        cls.append("  def ");
        cls.append(param.name());
        cls.append(" (): ");
        cls.append(param.tpe());
        cls.append(" = getValue(\"");
        cls.append(param.name());
        cls.append("\")\n");
        this.values.put(param.name(), param.value());
    }
    cls.append("}\n");
    // Instantiate class
    cls.append("new Script(engine).run()\n");
    // Execute script
    this.out.reset();
    execute(cls.toString());
    // Check for exception and return result
    checkCompileError();
    checkRuntimeError();
    return this.result.get();
}

Example 2 with NamedParam

use of scala.tools.nsc.interpreter.NamedParam in project kylo by Teradata.

the class TransformServiceTest method execute.

/**
 * Verify executing a transformation request.
 */
@Test
@SuppressWarnings("unchecked")
public void execute() throws Exception {
    // Mock data set
    final DataSet dataSet = Mockito.mock(DataSet.class);
    Mockito.when(dataSet.persist(Mockito.any(StorageLevel.class))).thenReturn(dataSet);
    Mockito.when(dataSet.schema()).thenReturn(new StructType());
    // Mock Spark context service
    final SparkContextService sparkContextService = Mockito.mock(SparkContextService.class);
    // Mock Spark script engine
    final SparkScriptEngine engine = Mockito.mock(SparkScriptEngine.class);
    Mockito.when(engine.eval(Mockito.anyString(), Mockito.anyListOf(NamedParam.class))).thenReturn(dataSet);
    Mockito.when(engine.getSparkContext()).thenReturn(Mockito.mock(SparkContext.class));
    // Test executing a request
    final TransformRequest request = new TransformRequest();
    request.setScript("sqlContext.range(1,10)");
    final TransformService service = new TransformService(TransformScript.class, engine, sparkContextService, new MockJobTrackerService());
    final TransformResponse response = service.execute(request);
    Assert.assertEquals(TransformResponse.Status.PENDING, response.getStatus());
    // Test eval arguments
    final ArgumentCaptor<String> evalScript = ArgumentCaptor.forClass(String.class);
    final ArgumentCaptor<List> evalBindings = ArgumentCaptor.forClass(List.class);
    Mockito.verify(engine).eval(evalScript.capture(), evalBindings.capture());
    String expectedScript = null;
    try (InputStream stream = getClass().getResourceAsStream("transform-service-script1.scala")) {
        expectedScript = IOUtils.toString(stream, "UTF-8");
    }
    if (expectedScript == null) {
        throw new Exception("transform-service-script1.scala failed to load");
    }
    Assert.assertEquals(expectedScript, evalScript.getValue());
    final List<NamedParam> bindings = evalBindings.getValue();
    Assert.assertEquals(1, bindings.size());
    Assert.assertEquals("sparkContextService", bindings.get(0).name());
    Assert.assertEquals("com.thinkbiganalytics.spark.SparkContextService", bindings.get(0).tpe());
    Assert.assertEquals(sparkContextService, bindings.get(0).value());
}

Example 3 with NamedParam

use of scala.tools.nsc.interpreter.NamedParam in project kylo by Teradata.

the class TransformServiceTest method executeWithDatasourceProviderFactory.

/**
 * Verify executing a transformation request with a data source provider factory.
 */
@Test
@SuppressWarnings("unchecked")
public void executeWithDatasourceProviderFactory() throws Exception {
    // Mock data set
    final DataSet dataSet = Mockito.mock(DataSet.class);
    Mockito.when(dataSet.persist(Mockito.any(StorageLevel.class))).thenReturn(dataSet);
    Mockito.when(dataSet.schema()).thenReturn(new StructType());
    // Mock Spark context service
    final SparkContextService sparkContextService = Mockito.mock(SparkContextService.class);
    // Mock Spark script engine
    final SparkScriptEngine engine = Mockito.mock(SparkScriptEngine.class);
    Mockito.when(engine.eval(Mockito.anyString(), Mockito.anyListOf(NamedParam.class))).thenReturn(dataSet);
    Mockito.when(engine.getSparkContext()).thenReturn(Mockito.mock(SparkContext.class));
    // Mock data source provider factory
    final DatasourceProvider datasourceProvider = Mockito.mock(DatasourceProvider.class);
    final DatasourceProviderFactory datasourceProviderFactory = Mockito.mock(DatasourceProviderFactory.class);
    Mockito.when(datasourceProviderFactory.getDatasourceProvider(Mockito.anyCollectionOf(Datasource.class))).thenReturn(datasourceProvider);
    // Mock profiler
    final Profiler profiler = Mockito.mock(Profiler.class);
    // Test executing a request
    final TransformRequest request = new TransformRequest();
    request.setDatasources(Collections.singletonList(Mockito.mock(Datasource.class)));
    request.setScript("sqlContext.range(1,10)");
    final TransformService service = new TransformService(TransformScript.class, engine, sparkContextService, new MockJobTrackerService());
    service.setDatasourceProviderFactory(datasourceProviderFactory);
    service.setProfiler(profiler);
    final TransformResponse response = service.execute(request);
    Assert.assertEquals(TransformResponse.Status.PENDING, response.getStatus());
    // Test eval arguments
    final ArgumentCaptor<String> evalScript = ArgumentCaptor.forClass(String.class);
    final ArgumentCaptor<List> evalBindings = ArgumentCaptor.forClass(List.class);
    Mockito.verify(engine).eval(evalScript.capture(), evalBindings.capture());
    InputStream inputStream = getClass().getResourceAsStream("transform-service-script1.scala");
    final String expectedScript = IOUtils.toString(inputStream, "UTF-8");
    inputStream.close();
    Assert.assertEquals(expectedScript, evalScript.getValue());
    final List<NamedParam> bindings = evalBindings.getValue();
    Assert.assertEquals(2, bindings.size());
    Assert.assertEquals("sparkContextService", bindings.get(0).name());
    Assert.assertEquals("com.thinkbiganalytics.spark.SparkContextService", bindings.get(0).tpe());
    Assert.assertEquals(sparkContextService, bindings.get(0).value());
    Assert.assertEquals("datasourceProvider", bindings.get(1).name());
    Assert.assertEquals("com.thinkbiganalytics.spark.shell.DatasourceProvider[org.apache.spark.sql.DataFrame]", bindings.get(1).tpe());
    Assert.assertEquals(datasourceProvider, bindings.get(1).value());
}

Example 4 with NamedParam

use of scala.tools.nsc.interpreter.NamedParam in project kylo by Teradata.

the class App method main.

/**
 * Evaluates a Scala file.
 *
 * @param args the command-line arguments
 * @throws Exception if an error occurs
 */
public static void main(@Nonnull String[] args) throws Exception {
    // Verify arguments
    if (args.length != 1) {
        System.err.println("error: usage: SparkShellApp file");
        System.exit(1);
    }
    // Load environment
    final ApplicationContext ctx = new AnnotationConfigApplicationContext("com.thinkbiganalytics.spark");
    File scriptFile = new File(args[0]);
    if (scriptFile.exists() && scriptFile.isFile()) {
        log.info("Loading script file at {} ", args[0]);
    } else {
        log.info("Couldn't find script file at {} will check classpath.", args[0]);
        String fileName = scriptFile.getName();
        scriptFile = new File("./" + fileName);
    }
    final String script = Files.toString(scriptFile, Charsets.UTF_8);
    // Prepare bindings
    final List<NamedParam> bindings = new ArrayList<>();
    final DatasourceProvider datasourceProvider = ctx.getBean(DatasourceProvider.class);
    bindings.add(new NamedParamClass("datasourceProvider", datasourceProvider.getClass().getName(), datasourceProvider));
    // Execute script
    final SparkScriptEngine engine = ctx.getBean(SparkScriptEngine.class);
    engine.eval(script, bindings);
}

Example 5 with NamedParam

use of scala.tools.nsc.interpreter.NamedParam in project kylo by Teradata.

the class TransformService method createShellTask.

/**
 * Creates a new Spark shell transformation.
 */
@Nonnull
private DataSet createShellTask(@Nonnull final TransformRequest request) throws ScriptException {
    log.entry(request);
    // Build bindings list
    final List<NamedParam> bindings = new ArrayList<>();
    bindings.add(new NamedParamClass("sparkContextService", SparkContextService.class.getName(), sparkContextService));
    if (request.getDatasources() != null && !request.getDatasources().isEmpty()) {
        if (datasourceProviderFactory != null) {
            final DatasourceProvider datasourceProvider = datasourceProviderFactory.getDatasourceProvider(request.getDatasources());
            bindings.add(new NamedParamClass("datasourceProvider", DatasourceProvider.class.getName() + "[org.apache.spark.sql.DataFrame]", datasourceProvider));
        } else {
            throw log.throwing(new ScriptException("Script cannot be executed because no data source provider factory is available."));
        }
    }
    // Ensure SessionState is valid
    if (SessionState.get() == null && sessionState != null) {
        SessionState.setCurrentSessionState(sessionState);
    }
    // Execute script
    final Object result;
    try {
        result = this.engine.eval(toScript(request), bindings);
    } catch (final Exception cause) {
        throw log.throwing(new ScriptException(cause));
    }
    if (result instanceof DataSet) {
        return log.exit((DataSet) result);
    } else {
        throw log.throwing(new IllegalStateException("Unexpected script result type: " + (result != null ? result.getClass() : null)));
    }
}