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Diffstat (limited to 'reference/logging-slf4j-demo/src/test/java/org/onap/logging/ref/slf4j/CallGraphTest.java')
| -rw-r--r-- | reference/logging-slf4j-demo/src/test/java/org/onap/logging/ref/slf4j/CallGraphTest.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/reference/logging-slf4j-demo/src/test/java/org/onap/logging/ref/slf4j/CallGraphTest.java b/reference/logging-slf4j-demo/src/test/java/org/onap/logging/ref/slf4j/CallGraphTest.java new file mode 100644 index 0000000..3d123e0 --- /dev/null +++ b/reference/logging-slf4j-demo/src/test/java/org/onap/logging/ref/slf4j/CallGraphTest.java @@ -0,0 +1,207 @@ +/** + * ============LICENSE_START======================================================= + * org.onap.logging + * ================================================================================ + * Copyright © 2018 Amdocs + * All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.logging.ref.slf4j; + +import java.io.BufferedReader; +import java.io.File; +import java.io.FileReader; +import java.nio.file.Files; + +import javax.servlet.http.HttpServletRequest; + +import org.onap.logging.ref.slf4j.analysis.CallGraphAnalyzer; +import org.onap.logging.ref.slf4j.analysis.CallGraphReportWriter; +import org.onap.logging.ref.slf4j.analysis.LogEntry; +import org.onap.logging.ref.slf4j.demo.bean.Request; +import org.onap.logging.ref.slf4j.demo.bean.Response; +import org.onap.logging.ref.slf4j.demo.component.AbstractComponentTest; +import org.onap.logging.ref.slf4j.demo.component.alpha.ComponentAlpha; +import org.slf4j.LoggerFactory; +import org.springframework.mock.web.MockHttpServletRequest; +import org.testng.Assert; +import org.testng.annotations.AfterSuite; +import org.testng.annotations.BeforeSuite; +import org.testng.annotations.Test; + +import static org.hamcrest.MatcherAssert.assertThat; +import static org.hamcrest.core.Is.is; + +/** + * Simple verification that we can easily get a call graph out of + * some calls to logging via <tt>ONAPLogAdapter</tt>. + */ +public class CallGraphTest { + + /** Temporary directory into which logfiles are written. */ + private static File sDir; + + @BeforeSuite + public static void setUp() throws Exception { + AbstractComponentTest.setInProcess(); + sDir = Files.createTempDirectory(CallGraphTest.class.getName()).toFile(); + System.getProperties().setProperty("SLF4J_OUTPUT_DIRECTORY", sDir.getAbsolutePath()); + LoggerFactory.getLogger(CallGraphTest.class).info("Starting."); + } + + @AfterSuite + public static void tearDown() throws Exception { + LoggerFactory.getLogger(CallGraphTest.class).info("Ending."); + Thread.sleep(1000L); + if (sDir != null) { + System.err.println("Should be deleting [" + sDir.getAbsolutePath() + "]..."); + } + } + + @Test(enabled = false) + public void testSimple() throws Exception { + + final HttpServletRequest mock = new MockHttpServletRequest(); + final ComponentAlpha a = new ComponentAlpha(); + final Request request = new Request(); + final Response response = a.execute(request, mock); + assertThat(response.getResponses().size(), is(0)); + } + + /** + * A more complex (interesting) example of generating a call graph. + * @throws Exception test failure. + */ + @Test + public void testComplex() throws Exception { + + Assert.assertNotNull(sDir); + + // Fan out some requests between test components. + + final Request a = new Request(); + a.setService("alpha"); + + final Request b = new Request(); + b.setService("beta"); + + final Request ac = new Request(); + ac.setService("gamma"); + + final Request ad = new Request(); + ad.setService("delta"); + + final Request bc1 = new Request(); + bc1.setService("gamma"); + + final Request bc2 = new Request(); + bc2.setService("gamma"); + + a.getRequests().add(b); + a.getRequests().add(ac); + a.getRequests().add(ad); + b.getRequests().add(bc1); + b.getRequests().add(bc2); + + // Deeper. + + final Request xb = new Request(); + xb.setService("beta"); + + final Request xg = new Request(); + xg.setService("gamma"); + + final Request xd = new Request(); + xd.setService("delta"); + + a.getRequests().add(xb); + xb.getRequests().add(xg); + xg.getRequests().add(xd); + + // Execute. + + final HttpServletRequest mock = new MockHttpServletRequest(); + final ComponentAlpha component = new ComponentAlpha(); + final Response response = component.execute(a, mock); + System.err.println(response); + + assertThat(response.getResponses().size(), is(4)); + + Thread.sleep(1000L); + + // Find logfile. + + File log = null; + for (final File candidate : sDir.listFiles()) { + if (candidate.getName().endsWith(".log")) { + log = candidate; + break; + } + } + + Assert.assertNotNull(log); + + System.err.println("READING LOGFILE: " + log.getAbsolutePath()); + + final CallGraphAnalyzer analyzer = new CallGraphAnalyzer(); + try (final BufferedReader reader = new BufferedReader(new FileReader(log))) { + while (true) { + + final String line = reader.readLine(); + if (line == null) { + break; + } + + final LogEntry entry = new LogEntry(line); + analyzer.add(entry); + } + } + + // + // Debug during dev, but annoying the rest of the time. + // + // System.err.println("--------------------------------------------------"); + // for (final LogEntry e : analyzer.getEntries()) { + // System.err.println(e.toShortString()); + // } + // System.err.println("--------------------------------------------------"); + + final CallGraphReportWriter writer = new CallGraphReportWriter(analyzer); + final String shortReport = writer.getShortReport(); + final String longReport = writer.getLongReport(); + + // Dump long report. + + System.out.println("----\nGraph:\n\n" + longReport + "\n----"); + + // Validate short report. + + assertThat("Alpha\n" + + " Beta\n" + + " Gamma\n" + + " Gamma\n" + + " Gamma\n" + + " Delta\n" + + " Beta\n" + + " Gamma\n" + + " Delta\n", + is(shortReport)); + + // Ensure output reaches System.xxx. + + Thread.sleep(1000L); + } +}
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