Added benchmarks for batchUpdate

For #382 - added benchmarks for RPM batchUpdate
metadata generator.

PR: #383

.gitignore

@@ -6,3 +6,4 @@ target/
 .classpath
 .project
 src/test/resources-binary/rpms/**
+.factorypath

README.md

@@ -122,3 +122,13 @@ $ mvn clean install -Pqulice
 ```
 
 To avoid build errors use Maven 3.2+.
+
+## Benchmarking
+
+To run benchmarks:
+ 1. Build `rpm-adapter` with `bench` Maven profile enabled: `mvn package -Pbench`
+ 2. Copy dependencies to `target/` dir: `mvn dependency:copy-dependencies`
+ 3. Create directory for tests and copy test resources to this directory; RPM bundles available:
+  - https://artipie.s3.amazonaws.com/rpm-test/bundle100.tar.gz
+  - https://artipie.s3.amazonaws.com/rpm-test/bundle1000.tar.gz
+ 4. Run benchmarks with `env BENCH_DIR=/tmp/rpm-test java -cp "target/benchmarks.jar:target/classes/*:target/dependency/*" org.openjdk.jmh.Main RpmBench`, where `/tmp/rpm-test` is a directory with RPM packages for tests.

pom.xml

@@ -35,6 +35,9 @@ SOFTWARE.
   <description>Turns your files/objects into RPM artifacts</description>
   <url>https://github.com/artipie/rpm-adapter</url>
   <inceptionYear>2019</inceptionYear>
+  <properties>
+    <jmh.version>1.29</jmh.version>
+  </properties>
   <licenses>
     <license>
       <name>MIT</name>
@@ -212,6 +215,16 @@ SOFTWARE.
       <version>1.7.30</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.openjdk.jmh</groupId>
+      <artifactId>jmh-core</artifactId>
+      <version>${jmh.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.openjdk.jmh</groupId>
+      <artifactId>jmh-generator-annprocess</artifactId>
+      <version>${jmh.version}</version>
+    </dependency>
   </dependencies>
   <build>
     <testResources>
@@ -320,6 +333,9 @@ SOFTWARE.
                   </limits>
                 </rule>
               </rules>
+              <excludes>
+                <exclude>com/artipie/rpm/benchmarks/**/*</exclude>
+              </excludes>
             </configuration>
           </execution>
           <execution>
@@ -387,5 +403,64 @@ SOFTWARE.
         </plugins>
       </build>
     </profile>
+    <profile>
+      <id>bench</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-shade-plugin</artifactId>
+            <version>3.2.0</version>
+            <executions>
+              <execution>
+                <phase>package</phase>
+                <goals>
+                  <goal>shade</goal>
+                </goals>
+                <configuration>
+                  <finalName>benchmarks</finalName>
+                  <transformers>
+                    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                      <mainClass>org.openjdk.jmh.Main</mainClass>
+                    </transformer>
+                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                  </transformers>
+                  <filters>
+                    <filter>
+                      <!--
+                          Shading signed JARs will fail without this.
+                          http://stackoverflow.com/questions/999489/invalid-signature-file-when-attempting-to-run-a-jar
+                      -->
+                      <artifact>*:*</artifact>
+                      <excludes>
+                        <exclude>META-INF/*.SF</exclude>
+                        <exclude>META-INF/*.DSA</exclude>
+                        <exclude>META-INF/*.RSA</exclude>
+                      </excludes>
+                    </filter>
+                  </filters>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-dependency-plugin</artifactId>
+            <executions>
+              <execution>
+                <id>copy-dependencies</id>
+                <phase>package</phase>
+                <goals>
+                  <goal>copy-dependencies</goal>
+                </goals>
+              </execution>
+            </executions>
+            <configuration>
+              <includeScope>runtime</includeScope>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
   </profiles>
 </project>

src/main/java/com/artipie/rpm/benchmarks/RpmBench.java

@@ -0,0 +1,83 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 artipie.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.artipie.rpm.benchmarks;
+
+import com.artipie.asto.Key;
+import com.artipie.asto.Storage;
+import com.artipie.asto.fs.FileStorage;
+import com.artipie.rpm.Rpm;
+import hu.akarnokd.rxjava2.interop.CompletableInterop;
+import java.nio.file.Paths;
+import java.util.concurrent.TimeUnit;
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.BenchmarkMode;
+import org.openjdk.jmh.annotations.Measurement;
+import org.openjdk.jmh.annotations.Mode;
+import org.openjdk.jmh.annotations.OutputTimeUnit;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.Setup;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+import org.openjdk.jmh.infra.Blackhole;
+
+/**
+ * Benchmark for {@link RPM}.
+ * @since 1.4
+ * @checkstyle MagicNumberCheck (500 lines)
+ * @checkstyle DesignForExtensionCheck (500 lines)
+ * @checkstyle JavadocMethodCheck (500 lines)
+ */
+@BenchmarkMode(Mode.AverageTime)
+@OutputTimeUnit(TimeUnit.MILLISECONDS)
+@State(Scope.Benchmark)
+@Warmup(iterations = 5)
+@Measurement(iterations = 50)
+public class RpmBench {
+
+    /**
+     * Benchmark directory.
+     */
+    private static final String BENCH_DIR = System.getenv("BENCH_DIR");
+
+    /**
+     * Repository storage.
+     */
+    private Storage storage;
+
+    @Setup
+    public void setup() {
+        if (RpmBench.BENCH_DIR == null) {
+            throw new IllegalStateException("BENCH_DIR environment variable must be set");
+        }
+        this.storage = new FileStorage(Paths.get(RpmBench.BENCH_DIR));
+    }
+
+    @Benchmark
+    public void run(final Blackhole bhl) {
+        new Rpm(this.storage).batchUpdate(Key.ROOT)
+            .to(CompletableInterop.await())
+            .toCompletableFuture().join();
+    }
+}

src/main/java/com/artipie/rpm/benchmarks/package-info.java

@@ -0,0 +1,29 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 artipie.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/**
+ * RPM benchmarks.
+ * @since 1.4
+ */
+package com.artipie.rpm.benchmarks;