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Posted to commits@sling.apache.org by kw...@apache.org on 2023/12/05 20:08:49 UTC

(sling-org-apache-sling-providertype-bnd-plugin) 01/01: SLING-12181 Evaluate provider type from annotations

This is an automated email from the ASF dual-hosted git repository.

kwin pushed a commit to branch feature/collect-provider-info-from-annotation-directly
in repository https://gitbox.apache.org/repos/asf/sling-org-apache-sling-providertype-bnd-plugin.git

commit 1c88a65812e1be2cbd43ddb2cde24842283bc0ae
Author: Konrad Windszus <kw...@apache.org>
AuthorDate: Tue Dec 5 21:08:41 2023 +0100

    SLING-12181 Evaluate provider type from annotations
    
    Only in case META-INF/api-info.json is not available in the class path
    (no apis-jar)
---
 pom.xml                                            | 34 +++++++-
 .../bndplugin/ProviderTypeScanner.java             | 99 ++++++++++++++++------
 .../providertype/bndplugin/MyBinaryDownload.java   | 44 ++++++++++
 .../bndplugin/ProviderTypeScannerTest.java         | 12 +--
 4 files changed, 157 insertions(+), 32 deletions(-)

diff --git a/pom.xml b/pom.xml
index 0ae2e95..0a717a6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,33 @@
         <url>https://github.com/apache/sling-org-apache-sling-providertype-bnd-plugin/tree/${project.scm.tag}</url>
         <tag>HEAD</tag>
     </scm>
-  
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                  <execution>
+                    <id>copy-dependencies</id>
+                    <phase>generate-test-resources</phase>
+                    <goals>
+                      <goal>copy-dependencies</goal>
+                    </goals>
+                    <configuration>
+                      <outputDirectory>${project.build.directory}/test-classpath</outputDirectory>
+                      <overWriteReleases>false</overWriteReleases>
+                      <overWriteSnapshots>false</overWriteSnapshots>
+                      <overWriteIfNewer>true</overWriteIfNewer>
+                      <includeArtifactIds>oak-jackrabbit-api</includeArtifactIds>
+                      <stripVersion>true</stripVersion>
+                    </configuration>
+                  </execution>
+                </executions>
+              </plugin>
+        </plugins>
+    </build>
+
     <dependencyManagement>
         <dependencies>
             <dependency>
@@ -87,5 +113,11 @@
             <artifactId>slf4j-simple</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.apache.jackrabbit</groupId>
+            <artifactId>oak-jackrabbit-api</artifactId>
+            <version>1.58.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 </project>
\ No newline at end of file
diff --git a/src/main/java/org/apache/sling/providertype/bndplugin/ProviderTypeScanner.java b/src/main/java/org/apache/sling/providertype/bndplugin/ProviderTypeScanner.java
index d4c3b0a..2d3c73d 100644
--- a/src/main/java/org/apache/sling/providertype/bndplugin/ProviderTypeScanner.java
+++ b/src/main/java/org/apache/sling/providertype/bndplugin/ProviderTypeScanner.java
@@ -29,9 +29,12 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
 
+import aQute.bnd.build.Classpath.ClassVisitor;
 import aQute.bnd.osgi.Analyzer;
 import aQute.bnd.osgi.Clazz;
+import aQute.bnd.osgi.Descriptors;
 import aQute.bnd.osgi.Descriptors.TypeRef;
+import aQute.bnd.osgi.Jar;
 import aQute.bnd.osgi.Resource;
 import aQute.bnd.service.AnalyzerPlugin;
 import aQute.bnd.service.Plugin;
@@ -39,19 +42,18 @@ import aQute.lib.json.Decoder;
 import aQute.lib.json.JSONCodec;
 import aQute.service.reporter.Reporter;
 
-/**
- * Enforces that no classes implement or extend a type marked as provider.
- * Provider types are retrieved from the resource "META-INF/api-info.json" which is expected to be provided
- * in the class path.
- */
+/** Enforces that no classes implement or extend a type marked as provider. Provider types are retrieved from the resource
+ * "META-INF/api-info.json" which is expected to be provided in the class path. */
 public class ProviderTypeScanner implements AnalyzerPlugin, Plugin {
 
     private static final String API_INFO_JSON_RESOURCE_PATH = "META-INF/api-info.json";
     private static final String FIELD_PROVIDER_TYPES = "providerTypes";
     private static final String MESSAGE = "Type \"%s\" %s provider type \"%s\". This is not allowed!";
     private static final String ATTRIBUTE_IGNORED_PROVIDER_TYPES = "ignored";
+    
+    private static final String PROVIDER_TYPE_ANNOTATION_BINARY_NAME = Descriptors.fqnToBinary("org.osgi.annotation.versioning.ProviderType");
 
-    private Map<String,String> parameters = new HashMap<>();
+    private Map<String, String> parameters = new HashMap<>();
 
     @Override
     public void setProperties(Map<String, String> map) throws Exception {
@@ -67,36 +69,42 @@ public class ProviderTypeScanner implements AnalyzerPlugin, Plugin {
 
     @Override
     public boolean analyzeJar(Analyzer analyzer) throws Exception {
-        List<Resource> apiInfoJsonResources = analyzer.findResources(s -> s.equals(API_INFO_JSON_RESOURCE_PATH)).collect(Collectors.toList());
-        if(apiInfoJsonResources.isEmpty()) {
-            analyzer.warning("Could not find resource \"%s\" in the classpath", API_INFO_JSON_RESOURCE_PATH);
+        List<Resource> apiInfoJsonResources = analyzer.findResources(s -> s.equals(API_INFO_JSON_RESOURCE_PATH))
+                .collect(Collectors.toList());
+        final Set<String> providerTypes = new HashSet<>();
+        if (apiInfoJsonResources.isEmpty()) {
+            analyzer.warning("Could not find resource \"%s\" in the classpath, retrieving info from annotations found in classpath", API_INFO_JSON_RESOURCE_PATH);
+            providerTypes.addAll(collectProviderTypesFromClasspath(analyzer));
         } else {
-            Set<String> providerTypes = new HashSet<>();
             for (Resource apiInfoJsonResource : apiInfoJsonResources) {
                 try {
-                    Set<String> resourceProviderTypes = collectProviderTypes(analyzer, apiInfoJsonResource);
-                    analyzer.trace("Added provider types from resource \"%s\": %s", apiInfoJsonResource, String.join(",", resourceProviderTypes));
+                    Set<String> resourceProviderTypes = collectProviderTypesFromApiInfo(analyzer, apiInfoJsonResource);
+                    analyzer.trace("Added provider types from resource \"%s\": %s", apiInfoJsonResource,
+                            String.join(",", resourceProviderTypes));
                     providerTypes.addAll(resourceProviderTypes);
                 } catch (Exception e) {
                     throw new IllegalStateException("Could not parse JSON from resource " + apiInfoJsonResource, e);
                 }
             }
-            // remove ignored provider types
-            Arrays.stream(parameters.getOrDefault(ATTRIBUTE_IGNORED_PROVIDER_TYPES, "").split(",")).filter(s -> !s.isBlank()).forEach(ignored -> {
-                if (providerTypes.remove(ignored)) {
-                    analyzer.trace("Ignore extensions of provider type \"%s\" due to plugin configuration", ignored);
-                } else {
-                    analyzer.warning("Ignored class \"%s\" is not defined as provider type at all, you can safely remove the according plugin parameter", ignored);
-                }
-            });
-            checkIfExtendingType(analyzer, analyzer.getClassspace().values(), providerTypes);
         }
+        // remove ignored provider types
+        Arrays.stream(parameters.getOrDefault(ATTRIBUTE_IGNORED_PROVIDER_TYPES, "").split(",")).filter(s -> !s.isBlank())
+                .forEach(ignored -> {
+                    if (providerTypes.remove(ignored)) {
+                        analyzer.trace("Ignore extensions of provider type \"%s\" due to plugin configuration", ignored);
+                    } else {
+                        analyzer.warning(
+                                "Ignored class \"%s\" is not defined as provider type at all, you can safely remove the according plugin parameter",
+                                ignored);
+                    }
+                });
+        checkIfExtendingType(analyzer, analyzer.getClassspace().values(), providerTypes);
         return false;
     }
 
     private void checkIfExtendingType(Reporter reporter, Collection<Clazz> clazzes, Set<String> providerTypes) {
         for (Clazz clazz : clazzes) {
-            if (clazz.getSuper() != null &&  (providerTypes.contains(clazz.getSuper().getFQN()))) {
+            if (clazz.getSuper() != null && (providerTypes.contains(clazz.getSuper().getFQN()))) {
                 reporter.error(MESSAGE, clazz.getFQN(), "extends", clazz.getSuper().getFQN()).file(clazz.getSourceFile());
             }
             for (TypeRef interfaceType : clazz.interfaces()) {
@@ -108,23 +116,62 @@ public class ProviderTypeScanner implements AnalyzerPlugin, Plugin {
     }
 
     @SuppressWarnings("unchecked")
-    private Set<String> collectProviderTypes(Reporter reporter, Resource apiInfoResource) throws Exception {
+    private Set<String> collectProviderTypesFromApiInfo(Reporter reporter, Resource apiInfoResource) throws Exception {
         JSONCodec codec = new JSONCodec();
         // read JSON file
         try (InputStream input = apiInfoResource.openInputStream();
-            Decoder decoder = codec.dec().from(input)) {
+                Decoder decoder = codec.dec().from(input)) {
             Map<?, ?> jsonMap = decoder.get(Map.class);
             Object providerTypes = jsonMap.get(FIELD_PROVIDER_TYPES);
             if (providerTypes == null) {
                 reporter.error("Resource \"%s\" does not contain a field named \"%s\"", API_INFO_JSON_RESOURCE_PATH, FIELD_PROVIDER_TYPES);
             } else if (!(providerTypes instanceof Collection)) {
-                reporter.error("Field \"%s\" in JSON resource \"%s\" is not containing a string array but a type converted to %s", FIELD_PROVIDER_TYPES, API_INFO_JSON_RESOURCE_PATH, providerTypes.getClass().getName());
+                reporter.error("Field \"%s\" in JSON resource \"%s\" is not containing a string array but a type converted to %s",
+                        FIELD_PROVIDER_TYPES, API_INFO_JSON_RESOURCE_PATH, providerTypes.getClass().getName());
             } else {
-                return new HashSet<>((Collection<String>)providerTypes);
+                return new HashSet<>((Collection<String>) providerTypes);
             }
         }
         return Collections.emptySet();
     }
 
+    private Set<String> collectProviderTypesFromClasspath(Analyzer analyzer) throws Exception {
+        // unfortunately bnd does not cache this information in an accessible way
+        ProviderTypeCollectorClassVisitor visitor = new ProviderTypeCollectorClassVisitor();
+        visit(visitor, analyzer);
+        return visitor.getProviderTypes();
+    }
+
+    /** Visit each class on the class path (includes package-info.class).
+     *
+     * @param visitor the visitor */
+    private void visit(ClassVisitor visitor, Analyzer analyzer) throws Exception {
+        for (Jar classpathJar : analyzer.getClasspath()) {
+            for (String path : classpathJar.getResources().keySet()) {
+                if (path.endsWith(".class")) {
+                    Resource r = classpathJar.getResource(path);
+                    Clazz c = new Clazz(analyzer, path, r);
+                    c.parseClassFile();
+                    visitor.visit(c);
+                }
+            }
+        }
+    }
 
+    private static final class ProviderTypeCollectorClassVisitor implements ClassVisitor {
+
+        final Set<String> providerTypes = new HashSet<>();
+
+        @Override
+        public boolean visit(Clazz clazz) throws Exception {
+            if (clazz.annotations(PROVIDER_TYPE_ANNOTATION_BINARY_NAME).findAny().isPresent()) {
+                providerTypes.add(clazz.getFQN());
+            }
+            return true;
+        }
+
+        public Set<String> getProviderTypes() {
+            return providerTypes;
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/test/java/org/apache/sling/providertype/bndplugin/MyBinaryDownload.java b/src/test/java/org/apache/sling/providertype/bndplugin/MyBinaryDownload.java
new file mode 100644
index 0000000..024f274
--- /dev/null
+++ b/src/test/java/org/apache/sling/providertype/bndplugin/MyBinaryDownload.java
@@ -0,0 +1,44 @@
+package org.apache.sling.providertype.bndplugin;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+
+import javax.jcr.RepositoryException;
+
+import org.apache.jackrabbit.api.binary.BinaryDownload;
+import org.apache.jackrabbit.api.binary.BinaryDownloadOptions;
+
+public class MyBinaryDownload implements BinaryDownload {
+
+    @Override
+    public InputStream getStream() throws RepositoryException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    @Override
+    public int read(byte[] b, long position) throws IOException, RepositoryException {
+        // TODO Auto-generated method stub
+        return 0;
+    }
+
+    @Override
+    public long getSize() throws RepositoryException {
+        // TODO Auto-generated method stub
+        return 0;
+    }
+
+    @Override
+    public void dispose() {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public URI getURI(BinaryDownloadOptions downloadOptions) throws RepositoryException {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+}
diff --git a/src/test/java/org/apache/sling/providertype/bndplugin/ProviderTypeScannerTest.java b/src/test/java/org/apache/sling/providertype/bndplugin/ProviderTypeScannerTest.java
index bf26f0f..88cfdab 100644
--- a/src/test/java/org/apache/sling/providertype/bndplugin/ProviderTypeScannerTest.java
+++ b/src/test/java/org/apache/sling/providertype/bndplugin/ProviderTypeScannerTest.java
@@ -38,7 +38,7 @@ class ProviderTypeScannerTest {
     static BndBuilderExtension bndBuilderExtension = new BndBuilderExtension(new ProviderTypeScanner());
 
     @Test
-    void testBuildWithViolations() throws Exception {
+    void testBuildWithViolationsAndApiInfoJson() throws Exception {
         Builder builder = bndBuilderExtension.builder;
         // add classpath entry with api-info.json
         builder.setClasspath(new File[] { new File("src/test/resources") });
@@ -56,12 +56,14 @@ class ProviderTypeScannerTest {
     @Test
     void testBuildWithoutProviderTypeMetadata() throws Exception {
         Builder builder = bndBuilderExtension.builder;
+        // add classpath entry with api-info.json
+        builder.setClasspath(new File[] { new File("target/test-classpath/oak-jackrabbit-api.jar") });
         try (Jar jar = builder.build()) {
-            if (!builder.getErrors().isEmpty()) {
-                fail(String.join("\n", builder.getErrors()));
-            }
+            List<String> expectedErrors = Arrays.asList(
+                    "Type \"org.apache.sling.providertype.bndplugin.MyBinaryDownload\" implements provider type \"org.apache.jackrabbit.api.binary.BinaryDownload\". This is not allowed!");
+            assertEquals(expectedErrors, builder.getErrors());
             List<String> expectedWarnings = Arrays.asList(
-                    "Could not find resource \"META-INF/api-info.json\" in the classpath");
+                    "Could not find resource \"META-INF/api-info.json\" in the classpath, retrieving info from annotations found in classpath");
             assertEquals(expectedWarnings, builder.getWarnings());
         }
     }