diff options
Diffstat (limited to 'vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/CoverageScanner.java')
-rw-r--r-- | vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/CoverageScanner.java | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/CoverageScanner.java b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/CoverageScanner.java new file mode 100644 index 000000000..c1c67d77b --- /dev/null +++ b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/CoverageScanner.java @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * + * 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. + */ + +package io.fd.hc2vpp.docs.core; + + +import static java.lang.String.format; + +import io.fd.hc2vpp.docs.api.Operation; +import java.io.IOException; +import java.io.InputStream; +import java.util.Collections; +import java.util.HashSet; +import java.util.Set; +import org.objectweb.asm.ClassReader; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * Scans provided class for reference under specified crud method + */ +public class CoverageScanner { + + private static final Logger LOG = LoggerFactory.getLogger(CoverageScanner.class); + + private final Class<?> classToScan; + private final Operation.CrudOperation crudOperation; + private final Class<?> referenceClass; + + public CoverageScanner(final Class<?> classToScan, + final Operation.CrudOperation crudOperation, + final Class<?> referenceClass) { + this.classToScan = classToScan; + this.crudOperation = crudOperation; + this.referenceClass = referenceClass; + } + + static ClassReader loadClass(String className) { + try (InputStream classStream = + CoverageScanner.class.getClassLoader().getResourceAsStream(className + ".class")) { + return new ClassReader(classStream); + } catch (IOException e) { + throw new IllegalStateException(format("Unable to load bytecode for class %s", className), e); + } + } + + public Set<PluginMethodReference> scan() { + LOG.debug("Scanning class {}", classToScan.getName()); + final ClassReader classReader = loadClass(byteCodeStyleReference(classToScan.getName())); + final Set<PluginMethodReference> foundReferences = Collections.synchronizedSet(new HashSet<>()); + classReader.accept(new MethodDelegatingClassVisitor(byteCodeStyleReference(classToScan.getName()), + crudOperation.getMethodReference(), byteCodeStyleReference(referenceClass.getPackage().getName()), + foundReferences, null), ClassReader.SKIP_DEBUG); + return foundReferences; + } + + // converts java style reference to bytecode-style name(with slashes instead of dots) + private static String byteCodeStyleReference(final String javaStyleName) { + return javaStyleName.replace(".", "/"); + } +} |