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Use checksum to decided if input spec has changed. (#1502)

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This commit is contained in:
rasmusfaber 2018-11-28 09:43:00 +01:00 committed by William Cheng
parent ebf67e683c
commit d8dde6855f
1 changed files with 43 additions and 3 deletions
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40
modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java
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@ -56,6 +56,10 @@ import org.sonatype.plexus.build.incremental.DefaultBuildContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Charsets;
import com.google.common.hash.Hashing;
import com.google.common.io.Files;
/**
* Goal which generates client/server code from a OpenAPI json/yaml definition.
*/
@ -317,6 +321,12 @@ public class CodeGenMojo extends AbstractMojo {
@Parameter(name = "skip", property = "codegen.skip", required = false, defaultValue = "false")
private Boolean skip;
/**
* Skip the execution if the source file is older than the output folder.
*/
@Parameter(name = "skipIfSpecIsUnchanged", property = "codegen.skipIfSpecIsUnchanged", required = false, defaultValue = "false")
private Boolean skipIfSpecIsUnchanged;
/**
* Add the output directory to the project as a source root, so that the generated java types
* are compiled and included in the project artifact.
@ -368,6 +378,21 @@ public class CodeGenMojo extends AbstractMojo {
}
}
if (skipIfSpecIsUnchanged) {
if (inputSpecFile.exists()) {
File storedInputSpecHashFile = getHashFile(inputSpecFile);
if(storedInputSpecHashFile.exists()) {
String inputSpecHash = Files.asByteSource(inputSpecFile).hash(Hashing.sha256()).toString();
String storedInputSpecHash = Files.asCharSource(storedInputSpecHashFile, Charsets.UTF_8).read();
if (inputSpecHash.equals(storedInputSpecHash)) {
getLog().info(
"Code generation is skipped because input was unchanged");
return;
}
}
}
}
// attempt to read from config file
CodegenConfigurator configurator = CodegenConfigurator.fromFile(configurationFile);
@ -606,6 +631,17 @@ public class CodeGenMojo extends AbstractMojo {
if (buildContext != null) {
buildContext.refresh(new File(getCompileSourceRoot()));
}
// Store a checksum of the input spec
File storedInputSpecHashFile = getHashFile(inputSpecFile);
String inputSpecHash = Files.asByteSource(inputSpecFile).hash(Hashing.sha256()).toString();
if (storedInputSpecHashFile.getParent() != null && !new File(storedInputSpecHashFile.getParent()).exists()) {
File parent = new File(storedInputSpecHashFile.getParent());
parent.mkdirs();
}
Files.asCharSink(storedInputSpecHashFile, Charsets.UTF_8).write(inputSpecHash);
} catch (Exception e) {
// Maven logs exceptions thrown by plugins only if invoked with -e
// I find it annoying to jump through hoops to get basic diagnostic information,
@ -619,6 +655,10 @@ public class CodeGenMojo extends AbstractMojo {
}
}
private File getHashFile(File inputSpecFile) {
return new File(output.getPath() + File.separator + ".openapi-generator" + File.separator + inputSpecFile.getName() + ".sha256");
}
private String getCompileSourceRoot() {
final Object sourceFolderObject =
configOptions == null ? null : configOptions