Add Gradle Enterprise to Develocity 3.17+ migration recipe for Gradle

rewrite-gradle/src/main/java/org/openrewrite/gradle/plugins/MigrateGradleEnterpriseToDevelocity.java

@@ -0,0 +1,258 @@
+package org.openrewrite.gradle.plugins;
+
+import lombok.EqualsAndHashCode;
+import lombok.Value;
+import org.openrewrite.*;
+import org.openrewrite.gradle.GradleParser;
+import org.openrewrite.gradle.IsSettingsGradle;
+import org.openrewrite.groovy.GroovyIsoVisitor;
+import org.openrewrite.groovy.tree.G;
+import org.openrewrite.internal.ListUtils;
+import org.openrewrite.internal.lang.Nullable;
+import org.openrewrite.java.style.IntelliJ;
+import org.openrewrite.java.style.TabsAndIndentsStyle;
+import org.openrewrite.java.tree.*;
+import org.openrewrite.marker.Markers;
+import org.openrewrite.semver.Semver;
+import org.openrewrite.semver.VersionComparator;
+
+import java.nio.file.Paths;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.singletonList;
+
+@Value
+@EqualsAndHashCode(callSuper = false)
+public class MigrateGradleEnterpriseToDevelocity extends Recipe {
+    @Option(displayName = "Plugin version",
+            description = "An exact version number or node-style semver selector used to select the version number. " +
+                    "You can also use `latest.release` for the latest available version and `latest.patch` if " +
+                    "the current version is a valid semantic version. For more details, you can look at the documentation " +
+                    "page of [version selectors](https://docs.openrewrite.org/reference/dependency-version-selectors). " +
+                    "Defaults to `latest.release`.",
+            example = "3.x",
+            required = false)
+    @Nullable
+    String version;
+
+    @Override
+    public String getDisplayName() {
+        return "Migrate from Gradle Enterprise to Develocity";
+    }
+
+    @Override
+    public String getDescription() {
+        return "Migrate from the Gradle Enterprise Gradle plugin to the Develocity Gradle plugin.";
+    }
+
+    @Override
+    public Validated<Object> validate() {
+        Validated<Object> validated = super.validate();
+        if (version != null) {
+            VersionComparator versionComparator = Objects.requireNonNull(Semver.validate("[3.17,)", null).getValue());
+            validated = validated.and(Validated.test("version", "Version must be 3.17+", version, v -> versionComparator.isValid(null, v)));
+        }
+        return validated;
+    }
+
+    @Override
+    public TreeVisitor<?, ExecutionContext> getVisitor() {
+        return Preconditions.check(
+                new IsSettingsGradle<>(),
+                new GroovyIsoVisitor<ExecutionContext>() {
+                    @Override
+                    public G.CompilationUnit visitCompilationUnit(G.CompilationUnit cu, ExecutionContext ctx) {
+                        G.CompilationUnit g = cu;
+                        g = (G.CompilationUnit) new ChangePlugin("com.gradle.enterprise", "com.gradle.develocity", version).getVisitor()
+                                .visitNonNull(g, ctx);
+                        g = (G.CompilationUnit) new ChangePluginVersion("com.gradle.common-custom-user-data-gradle-plugin", "2.x", null).getVisitor()
+                                .visitNonNull(g, ctx);
+                        g = (G.CompilationUnit) new MigrateConfigurationVisitor().visitNonNull(g, ctx);
+                        return g;
+                    }
+                }
+        );
+    }
+
+    private static class MigrateConfigurationVisitor extends GroovyIsoVisitor<ExecutionContext> {
+        @Override
+        public @Nullable J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
+            J.MethodInvocation m = super.visitMethodInvocation(method, ctx);
+            if (m.getSimpleName().equals("gradleEnterprise") && m.getArguments().size() == 1 && m.getArguments().get(0) instanceof J.Lambda) {
+                return m.withName(m.getName().withSimpleName("develocity"));
+            }
+
+            if (m.getSimpleName().startsWith("publishAlways") && withinMethodInvocations(Arrays.asList("gradleEnterprise", "buildScan"))) {
+                if (m.getSimpleName().equals("publishAlways") && noArguments(m.getArguments())) {
+                    // As of 3.17+, `publishAlways` is the default, so it is recommended to not configure anything
+                    return null;
+                }
+
+                if (m.getSimpleName().equals("publishAlwaysIf")) {
+                    J.MethodInvocation publishingTemplate = develocityPublishAlwaysIfDsl(getIndent(getCursor().firstEnclosing(G.CompilationUnit.class)), ctx);
+                    if (publishingTemplate == null) {
+                        return m;
+                    }
+
+                    return publishingTemplate.withArguments(ListUtils.mapFirst(publishingTemplate.getArguments(), arg -> {
+                        if (arg instanceof J.Lambda) {
+                            J.Lambda lambda = (J.Lambda) arg;
+                            J.Block block = (J.Block) lambda.getBody();
+                            return lambda.withBody(block.withStatements(ListUtils.mapFirst(block.getStatements(), s -> {
+                                if (s instanceof J.Return) {
+                                    J.Return _return = (J.Return) s;
+                                    return _return.withExpression(m.getArguments().get(0));
+                                }
+                                return s;
+                            })));
+                        }
+                        return arg;
+                    }));
+                }
+            }
+
+            if (m.getSimpleName().startsWith("publishOnFailure") && withinMethodInvocations(Arrays.asList("gradleEnterprise", "buildScan"))) {
+                J.MethodInvocation publishingTemplate = develocityPublishOnFailureIfDsl(getIndent(getCursor().firstEnclosing(G.CompilationUnit.class)), ctx);
+                if (publishingTemplate == null) {
+                    return m;
+                }
+
+                if (m.getSimpleName().equals("publishOnFailure") && noArguments(m.getArguments())) {
+                    return publishingTemplate;
+                }
+
+                if (m.getSimpleName().equals("publishOnFailureIf") && m.getArguments().size() == 1 && m.getArguments().get(0) instanceof J.Binary) {
+                    return publishingTemplate.withArguments(ListUtils.mapFirst(publishingTemplate.getArguments(), arg -> {
+                        if (arg instanceof J.Lambda) {
+                            J.Lambda lambda = (J.Lambda) arg;
+                            J.Block block = (J.Block) lambda.getBody();
+                            return lambda.withBody(block.withStatements(ListUtils.mapFirst(block.getStatements(), s -> {
+                                if (s instanceof J.Return && ((J.Return) s).getExpression() instanceof J.Unary) {
+                                    J.Return _return = (J.Return) s;
+                                    return _return.withExpression(new J.Binary(
+                                            Tree.randomId(),
+                                            Space.EMPTY,
+                                            Markers.EMPTY,
+                                            _return.getExpression(),
+                                            JLeftPadded.build(J.Binary.Type.And).withBefore(Space.SINGLE_SPACE),
+                                            Space.formatFirstPrefix(m.getArguments(), Space.SINGLE_SPACE).get(0),
+                                            JavaType.Primitive.Boolean
+                                    ));
+                                }
+                                return s;
+                            })));
+                        }
+                        return arg;
+                    }));
+                }
+            }
+
+            return m;
+        }
+
+        @Override
+        public J.Assignment visitAssignment(J.Assignment assignment, ExecutionContext ctx) {
+            J.Assignment a = super.visitAssignment(assignment, ctx);
+
+            if (a.getVariable() instanceof J.Identifier && ((J.Identifier) a.getVariable()).getSimpleName().equals("taskInputFiles") && withinMethodInvocations(Arrays.asList("gradleEnterprise", "buildScan", "capture"))) {
+                return a.withVariable(((J.Identifier) a.getVariable()).withSimpleName("fileFingerprints"));
+            }
+
+            return a;
+        }
+
+        private boolean noArguments(List<Expression> arguments) {
+            return arguments.isEmpty() || (arguments.size() == 1 && arguments.get(0) instanceof J.Empty);
+        }
+
+        private boolean withinMethodInvocations(List<String> methods) {
+            Cursor current = getCursor().getParent();
+            for (int i = methods.size() - 1; i >= 0; i--) {
+                current = findMethodInvocation(current);
+                if (current == null) {
+                    return false;
+                }
+
+                if (!((J.MethodInvocation) current.getValue()).getSimpleName().equals(methods.get(i))) {
+                    return false;
+                }
+
+                current = current.getParent();
+            }
+
+            return true;
+        }
+
+        private @Nullable Cursor findMethodInvocation(@Nullable Cursor start) {
+            if (start == null) {
+                return null;
+            }
+
+            Cursor current = start;
+            while (current.getParent() != null) {
+                if (current.getValue() instanceof J.MethodInvocation) {
+                    return current;
+                }
+
+                current = current.getParent();
+            }
+
+            return null;
+        }
+
+        @Nullable
+        private J.MethodInvocation develocityPublishAlwaysIfDsl(String indent, ExecutionContext ctx) {
+            StringBuilder ge = new StringBuilder("\ndevelocity {\n");
+            ge.append(indent).append("buildScan {\n");
+            ge.append(indent).append(indent).append("publishing.onlyIf { true }\n");
+            ge.append(indent).append("}\n");
+            ge.append("}\n");
+
+            G.CompilationUnit cu = GradleParser.builder().build()
+                    .parseInputs(singletonList(
+                            Parser.Input.fromString(Paths.get("settings.gradle"), ge.toString())), null, ctx)
+                    .map(G.CompilationUnit.class::cast)
+                    .findFirst()
+                    .orElseThrow(() -> new IllegalArgumentException("Could not parse as Gradle"));
+
+            J.MethodInvocation develocity = (J.MethodInvocation) cu.getStatements().get(0);
+            J.MethodInvocation buildScan = (J.MethodInvocation) ((J.Return) ((J.Block) ((J.Lambda) develocity.getArguments().get(0)).getBody()).getStatements().get(0)).getExpression();
+            return (J.MethodInvocation) ((J.Return) ((J.Block) ((J.Lambda) buildScan.getArguments().get(0)).getBody()).getStatements().get(0)).getExpression();
+        }
+
+        @Nullable
+        private J.MethodInvocation develocityPublishOnFailureIfDsl(String indent, ExecutionContext ctx) {
+            StringBuilder ge = new StringBuilder("\ndevelocity {\n");
+            ge.append(indent).append("buildScan {\n");
+            ge.append(indent).append(indent).append("publishing.onlyIf { !it.buildResult.failures.empty }\n");
+            ge.append(indent).append("}\n");
+            ge.append("}\n");
+
+            G.CompilationUnit cu = GradleParser.builder().build()
+                    .parseInputs(singletonList(
+                            Parser.Input.fromString(Paths.get("settings.gradle"), ge.toString())), null, ctx)
+                    .map(G.CompilationUnit.class::cast)
+                    .findFirst()
+                    .orElseThrow(() -> new IllegalArgumentException("Could not parse as Gradle"));
+
+            J.MethodInvocation develocity = (J.MethodInvocation) cu.getStatements().get(0);
+            J.MethodInvocation buildScan = (J.MethodInvocation) ((J.Return) ((J.Block) ((J.Lambda) develocity.getArguments().get(0)).getBody()).getStatements().get(0)).getExpression();
+            return (J.MethodInvocation) ((J.Return) ((J.Block) ((J.Lambda) buildScan.getArguments().get(0)).getBody()).getStatements().get(0)).getExpression();
+        }
+
+        private String getIndent(G.CompilationUnit cu) {
+            TabsAndIndentsStyle style = cu.getStyle(TabsAndIndentsStyle.class, IntelliJ.tabsAndIndents());
+            if (style.getUseTabCharacter()) {
+                return "\t";
+            } else {
+                StringBuilder sb = new StringBuilder();
+                for (int i = 0; i < style.getIndentSize(); i++) {
+                    sb.append(" ");
+                }
+                return sb.toString();
+            }
+        }
+    }
+}