org.openrewrite.launchdarkly.MigrateUserToContext Maven / Gradle / Ivy
/*
* Copyright 2023 the original author or authors.
*
* 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
*
* https://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 org.openrewrite.launchdarkly;
import lombok.EqualsAndHashCode;
import lombok.Value;
import org.openrewrite.*;
import org.openrewrite.internal.StringUtils;
import org.openrewrite.java.*;
import org.openrewrite.java.search.UsesType;
import org.openrewrite.java.tree.Expression;
import org.openrewrite.java.tree.J;
import org.openrewrite.java.tree.JavaType;
import org.openrewrite.java.tree.Space;
import org.openrewrite.marker.Markers;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import static java.util.Objects.requireNonNull;
@Value
@EqualsAndHashCode(callSuper = false)
public class MigrateUserToContext extends Recipe {
private static final MethodMatcher NEW_USER = new MethodMatcher("com.launchdarkly.sdk.LDUser (java.lang.String)");
private static final MethodMatcher NEW_USER_BUILDER = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder (java.lang.String)");
private static final List BASIC_ATTRIBUTES = Arrays.asList("avatar", "country", "email", "firstName", "ip", "lastName");
private static final List PRIVATE_ATTRIBUTES = Arrays.asList("privateAvatar", "privateCountry", "privateEmail", "privateFirstName", "privateIp", "privateLastName", "privateName");
private static final MethodMatcher BUILTIN_ATTRIBUTE = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder *(java.lang.String)");
private static final MethodMatcher BUILTIN_PRIVATE_ATTRIBUTE = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder private*(java.lang.String)");
private static final MethodMatcher CUSTOM_ATTRIBUTES = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder custom(java.lang.String, ..)"); // FIXME: This really should be `*`
private static final MethodMatcher PRIVATE_CUSTOM_ATTRIBUTES = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder privateCustom(java.lang.String, ..)"); // FIXME: This really should be `*`
@Override
public String getDisplayName() {
return "Migrate `LDUser` to `LDContext`";
}
@Override
public String getDescription() {
return "Migrate from `LDUser` and `LDUser.Builder` to `LDContext` and `ContextBuilder`.";
}
@Override
public TreeVisitor getVisitor() {
return Preconditions.check(
new UsesType<>("com.launchdarkly.sdk.LDUser", null),
new JavaVisitor() {
@Override
public J visitNewClass(J.NewClass newClass, ExecutionContext ctx) {
if (NEW_USER.matches(newClass)) {
maybeRemoveImport("com.launchdarkly.sdk.LDUser");
maybeAddImport("com.launchdarkly.sdk.LDContext");
doAfterVisit(new ChangeType("com.launchdarkly.sdk.LDUser", "com.launchdarkly.sdk.LDContext", null).getVisitor());
return JavaTemplate.builder("LDContext.create(#{any(java.lang.String)})")
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.LDContext")
.build()
.apply(getCursor(), newClass.getCoordinates().replace(), newClass.getArguments().get(0));
} else if (NEW_USER_BUILDER.matches(newClass)) {
maybeRemoveImport("com.launchdarkly.sdk.LDUser");
maybeAddImport("com.launchdarkly.sdk.LDContext");
doAfterVisit(new ChangeType("com.launchdarkly.sdk.LDUser", "com.launchdarkly.sdk.LDContext", null).getVisitor());
return JavaTemplate.builder("LDContext.builder(#{any(java.lang.String)})")
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.LDContext")
.build()
.apply(getCursor(), newClass.getCoordinates().replace(), newClass.getArguments().get(0));
}
return super.visitNewClass(newClass, ctx);
}
@Override
public J visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
J.MethodInvocation m = (J.MethodInvocation) super.visitMethodInvocation(method, ctx);
if (BUILTIN_ATTRIBUTE.matches(m) && BASIC_ATTRIBUTES.contains(m.getSimpleName())) {
String code;
if (requireNonNull(m.getPadding().getSelect()).getAfter().getWhitespace().contains("\n")) {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}\n.set(#{any(java.lang.String)}, #{any()})";
} else {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}.set(#{any(java.lang.String)}, #{any()})";
}
return JavaTemplate.builder(code)
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.ContextBuilder")
.build()
.apply(
getCursor(),
m.getCoordinates().replace(),
m.getSelect(),
new J.Literal(Tree.randomId(), Space.EMPTY, Markers.EMPTY, m.getSimpleName(), "\"" + m.getSimpleName() + "\"", null, JavaType.Primitive.String),
m.getArguments().get(0)
);
} else if (BUILTIN_PRIVATE_ATTRIBUTE.matches(m) && PRIVATE_ATTRIBUTES.contains(m.getSimpleName())) {
doAfterVisit(new UseVarargsForPrivateAttributes());
String code;
if (requireNonNull(m.getPadding().getSelect()).getAfter().getWhitespace().contains("\n")) {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}\n.set(#{any(java.lang.String)}, #{any()})\n.privateAttributes(#{any(java.lang.String)})";
} else {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}.set(#{any(java.lang.String)}, #{any()}).privateAttributes(#{any(java.lang.String)})";
}
String attributeName = StringUtils.uncapitalize(m.getSimpleName().replace("private", ""));
return JavaTemplate.builder(code)
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.ContextBuilder")
.build()
.apply(
getCursor(),
m.getCoordinates().replace(),
m.getSelect(),
new J.Literal(Tree.randomId(), Space.EMPTY, Markers.EMPTY, attributeName, "\"" + attributeName + "\"", null, JavaType.Primitive.String),
m.getArguments().get(0),
new J.Literal(Tree.randomId(), Space.EMPTY, Markers.EMPTY, attributeName, "\"" + attributeName + "\"", null, JavaType.Primitive.String)
);
} else if (CUSTOM_ATTRIBUTES.matches(m)) {
String code;
if (requireNonNull(m.getPadding().getSelect()).getAfter().getWhitespace().contains("\n")) {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}\n.set(#{any(java.lang.String)}, #{any()})";
} else {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}.set(#{any(java.lang.String)}, #{any()})";
}
return JavaTemplate.builder(code)
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.ContextBuilder")
.build()
.apply(getCursor(), m.getCoordinates().replace(), m.getSelect(), m.getArguments().get(0), m.getArguments().get(1));
} else if (PRIVATE_CUSTOM_ATTRIBUTES.matches(m)) {
doAfterVisit(new UseVarargsForPrivateAttributes());
String code;
if (requireNonNull(m.getPadding().getSelect()).getAfter().getWhitespace().contains("\n")) {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}\n.set(#{any(java.lang.String)}, #{any()})\n.privateAttributes(#{any(java.lang.String)})";
} else {
code = "#{any(com.launchdarkly.sdk.ContextBuilder)}.set(#{any(java.lang.String)}, #{any()}).privateAttributes(#{any(java.lang.String)})";
}
return JavaTemplate.builder(code)
.contextSensitive()
.javaParser(JavaParser.fromJavaVersion().classpathFromResources(ctx, "launchdarkly-java-server-sdk-6"))
.imports("com.launchdarkly.sdk.ContextBuilder")
.build()
.apply(getCursor(), m.getCoordinates().replace(), m.getSelect(), m.getArguments().get(0), m.getArguments().get(1), m.getArguments().get(0));
}
return m;
}
}
);
}
private static class UseVarargsForPrivateAttributes extends JavaIsoVisitor {
private static final MethodMatcher CONTEXT_BUILDER_MATCHER = new MethodMatcher("com.launchdarkly.sdk.ContextBuilder *(..)");
private static final MethodMatcher PRIVATE_ATTRIBUTES_STRING_VARARGS_MATCHER = new MethodMatcher("com.launchdarkly.sdk.ContextBuilder privateAttributes(java.lang.String...)");
private static final MethodMatcher USER_BUILDER_BUILD_MATCHER = new MethodMatcher("com.launchdarkly.sdk.LDUser.Builder build()");
private static final MethodMatcher CONTEXT_BUILDER_BUILD_MATCHER = new MethodMatcher("com.launchdarkly.sdk.ContextBuilder build()");
@Override
public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
J.MethodInvocation m = super.visitMethodInvocation(method, ctx);
if (!(USER_BUILDER_BUILD_MATCHER.matches(m) || CONTEXT_BUILDER_BUILD_MATCHER.matches(m))) {
return m;
}
List chain = computeChain(m);
return unfold(m, chain);
}
private List computeChain(J.MethodInvocation build) {
List chain = new ArrayList<>();
if (!(build.getSelect() instanceof J.MethodInvocation)) {
return chain;
}
List attributes = new ArrayList<>();
Expression select = build.getSelect();
int privateAttributesInvocations = 0;
int lastPrivateAttributesIdx = -1;
while (CONTEXT_BUILDER_MATCHER.matches(select)) {
J.MethodInvocation m = (J.MethodInvocation) select;
if (PRIVATE_ATTRIBUTES_STRING_VARARGS_MATCHER.matches(m)) {
if (lastPrivateAttributesIdx == -1 && CONTEXT_BUILDER_MATCHER.matches(m.getSelect())) {
lastPrivateAttributesIdx = chain.size();
chain.add(m);
}
attributes.addAll(0, m.getArguments());
privateAttributesInvocations++;
} else {
chain.add(m);
}
select = m.getSelect();
}
if (privateAttributesInvocations <= 1) {
return Collections.emptyList();
}
for (int i = 1; i < attributes.size(); i++) {
attributes.set(i, attributes.get(i).withPrefix(Space.SINGLE_SPACE));
}
chain.set(lastPrivateAttributesIdx, chain.get(lastPrivateAttributesIdx).withArguments(attributes));
return chain;
}
private J.MethodInvocation unfold(J.MethodInvocation build, List chain) {
if (chain.isEmpty()) {
return build;
}
Collections.reverse(chain);
J.MethodInvocation select = chain.get(0);
for (int i = 1; i < chain.size(); i++) {
select = chain.get(i)
.withId(Tree.randomId())
.withSelect(select);
}
return build.withSelect(select);
}
}
}