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Combine application and resources layers into a single layer

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Closes gh-20562
pull/20628/head
Madhura Bhave 5 years ago
parent 952e529787
commit a06f4f21e3
9 changed files with 17 additions and 65 deletions
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7
spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/asciidoc/packaging.adoc
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@ -284,11 +284,10 @@ By default, the following layers are created:
* `dependencies` for any dependency whose version does not contain `SNAPSHOT`.
* `snapshot-dependencies` for any dependency whose version contains `SNAPSHOT`.
* `resources` for static resources at the default locations, i.e. `META-INF/resources/`, `resources/`, `static/`, `public/`.
* `application` for any other classes and resources.
* `application` for application classes and resources.
The layers order is important as it determines how likely previous layers can be cached when part of the application changes.
The default order is `dependencies`, `snapshot-dependencies`, `resources`, and `application`.
The default order is `dependencies`, `snapshot-dependencies`, and `application`.
Content that is least likely to change should be added first, followed by layers that are more likely to change.
When you create a layered jar, the `spring-boot-layertools` jar will be added as a dependency to your jar.
@ -328,7 +327,7 @@ include::../gradle/packaging/boot-jar-layered-custom.gradle.kts[tags=layered]
Each `layerContent` closure defines a strategy to include or exclude an entry of the jar in a layer.
When an entry matches a strategy, it is included in the layer and further strategies are ignored.
This is illustrated by the `dependencies` and `application` layers that have a "catch-all" include filter used to add any libraries or classes that were not processed by previous strategies.
This is illustrated by the `dependencies` layer that has a "catch-all" include filter used to add any libraries that were not processed by previous strategies.
The content of a `libraries` layer can be customized using filters to `include` or `exclude` based on the dependency coordinates.
The format is `groupId:artifactId[:version]`.

8
spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/packaging/boot-jar-layered-custom.gradle
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@ -10,7 +10,7 @@ bootJar {
// tag::layered[]
bootJar {
layers {
layersOrder "dependencies", "snapshot-dependencies", "resources", "application"
layersOrder "dependencies", "snapshot-dependencies", "application"
libraries {
layerContent("snapshot-dependencies") {
coordinates {
@ -24,12 +24,6 @@ bootJar {
}
}
application {
layerContent("resources") {
locations {
include "META-INF/resources/**", "resources/**"
include "static/**", "public/**"
}
}
layerContent("application") {
locations {
include "**"

8
spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/packaging/boot-jar-layered-custom.gradle.kts
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@ -8,7 +8,7 @@ plugins {
// tag::layered[]
tasks.getByName<BootJar>("bootJar") {
layers {
layersOrder("dependencies", "snapshot-dependencies", "resources", "application")
layersOrder("dependencies", "snapshot-dependencies", "application")
libraries {
layerContent("snapshot-dependencies") {
coordinates {
@ -22,12 +22,6 @@ tasks.getByName<BootJar>("bootJar") {
}
}
application {
layerContent("resources") {
locations {
include("META-INF/resources/**", "resources/**")
include("static/**", "public/**")
}
}
layerContent("application") {
locations {
include("**")

2
spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/bundling/BootJarIntegrationTests.java
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@ -81,7 +81,7 @@ class BootJarIntegrationTests extends AbstractBootArchiveIntegrationTests {
assertThat(jarFile.getEntry("BOOT-INF/layers/snapshot-dependencies/lib/commons-io-2.7-SNAPSHOT.jar"))
.isNotNull();
assertThat(jarFile.getEntry("BOOT-INF/layers/application/classes/example/Main.class")).isNotNull();
assertThat(jarFile.getEntry("BOOT-INF/layers/resources/classes/static/file.txt")).isNotNull();
assertThat(jarFile.getEntry("BOOT-INF/layers/application/classes/static/file.txt")).isNotNull();
}
}

4
spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/bundling/BootJarTests.java
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@ -103,7 +103,7 @@ class BootJarTests extends AbstractBootArchiveTests<BootJar> {
void whenJarIsLayeredThenLayersIndexIsPresentAndListsLayersInOrder() throws IOException {
try (JarFile jarFile = new JarFile(createLayeredJar())) {
assertThat(entryLines(jarFile, "BOOT-INF/layers.idx")).containsExactly("dependencies",
"snapshot-dependencies", "resources", "application");
"snapshot-dependencies", "application");
}
}
@ -116,7 +116,7 @@ class BootJarTests extends AbstractBootArchiveTests<BootJar> {
.contains("BOOT-INF/layers/snapshot-dependencies/lib/third-library-SNAPSHOT.jar")
.containsSubsequence("BOOT-INF/layers/application/classes/com/example/Application.class",
"BOOT-INF/layers/application/classes/application.properties")
.contains("BOOT-INF/layers/resources/classes/static/test.css");
.contains("BOOT-INF/layers/application/classes/static/test.css");
}
@Test

18
spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/ImplicitLayerResolver.java
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@ -24,13 +24,8 @@ package org.springframework.boot.loader.tools;
*/
class ImplicitLayerResolver extends StandardLayers {
private static final String[] RESOURCE_LOCATIONS = { "META-INF/resources/", "resources/", "static/", "public/" };
@Override
public Layer getLayer(String name) {
if (!isClassFile(name) && isInResourceLocation(name)) {
return RESOURCES;
}
return APPLICATION;
}
@ -42,17 +37,4 @@ class ImplicitLayerResolver extends StandardLayers {
return DEPENDENCIES;
}
private boolean isClassFile(String name) {
return name.endsWith(".class");
}
private boolean isInResourceLocation(String name) {
for (String resourceLocation : RESOURCE_LOCATIONS) {
if (name.startsWith(resourceLocation)) {
return true;
}
}
return false;
}
}

7
spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/StandardLayers.java
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@ -26,7 +26,6 @@ import java.util.List;
* <ol>
* <li>"dependencies" - For non snapshot dependencies</li>
* <li>"snapshot-dependencies" - For snapshot dependencies</li>
* <li>"resources" - For static resources such as HTML files</li>
* <li>"application" - For application classes and resources</li>
* </ol>
*
@ -46,11 +45,6 @@ public abstract class StandardLayers implements Layers {
*/
public static final Layer SNAPSHOT_DEPENDENCIES = new Layer("snapshot-dependencies");
/**
* The resources layer.
*/
public static final Layer RESOURCES = new Layer("resources");
/**
* The application layer.
*/
@ -61,7 +55,6 @@ public abstract class StandardLayers implements Layers {
List<Layer> layers = new ArrayList<>();
layers.add(DEPENDENCIES);
layers.add(SNAPSHOT_DEPENDENCIES);
layers.add(RESOURCES);
layers.add(APPLICATION);
LAYERS = Collections.unmodifiableList(layers);
}

12
spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/test/java/org/springframework/boot/loader/tools/ImplicitLayerResolverTests.java
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@ -35,15 +35,15 @@ class ImplicitLayerResolverTests {
@Test
void iteratorReturnsLayers() {
assertThat(this.layers).containsExactly(StandardLayers.DEPENDENCIES, StandardLayers.SNAPSHOT_DEPENDENCIES,
StandardLayers.RESOURCES, StandardLayers.APPLICATION);
StandardLayers.APPLICATION);
}
@Test
void getLayerWhenNameInResourceLocationReturnsResourceLayer() {
assertThat(this.layers.getLayer("META-INF/resources/logo.gif")).isEqualTo(StandardLayers.RESOURCES);
assertThat(this.layers.getLayer("resources/logo.gif")).isEqualTo(StandardLayers.RESOURCES);
assertThat(this.layers.getLayer("static/logo.gif")).isEqualTo(StandardLayers.RESOURCES);
assertThat(this.layers.getLayer("public/logo.gif")).isEqualTo(StandardLayers.RESOURCES);
void getLayerWhenNameInResourceLocationReturnsApplicationLayer() {
assertThat(this.layers.getLayer("META-INF/resources/logo.gif")).isEqualTo(StandardLayers.APPLICATION);
assertThat(this.layers.getLayer("resources/logo.gif")).isEqualTo(StandardLayers.APPLICATION);
assertThat(this.layers.getLayer("static/logo.gif")).isEqualTo(StandardLayers.APPLICATION);
assertThat(this.layers.getLayer("public/logo.gif")).isEqualTo(StandardLayers.APPLICATION);
}
@Test

16
spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/docs/asciidoc/packaging.adoc
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@ -102,11 +102,10 @@ By default, the following layers are created:
* `dependencies` for any dependency whose version does not contain `SNAPSHOT`.
* `snapshot-dependencies` for any dependency whose version contains `SNAPSHOT`.
* `resources` for static resources at the default locations, i.e. `META-INF/resources/`, `resources/`, `static/`, `public/`.
* `application` for any other classes and resources.
* `application` for application classes and resources.
The layers order is important as it determines how likely previous layers can be cached when part of the application changes.
The default order is `dependencies`, `snapshot-dependencies`, `resources`, and `application`.
The default order is `dependencies`, `snapshot-dependencies`, and `application`.
Content that is least likely to change should be added first, followed by layers that are more likely to change.
@ -149,7 +148,6 @@ The following example shows what the implicit layer configuration described abov
<layers>
<layer>dependencies</layer>
<layer>snapshot-dependencies</layer>
<layer>resources</layer>
<layer>application</layer>
</layers>
<libraries>
@ -165,14 +163,6 @@ The following example shows what the implicit layer configuration described abov
</layer-content>
</libraries>
<application>
<layer-content layer="resources">
<locations>
<include>META-INF/resources/**</include>
<include>resources/**</include>
<include>static/**</include>
<include>public/**</include>
</locations>
</layer-content>
<layer-content layer="application">
<locations>
<include>**</include>
@ -184,7 +174,7 @@ The following example shows what the implicit layer configuration described abov
Each `layer-content` element defines a strategy to include or exclude an entry of the jar in a layer.
When an entry matches a strategy, it is included in the layer and further strategies are ignored.
This is illustrated by the `dependencies` and `application` layers that have a "catch-all" include filter used to add any libraries or classes that were not processed by previous strategies.
This is illustrated by the `dependencies` layer that has a "catch-all" include filter used to add any libraries that were not processed by previous strategies.
The content of a `libraries` layer can be customized using filters to `include` or `exclude` based on the dependency coordinates.
The format is `groupId:artifactId[:version]`.

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