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Ensure empty layers are written to the index file

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Update the `LayersIndex` class to ensure that layers that do not contain
content are still written.

Closes gh-20858
This commit is contained in:
Phillip Webb
2020-04-06 17:29:59 -07:00
parent ef9611e30e
commit 464c15e52c
4 changed files with 5 additions and 3 deletions
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4
spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/LayersIndex.java
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@@ -96,8 +96,8 @@ public class LayersIndex {
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out, StandardCharsets.UTF_8));
for (Layer layer : this.layers) {
List<String> names = index.get(layer);
if (names != null && !names.isEmpty()) {
writer.write("- \"" + layer + "\":\n");
writer.write("- \"" + layer + "\":\n");
if (names != null) {
for (String name : names) {
writer.write(" - \"" + name + "\"\n");
}