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Check if matching version is already downloaded

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Andres Almiray 2023-05-24 20:16:06 +02:00
parent f2226e009e
commit ab17acedd9
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GPG key ID: CCC55C5167419ADB
1 changed files with 38 additions and 7 deletions
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45
get_jreleaser.java
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@ -1,10 +1,15 @@
//JAVA 11+
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
import static java.nio.file.StandardOpenOption.CREATE;
import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
import static java.nio.file.StandardOpenOption.WRITE;
class get_jreleaser {
public static void main(String... args) throws Exception {
@ -27,15 +32,27 @@ class get_jreleaser {
System.exit(1);
}
var versionFile = Path.of("JRELEASER_VERSION");
var cachedVersion = "";
if (Files.exists(versionFile)) {
try {
cachedVersion = Files.readString(versionFile).trim();
} catch (IOException e) {
System.out.printf("☠️ JReleaser %s could not be resolved%n", version);
e.printStackTrace();
System.exit(1);
}
}
// resolve latest to a tagged release
if ("latest".equalsIgnoreCase(version)) {
var url = "https://jreleaser.org/releases/latest/download/VERSION";
var file = Path.of("JRELEASER_VERSION");
try (var stream = new URL(url).openStream()) {
System.out.printf("✅ Located version marker%n");
Files.copy(stream, file, StandardCopyOption.REPLACE_EXISTING);
version = new String(Files.readAllBytes(file)).trim();
Files.copy(stream, versionFile, REPLACE_EXISTING);
version = new String(Files.readAllBytes(versionFile)).trim();
System.out.printf("✅ JReleaser latest resolves to %s%n", version);
} catch (FileNotFoundException e) {
System.out.printf("❌ JReleaser %s not found%n", version);
@ -46,18 +63,32 @@ class get_jreleaser {
e.printStackTrace();
System.exit(1);
}
} else {
try {
Files.writeString(versionFile, version, CREATE, TRUNCATE_EXISTING, WRITE);
} catch (IOException e) {
System.out.printf("☠️ JReleaser %s could not be resolved%n", version);
e.printStackTrace();
System.exit(1);
}
}
var jreleaserJar = Path.of("jreleaser-cli.jar");
if (version.equals(cachedVersion) && Files.exists(jreleaserJar)) {
// assume jreleaserJar has the expected version for now
System.out.printf("✅ JReleaser %s already downloaded%n", version);
System.exit(0);
}
// setup the actual download
var tag = !"early-access".equals(version) ? "v" + version : version;
var url = "https://github.com/jreleaser/jreleaser/releases/download/" + tag + "/jreleaser-tool-provider-" + version + ".jar";
var file = Path.of("jreleaser-cli.jar");
try (var stream = new URL(url).openStream()) {
System.out.printf("✅ Located JReleaser %s%n", version);
System.out.printf("⬇️ Downloading %s%n", url);
var size = Files.copy(stream, file, StandardCopyOption.REPLACE_EXISTING);
System.out.printf("%s << copied %d bytes%n", file, size);
var size = Files.copy(stream, jreleaserJar, REPLACE_EXISTING);
System.out.printf("%s << copied %d bytes%n", jreleaserJar, size);
System.out.printf("✅ JReleaser installed successfully%n");
} catch (FileNotFoundException e) {
System.out.printf("❌ JReleaser %s not found%n", version);