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Generate changelogs
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| //usr/bin/env jbang "$0" "$@" ; exit $? | |
| //DEPS com.google.code.gson:gson:2.8.6 | |
| import java.io.InputStream; | |
| import java.io.InputStreamReader; | |
| import java.io.Reader; | |
| import java.net.URL; | |
| import java.net.URLConnection; | |
| import java.util.ArrayList; | |
| import java.util.LinkedHashMap; | |
| import java.util.List; | |
| import java.util.Map; | |
| import java.util.Objects; | |
| import java.util.stream.Stream; | |
| import com.google.gson.Gson; | |
| /** | |
| * Generate changelog for a release. Requires | |
| * <a href="https://github.com/maxandersen/jbang">j'bang</a> to be installed. | |
| * <p> | |
| * Execute with: | |
| * <ul> | |
| * <li><code>jbang GenerateChangelog.java repo1/milestone/number1 repoN/milestone/numberN ...</code></li> | |
| * <li>eg. <code>jbang GenerateChangelog.java | |
| * https://github.com/eclipse/lemminx/milestone/14 | |
| * https://github.com/eclipse/lemminx/milestone/13 | |
| * | |
| * </ul> | |
| * </p> | |
| */ | |
| public class GenerateChangelog { | |
| private static final Map<String, List<Issue>> labeledIssues = new LinkedHashMap<>(); | |
| public static void main(String[] args) throws Exception { | |
| for (String repo : args) { | |
| String url = repo.replace("https://github.com/", "https://api.github.com/repos/") | |
| .replace("/milestone/", "/issues?state=closed&milestone="); | |
| fillIssues(url); | |
| } | |
| // Performance | |
| generateIssues("performance -", labeledIssues.get("performance")); | |
| // enhancement | |
| generateIssues("enhancement -", labeledIssues.get("enhancement")); | |
| // Bug Fixes | |
| generateIssues("bug fix -", labeledIssues.get("bug")); | |
| // Performance | |
| generateIssues("build -", labeledIssues.get("build")); | |
| // Other | |
| generateIssues("other -", labeledIssues.get("other")); | |
| System.exit(0); | |
| } | |
| private static void generateIssues(String title, List<Issue> list) { | |
| if (list == null) { | |
| return; | |
| } | |
| for (Issue issue : list) { | |
| String url = issue.html_url; | |
| String number = url.substring(url.lastIndexOf("/") + 1); | |
| String line = " * " + title + " " + issue.title + ". See [#" + number + "](" + url + ")."; | |
| generateLine(line); | |
| } | |
| } | |
| private static void generateLine(String line) { | |
| System.out.println(line); | |
| } | |
| private static void fillIssues(String url) throws Exception { | |
| int page = 1; | |
| boolean hasMore = true; | |
| do { | |
| String pageUrl = url+"&page="+(page++); | |
| System.out.println("Fetching issues from " + pageUrl); | |
| URL u = new URL(pageUrl); | |
| URLConnection connection = u.openConnection(); | |
| try (InputStream in = connection.getInputStream()) { | |
| Reader reader = new InputStreamReader(in, "UTF-8"); | |
| Issue[] issues = new Gson().fromJson(reader, Issue[].class); | |
| hasMore = issues.length == 30; | |
| Stream.of(issues).filter(Issue::isValid).forEach(i -> { | |
| labeledIssues.computeIfAbsent(i.getMainLabel(), k -> new ArrayList<>()).add(i); | |
| }); | |
| } | |
| } while (hasMore); | |
| } | |
| static class Label { | |
| public String name; | |
| } | |
| static class Issue { | |
| private static String[] SIGNIFICANT_LABELS = { "build", "enhancement", "bug", "performance", "other" }; | |
| String html_url; | |
| String title; | |
| Label[] labels; | |
| public String getMainLabel() { | |
| String mainLabel = findLabel(SIGNIFICANT_LABELS); | |
| return mainLabel == null ? "other" : mainLabel; | |
| } | |
| public String findLabel(String... names) { | |
| if (labels != null) { | |
| for (Label label : labels) { | |
| for (String name : names) { | |
| if (Objects.equals(label.name, name)) { | |
| return name; | |
| } | |
| } | |
| } | |
| } | |
| return null; | |
| } | |
| public boolean isValid() { | |
| return findLabel("invalid") == null; | |
| } | |
| } | |
| } |
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