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Provide error message when plugin id is missing 

Today when executing the install plugin command without a plugin id, we
end up throwing an NPE because the plugin id is null yet we just keep
going (ultimatley we try to lookup the null plugin id in a set, the
direct cause of the NPE). This commit modifies the install command so
that a missing plugin id is detected and help is provided to the user.

Relates #20660
This commit is contained in:
Jason Tedor 2016-09-26 08:09:15 -04:00 committed by GitHub
parent 560fba1b28
commit a6e33494ab
2 changed files with 9 additions and 0 deletions
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3
core/src/main/java/org/elasticsearch/plugins/InstallPluginCommand.java
View File

@ -192,6 +192,9 @@ class InstallPluginCommand extends SettingCommand {
// pkg private for testing
void execute(Terminal terminal, String pluginId, boolean isBatch, Map<String, String> settings) throws Exception {
if (pluginId == null) {
throw new UserException(ExitCodes.USAGE, "plugin id is required");
}
final Environment env = InternalSettingsPreparer.prepareEnvironment(Settings.EMPTY, terminal, settings);
// TODO: remove this leniency!! is it needed anymore?
if (Files.exists(env.pluginsFile()) == false) {

6
qa/evil-tests/src/test/java/org/elasticsearch/plugins/InstallPluginCommandTests.java
View File

@ -291,6 +291,12 @@ public class InstallPluginCommandTests extends ESTestCase {
}
}
public void testMissingPluginId() throws IOException {
final Tuple<Path, Environment> env = createEnv(fs, temp);
final UserException e = expectThrows(UserException.class, () -> installPlugin(null, env.v1()));
assertTrue(e.getMessage(), e.getMessage().contains("plugin id is required"));
}
public void testSomethingWorks() throws Exception {
Tuple<Path, Environment> env = createEnv(fs, temp);
Path pluginDir = createPluginDir(temp);