Add a script-running housekeeping template, and schedule running of W…

housekeeping/build.gradle

@@ -30,6 +30,7 @@ dependencies {
     // XL dependencies
     implementation(project(':whelk-core'))
     implementation(project(':server-common'))
+    implementation(project(':whelktool'))
 
     // Groovy
     implementation "org.codehaus.groovy:groovy:${groovyVersion}"

housekeeping/src/main/groovy/whelk/housekeeping/ScriptRunner.java

@@ -0,0 +1,82 @@
+package whelk.housekeeping;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import whelk.Whelk;
+import whelk.housekeeping.HouseKeeper;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class ScriptRunner extends HouseKeeper {
+    private String status = "OK";
+    private final String scriptName;
+    private final String schedule;
+    private final Logger logger = LogManager.getLogger(this.getClass());
+    private final Whelk premadeWhelk;
+
+    public ScriptRunner(Whelk premadeWhelk, String scriptName, String schedule) {
+        this.scriptName = scriptName;
+        this.schedule = schedule;
+        this.premadeWhelk = premadeWhelk;
+    }
+
+    public String getName() {
+        return "Scriptrunner: " + scriptName;
+    }
+
+    public String getStatusDescription() {
+        return status;
+    }
+
+    public String getCronSchedule() {
+        return schedule;
+    }
+
+    public void trigger() {
+        try {
+            InputStream scriptStream = ScriptRunner.class.getClassLoader().getResourceAsStream(scriptName);
+            String scriptText = IOUtils.toString(new InputStreamReader(scriptStream));
+
+            Path scriptWorkingDir = Files.createTempDirectory("housekeeping_script_execution");
+            Path scriptFilePath = scriptWorkingDir.resolve("script.groovy");
+            Path reportPath = scriptWorkingDir.resolve("report");
+            Files.createDirectories(reportPath);
+
+            Files.writeString(scriptFilePath, scriptText);
+            String[] args =
+                    {
+                            "--allow-loud",
+                            "--report",
+                            reportPath.toString(),
+                            scriptFilePath.toString(),
+                    };
+            whelk.datatool.WhelkTool.main2(args, premadeWhelk);
+
+            Path errorLogPath = reportPath.resolve("ERRORS.txt");
+            if (Files.size(errorLogPath) > 0) {
+                String firstError = "[could not read]";
+                try (BufferedReader errorLogReader = Files.newBufferedReader(errorLogPath)) {
+                    firstError = errorLogReader.readLine();
+                }
+                String errorMessage = "Execution of script (" + scriptName +  ") resulted in non-zero size ERRORS.txt, first line of which is: "
+                        + firstError + "\nSee: " + errorLogPath;
+                logger.error(errorMessage);
+                status = errorMessage;
+            } else {
+                status = "OK";
+            }
+
+        } catch (Exception e) {
+            logger.error("Failed script (" + scriptName + ") execution attempt: ", e);
+            throw new RuntimeException(e);
+        }
+
+    }
+}

housekeeping/src/main/groovy/whelk/housekeeping/WebInterface.groovy

@@ -44,10 +44,12 @@ public class WebInterface extends HttpServlet {
                 // Automatic generation is disabled for now, may need design changes approved before activation.
                 //new NotificationGenerator(whelk),
                 //new NotificationSender(whelk),
+
                 new InquirySender(whelk),
                 new NotificationCleaner(whelk),
                 new ImageLinker(whelk),
                 new ExportSizePredictor(whelk),
+                new ScriptRunner(whelk, "wikidatalinking.groovy", "0 19 10 1,3,5,7,9,11 *"),
         ]
 
         houseKeepers.each { hk ->