(control, WIP) MQFSM and ProcessService are sitting in a tree

We're spawning processes from the MSFSM in control service now!

build.gradle

@@ -9,14 +9,29 @@ version 'SNAPSHOT'
 compileJava.options.encoding = "UTF-8"
 compileTestJava.options.encoding = "UTF-8"
 
-task dist(type: Copy) {
+tasks.register('dist', Copy) {
     from subprojects.collect { it.tasks.withType(Tar) }
     into "$buildDir/dist"
-}
 
+    doLast {
+        copy {
+            from tarTree("$buildDir/dist/converter-process.tar")
+            into "$projectDir/run/dist/"
+        }
+        copy {
+            from tarTree("$buildDir/dist/crawler-process.tar")
+            into "$projectDir/run/dist/"
+        }
+        copy {
+            from tarTree("$buildDir/dist/loader-process.tar")
+            into "$projectDir/run/dist/"
+        }
+    }
+}
 idea {
     module {
         excludeDirs.add(file("$projectDir/run/model"))
+        excludeDirs.add(file("$projectDir/run/dist"))
         excludeDirs.add(file("$projectDir/run/samples"))
         excludeDirs.add(file("$projectDir/run/db"))
         excludeDirs.add(file("$projectDir/run/logs"))

code/common/message-queue/src/main/java/nu/marginalia/mqsm/StateMachine.java

@@ -103,6 +103,19 @@ public class StateMachine {
         smOutbox.notify(transition.state(), transition.message());
     }
 
+    /** Initialize the state machine. */
+    public void init(String jsonEncodedArgument) throws Exception {
+        var transition = StateTransition.to("INITIAL", jsonEncodedArgument);
+
+        synchronized (this) {
+            this.state = allStates.get(transition.state());
+            notifyAll();
+        }
+
+        smInbox.start();
+        smOutbox.notify(transition.state(), transition.message());
+    }
+
     /** Resume the state machine from the last known state. */
     public void resume() throws Exception {
 

code/processes/loading-process/src/main/java/nu/marginalia/loading/LoaderMain.java

@@ -108,9 +108,7 @@ public class LoaderMain {
 
         try {
             AtomicInteger loadTotal = new AtomicInteger();
-            WorkLog.readLog(logFile, entry -> {
+            WorkLog.readLog(logFile, entry -> loadTotal.incrementAndGet());
-                loadTotal.incrementAndGet();
-            });
             LoaderMain.loadTotal = loadTotal.get();
 
             AtomicInteger loaded = new AtomicInteger();

code/processes/loading-process/src/main/java/nu/marginalia/loading/LoaderModule.java

@@ -28,7 +28,7 @@ public class LoaderModule extends AbstractModule {
         bind(ServiceDescriptors.class).toInstance(SearchServiceDescriptors.descriptors);
         bind(ProcessConfiguration.class).toInstance(new ProcessConfiguration("loader", 0, UUID.randomUUID()));
 
-        bind(Gson.class).toInstance(createGson());
+        bind(Gson.class).toProvider(this::createGson);
 
         bind(Path.class).annotatedWith(Names.named("local-index-path")).toInstance(Path.of(System.getProperty("local-index-path", "/vol")));
         bind(LanguageModels.class).toInstance(WmsaHome.getLanguageModels());

code/services-satellite/control-service/src/main/java/nu/marginalia/control/ControlMain.java

@@ -21,6 +21,7 @@ public class ControlMain extends MainClass {
 
         Injector injector = Guice.createInjector(
                 new DatabaseModule(),
+                new ControlProcessModule(),
                 new ConfigurationModule(SearchServiceDescriptors.descriptors, ServiceId.Control));
 
         injector.getInstance(ControlMain.class);

code/services-satellite/control-service/src/main/java/nu/marginalia/control/ControlProcessModule.java

@@ -0,0 +1,15 @@
+package nu.marginalia.control;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Module;
+import com.google.inject.name.Names;
+
+import java.nio.file.Path;
+
+public class ControlProcessModule extends AbstractModule {
+    @Override
+    protected void configure() {
+        String dist = System.getProperty("distPath", System.getProperty("WMSA_HOME") + "/dist/current");
+        bind(Path.class).annotatedWith(Names.named("distPath")).toInstance(Path.of(dist));
+    }
+}

code/services-satellite/control-service/src/main/java/nu/marginalia/control/ControlService.java

@@ -5,10 +5,7 @@ import com.google.inject.Inject;
 import nu.marginalia.client.ServiceMonitors;
 import nu.marginalia.control.model.ControlProcess;
 import nu.marginalia.control.process.ControlProcesses;
-import nu.marginalia.control.svc.EventLogService;
+import nu.marginalia.control.svc.*;
-import nu.marginalia.control.svc.HeartbeatService;
-import nu.marginalia.control.svc.MessageQueueMonitorService;
-import nu.marginalia.control.svc.MessageQueueViewService;
 import nu.marginalia.model.gson.GsonFactory;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.renderer.MustacheRenderer;
@@ -22,6 +19,7 @@ import spark.Response;
 import spark.Spark;
 
 import java.io.IOException;
+import java.nio.file.Path;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
@@ -51,7 +49,8 @@ public class ControlService extends Service {
                           ControlProcesses controlProcesses,
                           StaticResources staticResources,
                           MessageQueueViewService messageQueueViewService,
-                          MessageQueueMonitorService messageQueueMonitorService
+                          MessageQueueMonitorService messageQueueMonitorService,
+                          ProcessService processService
                       ) throws IOException {
 
         super(params);
@@ -84,6 +83,11 @@ public class ControlService extends Service {
             controlProcesses.start(ControlProcess.REPARTITION_REINDEX);
             return "OK";
         });
+        // TODO: This should be a POST
+        Spark.get("/public/reconvert", (req, rsp) -> {
+            controlProcesses.start(ControlProcess.RECONVERT_LOAD, "/samples/crawl-blogs/plan.yaml");
+            return "OK";
+        });
 
         Spark.get("/public/:resource", this::serveStatic);
 

code/services-satellite/control-service/src/main/java/nu/marginalia/control/model/ControlProcess.java

@@ -1,7 +1,8 @@
 package nu.marginalia.control.model;
 
 public enum ControlProcess {
-    REPARTITION_REINDEX;
+    REPARTITION_REINDEX,
+    RECONVERT_LOAD;
 
     public String id() {
         return "fsm:" + name().toLowerCase();

code/services-satellite/control-service/src/main/java/nu/marginalia/control/process/ControlProcesses.java

@@ -1,8 +1,10 @@
 package nu.marginalia.control.process;
 
+import com.google.gson.Gson;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import nu.marginalia.control.model.ControlProcess;
+import nu.marginalia.model.gson.GsonFactory;
 import nu.marginalia.mq.persistence.MqPersistence;
 import nu.marginalia.mqsm.StateMachine;
 import nu.marginalia.mqsm.graph.AbstractStateGraph;
@@ -17,17 +19,21 @@ import java.util.UUID;
 public class ControlProcesses {
     private final MqPersistence persistence;
     private final ServiceEventLog eventLog;
+    private final Gson gson;
     public Map<ControlProcess, StateMachine> stateMachines = new HashMap<>();
 
     @Inject
     public ControlProcesses(MqPersistence persistence,
+                            GsonFactory gsonFactory,
                             BaseServiceParams baseServiceParams,
-                            RepartitionReindexProcess repartitionReindexProcess
+                            RepartitionReindexProcess repartitionReindexProcess,
+                            ReconvertAndLoadProcess reconvertAndLoadProcess
                             ) {
         this.persistence = persistence;
         this.eventLog = baseServiceParams.eventLog;
-
+        this.gson = gsonFactory.get();
         register(ControlProcess.REPARTITION_REINDEX, repartitionReindexProcess);
+        register(ControlProcess.RECONVERT_LOAD, reconvertAndLoadProcess);
     }
 
     private void register(ControlProcess process, AbstractStateGraph graph) {
@@ -48,6 +54,12 @@ public class ControlProcesses {
         stateMachines.get(process).init();
     }
 
+    public <T> void start(ControlProcess process, Object arg) throws Exception {
+        eventLog.logEvent("FSM-START", process.id());
+
+        stateMachines.get(process).init(gson.toJson(arg));
+    }
+
     public void resume(ControlProcess process) throws Exception {
         eventLog.logEvent("FSM-RESUME", process.id());
         stateMachines.get(process).resume();

code/services-satellite/control-service/src/main/java/nu/marginalia/control/process/ReconvertAndLoadProcess.java

@@ -0,0 +1,77 @@
+package nu.marginalia.control.process;
+
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
+import nu.marginalia.control.svc.ProcessService;
+import nu.marginalia.index.client.IndexClient;
+import nu.marginalia.index.client.IndexMqEndpoints;
+import nu.marginalia.mq.MqMessageState;
+import nu.marginalia.mq.outbox.MqOutbox;
+import nu.marginalia.mqsm.StateFactory;
+import nu.marginalia.mqsm.graph.AbstractStateGraph;
+import nu.marginalia.mqsm.graph.GraphState;
+import nu.marginalia.mqsm.graph.ResumeBehavior;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+
+@Singleton
+public class ReconvertAndLoadProcess extends AbstractStateGraph {
+
+    // STATES
+
+    private static final String INITIAL = "INITIAL";
+    private static final String RECONVERT = "RECONVERT";
+    private static final String LOAD = "LOAD";
+    private static final String MOVE_INDEX_FILES = "MOVE_INDEX_FILES";
+    private static final String END = "END";
+    private final ProcessService processService;
+
+
+    @Inject
+    public ReconvertAndLoadProcess(StateFactory stateFactory, ProcessService processService) {
+        super(stateFactory);
+        this.processService = processService;
+    }
+
+    @GraphState(name = INITIAL, next = RECONVERT)
+    public String init(String crawlJob) throws Exception {
+        Path path = Path.of(crawlJob);
+
+        if (!Files.exists(path)) {
+            error("Bad crawl job path");
+        }
+
+        Files.deleteIfExists(path.getParent().resolve("process/process.log"));
+
+        return path.toString();
+    }
+
+    @GraphState(name = RECONVERT, next = LOAD, resume = ResumeBehavior.RETRY)
+    public String reconvert(String crawlJob) throws Exception {
+        if (!processService.trigger(ProcessService.ProcessId.CONVERTER, Path.of(crawlJob)))
+            error();
+
+        return crawlJob;
+    }
+
+    @GraphState(name = LOAD, next = MOVE_INDEX_FILES, resume = ResumeBehavior.RETRY)
+    public void load(String crawlJob) throws Exception {
+        if (!processService.trigger(ProcessService.ProcessId.LOADER, Path.of(crawlJob)))
+            error();
+    }
+
+    @GraphState(name = MOVE_INDEX_FILES, next = END, resume = ResumeBehavior.ERROR)
+    public String moveIndexFiles(String crawlJob) throws Exception {
+        Path indexData = Path.of("/vol/index.dat");
+        Path indexDest = Path.of("/vol/iw/0/page-index.dat");
+
+        if (!Files.exists(indexData))
+            error("Index data not found");
+
+        Files.move(indexData, indexDest, StandardCopyOption.REPLACE_EXISTING);
+
+        return crawlJob;
+    }
+}

code/services-satellite/control-service/src/main/java/nu/marginalia/control/svc/HeartbeatService.java

@@ -35,7 +35,7 @@ public class HeartbeatService {
                         rs.getString("SERVICE_NAME"),
                         rs.getString("SERVICE_BASE"),
                         trimUUID(rs.getString("INSTANCE")),
-                        rs.getInt("TSDIFF") / 1000.,
+                        rs.getLong("TSDIFF") / 1000.,
                         rs.getBoolean("ALIVE")
                 ));
             }
@@ -63,7 +63,7 @@ public class HeartbeatService {
                         rs.getString("PROCESS_NAME"),
                         rs.getString("PROCESS_BASE"),
                         trimUUID(rs.getString("INSTANCE")),
-                        rs.getInt("TSDIFF") / 1000.,
+                        rs.getLong("TSDIFF") / 1000.,
                         rs.getInt("PROGRESS"),
                         rs.getString("STATUS")
                 ));

code/services-satellite/control-service/src/main/java/nu/marginalia/control/svc/ProcessService.java

@@ -0,0 +1,127 @@
+package nu.marginalia.control.svc;
+
+import com.google.inject.name.Named;
+import nu.marginalia.service.control.ServiceEventLog;
+import nu.marginalia.service.server.BaseServiceParams;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import spark.utils.IOUtils;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Singleton
+public class ProcessService {
+    private final Logger logger = LoggerFactory.getLogger(getClass());
+    private final ServiceEventLog eventLog;
+    private final Path distPath;
+
+    private final ConcurrentHashMap<ProcessId, Process> processes = new ConcurrentHashMap<>();
+
+    public enum ProcessId {
+        CRAWLER("crawler-process/bin/crawler-process"),
+        CONVERTER("converter-process/bin/converter-process"),
+        LOADER("loader-process/bin/loader-process");
+
+        public final String path;
+        ProcessId(String path) {
+            this.path = path;
+        }
+    };
+
+    @Inject
+    public ProcessService(BaseServiceParams params,
+                          @Named("distPath") Path distPath) {
+        this.eventLog = params.eventLog;
+        this.distPath = distPath;
+    }
+
+    public boolean trigger(ProcessId processId, Path plan) throws Exception {
+        String processPath = processPath(processId);
+        String[] args = new String[] {
+                processPath,
+                plan.toString()
+        };
+        String[] env = env(plan);
+
+        Process process;
+
+        if (!Files.exists(Path.of(processPath))) {
+            logger.error("Process not found: {}", processPath);
+            return false;
+        }
+        if (!Files.exists(plan)) {
+            logger.error("Plan not found: {}", processPath);
+            return false;
+        }
+
+        logger.info("Starting process: {}", processId + ": " + Arrays.toString(args) + " // " + Arrays.toString(env));
+        synchronized (processes) {
+            if (processes.containsKey(processId)) return false;
+            process = Runtime.getRuntime().exec(args, env);
+            processes.put(processId, process);
+        }
+
+        try (var es = new BufferedReader(new InputStreamReader(process.getErrorStream()));
+             var os = new BufferedReader(new InputStreamReader(process.getInputStream()))
+        ) {
+            eventLog.logEvent("PROCESS-STARTED", processId.toString());
+            process.onExit().whenComplete((p,t) -> eventLog.logEvent("PROCESS-EXIT", processId.toString()));
+
+            while (process.isAlive()) {
+                if (es.ready())
+                    logger.warn("{}:{}", processId, es.readLine());
+                if (os.ready())
+                    logger.debug("{}:{}", processId, os.readLine());
+            }
+
+            return 0 == process.waitFor();
+        }
+        finally {
+            processes.remove(processId);
+        }
+
+
+    }
+
+    public boolean isRunning(ProcessId processId) {
+        return processes.containsKey(processId);
+    }
+
+    public boolean kill(ProcessId processId) {
+        Process process = processes.get(processId);
+        if (process == null) return false;
+
+        eventLog.logEvent("PROCESS-KILL", processId.toString());
+        process.destroy();
+        processes.remove(processId);
+
+        return true;
+    }
+
+    private String processPath(ProcessId id) {
+        return distPath.resolve(id.path).toString();
+    }
+
+    private String[] env(Path plan) {
+
+        Map<String, String> opts = new HashMap<>();
+        String WMSA_HOME = System.getenv("WMSA_HOME");
+        if (WMSA_HOME == null || WMSA_HOME.isBlank()) {
+            WMSA_HOME = "/var/lib/wmsa";
+        }
+        opts.put("WMSA_HOME", WMSA_HOME);
+        opts.put("JAVA_HOME", System.getenv("JAVA_HOME"));
+        opts.put("JAVA_OPTS", "-Dcrawl.rootDirRewrite=/crawl:" + plan.getParent().toString());
+
+        return opts.entrySet().stream().map(e -> e.getKey() + "=" + e.getValue()).toArray(String[]::new);
+    }
+}

docker-compose.yml

@@ -6,6 +6,8 @@ x-svc: &service
     - conf:/wmsa/conf:ro
     - model:/wmsa/model
     - data:/wmsa/data
+    - dist:/dist
+    - samples:/samples
     - logs:/var/log/wmsa
   networks:
     - wmsa
@@ -144,3 +146,15 @@ volumes:
       type: none
       o: bind
       device: run/data
+  dist:
+    driver: local
+    driver_opts:
+      type: none
+      o: bind
+      device: run/dist
+  samples:
+    driver: local
+    driver_opts:
+      type: none
+      o: bind
+      device: run/samples

run/env/service.env

@@ -1 +1,2 @@
 WMSA_HOME=run/
+CONTROL_SERVICE_OPTS="-DdistPath=/dist"