Added option cpusetcpus

Author: Alathreon

JShellAPI/src/main/java/org/togetherjava/jshellapi/Config.java

@@ -1,6 +1,7 @@
 package org.togetherjava.jshellapi;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.lang.Nullable;
 
 @ConfigurationProperties("jshellapi")
 public record Config(
@@ -12,6 +13,7 @@ public record Config(
         long maxAliveSessions,
         int dockerMaxRamMegaBytes,
         double dockerCPUsUsage,
+        @Nullable String dockerCPUSetCPUs,
         long schedulerSessionKillScanRateSeconds,
         long dockerResponseTimeout,
         long dockerConnectionTimeout) {
@@ -24,6 +26,8 @@ public record Config(
         if(maxAliveSessions <= 0) throw new IllegalArgumentException("Invalid value " + maxAliveSessions);
         if(dockerMaxRamMegaBytes <= 0) throw new IllegalArgumentException("Invalid value " + dockerMaxRamMegaBytes);
         if(dockerCPUsUsage <= 0) throw new IllegalArgumentException("Invalid value " + dockerCPUsUsage);
+        if(dockerCPUSetCPUs != null && !dockerCPUSetCPUs.matches("[1-9]?\\d([-,]\\d?\\d)?"))
+            throw new IllegalArgumentException("Invalid value " + dockerCPUSetCPUs);
         if(schedulerSessionKillScanRateSeconds <= 0) throw new IllegalArgumentException("Invalid value " + schedulerSessionKillScanRateSeconds);
         if(dockerResponseTimeout <= 0) throw new IllegalArgumentException("Invalid value " + dockerResponseTimeout);
         if(dockerConnectionTimeout <= 0) throw new IllegalArgumentException("Invalid value " + dockerConnectionTimeout);

JShellAPI/src/main/java/org/togetherjava/jshellapi/service/DockerService.java

@@ -10,6 +10,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.DisposableBean;
+import org.springframework.lang.Nullable;
 import org.springframework.stereotype.Service;
 import org.togetherjava.jshellapi.Config;
 
@@ -52,7 +53,7 @@ private void cleanupLeftovers(UUID currentId) {
     }
 
     public String spawnContainer(
-            long maxMemoryMegs, long cpus, String name, Duration evalTimeout, long sysoutLimit
+            long maxMemoryMegs, long cpus, @Nullable String cpuSetCpus, String name, Duration evalTimeout, long sysoutLimit
     ) throws InterruptedException {
         String imageName = "togetherjava.org:5001/togetherjava/jshellwrapper";
         boolean presentLocally = client.listImagesCmd()
@@ -82,6 +83,7 @@ public String spawnContainer(
                                 .withReadonlyRootfs(true)
                                 .withMemory(maxMemoryMegs * 1024 * 1024)
                                 .withCpuCount(cpus)
+                                .withCpusetCpus(cpuSetCpus)
                 )
                 .withStdinOpen(true)
                 .withAttachStdin(true)

JShellAPI/src/main/java/org/togetherjava/jshellapi/service/JShellService.java

@@ -3,6 +3,7 @@
 import org.apache.tomcat.util.http.fileupload.util.Closeable;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.lang.Nullable;
 import org.togetherjava.jshellapi.dto.*;
 import org.togetherjava.jshellapi.exceptions.DockerException;
 
@@ -29,7 +30,7 @@ public class JShellService implements Closeable {
     private final DockerService dockerService;
     private final int startupScriptSize;
 
-    public JShellService(DockerService dockerService, JShellSessionService sessionService, String id, long timeout, boolean renewable, long evalTimeout, long evalTimeoutValidationLeeway, int sysOutCharLimit, int maxMemory, double cpus, String startupScript) throws DockerException {
+    public JShellService(DockerService dockerService, JShellSessionService sessionService, String id, long timeout, boolean renewable, long evalTimeout, long evalTimeoutValidationLeeway, int sysOutCharLimit, int maxMemory, double cpus, @Nullable String cpuSetCpus, String startupScript) throws DockerException {
         this.dockerService = dockerService;
         this.sessionService = sessionService;
         this.id = id;
@@ -46,6 +47,7 @@ public JShellService(DockerService dockerService, JShellSessionService sessionSe
             String containerId = dockerService.spawnContainer(
                     maxMemory,
                     (long) Math.ceil(cpus),
+                    cpuSetCpus,
                     containerName(),
                     Duration.ofSeconds(evalTimeout),
                     sysOutCharLimit

JShellAPI/src/main/java/org/togetherjava/jshellapi/service/JShellSessionService.java

@@ -95,6 +95,7 @@ private synchronized JShellService createSession(SessionInfo sessionInfo) throws
                 sessionInfo.sysOutCharLimit(),
                 config.dockerMaxRamMegaBytes(),
                 config.dockerCPUsUsage(),
+                config.dockerCPUSetCPUs(),
                 startupScriptsService.get(sessionInfo.startupScriptId()));
         jshellSessions.put(sessionInfo.id(), service);
         return service;

JShellAPI/src/main/resources/application.properties

@@ -10,6 +10,7 @@ jshellapi.maxAliveSessions=10
 # Docker limits config
 jshellapi.dockerMaxRamMegaBytes=128
 jshellapi.dockerCPUsUsage=0.5
+jshellapi.dockerCPUSetCPUs=0
 
 # Internal config
 jshellapi.schedulerSessionKillScanRateSeconds=60