Revert "- Reduce usage of guava."

9 files changed, 71 insertions, 77 deletions

diff --git a/model-evaluation/pom.xml b/model-evaluation/pom.xml
index c0600872666..caf28199c3d 100644
--- a/model-evaluation/pom.xml
+++ b/model-evaluation/pom.xml
@@ -74,6 +74,11 @@
       <scope>provided</scope>
     </dependency>
     <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
       <groupId>org.lz4</groupId>
       <artifactId>lz4-java</artifactId>
     </dependency>
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
index 1d3da73a509..6af33e29e62 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/FunctionEvaluator.java
@@ -101,11 +101,9 @@ public class FunctionEvaluator {
     }
 
     public Tensor evaluate() {
-        function.argumentTypes().keySet().stream().sorted()
-                .forEach(name -> {
-                            var type = function.argumentTypes().get(name);
-                            checkArgument(name, type);
-                        });
+        for (Map.Entry<String, TensorType> argument : function.argumentTypes().entrySet()) {
+            checkArgument(argument.getKey(), argument.getValue());
+        }
         evaluated = true;
         evaluateOnnxModels();
         return function.getBody().evaluate(context).asTensor();
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
index 81325740218..d030108a17a 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/LazyArrayContext.java
@@ -1,7 +1,8 @@
 // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
 package ai.vespa.models.evaluation;
 
-import com.yahoo.lang.MutableInteger;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
 import com.yahoo.searchlib.rankingexpression.ExpressionFunction;
 import com.yahoo.searchlib.rankingexpression.Reference;
 import com.yahoo.searchlib.rankingexpression.evaluation.Context;
@@ -13,7 +14,6 @@ import com.yahoo.searchlib.rankingexpression.rule.CompositeNode;
 import com.yahoo.searchlib.rankingexpression.rule.ConstantNode;
 import com.yahoo.searchlib.rankingexpression.rule.ExpressionNode;
 import com.yahoo.searchlib.rankingexpression.rule.ReferenceNode;
-import com.yahoo.stream.CustomCollectors;
 import com.yahoo.tensor.Tensor;
 import com.yahoo.tensor.TensorType;
 
@@ -24,7 +24,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 /**
  * An array context supporting functions invocations implemented as lazy values.
@@ -152,16 +151,16 @@ public final class LazyArrayContext extends Context implements ContextIndex {
     private static class IndexedBindings {
 
         /** The mapping from variable name to index */
-        private final Map<String, Integer> nameToIndex;
+        private final ImmutableMap<String, Integer> nameToIndex;
 
         /** The names which needs to be bound externally when invoking this (i.e not constant or invocation */
-        private final Set<String> arguments;
+        private final ImmutableSet<String> arguments;
 
         /** The current values set */
         private final Value[] values;
 
         /** ONNX models indexed by rank feature that calls them */
-        private final Map<String, OnnxModel> onnxModels;
+        private final ImmutableMap<String, OnnxModel> onnxModels;
 
         /** The object instance which encodes "no value is set". The actual value of this is never used. */
         private static final Value missing = new DoubleValue(Double.NaN).freeze();
@@ -170,14 +169,14 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         private Value missingValue = new DoubleValue(Double.NaN).freeze();
 
 
-        private IndexedBindings(Map<String, Integer> nameToIndex,
+        private IndexedBindings(ImmutableMap<String, Integer> nameToIndex,
                                 Value[] values,
-                                Set<String> arguments,
-                                Map<String, OnnxModel> onnxModels) {
-            this.nameToIndex = Map.copyOf(nameToIndex);
+                                ImmutableSet<String> arguments,
+                                ImmutableMap<String, OnnxModel> onnxModels) {
+            this.nameToIndex = nameToIndex;
             this.values = values;
             this.arguments = arguments;
-            this.onnxModels = Map.copyOf(onnxModels);
+            this.onnxModels = onnxModels;
         }
 
         /**
@@ -196,14 +195,16 @@ public final class LazyArrayContext extends Context implements ContextIndex {
             Map<String, OnnxModel> onnxModelsInUse = new HashMap<>();
             extractBindTargets(function.getBody().getRoot(), referencedFunctions, bindTargets, arguments, onnxModels, onnxModelsInUse);
 
-            this.onnxModels = Map.copyOf(onnxModelsInUse);
-            this.arguments = Set.copyOf(arguments);
+            this.onnxModels = ImmutableMap.copyOf(onnxModelsInUse);
+            this.arguments = ImmutableSet.copyOf(arguments);
             values = new Value[bindTargets.size()];
             Arrays.fill(values, missing);
 
-            MutableInteger nextIndex = new MutableInteger(0);
-            nameToIndex = Map.copyOf(bindTargets.stream()
-                    .collect(CustomCollectors.toLinkedMap(name -> name, name -> nextIndex.next())));
+            int i = 0;
+            ImmutableMap.Builder<String, Integer> nameToIndexBuilder = new ImmutableMap.Builder<>();
+            for (String variable : bindTargets)
+                nameToIndexBuilder.put(variable, i++);
+            nameToIndex = nameToIndexBuilder.build();
 
             // 2. Bind the bind targets
             for (Constant constant : constants) {
@@ -251,7 +252,8 @@ public final class LazyArrayContext extends Context implements ContextIndex {
                 bindTargets.add(node.toString());
                 arguments.add(node.toString());
             }
-            else if (node instanceof CompositeNode cNode) {
+            else if (node instanceof CompositeNode) {
+                CompositeNode cNode = (CompositeNode)node;
                 for (ExpressionNode child : cNode.children())
                     extractBindTargets(child, functions, bindTargets, arguments, onnxModels, onnxModelsInUse);
             }
@@ -289,14 +291,16 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         }
 
         private Optional<String> getArgument(ExpressionNode node) {
-            if (node instanceof ReferenceNode reference) {
+            if (node instanceof ReferenceNode) {
+                ReferenceNode reference = (ReferenceNode) node;
                 if (reference.getArguments().size() > 0) {
                     if (reference.getArguments().expressions().get(0) instanceof ConstantNode) {
                         ExpressionNode constantNode = reference.getArguments().expressions().get(0);
                         return Optional.of(stripQuotes(constantNode.toString()));
                     }
-                    if (reference.getArguments().expressions().get(0) instanceof ReferenceNode refNode) {
-                        return Optional.of(refNode.getName());
+                    if (reference.getArguments().expressions().get(0) instanceof ReferenceNode) {
+                        ReferenceNode referenceNode = (ReferenceNode) reference.getArguments().expressions().get(0);
+                        return Optional.of(referenceNode.getName());
                     }
                 }
             }
@@ -312,17 +316,20 @@ public final class LazyArrayContext extends Context implements ContextIndex {
         }
 
         private boolean isFunctionReference(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode reference)) return false;
+            if ( ! (node instanceof ReferenceNode)) return false;
+            ReferenceNode reference = (ReferenceNode)node;
             return reference.getName().equals("rankingExpression") && reference.getArguments().size() == 1;
         }
 
         private boolean isOnnx(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode reference)) return false;
+            if ( ! (node instanceof ReferenceNode)) return false;
+            ReferenceNode reference = (ReferenceNode) node;
             return reference.getName().equals("onnx") || reference.getName().equals("onnxModel");
         }
 
         private boolean isConstant(ExpressionNode node) {
-            if ( ! (node instanceof ReferenceNode reference)) return false;
+            if ( ! (node instanceof ReferenceNode)) return false;
+            ReferenceNode reference = (ReferenceNode)node;
             return reference.getName().equals("constant") && reference.getArguments().size() == 1;
         }
 
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
index ffcfb5e9379..1ecec4108a3 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/Model.java
@@ -2,16 +2,15 @@
 package ai.vespa.models.evaluation;
 
 import com.yahoo.api.annotations.Beta;
+import com.google.common.collect.ImmutableMap;
 import com.yahoo.searchlib.rankingexpression.ExpressionFunction;
 import com.yahoo.searchlib.rankingexpression.evaluation.ContextIndex;
 import com.yahoo.searchlib.rankingexpression.evaluation.ExpressionOptimizer;
-import com.yahoo.stream.CustomCollectors;
 import com.yahoo.tensor.TensorType;
 
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.HashMap;
-import java.util.LinkedHashMap;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
@@ -36,10 +35,10 @@ public class Model {
     private final List<ExpressionFunction> publicFunctions;
 
     /** Instances of each usage of the above function, where variables (if any) are replaced by their bindings */
-    private final Map<FunctionReference, ExpressionFunction> referencedFunctions;
+    private final ImmutableMap<FunctionReference, ExpressionFunction> referencedFunctions;
 
     /** Context prototypes, indexed by function name (as all invocations of the same function share the same context prototype) */
-    private final Map<String, LazyArrayContext> contextPrototypes;
+    private final ImmutableMap<String, LazyArrayContext> contextPrototypes;
 
     private final ExpressionOptimizer expressionOptimizer = new ExpressionOptimizer();
 
@@ -47,9 +46,9 @@ public class Model {
     public Model(String name, Collection<ExpressionFunction> functions) {
         this(name,
              functions.stream().collect(Collectors.toMap(f -> FunctionReference.fromName(f.getName()), f -> f)),
-             Map.of(),
-             List.of(),
-             List.of());
+             Collections.emptyMap(),
+             Collections.emptyList(),
+             Collections.emptyList());
     }
 
     Model(String name,
@@ -60,7 +59,7 @@ public class Model {
         this.name = name;
 
         // Build context and add missing function arguments (missing because it is legal to omit scalar type arguments)
-        Map<String, LazyArrayContext> contextBuilder = new LinkedHashMap<>();
+        ImmutableMap.Builder<String, LazyArrayContext> contextBuilder = new ImmutableMap.Builder<>();
         for (Map.Entry<FunctionReference, ExpressionFunction> function : functions.entrySet()) {
             try {
                 LazyArrayContext context = new LazyArrayContext(function.getValue(), referencedFunctions, constants, onnxModels, this);
@@ -93,14 +92,19 @@ public class Model {
                 throw new IllegalArgumentException("Could not prepare an evaluation context for " + function, e);
             }
         }
-        this.contextPrototypes = Map.copyOf(contextBuilder);
+        this.contextPrototypes = contextBuilder.build();
         this.functions = List.copyOf(functions.values());
         this.publicFunctions = functions.values().stream()
                 .filter(f -> !f.getName().startsWith(INTERMEDIATE_OPERATION_FUNCTION_PREFIX)).toList();
 
         // Optimize functions
-        this.referencedFunctions = Map.copyOf(referencedFunctions.entrySet().stream()
-                .collect(CustomCollectors.toLinkedMap(f -> f.getKey(), f -> optimize(f.getValue(), contextPrototypes.get(f.getKey().functionName())))));
+        ImmutableMap.Builder<FunctionReference, ExpressionFunction> functionsBuilder = new ImmutableMap.Builder<>();
+        for (Map.Entry<FunctionReference, ExpressionFunction> function : referencedFunctions.entrySet()) {
+            ExpressionFunction optimizedFunction = optimize(function.getValue(),
+                                                            contextPrototypes.get(function.getKey().functionName()));
+            functionsBuilder.put(function.getKey(), optimizedFunction);
+        }
+        this.referencedFunctions = functionsBuilder.build();
     }
 
     /** Returns an optimized version of the given function */
@@ -138,7 +142,7 @@ public class Model {
     }
 
     /** Returns an immutable map of the referenced function instances of this */
-    Map<FunctionReference, ExpressionFunction> referencedFunctions() { return Map.copyOf(referencedFunctions); }
+    Map<FunctionReference, ExpressionFunction> referencedFunctions() { return referencedFunctions; }
 
     /** Returns the given referred function, or throws a IllegalArgumentException if it does not exist */
     ExpressionFunction requireReferencedFunction(FunctionReference reference) {
diff --git a/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java b/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
index 40a503e0212..88843fd99ab 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/evaluation/ModelsEvaluator.java
@@ -2,6 +2,7 @@
 package ai.vespa.models.evaluation;
 
 import com.yahoo.api.annotations.Beta;
+import com.google.common.collect.ImmutableMap;
 import com.yahoo.component.annotation.Inject;
 import com.yahoo.component.AbstractComponent;
 import com.yahoo.filedistribution.fileacquirer.FileAcquirer;
@@ -22,7 +23,7 @@ import java.util.Map;
 @Beta
 public class ModelsEvaluator extends AbstractComponent {
 
-    private final Map<String, Model> models;
+    private final ImmutableMap<String, Model> models;
 
     @Inject
     public ModelsEvaluator(RankProfilesConfig config,
@@ -42,7 +43,7 @@ public class ModelsEvaluator extends AbstractComponent {
     }
 
     public ModelsEvaluator(Map<String, Model> models) {
-        this.models = Map.copyOf(models);
+        this.models = ImmutableMap.copyOf(models);
     }
 
     /** Returns the models of this as an immutable map */
diff --git a/model-evaluation/src/main/java/ai/vespa/models/handler/ModelsEvaluationHandler.java b/model-evaluation/src/main/java/ai/vespa/models/handler/ModelsEvaluationHandler.java
index 78addf0328a..2661b9c2eb2 100644
--- a/model-evaluation/src/main/java/ai/vespa/models/handler/ModelsEvaluationHandler.java
+++ b/model-evaluation/src/main/java/ai/vespa/models/handler/ModelsEvaluationHandler.java
@@ -102,8 +102,9 @@ public class ModelsEvaluationHandler extends ThreadedHttpRequestHandler {
     private HttpResponse listAllModels(HttpRequest request) {
         Slime slime = new Slime();
         Cursor root = slime.setObject();
-        modelsEvaluator.models().keySet().stream().sorted()
-                .forEach(name -> root.setString(name, baseUrl(request) + name));
+        for (String modelName: modelsEvaluator.models().keySet()) {
+            root.setString(modelName, baseUrl(request) + modelName);
+        }
         return new Response(200, com.yahoo.slime.JsonFormat.toJsonBytes(slime));
     }
 
diff --git a/model-evaluation/src/test/java/ai/vespa/models/evaluation/ModelsEvaluatorTest.java b/model-evaluation/src/test/java/ai/vespa/models/evaluation/ModelsEvaluatorTest.java
index f09bac63085..c4e859bec9f 100644
--- a/model-evaluation/src/test/java/ai/vespa/models/evaluation/ModelsEvaluatorTest.java
+++ b/model-evaluation/src/test/java/ai/vespa/models/evaluation/ModelsEvaluatorTest.java
@@ -75,7 +75,7 @@ public class ModelsEvaluatorTest {
             evaluator.evaluate();
         }
         catch (IllegalStateException e) {
-            assertEquals("Argument 'arg1' must be bound to a value of type tensor(d0[1])",
+            assertEquals("Argument 'arg2' must be bound to a value of type tensor(d1{})",
                          Exceptions.toMessageString(e));
         }
 
@@ -88,15 +88,6 @@ public class ModelsEvaluatorTest {
             assertEquals("Argument 'arg1' must be bound to a value of type tensor(d0[1])",
                          Exceptions.toMessageString(e));
         }
-        try { // Just the other binding
-            FunctionEvaluator evaluator = model.evaluatorOf("test");
-            evaluator.bind("arg1", Tensor.from(TensorType.fromSpec("tensor(d0[1])"), "{{d0:0}:0.1}"));
-            evaluator.evaluate();
-        }
-        catch (IllegalStateException e) {
-            assertEquals("Argument 'arg2' must be bound to a value of type tensor(d1{})",
-                    Exceptions.toMessageString(e));
-        }
 
         try { // Wrong binding argument
             FunctionEvaluator evaluator = model.evaluatorOf("test");
diff --git a/model-evaluation/src/test/java/ai/vespa/models/handler/HandlerTester.java b/model-evaluation/src/test/java/ai/vespa/models/handler/HandlerTester.java
index 3b16be311a0..fc05a9936a9 100644
--- a/model-evaluation/src/test/java/ai/vespa/models/handler/HandlerTester.java
+++ b/model-evaluation/src/test/java/ai/vespa/models/handler/HandlerTester.java
@@ -10,6 +10,7 @@ import com.yahoo.tensor.serialization.JsonFormat;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.util.Collections;
 import java.util.Map;
 import java.util.concurrent.Executors;
 
@@ -24,19 +25,19 @@ class HandlerTester {
     }
 
     void assertResponse(String url, int expectedCode) {
-        assertResponse(url, Map.of(), expectedCode, (String)null);
+        assertResponse(url, Collections.emptyMap(), expectedCode, (String)null);
     }
 
     void assertResponse(String url, int expectedCode, String expectedResult) {
-        assertResponse(url, Map.of(), expectedCode, expectedResult);
+        assertResponse(url, Collections.emptyMap(), expectedCode, expectedResult);
     }
 
     void assertResponse(String url, int expectedCode, String expectedResult, Map<String, String> headers) {
-        assertResponse(url, Map.of(), expectedCode, expectedResult, headers);
+        assertResponse(url, Collections.emptyMap(), expectedCode, expectedResult, headers);
     }
 
     void assertResponse(String url, Map<String, String> properties, int expectedCode, String expectedResult) {
-        assertResponse(url, properties, expectedCode, expectedResult, Map.of());
+        assertResponse(url, properties, expectedCode, expectedResult, Collections.emptyMap());
     }
 
     void assertResponse(String url, Map<String, String> properties, int expectedCode, String expectedResult, Map<String, String> headers) {
diff --git a/model-evaluation/src/test/java/ai/vespa/models/handler/ModelsEvaluationHandlerTest.java b/model-evaluation/src/test/java/ai/vespa/models/handler/ModelsEvaluationHandlerTest.java
index d804e50c67d..0de8ce5f061 100644
--- a/model-evaluation/src/test/java/ai/vespa/models/handler/ModelsEvaluationHandlerTest.java
+++ b/model-evaluation/src/test/java/ai/vespa/models/handler/ModelsEvaluationHandlerTest.java
@@ -49,30 +49,16 @@ public class ModelsEvaluationHandlerTest {
     @Test
     public void testListModels() {
         String url = "http://localhost/model-evaluation/v1";
-        String expected = "{" +
-                "\"lightgbm_regression\":\"http://localhost/model-evaluation/v1/lightgbm_regression\"," +
-                "\"mnist_saved\":\"http://localhost/model-evaluation/v1/mnist_saved\"," +
-                "\"mnist_softmax\":\"http://localhost/model-evaluation/v1/mnist_softmax\"," +
-                "\"mnist_softmax_saved\":\"http://localhost/model-evaluation/v1/mnist_softmax_saved\"," +
-                "\"vespa_model\":\"http://localhost/model-evaluation/v1/vespa_model\"," +
-                "\"xgboost_2_2\":\"http://localhost/model-evaluation/v1/xgboost_2_2\"," +
-                "\"xgboost_non_standalone\":\"http://localhost/model-evaluation/v1/xgboost_non_standalone\"" +
-                "}";
+        String expected =
+                "{\"mnist_softmax\":\"http://localhost/model-evaluation/v1/mnist_softmax\",\"xgboost_non_standalone\":\"http://localhost/model-evaluation/v1/xgboost_non_standalone\",\"mnist_saved\":\"http://localhost/model-evaluation/v1/mnist_saved\",\"mnist_softmax_saved\":\"http://localhost/model-evaluation/v1/mnist_softmax_saved\",\"vespa_model\":\"http://localhost/model-evaluation/v1/vespa_model\",\"xgboost_2_2\":\"http://localhost/model-evaluation/v1/xgboost_2_2\",\"lightgbm_regression\":\"http://localhost/model-evaluation/v1/lightgbm_regression\"}";
         handler.assertResponse(url, 200, expected);
     }
 
     @Test
     public void testListModelsWithDifferentHost() {
         String url = "http://localhost/model-evaluation/v1";
-        String expected = "{" +
-                "\"lightgbm_regression\":\"http://localhost:8088/model-evaluation/v1/lightgbm_regression\"," +
-                "\"mnist_saved\":\"http://localhost:8088/model-evaluation/v1/mnist_saved\"," +
-                "\"mnist_softmax\":\"http://localhost:8088/model-evaluation/v1/mnist_softmax\"," +
-                "\"mnist_softmax_saved\":\"http://localhost:8088/model-evaluation/v1/mnist_softmax_saved\"," +
-                "\"vespa_model\":\"http://localhost:8088/model-evaluation/v1/vespa_model\"," +
-                "\"xgboost_2_2\":\"http://localhost:8088/model-evaluation/v1/xgboost_2_2\"," +
-                "\"xgboost_non_standalone\":\"http://localhost:8088/model-evaluation/v1/xgboost_non_standalone\"" +
-                "}";
+        String expected =
+                "{\"mnist_softmax\":\"http://localhost:8088/model-evaluation/v1/mnist_softmax\",\"xgboost_non_standalone\":\"http://localhost:8088/model-evaluation/v1/xgboost_non_standalone\",\"mnist_saved\":\"http://localhost:8088/model-evaluation/v1/mnist_saved\",\"mnist_softmax_saved\":\"http://localhost:8088/model-evaluation/v1/mnist_softmax_saved\",\"vespa_model\":\"http://localhost:8088/model-evaluation/v1/vespa_model\",\"xgboost_2_2\":\"http://localhost:8088/model-evaluation/v1/xgboost_2_2\",\"lightgbm_regression\":\"http://localhost:8088/model-evaluation/v1/lightgbm_regression\"}";
         handler.assertResponse(url, 200, expected, Map.of("Host", "localhost:8088"));
     }