Revert "[EIS] Validate EIS Gateway URL if set (elastic#114600)"

This reverts commit 39168e1.

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSettings.java

@@ -7,65 +7,14 @@
 
 package org.elasticsearch.xpack.inference.services.elastic;
 
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import org.elasticsearch.common.settings.Setting;
 import org.elasticsearch.common.settings.Settings;
 
-import java.net.URI;
-import java.net.URISyntaxException;
 import java.util.List;
-import java.util.Objects;
-import java.util.Set;
 
-/**
- * Class encapsulating any global setting for the EIS integration.
- */
 public class ElasticInferenceServiceSettings {
 
-    public static final Setting<String> EIS_GATEWAY_URL = Setting.simpleString(
-        "xpack.inference.eis.gateway.url",
-        new EisGatewayURLValidator(),
-        Setting.Property.NodeScope
-    );
-
-    private static final Logger log = LogManager.getLogger(ElasticInferenceServiceSettings.class);
-
-    /**
-     * Class to validate the EIS Gateway url set via `xpack.inference.eis.gateway.url`.
-     */
-    public static class EisGatewayURLValidator implements Setting.Validator<String> {
-
-        private static final Set<String> VALID_EIS_GATEWAY_SCHEMES = Set.of("http", "https");
-
-        @Override
-        public void validate(String value) {
-            if (Objects.isNull(value) || value.isEmpty()) {
-                // No validation needed, if eis-gateway URL is not set
-                log.debug("eis-gateway url not set. Skipping validation");
-                return;
-            }
-
-            try {
-                var uri = new URI(value);
-                var scheme = uri.getScheme();
-
-                if (scheme == null || VALID_EIS_GATEWAY_SCHEMES.contains(scheme) == false) {
-                    throw new IllegalArgumentException(
-                        "["
-                            + scheme
-                            + "] is not a valid URI scheme for the setting ["
-                            + ElasticInferenceServiceSettings.EIS_GATEWAY_URL.getKey()
-                            + "]. Use one of ["
-                            + String.join(",", VALID_EIS_GATEWAY_SCHEMES)
-                            + "]"
-                    );
-                }
-            } catch (URISyntaxException e) {
-                throw new IllegalArgumentException("[" + e.getInput() + "] is not a valid URI", e);
-            }
-        }
-    }
+    static final Setting<String> EIS_GATEWAY_URL = Setting.simpleString("xpack.inference.eis.gateway.url", Setting.Property.NodeScope);
 
     // Adjust this variable to be volatile, if the setting can be updated at some point in time
     private final String eisGatewayUrl;

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSparseEmbeddingsModel.java

@@ -108,12 +108,6 @@ private URI createUri() throws URISyntaxException {
             default -> throw new IllegalArgumentException("Unsupported model for EIS [" + modelId + "]");
         }
 
-        var uriString = elasticInferenceServiceComponents().eisGatewayUrl() + "/sparse-text-embedding/" + modelIdUriPath;
-
-        // We perform the same validation here as when reading the setting to make sure that our extended URI is still valid
-        // This method throws, if the URI is invalid
-        new ElasticInferenceServiceSettings.EisGatewayURLValidator().validate(uriString);
-
-        return new URI(uriString);
+        return new URI(elasticInferenceServiceComponents().eisGatewayUrl() + "/sparse-text-embedding/" + modelIdUriPath);
     }
 }

x-pack/plugin/inference/src/test/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceSparseEmbeddingsModelTests.java

@@ -15,34 +15,6 @@
 
 public class ElasticInferenceServiceSparseEmbeddingsModelTests extends ESTestCase {
 
-    public void testCreateURI_ThrowError_OnMissingURIScheme() {
-        expectThrows(IllegalArgumentException.class, () -> createModel("www.missing-scheme-gateway-url.com"));
-    }
-
-    public void testCreateURI_ThrowError_OnWrongURIScheme() {
-        expectThrows(IllegalArgumentException.class, () -> createModel("file://www.missing-scheme-gateway-url.com"));
-    }
-
-    public void testCreateURI_DoesNotThrowError_ForHTTP() {
-        var scheme = "http";
-
-        try {
-            createModel(scheme + "://www.valid-gateway-url.com");
-        } catch (Exception e) {
-            fail(e, "Should not throw exception for " + "[" + scheme + "]");
-        }
-    }
-
-    public void testCreateURI_DoesNotThrowError_ForHTTPS() {
-        var scheme = "https";
-
-        try {
-            createModel(scheme + "://www.valid-gateway-url.com");
-        } catch (Exception e) {
-            fail(e, "Should not throw exception for " + "[" + scheme + "]");
-        }
-    }
-
     public static ElasticInferenceServiceSparseEmbeddingsModel createModel(String url) {
         return createModel(url, null);
     }

x-pack/plugin/inference/src/test/java/org/elasticsearch/xpack/inference/services/elastic/ElasticInferenceServiceTests.java

@@ -492,7 +492,7 @@ private ElasticInferenceService createServiceWithMockSender() {
         return new ElasticInferenceService(
             mock(HttpRequestSender.Factory.class),
             createWithEmptySettings(threadPool),
-            new ElasticInferenceServiceComponents("http://valid-eis-gateway-url.com")
+            new ElasticInferenceServiceComponents(null)
         );
     }
 }