christophd commented on code in PR #27440: URL: https://github.com/apache/camel/pull/27440#discussion_r4221051243
########## components/camel-openfeature/src/main/java/org/apache/camel/component/openfeature/OpenFeatureEndpoint.java: ########## @@ -0,0 +1,447 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.camel.component.openfeature; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.time.Instant; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import dev.openfeature.contrib.providers.flagd.Config; +import dev.openfeature.contrib.providers.flagd.FlagdOptions; +import dev.openfeature.contrib.providers.flagd.FlagdProvider; +import dev.openfeature.sdk.Client; +import dev.openfeature.sdk.FeatureProvider; +import dev.openfeature.sdk.FlagEvaluationDetails; +import dev.openfeature.sdk.MutableContext; +import dev.openfeature.sdk.MutableStructure; +import dev.openfeature.sdk.Value; +import org.apache.camel.Category; +import org.apache.camel.Consumer; +import org.apache.camel.Exchange; +import org.apache.camel.Processor; +import org.apache.camel.Producer; +import org.apache.camel.spi.Metadata; +import org.apache.camel.spi.UriEndpoint; +import org.apache.camel.spi.UriParam; +import org.apache.camel.spi.UriPath; +import org.apache.camel.support.DefaultEndpoint; +import org.apache.camel.support.ResourceHelper; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** Evaluate feature flags using the OpenFeature specification with flagd. */ +@UriEndpoint(firstVersion = "4.23.0", scheme = "openfeature", title = "OpenFeature", + syntax = "openfeature:domain/evaluationType", + producerOnly = true, category = { Category.CLOUD }, headersClass = OpenFeatureConstants.class) +public class OpenFeatureEndpoint extends DefaultEndpoint { + + private static final Logger LOG = LoggerFactory.getLogger(OpenFeatureEndpoint.class); + private static final String DEFAULT_PROVIDER_BEAN = "flags"; + + @UriPath + @Metadata(required = true, description = "The OpenFeature domain to bind the provider to.") + private String domain; + + @UriPath(enums = "boolean,variant,isEnabled", + description = "The evaluation type. 'boolean' and 'isEnabled' use boolean evaluation (getBooleanValue)." + + " 'variant' uses string evaluation (getStringValue)." + + " When not set, the type is inferred from defaultValue.") + private String evaluationType; + + @UriParam + private OpenFeatureConfiguration configuration; + + private volatile Client client; + + public OpenFeatureEndpoint(String uri, OpenFeatureComponent component, String domain, String evaluationType, + OpenFeatureConfiguration configuration) { + super(uri, component); + this.domain = domain; + this.evaluationType = evaluationType; + this.configuration = configuration; + } + + @Override + public OpenFeatureComponent getComponent() { + return (OpenFeatureComponent) super.getComponent(); + } + + public String getEvaluationType() { + return evaluationType; + } + + public void setEvaluationType(String evaluationType) { + this.evaluationType = evaluationType; + } + + @Override + public Producer createProducer() { + return new OpenFeatureProducer(this); + } + + @Override + public Consumer createConsumer(Processor processor) { + throw new UnsupportedOperationException("OpenFeature is producer only"); + } + + @Override + protected void doStart() throws Exception { + super.doStart(); + configuration.validate(); + + if (domain == null || domain.isBlank()) { + throw new IllegalArgumentException("domain must not be blank"); + } + + client = getComponent().acquireOrRegister(domain, this::resolveProvider); + } + + @Override + protected void doStop() throws Exception { + if (client != null) { + client = null; + getComponent().unregisterEndpoint(domain); + } + super.doStop(); + } + + /** + * Evaluate a flag from the producer path. Reads flag key, evaluation type, targeting key and context from exchange + * headers/properties/configuration. Sets result detail headers on the exchange. + */ + public Object evaluate(Exchange exchange) { + String flagKey = resolveFlagKey(exchange); + String evalType = resolveEvaluationType(exchange); + MutableContext ctx = buildContext(exchange); + FlagEvaluationDetails<?> details = evaluateDetails(flagKey, evalType, ctx); + setResultHeaders(exchange, details); + return details.getValue(); + } + + /** + * Evaluate a flag from the language path with explicit parameters. Does not read from or write to the exchange — no + * side effects on headers or properties. + */ + public Object evaluate(String flagKey, String evaluationType, String targetingKey, Map<String, Object> contextMap) { + MutableContext ctx = buildMutableContext(targetingKey, contextMap); + return evaluateDetails(flagKey, evaluationType, ctx).getValue(); + } + + private FlagEvaluationDetails<?> evaluateDetails(String flagKey, String evaluationType, MutableContext ctx) { + Client c = client; + if (c == null) { + throw new IllegalStateException("OpenFeature endpoint is not started"); + } + + FlagEvaluationDetails<?> details; + if (isBooleanEvaluation(evaluationType)) { + boolean defaultVal = Boolean.parseBoolean(configuration.getDefaultValue()); + details = c.getBooleanDetails(flagKey, defaultVal, ctx); + } else { + details = c.getStringDetails(flagKey, configuration.getDefaultValue(), ctx); + } + + if (details.getErrorCode() != null) { + LOG.warn("OpenFeature evaluation error for flag '{}': {} - {}", + flagKey, details.getErrorCode(), details.getErrorMessage()); + } + return details; + } + + @SuppressWarnings("unchecked") + MutableContext buildContext(Exchange exchange) { + Map<String, Object> contextMap = null; + + Object contextHeader = exchange.getMessage().getHeader(OpenFeatureConstants.EVALUATION_CONTEXT); + if (contextHeader == null) { + contextHeader = exchange.getProperty(OpenFeatureConstants.EVALUATION_CONTEXT); + } + if (contextHeader instanceof Map) { + contextMap = (Map<String, Object>) contextHeader; + } else if (configuration.isContextFromBody()) { + Object body = exchange.getMessage().getBody(); + if (body instanceof Map) { + contextMap = (Map<String, Object>) body; + } + } + + String targetingKey = exchange.getMessage().getHeader(OpenFeatureConstants.TARGETING_KEY, String.class); + if (targetingKey == null) { + targetingKey = exchange.getProperty(OpenFeatureConstants.TARGETING_KEY, String.class); + } + + return buildMutableContext(targetingKey, contextMap); + } + + static MutableContext buildMutableContext(String targetingKey, Map<String, Object> contextMap) { + if (contextMap == null || contextMap.isEmpty()) { + if (targetingKey != null) { + return new MutableContext(targetingKey); + } + return new MutableContext(); + } + + Map<String, Value> attributes = new HashMap<>(); + String tk = targetingKey; + for (Map.Entry<String, Object> entry : contextMap.entrySet()) { + if ("targetingKey".equals(entry.getKey())) { + if (tk == null && entry.getValue() != null) { + tk = String.valueOf(entry.getValue()); + } + } else { + attributes.put(entry.getKey(), toValue(entry.getValue())); + } + } + + if (tk != null) { + return new MutableContext(tk, attributes); + } + return new MutableContext(attributes); + } + + @SuppressWarnings("unchecked") + private static Value toValue(Object obj) { + if (obj == null) { + return new Value(); + } + if (obj instanceof Boolean) { + return new Value((Boolean) obj); + } + if (obj instanceof String) { + return new Value((String) obj); + } + if (obj instanceof Integer) { + return new Value((Integer) obj); + } + if (obj instanceof Long) { + return new Value((Long) obj); + } + if (obj instanceof Double) { + return new Value((Double) obj); + } + if (obj instanceof Number) { + return new Value(((Number) obj).doubleValue()); + } + if (obj instanceof Instant) { + return new Value((Instant) obj); + } + if (obj instanceof Map) { + Map<String, Value> attributes = new HashMap<>(); + for (Map.Entry<?, ?> entry : ((Map<?, ?>) obj).entrySet()) { + attributes.put(String.valueOf(entry.getKey()), toValue(entry.getValue())); + } + return new Value(new MutableStructure(attributes)); + } + if (obj instanceof List) { + List<Value> values = new ArrayList<>(); + for (Object item : (List<?>) obj) { + values.add(toValue(item)); + } + return new Value(values); + } + return new Value(String.valueOf(obj)); + } + + String resolveFlagKey(Exchange exchange) { + String key = exchange.getMessage().getHeader(OpenFeatureConstants.FLAG_KEY, String.class); + if (key == null) { + key = exchange.getProperty(OpenFeatureConstants.FLAG_KEY, String.class); + } + if (key == null) { + key = configuration.getFlagKey(); + } + if (key == null || key.isBlank()) { + throw new IllegalArgumentException( + "No flag key specified. Set flagKey on the endpoint or provide it via the " + + OpenFeatureConstants.FLAG_KEY + " header."); + } + return key; + } + + private String resolveEvaluationType(Exchange exchange) { + String evalType = exchange.getMessage().getHeader(OpenFeatureConstants.EVALUATION_TYPE, String.class); + if (evalType == null) { + evalType = exchange.getProperty(OpenFeatureConstants.EVALUATION_TYPE, String.class); + } + if (evalType == null) { + evalType = evaluationType; + } + if (evalType == null) { + evalType = configuration.getEvaluationType(); + } + return evalType; + } + + private boolean isBooleanEvaluation(String evalType) { + if ("boolean".equalsIgnoreCase(evalType) || "isEnabled".equalsIgnoreCase(evalType)) { + return true; + } + if ("variant".equalsIgnoreCase(evalType)) { + return false; + } + String dv = configuration.getDefaultValue(); + return "true".equalsIgnoreCase(dv) || "false".equalsIgnoreCase(dv); + } Review Comment: Fixed. `isBooleanEvaluation()` now throws `IllegalArgumentException` for unknown values when `evalType` is explicitly set (non-null/non-empty). Null or empty still falls through to defaultValue-based inference. Added a test that sends `booleen` via the header and verifies the exception. _Claude Code on behalf of Christoph Deppisch_ ########## components/camel-openfeature/src/main/java/org/apache/camel/component/openfeature/OpenFeatureEndpoint.java: ########## @@ -0,0 +1,447 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.camel.component.openfeature; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.time.Instant; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import dev.openfeature.contrib.providers.flagd.Config; +import dev.openfeature.contrib.providers.flagd.FlagdOptions; +import dev.openfeature.contrib.providers.flagd.FlagdProvider; +import dev.openfeature.sdk.Client; +import dev.openfeature.sdk.FeatureProvider; +import dev.openfeature.sdk.FlagEvaluationDetails; +import dev.openfeature.sdk.MutableContext; +import dev.openfeature.sdk.MutableStructure; +import dev.openfeature.sdk.Value; +import org.apache.camel.Category; +import org.apache.camel.Consumer; +import org.apache.camel.Exchange; +import org.apache.camel.Processor; +import org.apache.camel.Producer; +import org.apache.camel.spi.Metadata; +import org.apache.camel.spi.UriEndpoint; +import org.apache.camel.spi.UriParam; +import org.apache.camel.spi.UriPath; +import org.apache.camel.support.DefaultEndpoint; +import org.apache.camel.support.ResourceHelper; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** Evaluate feature flags using the OpenFeature specification with flagd. */ +@UriEndpoint(firstVersion = "4.23.0", scheme = "openfeature", title = "OpenFeature", + syntax = "openfeature:domain/evaluationType", + producerOnly = true, category = { Category.CLOUD }, headersClass = OpenFeatureConstants.class) +public class OpenFeatureEndpoint extends DefaultEndpoint { + + private static final Logger LOG = LoggerFactory.getLogger(OpenFeatureEndpoint.class); + private static final String DEFAULT_PROVIDER_BEAN = "flags"; + + @UriPath + @Metadata(required = true, description = "The OpenFeature domain to bind the provider to.") + private String domain; + + @UriPath(enums = "boolean,variant,isEnabled", + description = "The evaluation type. 'boolean' and 'isEnabled' use boolean evaluation (getBooleanValue)." + + " 'variant' uses string evaluation (getStringValue)." + + " When not set, the type is inferred from defaultValue.") + private String evaluationType; + + @UriParam + private OpenFeatureConfiguration configuration; + + private volatile Client client; + + public OpenFeatureEndpoint(String uri, OpenFeatureComponent component, String domain, String evaluationType, + OpenFeatureConfiguration configuration) { + super(uri, component); + this.domain = domain; + this.evaluationType = evaluationType; + this.configuration = configuration; + } + + @Override + public OpenFeatureComponent getComponent() { + return (OpenFeatureComponent) super.getComponent(); + } + + public String getEvaluationType() { + return evaluationType; + } + + public void setEvaluationType(String evaluationType) { + this.evaluationType = evaluationType; + } + + @Override + public Producer createProducer() { + return new OpenFeatureProducer(this); + } + + @Override + public Consumer createConsumer(Processor processor) { + throw new UnsupportedOperationException("OpenFeature is producer only"); + } + + @Override + protected void doStart() throws Exception { + super.doStart(); + configuration.validate(); + + if (domain == null || domain.isBlank()) { + throw new IllegalArgumentException("domain must not be blank"); + } + + client = getComponent().acquireOrRegister(domain, this::resolveProvider); + } + + @Override + protected void doStop() throws Exception { + if (client != null) { + client = null; + getComponent().unregisterEndpoint(domain); + } + super.doStop(); + } + + /** + * Evaluate a flag from the producer path. Reads flag key, evaluation type, targeting key and context from exchange + * headers/properties/configuration. Sets result detail headers on the exchange. + */ + public Object evaluate(Exchange exchange) { + String flagKey = resolveFlagKey(exchange); + String evalType = resolveEvaluationType(exchange); + MutableContext ctx = buildContext(exchange); + FlagEvaluationDetails<?> details = evaluateDetails(flagKey, evalType, ctx); + setResultHeaders(exchange, details); + return details.getValue(); + } + + /** + * Evaluate a flag from the language path with explicit parameters. Does not read from or write to the exchange — no + * side effects on headers or properties. + */ + public Object evaluate(String flagKey, String evaluationType, String targetingKey, Map<String, Object> contextMap) { + MutableContext ctx = buildMutableContext(targetingKey, contextMap); + return evaluateDetails(flagKey, evaluationType, ctx).getValue(); + } + + private FlagEvaluationDetails<?> evaluateDetails(String flagKey, String evaluationType, MutableContext ctx) { + Client c = client; + if (c == null) { + throw new IllegalStateException("OpenFeature endpoint is not started"); + } + + FlagEvaluationDetails<?> details; + if (isBooleanEvaluation(evaluationType)) { + boolean defaultVal = Boolean.parseBoolean(configuration.getDefaultValue()); + details = c.getBooleanDetails(flagKey, defaultVal, ctx); + } else { + details = c.getStringDetails(flagKey, configuration.getDefaultValue(), ctx); + } + + if (details.getErrorCode() != null) { + LOG.warn("OpenFeature evaluation error for flag '{}': {} - {}", + flagKey, details.getErrorCode(), details.getErrorMessage()); + } Review Comment: Leaving as-is — the WARN-per-evaluation is a reasonable default for most routes, and for high-volume routes where this becomes noisy, logging configuration (e.g. setting the category to ERROR/OFF) can adjust the behavior without adding complexity to the component code. _Claude Code on behalf of Christoph Deppisch_ -- This is an automated message from the Apache Git Service. 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