{"record":{"id":"2310af0267d9e784","repo":"Netflix/Hystrix","slug":"not-implemented-anymore-will-be-implemented-in-a","errorCode":null,"errorMessage":"Not implemented anymore.  Will be implemented in a new class shortly","messagePattern":"Not implemented anymore\\.  Will be implemented in a new class shortly","errorType":"exception","errorClass":"UnsupportedOperationException","httpStatus":null,"severity":"error","filePath":"hystrix-serialization/src/main/java/com/netflix/hystrix/serial/SerialHystrixConfiguration.java","lineNumber":40,"sourceCode":"import com.netflix.hystrix.config.HystrixCollapserConfiguration;\nimport com.netflix.hystrix.config.HystrixCommandConfiguration;\nimport com.netflix.hystrix.config.HystrixConfiguration;\nimport com.netflix.hystrix.config.HystrixThreadPoolConfiguration;\nimport org.slf4j.Logger;\nimport org.slf4j.LoggerFactory;\n\nimport java.io.IOException;\nimport java.io.StringWriter;\nimport java.nio.ByteBuffer;\nimport java.util.Map;\n\npublic class SerialHystrixConfiguration extends SerialHystrixMetric {\n\n    private static final Logger logger = LoggerFactory.getLogger(SerialHystrixConfiguration.class);\n\n    @Deprecated\n    public static byte[] toBytes(HystrixConfiguration config) {\n        throw new UnsupportedOperationException(\"Not implemented anymore.  Will be implemented in a new class shortly\");\n    }\n\n    public static String toJsonString(HystrixConfiguration config) {\n        StringWriter jsonString = new StringWriter();\n\n        try {\n            JsonGenerator json = jsonFactory.createGenerator(jsonString);\n\n            serializeConfiguration(config, json);\n        } catch (Exception e) {\n            throw new RuntimeException(e);\n        }\n\n        return jsonString.getBuffer().toString();\n    }\n\n    private static void serializeConfiguration(HystrixConfiguration config, JsonGenerator json) {\n        try {","sourceCodeStart":22,"sourceCodeEnd":58,"githubUrl":"https://github.com/Netflix/Hystrix/blob/5ce3bc58c38e7ca60ef2fe0e516e390e294ad941/hystrix-serialization/src/main/java/com/netflix/hystrix/serial/SerialHystrixConfiguration.java#L22-L58","documentation":"SerialHystrixConfiguration.toBytes(HystrixConfiguration) was the old binary (sbe-encoded) serialization entry point. It is deprecated and now throws UnsupportedOperationException unconditionally; the binary format was moved to a new serialization class (SerialHystrixConfigurationSerializion in hystrix-serialization). JSON serialization via toJsonString remains supported.","triggerScenarios":"Calling SerialHystrixConfiguration.toBytes(config) on Hystrix 1.5.x; legacy dashboard/metrics-publisher code that serializes HystrixConfiguration to bytes through this deprecated API.","commonSituations":"Upgrading from Hystrix 1.4/1.3 where toBytes worked; monitoring tooling that pushed sbe-encoded configuration snapshots still invoking the old entry point.","solutions":["Switch to SerialHystrixConfigurationSerializion.toBytes(config), the replacement binary serializer.","Or use toJsonString(config) if the consumer can accept JSON.","Delete the deprecated call site; it can never succeed on this version."],"exampleFix":"// before\nbyte[] data = SerialHystrixConfiguration.toBytes(config); // throws\n\n// after\nbyte[] data = SerialHystrixConfigurationSerializion.toBytes(config);\n// or: String json = SerialHystrixConfiguration.toJsonString(config);","handlingStrategy":"type-guard","validationCode":null,"typeGuard":"// compile-time: ensure the replacement API is used instead of the deprecated one\n// runtime probe (e.g. in migration scripts):\ntry {\n    SerialHystrixConfiguration.class.getMethod(\"toBytes\", HystrixConfiguration.class);\n    // method exists but throws - presence alone is not enough; switch call sites explicitly\n} catch (NoSuchMethodException ignored) {}","tryCatchPattern":"try {\n    byte[] b = SerialHystrixConfiguration.toBytes(config);\n} catch (UnsupportedOperationException e) {\n    byte[] b = SerialHystrixConfigurationSerializion.toBytes(config); // migration path\n}","preventionTips":["Treat UnsupportedOperationException on @Deprecated Hystrix serialization APIs as compile-time warnings to migrate.","Switch binary serialization call sites when upgrading to Hystrix 1.5+."],"tags":["hystrix","serialization","deprecated","migration"],"backgroundTag":null,"analyzedSha":"5ce3bc58c38e7ca60ef2fe0e516e390e294ad941","analyzedAt":"2026-08-14T10:55:35.600Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}