feat: Add Opentelemetry integration design in client_design.md

Signed-off-by: chenhuan <xiangyuyu_2024@qq.com>

Author: chenhuansome

openGemini.github.io

@@ -0,0 +1 @@
+Subproject commit 7ca72bd65544f93de353c494d1abdbbb79f6b31e

src/guide/develop/client_design.md

@@ -245,6 +245,179 @@ classDiagram
     SeriesResult "1" *-- "0..*" Series: contains
 ```
 
+# OpenTelemetry integration design
+To enhance the observability of the OpenGemini client and facilitate tracking of performance metrics, errors, and other information related to query and write operations, this solution adopts the interceptor pattern to integrate OpenTelemetry, enabling full-link tracing. The design supports non-intrusive extensions, allowing coexistence with other interceptors (such as logging and authentication interceptors) while minimizing modifications to the original client.
+
+## Interceptor design
+The interceptor pattern defines a standardized interface to hook into client operations (query/write) and inject telemetry logic.
+
+
+```mermaid
+Interceptor interface {
+	Query(ctx context.Context, query *InterceptorQuery) InterceptorClosure
+	Write(ctx context.Context, write *InterceptorWrite) InterceptorClosure
+}
+```
+
+## Define the base client class,associated with the Interceptor interface
+The base  Client  class manages a collection of interceptors, allowing dynamic registration and execution of interceptor logic during client operations.
+
+```mermaid
+class Client {
+- []Interceptor interceptors
+}
+```
+
+## Define the interceptor implementation class integrating OpenTelemetry,implementing the Interceptor interface
+The OtelClient class implements the Interceptor interface, embedding OpenTelemetry logic to capture traces, metrics, and logs for client operations.
+
+```mermaid
+class OtelClient {
+    Interceptor
+}
+```
+
+## Tracing system core module
+
+```mermaid
+    class TraceContext {
+        + traceId: String
+        + parentTraceId: String
+        + operationName: String
+        + timestamp: Long
+        + attributes: Map~String, Object~
+        + createChildContext() : TraceContext
+        + addAttribute(key, value) : void
+        + getAttribute(key) : Object
+    }
+
+    class ContextManager {
+        + getCurrentContext() : TraceContext
+        + bindContext(context, task) : void
+        + unbindContext() : TraceContext
+    }
+
+    class OperationInterceptor {
+        <<Interface>>
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, result) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class QueryInterceptor {
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, queryResult) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class WriteInterceptor {
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, writeResult) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class InterceptorChain {
+        + interceptors: List~OperationInterceptor~
+        + addInterceptor(interceptor) : void
+        + executePreFlow(operationContext) : void
+        + executePostFlow(operationContext, result) : void
+        + executeErrorFlow(operationContext, exception) : void
+    }
+
+    class OperationContext {
+        + traceContext: TraceContext
+        + operationType: Enum~Query/Write~
+        + operationParams: Map~String, Object~
+        + getTraceContext() : TraceContext
+        + setOperationResult(result) : void
+    }
+
+    class SDKConfigurator {
+        + configureExporter(exporter) : SDKConfigurator
+        + configurePropagator(propagator) : SDKConfigurator
+        + configureTracerProvider(provider) : SDKConfigurator
+        + initialize() : OpenTelemetrySDK
+    }
+
+    class TraceExporter {
+        <<Interface>>
+        + exportTraceData(traceDataList) : void
+    }
+
+    class ContextPropagator {
+        <<Interface>>
+        + inject(traceContext, carrier) : void
+        + extract(carrier) : TraceContext
+    }
+
+    class TracerProvider {
+        + getTracer(name) : Tracer
+    }
+
+    class Tracer {
+        + createTraceContext(operationName) : TraceContext
+        + endTraceContext(traceContext) : void
+    }
+
+    class OpenTelemetrySDK {
+        + getTracerProvider() : TracerProvider
+        + getContextPropagator() : ContextPropagator
+        + getTraceExporter() : TraceExporter
+    }
+
+    QueryInterceptor ..|> OperationInterceptor
+    WriteInterceptor ..|> OperationInterceptor
+    InterceptorChain o-- OperationInterceptor : contains
+    OperationContext o-- TraceContext : holds
+    ContextManager o-- TraceContext : manages
+
+    SDKConfigurator ..> TraceExporter : configures
+    SDKConfigurator ..> ContextPropagator : configures
+    SDKConfigurator ..> TracerProvider : configures
+    SDKConfigurator ..> OpenTelemetrySDK : initializes
+    OpenTelemetrySDK o-- TracerProvider : contains
+    OpenTelemetrySDK o-- ContextPropagator : contains
+    OpenTelemetrySDK o-- TraceExporter : contains
+    TracerProvider o-- Tracer : provides
+    Tracer ..> TraceContext : creates/ends
+
+    InterceptorChain ..> OperationContext : processes
+    Tracer ..> ContextManager : binds context
+```
+
+## Usage Example(Go language examples)
+
+```mermaid
+func main() {
+    var ctx = context.Background()
+    shutdown, err := setupOtelSDK(ctx)
+    if err != nil {
+        return
+    }
+    defer func() {
+        err = errors.Join(err, shutdown(ctx))
+    }()
+
+    config := &opengemini.Config{
+        Addresses: []opengemini.Address{{
+            Host: "127.0.0.1",
+            Port: 8086,
+        }},
+    }
+    client, err := opengemini.NewClient(config)
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+
+    client.Interceptors(opengemini.NewOtelInterceptor())
+
+    err = client.CreateDatabase("db0")
+    if err != nil {
+    }
+}
+```
+
 # QueryBuilder design
 
 ```mermaid

src/zh/guide/develop/client_design.md

@@ -230,6 +230,177 @@ classDiagram
     SeriesResult "1" *-- "0..*" Series: contains
 ```
 
+# OpenTelemetry 集成设计
+为增强 OpenGemini 客户端的可观测性，便于追踪与查询、写入操作相关的性能指标、错误及其他信息，本方案采用拦截器模式集成 OpenTelemetry，实现全链路追踪。该设计支持非侵入式扩展，允许与其他拦截器（如日志、认证拦截器）共存，同时最大限度减少对原有客户端的修改。
+## 拦截器设计
+拦截器模式定义了标准化接口，用于挂钩客户端操作（查询/写入）并注入遥测逻辑。
+
+```mermaid
+Interceptor interface {
+	Query(ctx context.Context, query *InterceptorQuery) InterceptorClosure
+	Write(ctx context.Context, write *InterceptorWrite) InterceptorClosure
+}
+```
+
+## 定义基础客户端类，关联拦截器接口
+基础 Client 类管理一组拦截器，允许在客户端操作期间动态注册和执行拦截器逻辑。
+
+```mermaid
+class Client {
+- []Interceptor interceptors
+}
+```
+
+## 定义集成 OpenTelemetry 的拦截器实现类，实现 Interceptor 接口
+OtelClient 类实现 Interceptor 接口，嵌入 OpenTelemetry 逻辑以捕获客户端操作的跟踪、指标和日志。
+
+```mermaid
+class OtelClient {
+    Interceptor
+}
+```
+
+## 追踪系统核心模块
+
+```mermaid
+    class TraceContext {
+        + traceId: String
+        + parentTraceId: String
+        + operationName: String
+        + timestamp: Long
+        + attributes: Map~String, Object~
+        + createChildContext() : TraceContext
+        + addAttribute(key, value) : void
+        + getAttribute(key) : Object
+    }
+
+    class ContextManager {
+        + getCurrentContext() : TraceContext
+        + bindContext(context, task) : void
+        + unbindContext() : TraceContext
+    }
+
+    class OperationInterceptor {
+        <<Interface>>
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, result) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class QueryInterceptor {
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, queryResult) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class WriteInterceptor {
+        + preProcess(operationContext) : void
+        + postProcess(operationContext, writeResult) : void
+        + errorProcess(operationContext, exception) : void
+    }
+
+    class InterceptorChain {
+        + interceptors: List~OperationInterceptor~
+        + addInterceptor(interceptor) : void
+        + executePreFlow(operationContext) : void
+        + executePostFlow(operationContext, result) : void
+        + executeErrorFlow(operationContext, exception) : void
+    }
+
+    class OperationContext {
+        + traceContext: TraceContext
+        + operationType: Enum~Query/Write~
+        + operationParams: Map~String, Object~
+        + getTraceContext() : TraceContext
+        + setOperationResult(result) : void
+    }
+
+    class SDKConfigurator {
+        + configureExporter(exporter) : SDKConfigurator
+        + configurePropagator(propagator) : SDKConfigurator
+        + configureTracerProvider(provider) : SDKConfigurator
+        + initialize() : OpenTelemetrySDK
+    }
+
+    class TraceExporter {
+        <<Interface>>
+        + exportTraceData(traceDataList) : void
+    }
+
+    class ContextPropagator {
+        <<Interface>>
+        + inject(traceContext, carrier) : void
+        + extract(carrier) : TraceContext
+    }
+
+    class TracerProvider {
+        + getTracer(name) : Tracer
+    }
+
+    class Tracer {
+        + createTraceContext(operationName) : TraceContext
+        + endTraceContext(traceContext) : void
+    }
+
+    class OpenTelemetrySDK {
+        + getTracerProvider() : TracerProvider
+        + getContextPropagator() : ContextPropagator
+        + getTraceExporter() : TraceExporter
+    }
+
+    QueryInterceptor ..|> OperationInterceptor
+    WriteInterceptor ..|> OperationInterceptor
+    InterceptorChain o-- OperationInterceptor : contains
+    OperationContext o-- TraceContext : holds
+    ContextManager o-- TraceContext : manages
+
+    SDKConfigurator ..> TraceExporter : configures
+    SDKConfigurator ..> ContextPropagator : configures
+    SDKConfigurator ..> TracerProvider : configures
+    SDKConfigurator ..> OpenTelemetrySDK : initializes
+    OpenTelemetrySDK o-- TracerProvider : contains
+    OpenTelemetrySDK o-- ContextPropagator : contains
+    OpenTelemetrySDK o-- TraceExporter : contains
+    TracerProvider o-- Tracer : provides
+    Tracer ..> TraceContext : creates/ends
+
+    InterceptorChain ..> OperationContext : processes
+    Tracer ..> ContextManager : binds context
+```
+
+## 使用示例(Go language examples)
+
+```mermaid
+func main() {
+    var ctx = context.Background()
+    shutdown, err := setupOtelSDK(ctx)
+    if err != nil {
+        return
+    }
+    defer func() {
+        err = errors.Join(err, shutdown(ctx))
+    }()
+
+    config := &opengemini.Config{
+        Addresses: []opengemini.Address{{
+            Host: "127.0.0.1",
+            Port: 8086,
+        }},
+    }
+    client, err := opengemini.NewClient(config)
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+
+    client.Interceptors(opengemini.NewOtelInterceptor())
+
+    err = client.CreateDatabase("db0")
+    if err != nil {
+    }
+}
+```
+
 # 查询构造器设计
 
 ```mermaid