getOrCreateConnection retrieves an existing connection or creates a new one for a given address.

map[string]*regexp.Regexp

create method, No need to judge whether to publish or not

getServiceAndMethod first return value is package.service, second one is method name

getUrls return exported urls from instance

gracefulStopServer attempts to gracefully stop the gRPC server with timeout

handleGrpcInvocation handle gRPC request through filter chain

handleHTTPRequest handle http request

handleInitialize handles the initialize method

handlePing handles the ping method

handlePostRequest handles HTTP POST requests with JSON-RPC messages

handlePromptsGet handles the prompts/get method

handlePromptsList handles the prompts/list method

handleResourceRead handles the resources/read method

handleResourceTemplatesList handles the resources/templates/list method

handleResourcesList handles the resources/list method

group@@serviceName convert to serviceName

handleStream handles all types of gRPC calls by creating a full-duplex stream pipe.

handleTerminalMethodWithNegotiation handles terminal methods with response format negotiation

handleToolCall handles tool call requests by forwarding to backend

handleToolCallResponse handles tool call responses, wrapping backend responses in MCP format

handleToolCallWithNegotiation handles tool calls with response format negotiation

handleToolsList handles the tools/list method using mcp-go APIs

hotReload checks for configuration changes and triggers hot reload for registered reloaders.

initApiConfig return value of the bool is for the judgment of whether is a api meta data error, a kind of silly (?)

initDefaultValue If not set both in args and env, set default values

initLog initializes logger according to log config file and log level

initOTelInstruments initializes OpenTelemetry instruments (singleton).

To subscribe service level service discovery

isIPAddress checks if a string is an IP address

isMCPRequest checks if it's an MCP request

==================== Utility Functions ==================== isMcpServerShouldBeDiscoveryForGateway checks if MCP server should be discovered by gatewa

isNacosRunning checks whether the Nacos server is running. It returns true if Nacos is running, otherwise false.

isSystemConfigKey determines if it is a system configuration key

isTerminalMethod checks if it's a terminal method (methods that don't need forwarding to backend)

==================== Internal Helper Methods ==================== listMcpServerConfigs paginates to get all MCP server configurations

loadTLSCredentials loads TLS credentials from certificate and key files

logConfiguration logs the current gRPC server configuration

logUsage prints usage details to the log.

makeHTTPFilter returns a handler for the given resource.