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feat: enable initial support for logging

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Closes #32
This commit is contained in:
Marc Nuri
2025-03-31 09:23:52 +02:00
parent 3a49d872be
commit fafdf9af5d
3 changed files with 26 additions and 6 deletions
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7
README.md
View File

@@ -128,9 +128,10 @@ npx kubernetes-mcp-server@latest --help
### Configuration Options
| Option | Description |
|--------------|------------------------------------------------------------------------------------------|
| `--sse-port` | Starts the MCP server in Server-Sent Event (SSE) mode and listens on the specified port. |
| Option | Description |
|---------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `--sse-port` | Starts the MCP server in Server-Sent Event (SSE) mode and listens on the specified port. |
| `--log-level` | Sets the logging level (values [from 0-9](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/logging.md)). Similar to [kubectl logging levels](https://kubernetes.io/docs/reference/kubectl/quick-reference/#kubectl-output-verbosity-and-debugging). |
## 🧑‍💻 Development <a id="development"></a>

2
go.mod
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@@ -13,6 +13,7 @@ require (
k8s.io/apiextensions-apiserver v0.32.3
k8s.io/apimachinery v0.32.3
k8s.io/client-go v0.32.3
k8s.io/klog/v2 v2.130.1
k8s.io/utils v0.0.0-20241104100929-3ea5e8cea738
sigs.k8s.io/controller-runtime v0.20.4
sigs.k8s.io/controller-runtime/tools/setup-envtest v0.0.0-20250211091558-894df3a7e664
@@ -64,7 +65,6 @@ require (
gopkg.in/evanphx/json-patch.v4 v4.12.0 // indirect
gopkg.in/inf.v0 v0.9.1 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
k8s.io/klog/v2 v2.130.1 // indirect
k8s.io/kube-openapi v0.0.0-20241105132330-32ad38e42d3f // indirect
sigs.k8s.io/json v0.0.0-20241010143419-9aa6b5e7a4b3 // indirect
sigs.k8s.io/structured-merge-diff/v4 v4.4.2 // indirect

23
pkg/kubernetes-mcp-server/cmd/root.go
View File

@@ -2,6 +2,7 @@ package cmd
import (
"errors"
"flag"
"fmt"
"github.com/manusa/kubernetes-mcp-server/pkg/mcp"
"github.com/manusa/kubernetes-mcp-server/pkg/version"
@@ -9,6 +10,10 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/viper"
"golang.org/x/net/context"
"k8s.io/klog/v2"
"k8s.io/klog/v2/textlogger"
"os"
"strconv"
)
var rootCmd = &cobra.Command{
@@ -34,6 +39,7 @@ Kubernetes Model Context Protocol (MCP) server
# TODO: add more examples`,
Run: func(cmd *cobra.Command, args []string) {
initLogging()
if viper.GetBool("version") {
fmt.Println(version.Version)
return
@@ -47,10 +53,12 @@ Kubernetes Model Context Protocol (MCP) server
var sseServer *server.SSEServer
if ssePort := viper.GetInt("sse-port"); ssePort > 0 {
sseServer = mcpServer.ServeSse(viper.GetString("sse-base-url"))
defer func() { _ = sseServer.Shutdown(cmd.Context()) }()
klog.V(0).Infof("SSE server starting on port %d", ssePort)
if err := sseServer.Start(fmt.Sprintf(":%d", ssePort)); err != nil {
panic(err)
klog.Errorf("Failed to start SSE server: %s", err)
return
}
defer sseServer.Shutdown(cmd.Context())
}
if err := mcpServer.ServeStdio(); err != nil && !errors.Is(err, context.Canceled) {
panic(err)
@@ -60,6 +68,7 @@ Kubernetes Model Context Protocol (MCP) server
func init() {
rootCmd.Flags().BoolP("version", "v", false, "Print version information and quit")
rootCmd.Flags().IntP("log-level", "", 0, "Set the log level (from 0 to 9)")
rootCmd.Flags().IntP("sse-port", "", 0, "Start a SSE server on the specified port")
rootCmd.Flags().StringP("sse-base-url", "", "", "SSE public base URL to use when sending the endpoint message (e.g. https://example.com)")
_ = viper.BindPFlags(rootCmd.Flags())
@@ -70,3 +79,13 @@ func Execute() {
panic(err)
}
}
func initLogging() {
logger := textlogger.NewLogger(textlogger.NewConfig(textlogger.Output(os.Stdout)))
klog.SetLoggerWithOptions(logger)
flagSet := flag.NewFlagSet("kubernetes-mcp-server", flag.ContinueOnError)
klog.InitFlags(flagSet)
if logLevel := viper.GetInt("log-level"); logLevel >= 0 {
_ = flagSet.Parse([]string{"--v", strconv.Itoa(logLevel)})
}
}