Better fx run remote docker host (#338)

context/context.go

@@ -0,0 +1,58 @@
+package context
+
+import (
+	"context"
+
+	"github.com/urfave/cli"
+)
+
+type key string
+
+const (
+	keyCliCtx = key("cmd_cli")
+)
+
+// Context fx context
+type Context struct {
+	context.Context
+}
+
+// NewContext new a context
+func NewContext() *Context {
+	ctx := context.Background()
+	return &Context{ctx}
+}
+
+// FromCliContext create context from cli.Context
+func FromCliContext(c *cli.Context) *Context {
+	ctx := NewContext()
+	ctx.WithCliContext(c)
+	return ctx
+}
+
+// WithCliContext set cli.Context
+func (ctx *Context) WithCliContext(c *cli.Context) {
+	newCtx := context.WithValue(ctx.Context, keyCliCtx, c)
+	ctx.Context = newCtx
+}
+
+// GetCliContext get cli.Context
+func (ctx *Context) GetCliContext() *cli.Context {
+	return ctx.Value(keyCliCtx).(*cli.Context)
+}
+
+// Set a value with name
+func (ctx *Context) Set(name string, value interface{}) {
+	newCtx := context.WithValue(ctx.Context, name, value)
+	ctx.Context = newCtx
+}
+
+// Get a value
+func (ctx *Context) Get(name string) interface{} {
+	return ctx.Context.Value(name)
+}
+
+// Use invole a middle
+func (ctx *Context) Use(fn func(ctx *Context) error) error {
+	return fn(ctx)
+}