add s3

Makefile

@@ -4,6 +4,7 @@ aws-sdk-client-go: go.* *.go gen
 	go build -o $@ cmd/aws-sdk-client-go/main.go
 
 gen:
+	go get ./...
 	go run cmd/aws-sdk-client-gen/main.go
 	go fmt .
 

README.md

@@ -18,16 +18,28 @@ The output is JSON format.
 
 ### Examples
 
+#### Show supported services
+
+```console
+$ aws-sdk-client-go
+```
+
+### Show methods of the service
+
 ```console
-$ aws-sdk-client-go ecs ListClusters
+$ aws-sdk-client-go ecs
 ```
 
-The third argument is optional. The value is passed to the method as a input parameter.
+### Call method of the service
 
 ```console
 $ aws-sdk-client-go ecs DescribeClusters '{"Cluster":"default"}'
 ```
 
+The third argument is JSON input for the method. If the method does not require input, you can omit the third argument (implicitly `{}` passed).
+
+```console
+
 ## LICENSE
 
 MIT

cmd/aws-sdk-client-gen/main.go

@@ -10,6 +10,7 @@ import (
 	"github.com/aws/aws-sdk-go-v2/service/ecs"
 	"github.com/aws/aws-sdk-go-v2/service/firehose"
 	"github.com/aws/aws-sdk-go-v2/service/kinesis"
+	"github.com/aws/aws-sdk-go-v2/service/s3"
 	"github.com/aws/aws-sdk-go-v2/service/ssm"
 )
 
@@ -18,6 +19,7 @@ func main() {
 	gen("firehose", reflect.TypeOf(firehose.New(firehose.Options{})))
 	gen("ssm", reflect.TypeOf(ssm.New(ssm.Options{})))
 	gen("ecs", reflect.TypeOf(ecs.New(ecs.Options{})))
+	gen("s3", reflect.TypeOf(s3.New(s3.Options{})))
 }
 
 func gen(pkgName string, clientType reflect.Type) error {

go.sum

@@ -42,11 +42,15 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.28.6 h1:cwIxeBttqPN3qkaAjcEcsh8NYr8n
 github.com/aws/aws-sdk-go-v2/service/sts v1.28.6/go.mod h1:FZf1/nKNEkHdGGJP/cI2MoIMquumuRK6ol3QQJNDxmw=
 github.com/aws/smithy-go v1.20.2 h1:tbp628ireGtzcHDDmLT/6ADHidqnwgF57XOXZe6tp4Q=
 github.com/aws/smithy-go v1.20.2/go.mod h1:krry+ya/rV9RDcV/Q16kpu6ypI4K2czasz0NC3qS14E=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
+github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

main.go

@@ -25,7 +25,7 @@ func Run(ctx context.Context) error {
 	}
 	switch len(os.Args) {
 	case 1:
-		return fmt.Errorf("no args")
+		return listServices()
 	case 2:
 		pkgName := os.Args[1]
 		return listMethods(pkgName)
@@ -73,3 +73,19 @@ func listMethods(pkgName string) error {
 	}
 	return nil
 }
+
+func listServices() error {
+	services := make(map[string]struct{})
+	for name := range clientMethods {
+		services[strings.Split(name, "_")[0]] = struct{}{}
+	}
+	names := make([]string, 0)
+	for name := range services {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	for _, name := range names {
+		fmt.Println(name)
+	}
+	return nil
+}