update vendor deps; add optional -timeout flag to runtimevar tool

Makefile

@@ -1,2 +1,4 @@
+GOMOD=vendor
+
 cli:
-	go build -mod vendor -ldflags="-s -w" -o bin/runtimevar cmd/runtimevar/main.go
+	go build -mod $(GOMOD) -ldflags="-s -w" -o bin/runtimevar cmd/runtimevar/main.go

README.md

@@ -15,6 +15,7 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	
 	"github.com/sfomuseum/runtimevar"
 	_ "gocloud.dev/runtimevar/awsparamstore"
 	_ "gocloud.dev/runtimevar/constantvar"
@@ -36,8 +37,20 @@ func main() {
 
 ## Tools
 
+```
+$> make cli
+go build -mod vendor -ldflags="-s -w" -o bin/runtimevar cmd/runtimevar/main.go
+```
+
 ### runtimevar
 
+```
+$> ./bin/runtimevar -h
+Usage of ./bin/runtimevar:
+  -timeout int
+    	The maximum number of second in which a variable can be resolved. If 0 no timeout is applied.
+```
+
 ```
 $> go run cmd/runtimevar/main.go 'constant://?val=hello+world'
 hello world

cmd/runtimevar/main.go

@@ -4,19 +4,31 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"log"
+	"time"
+
 	"github.com/sfomuseum/runtimevar"
 	_ "gocloud.dev/runtimevar/awsparamstore"
 	_ "gocloud.dev/runtimevar/constantvar"
 	_ "gocloud.dev/runtimevar/filevar"
-	"log"
 )
 
 func main() {
 
+	timeout := flag.Int("timeout", 0, "The maximum number of second in which a variable can be resolved. If 0 no timeout is applied.")
+
 	flag.Parse()
 
 	ctx := context.Background()
 
+	if *timeout > 0 {
+
+		c, cancel := context.WithTimeout(ctx, time.Duration(*timeout)*time.Second)
+		defer cancel()
+
+		ctx = c
+	}
+
 	for _, uri := range flag.Args() {
 
 		str_var, err := runtimevar.StringVar(ctx, uri)

go.mod

@@ -3,7 +3,7 @@ module github.com/sfomuseum/runtimevar
 go 1.18
 
 require (
-	github.com/aaronland/go-aws-session v0.1.0
+	github.com/aaronland/go-aws-session v0.2.1
 	gocloud.dev v0.29.0
 )
 

go.sum

@@ -505,8 +505,8 @@ github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:H
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
-github.com/aaronland/go-aws-session v0.1.0 h1:1dj3oQhw8Jtecz8jeT5AAzTul0KbLZ8YhmZbql79SyQ=
-github.com/aaronland/go-aws-session v0.1.0/go.mod h1:M5imkutLPvwnI1Bb38minI3TCy1eSvwP6odMtCmBzqk=
+github.com/aaronland/go-aws-session v0.2.1 h1:sNCuxR1w2ng8fxHsl08AFcAWvZqmN4hmnBbBRNRORd0=
+github.com/aaronland/go-aws-session v0.2.1/go.mod h1:M5imkutLPvwnI1Bb38minI3TCy1eSvwP6odMtCmBzqk=
 github.com/aaronland/go-string v1.0.0 h1:fPHmC1i9JhGzgi4qdCSXKc4xTCaLLe0uvlJMu9dHhco=
 github.com/aaronland/go-string v1.0.0/go.mod h1:URh3Au/fNbM0++WjBseurE3QTp875wiJ9ImrecD+7tI=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=

string.go

@@ -6,8 +6,8 @@ import (
 	"github.com/aaronland/go-aws-session"
 	gc "gocloud.dev/runtimevar"
 	"gocloud.dev/runtimevar/awsparamstore"
-        _ "gocloud.dev/runtimevar/constantvar"
-        _ "gocloud.dev/runtimevar/filevar"
+	_ "gocloud.dev/runtimevar/constantvar"
+	_ "gocloud.dev/runtimevar/filevar"
 	_ "log"
 	"net/url"
 )

vendor/modules.txt

@@ -1,4 +1,4 @@
-# github.com/aaronland/go-aws-session v0.1.0
+# github.com/aaronland/go-aws-session v0.2.1
 ## explicit; go 1.18
 github.com/aaronland/go-aws-session
 # github.com/aaronland/go-string v1.0.0