Add Hash method to Payload

asynq.go

@@ -6,7 +6,6 @@ import "github.com/go-redis/redis/v7"
 TODOs:
 - [P0] asynqmon kill <taskID>, asynqmon killall <qname>
 - [P0] Pagination for `asynqmon ls` command
-- [P0] Better Payload API - Assigning int or any number type to Payload will be converted to float64 in handler
 - [P0] Show elapsed time for InProgress tasks (asynqmon ls inprogress)
 - [P0] Redis Memory Usage, Connection info in stats
 - [P0] Processed, Failed count for today

payload.go

@@ -19,6 +19,12 @@ func (e *errKeyNotFound) Error() string {
 	return fmt.Sprintf("key %q does not exist", e.key)
 }
 
+// Has reports whether key exists.
+func (p Payload) Has(key string) bool {
+	_, ok := p[key]
+	return ok
+}
+
 // GetString returns a string value if a string type is associated with
 // the key, otherwise reports an error.
 func (p Payload) GetString(key string) (string, error) {

payload_test.go

@@ -8,7 +8,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 )
 
-func TestPayload(t *testing.T) {
+func TestPayloadGet(t *testing.T) {
 	names := []string{"luke", "anakin", "ray"}
 	primes := []int{2, 3, 5, 7, 11, 13, 17}
 	user := map[string]interface{}{"name": "Ken", "score": 3.14}
@@ -125,7 +125,7 @@ func TestPayload(t *testing.T) {
 	}
 }
 
-func TestPayloadWithMarshaling(t *testing.T) {
+func TestPayloadGetWithMarshaling(t *testing.T) {
 	names := []string{"luke", "anakin", "ray"}
 	primes := []int{2, 3, 5, 7, 11, 13, 17}
 	user := map[string]interface{}{"name": "Ken", "score": 3.14}
@@ -252,3 +252,16 @@ func TestPayloadWithMarshaling(t *testing.T) {
 			"duration", gotDuration, err, duration)
 	}
 }
+
+func TestPayloadHas(t *testing.T) {
+	payload := Payload{
+		"user_id": 123,
+	}
+
+	if !payload.Has("user_id") {
+		t.Errorf("Payload.Has(%q) = false, want true", "user_id")
+	}
+	if payload.Has("name") {
+		t.Errorf("Payload.Has(%q) = true, want false", "name")
+	}
+}