chore: initial import from sless/shared-sqs (v0.1.14)

- Standalone SQS-service repository
- Multi-tenant message queue service, AWS SQS compatible
- Based on GoAws, with mutable tenants, auth, WebUI, Redis persistence
- Ready for independent development and deployment
- See doc/ and README.md for architecture and usage

app/models/constants.go

@@ -0,0 +1,38 @@
+package models
+
+import (
+	"time"
+)
+
+var BaseXmlns = "http://queue.amazonaws.com/doc/2012-11-05/"
+var BaseResponseMetadata = ResponseMetadata{RequestId: "00000000-0000-0000-0000-000000000000"}
+
+var DeduplicationPeriod = 5 * time.Minute
+
+var AvailableQueueAttributes = map[string]bool{
+	"DelaySeconds":                          true,
+	"MaximumMessageSize":                    true,
+	"MessageRetentionPeriod":                true,
+	"Policy":                                true,
+	"ReceiveMessageWaitTimeSeconds":         true,
+	"VisibilityTimeout":                     true,
+	"RedrivePolicy":                         true,
+	"RedriveAllowPolicy":                    true,
+	"ApproximateNumberOfMessages":           true,
+	"ApproximateNumberOfMessagesDelayed":    true,
+	"ApproximateNumberOfMessagesNotVisible": true,
+	"CreatedTimestamp":                      true,
+	"LastModifiedTimestamp":                 true,
+	"QueueArn":                              true,
+}
+
+const (
+	ProtocolSQS     Protocol = "sqs"
+	ProtocolHTTP    Protocol = "http"
+	ProtocolHTTPS   Protocol = "https"
+	ProtocolDefault Protocol = "default"
+)
+
+const (
+	MessageStructureJSON MessageStructure = "json"
+)