Imports github.com/eclipse/paho.mqtt.golang github.com/project-flogo/core/activity github.com/project-flogo/core/data/coerce github.com/project-flogo/core/data/metadata github.com/project-flogo/core/support/log github.com/project-flogo/core/support/ssl Standard library imports crypto/hmac crypto/sha256 encoding/base64 fmt html/template net/url strconv strings time