func (CreateDBCommand) Perform(info CommandInfo) {
dl := cassandra_datalayer.NewDatalayer(info.Cfg)
err := dl.PrepDb("canopy")
if err != nil {
fmt.Println(err)
}
}
func NewPigeonSystem(cfg config.Config) (System, error) {
dl := cassandra_datalayer.NewDatalayer(cfg)
// TODO: share DB connection
conn, err := dl.Connect("canopy")
if err != nil {
return nil, err
}
dlpigeon := conn.PigeonSystem()
return &PigeonSystem{dlpigeon}, nil
}
func (WorkersCommand) Perform(info CommandInfo) {
dl := cassandra_datalayer.NewDatalayer(info.Cfg)
conn, err := dl.Connect("canopy")
if err != nil {
fmt.Println(err)
}
workers, err := conn.PigeonSystem().Workers()
if err != nil {
fmt.Println(err)
}
for _, worker := range workers {
fmt.Println(worker)
}
}
func InitJobServer(cfg config.Config, pigeonServer jobqueue.Server) error {
mailer, err := mail.NewMailClient(cfg)
if err != nil {
return err
}
userCtx := map[string]interface{}{
"cfg": cfg,
"mailer": mailer,
}
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, err := dl.Connect("canopy")
if err != nil {
return err
}
userCtx["db-conn"] = conn
routes := map[string]jobqueue.HandlerFunc{
"api/activate": rest.RestJobWrapper(rest.ApiActivateHandler),
"api/create_devices": rest.RestJobWrapper(rest.ApiCreateDevicesHandler),
"api/create_user": rest.RestJobWrapper(rest.ApiCreateUserHandler),
"GET:api/device/id": rest.RestJobWrapper(rest.GET__api__device__id),
"POST:api/device/id": rest.RestJobWrapper(rest.POST__api__device__id),
"DELETE:api/device/id": rest.RestJobWrapper(rest.DELETE__api__device__id),
"api/device/id/var": rest.RestJobWrapper(rest.GET__api__device__id__var),
"api/devices": rest.RestJobWrapper(rest.GET__api__devices),
"api/finish_share_transaction": rest.RestJobWrapper(rest.POST__api__finish_share_transaction),
"api/info": rest.RestJobWrapper(rest.GET__api__info),
"api/login": rest.RestJobWrapper(rest.POST__api__login),
"api/logout": rest.RestJobWrapper(rest.GET_POST__api__logout),
"GET:api/user/self": rest.RestJobWrapper(rest.GET__api__user__self),
"POST:api/user/self": rest.RestJobWrapper(rest.POST__api__user__self),
"DELETE:api/user/self": rest.RestJobWrapper(rest.DELETE__api__user__self),
"api/reset_password": rest.RestJobWrapper(rest.POST__api__reset_password),
"api/share": rest.RestJobWrapper(rest.POST__api__share),
}
// Register handlers
for msgKey, handler := range routes {
inbox, err := pigeonServer.CreateInbox(msgKey)
if err != nil {
return err
}
inbox.SetUserCtx(userCtx)
inbox.SetHandlerFunc(handler)
}
return nil
}
// Process communication payload from device (via websocket. or REST)
// {
// "device_id" : "9dfe2a00-efe2-45f9-a84c-8afc69caf4e7",
// "sddl" : {
// "optional inbound bool onoff" : {}
// },
// "vars" : {
// "temperature" : 38.0f;
// "gps" : {
// "latitude" : 38.0f;
// "longitude" : 38.0f;
// }
// }
// }
// }
//
// <conn> is an optional datalayer connection. If provided, it is used.
// Otherwise, a datalayer connection is opened by this routine.
//
// <device> is the device that sent the communication. If nil, then either
// <deviceId> or, as a last resort, the payload's "device_id" will be used.
//
// <deviceId> is a string device ID of the device that sent the communication.
// This is ignored if <device> is not nil. If nil, then the payload's
// "device_id" will be used.
//
// <secretKey> is the device's secret key. A secret key is required if
// <device> is nil. Either the value of <secretKey> or, as a last resort, the
// payload's "secret_key" field will be used.
//
// <payload> is a string containing the JSON payload.
func ProcessDeviceComm(
cfg config.Config,
conn datalayer.Connection,
device datalayer.Device,
deviceIdString string,
secretKey string,
payload string) ServiceResponse {
var err error
var out ServiceResponse
var ok bool
canolog.Info("ProcessDeviceComm STARTED")
// If conn is nil, open a datalayer connection.
if conn == nil {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, err = dl.Connect("canopy")
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Could not connect to database: %s", err),
Response: `{"result" : "error", "error_type" : "could_not_connect_to_database"}`,
Device: nil,
}
}
defer conn.Close()
}
// Parse JSON payload
var payloadObj map[string]interface{}
err = json.Unmarshal([]byte(payload), &payloadObj)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Error JSON decoding payload: %s", err),
Response: `{"result" : "error", "error_type" : "decoding_paylaod"}`,
Device: nil,
}
}
// Device can be provided to this routine in one of three ways:
// 1) <device> parameter
// 2) <deviceId> parameter
// 3) "device_id" field in payload
if device == nil && deviceIdString != "" {
// Parse UUID
uuid, err := gocql.ParseUUID(deviceIdString)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Invalid UUID %s: %s", deviceIdString, err),
Response: `{"result" : "error", "error_type" : "device_uuid_required"}`,
Device: nil,
}
}
// Get secret key from payload if necessary
if secretKey == "" {
secretKey, ok = payloadObj["secret_key"].(string)
if !ok {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("\"secret_key\" field must be string"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
}
// lookup device
device, err = conn.LookupDeviceVerifySecretKey(uuid, secretKey)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error looking up or verifying device: %s", err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
}
// Is "device_id" provided in payload?
_, ok = payloadObj["device_id"]
if ok {
deviceIdStringFromPayload, ok := payloadObj["device_id"].(string)
if !ok {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("\"device_id\" field must be string"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
// Parse UUID
uuid, err := gocql.ParseUUID(deviceIdStringFromPayload)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Invalid UUID %s: %s", deviceIdStringFromPayload, err),
Response: `{"result" : "error", "error_type" : "device_uuid_required"}`,
Device: nil,
}
}
// Is <device> already set?
// If not: set it.
// If so: ensure consistency
if device == nil {
// Get secret key from payload if necessary
if secretKey == "" {
secretKey, ok = payloadObj["secret_key"].(string)
if !ok {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("\"secret_key\" field must be string"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
}
// Lookup device
device, err = conn.LookupDeviceVerifySecretKey(uuid, secretKey)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error looking up or verifying device: %s", err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
} else {
if device.ID().String() != deviceIdStringFromPayload {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Inconsistent device ID: %s %s", device.ID().String(), deviceIdStringFromPayload),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
}
}
// If device wasn't provided at all, throw error.
if device == nil {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Device ID expected"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
out.Device = device
device.UpdateLastActivityTime(nil)
// If "sddl" is present, create new / reconfigure Cloud Variables.
_, ok = payloadObj["sddl"]
if ok {
updateMap, ok := payloadObj["sddl"].(map[string]interface{})
if !ok {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Expected object for \"sdd\" field"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
err = device.ExtendSDDL(updateMap)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error updating device's SDDL: %s", err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
}
// If "vars" is present, update value of all Cloud Variables (creating new
// Cloud Variables as necessary)
doc := device.SDDLDocument()
_, ok = payloadObj["vars"]
canolog.Info("vars present:", ok)
if ok {
varsMap, ok := payloadObj["vars"].(map[string]interface{})
if !ok {
return ServiceResponse{
HttpCode: http.StatusBadRequest,
Err: fmt.Errorf("Expected object for \"vars\" field"),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
canolog.Info("varsMap: ", varsMap)
for varName, value := range varsMap {
varDef, err := doc.LookupVarDef(varName)
// TODO: an error doesn't necessarily mean prop should be created?
canolog.Info("Looking up property ", varName)
if varDef == nil {
// Property doesn't exist. Add it.
canolog.Info("Not found. Add property ", varName)
// TODO: What datatype?
// TODO: What other parameters?
varDef, err = doc.AddVarDef(varName, sddl.DATATYPE_FLOAT32)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error creating cloud variable %s: %s", varName, err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
// save modified SDDL
// TODO: Save at the end?
canolog.Info("SetSDDLDocument ", doc)
err = device.SetSDDLDocument(doc)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error updating SDDL: %s", err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
}
// Store property value.
// Convert value datatype
varVal, err := cloudvar.JsonToCloudVarValue(varDef, value)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error converting JSON to propertyValue: %s", err),
Response: `{"result" : "error", "error_type" : "bad_payload"}`,
Device: nil,
}
}
canolog.Info("InsertStample")
err = device.InsertSample(varDef, time.Now(), varVal)
if err != nil {
return ServiceResponse{
HttpCode: http.StatusInternalServerError,
Err: fmt.Errorf("Error inserting sample %s: %s", varName, err),
Response: `{"result" : "error", "error_type" : "database_error"}`,
Device: nil,
}
}
}
}
return ServiceResponse{
HttpCode: http.StatusOK,
Err: nil,
Response: `{"result" : "ok"}`,
Device: device,
}
}
func main() {
cfg := config.NewDefaultConfig("", "", "")
err := cfg.LoadConfig()
if err != nil {
fmt.Printf("Error loading config")
}
err = canolog.Init(".canopy-ops.log")
if err != nil {
fmt.Println(err)
return
}
flag.Parse()
cmd := canopy_ops.FindCommand(cmds, flag.Arg(0))
info := canopy_ops.CommandInfo{
CmdList: cmds,
Cfg: cfg,
Args: flag.Args(),
}
if cmd != nil {
cmd.Perform(info)
} else if flag.Arg(0) == "create-account" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
conn.CreateAccount(flag.Arg(1), flag.Arg(2), flag.Arg(3))
} else if flag.Arg(0) == "delete-account" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
conn.DeleteAccount(flag.Arg(1))
} else if flag.Arg(0) == "create-device" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
account, err := conn.LookupAccount(flag.Arg(1))
if err != nil {
fmt.Println("Unable to lookup account ", flag.Arg(1), ":", err)
return
}
device, err := conn.CreateDevice(flag.Arg(2), nil, "", datalayer.NoAccess)
if err != nil {
fmt.Println("Unable to create device: ", err)
return
}
err = device.SetAccountAccess(account, datalayer.ReadWriteAccess, datalayer.ShareRevokeAllowed)
if err != nil {
fmt.Println("Unable to grant account access to device: ", err)
return
}
} else if flag.Arg(0) == "list-devices" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
account, err := conn.LookupAccount(flag.Arg(1))
if err != nil {
fmt.Println("Unable to lookup account ", flag.Arg(1), ":", err)
return
}
devices, err := account.Devices().DeviceList(0, -1)
if err != nil {
fmt.Println("Error reading devices: ", err)
return
}
for _, device := range devices {
fmt.Printf("%s %s\n", device.ID(), device.Name())
}
} else if flag.Arg(0) == "gen-fake-sensor-data" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
deviceId, err := gocql.ParseUUID(flag.Arg(1))
if err != nil {
fmt.Println("Error parsing UUID: ", flag.Arg(1), ":", err)
return
}
_, err = conn.LookupDevice(deviceId)
if err != nil {
fmt.Println("Device not found: ", flag.Arg(1), ":", err)
return
}
for i := 0; i < 100; i++ {
//val := float64(i % 16);
//t := time.Now().Add(time.Duration(-i)*time.Second)
//err = device.InsertSensorSample(flag.Arg(2), t, val)
//if err != nil {
fmt.Println("Error inserting sample: ", err)
//}
}
} else if flag.Arg(0) == "clear-sensor-data" {
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, _ := dl.Connect("canopy")
conn.ClearSensorData()
} else if flag.Arg(0) == "test-email" {
mailer, err := mail.NewMailClient(cfg)
if err != nil {
fmt.Println("Error initializing mail client: ", err)
return
}
mail := mailer.NewMail()
err = mail.AddTo(flag.Arg(1), "Customer")
if err != nil {
fmt.Println("Invalid recipient: ", flag.Arg(1), err)
return
}
mail.SetSubject("Test email from Canopy")
mail.SetHTML("<b>Canopy Rulez</b>")
mail.SetFrom("*****@*****.**", "The Canopy Team")
err = mailer.Send(mail)
if err != nil {
fmt.Println("Error sending email:", err)
return
}
fmt.Println("Email sent.")
} else if flag.Arg(0) == "migrate-db" {
startVersion := flag.Arg(1)
if startVersion == "" {
fmt.Println("<startVersion> required")
return
}
endVersion := flag.Arg(2)
if endVersion == "" {
fmt.Println("<endVersion> required")
return
}
dl := cassandra_datalayer.NewDatalayer(cfg)
err := dl.MigrateDB("canopy", startVersion, endVersion)
if err != nil {
fmt.Println(err.Error())
}
} else if len(flag.Args()) == 0 {
cmds[0].Perform(info)
} else {
fmt.Println("Unknown command '" + flag.Arg(0) + "'. See 'canopy-ops help'.")
}
}
func NewCanopyWebsocketServer(cfg config.Config, outbox jobqueue.Outbox, pigeonServer jobqueue.Server) func(ws *websocket.Conn) {
// Main websocket server routine.
// This event loop runs until the websocket connection is broken.
return func(ws *websocket.Conn) {
canolog.Websocket("Websocket connection established")
var cnt int32
var device datalayer.Device
var inbox jobqueue.Inbox
var inboxReciever jobqueue.RecieveHandler
lastPingTime := time.Now()
cnt = 0
// connect to cassandra
dl := cassandra_datalayer.NewDatalayer(cfg)
conn, err := dl.Connect("canopy")
if err != nil {
canolog.Error("Could not connect to database: ", err)
return
}
defer conn.Close()
for {
var in string
// check for message from client
ws.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
err := websocket.Message.Receive(ws, &in)
if err == nil {
// success, payload received
cnt++
resp := service.ProcessDeviceComm(cfg, conn, device, "", "", in)
if resp.Device == nil {
canolog.Error("Error processing device communications: ", resp.Err)
} else {
device = resp.Device
if inbox == nil {
deviceIdString := device.ID().String()
inbox, err = pigeonServer.CreateInbox("canopy_ws:" + deviceIdString)
if err != nil {
canolog.Error("Error initializing inbox:", err)
return
}
inboxReciever = jobqueue.NewRecieveHandler()
inbox.SetHandler(inboxReciever)
err = device.UpdateWSConnected(true)
if err != nil {
canolog.Error("Unexpected error: ", err)
}
}
}
} else if err == io.EOF {
canolog.Websocket("Websocket connection closed")
// connection closed
if inbox != nil {
if device != nil {
err = device.UpdateWSConnected(false)
if err != nil {
canolog.Error("Unexpected error: ", err)
}
}
inbox.Close()
}
return
} else if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
// timeout reached, no data for me this time
} else {
canolog.Error("Unexpected error: ", err)
}
// Periodically send blank message
if time.Now().After(lastPingTime.Add(30 * time.Second)) {
err := websocket.Message.Send(ws, "{}")
if err != nil {
canolog.Websocket("Websocket connection closed during ping")
// connection closed
if inbox != nil {
if device != nil {
err = device.UpdateWSConnected(false)
if err != nil {
canolog.Error("Unexpected error: ", err)
}
}
inbox.Close()
}
return
}
canolog.Info("Pinging WS")
lastPingTime = time.Now()
}
if inbox != nil {
msg, _ := inboxReciever.Recieve(time.Duration(100 * time.Millisecond))
if msg != nil {
msgString, err := json.Marshal(msg)
if err != nil {
canolog.Error("Unexpected error: ", err)
}
canolog.Info("Websocket sending", msgString)
canolog.Websocket("Websocket sending: ", msgString)
websocket.Message.Send(ws, msgString)
}
}
}
}
}
func (EraseDBCommand) Perform(info CommandInfo) {
dl := cassandra_datalayer.NewDatalayer(info.Cfg)
dl.EraseDb("canopy")
}
