// Init is called to initialize the application.
func Init(configKey string) {
// Init the configuration system.
if err := cfg.Init(cfg.EnvProvider{Namespace: configKey}); err != nil {
fmt.Println("Error initalizing configuration system", err)
os.Exit(1)
}
// Init the log system.
logLevel := func() int {
ll, err := cfg.Int(cfgLoggingLevel)
if err != nil {
return log.USER
}
return ll
}
log.Init(os.Stderr, logLevel)
// Log all the configuration options
log.User("startup", "Init", "\n\nConfig Settings: %s\n%s\n", configKey, cfg.Log())
// Load user defined custom headers. HEADERS should be key:value,key:value
if hs, err := cfg.String("HEADERS"); err == nil {
hdrs := strings.Split(hs, ",")
for _, hdr := range hdrs {
if kv := strings.Split(hdr, ":"); len(kv) == 2 {
log.User("startup", "Init", "User Headers : %s:%s", kv[0], kv[1])
app.userHeaders[kv[0]] = kv[1]
}
}
}
}
// Import gets data from report on failed import, transform it and send it to pillar
func importOnlyFailedRecords() { //dbsource source.Sourcer, limit int, offset int, orderby string, thisStrategy string, reportOnFailedRecords bool) {
log.User(uuid, "sponge.importOnlyFailedRecords", "### Reading file of data to import.")
// get the data that needs to be imported
tables, err := report.ReadReport(options.Reportdbfile) //map[model]map[id]interface{}
if err != nil {
log.Error(uuid, "sponge.importOnlyFailedRecords", err, "Getting the rows that will be imported")
}
var data []map[string]interface{}
for table, ids := range tables {
if len(ids) < 1 { // only one ID
// Get the data
log.User(uuid, "sponge.importOnlyFailedRecords", "### Reading data for entity '%s'. \n", table)
data, err = dbsource.GetData(table, &options) //options.offset, options.limit, options.orderby, options.query)
} else {
log.User(uuid, "sponge.importOnlyFailedRecords", "### Reading data for entity '%s', quering '%s'. \n", table, ids)
data, err = dbsource.GetQueryData(table, &options, ids)
}
if err != nil && options.ReportOnFailedRecords {
report.Record(table, ids, "Failing getting data", err)
}
// transform and get data into pillar
process(table, data)
}
}
func importFromDB(collections []string) {
// var data []map[string]interface{}
for _, name := range collections { // Reads through all the collections whose transformations are in the strategy configuration file
foreignEntity := source.GetForeignEntity(name)
log.User(uuid, "sponge.importAll", "### Reading data to import from %s into collection '%s'. \n", foreignEntity, name)
// Get the data
data, err := dbsource.GetData(name, &options) //options.offset, options.limit, options.orderby, "")
if err != nil {
log.Error(uuid, "sponge.importAll", err, "Get external data for collection %s.", name)
//RECORD to report about failing modelName
if options.ReportOnFailedRecords {
report.Record(name, "", "Failing to get data.", err)
}
continue
}
log.User(uuid, "sponge.importAll", "### Transforming data and sending it to Coral. \n")
//transform and send to pillar the data
process(name, data)
}
}
func process(coralName string, data []map[string]interface{}) {
// Transform the data row by row
log.User(uuid, "sponge.process", "# Transforming data to the coral schema.\n")
log.User(uuid, "sponge.process", "# And importing %v documents.", len(data))
// Initialize benchmarking for current table
start := time.Now()
blockStart := time.Now()
blockSize := int64(1000) // number of documents between each report
documents := int64(0)
totalDocuments := int64(len(data))
for _, row := range data {
// output benchmarking for each block of documents
if documents%blockSize == 0 && documents > 0 {
// calculate stats
percentComplete := float64(documents) / float64(totalDocuments) * float64(100)
msSinceStart := time.Since(start).Nanoseconds() / int64(1000000)
msSinceBlock := time.Since(blockStart).Nanoseconds() / int64(1000000)
timeRemaining := int64(float64(time.Since(start).Seconds()) / float64(percentComplete) * float64(100))
//log stats
log.User(uuid, "sponge.process", "%v%% (%v/%v imported) %vms, %vms avg - last %v in %vms, %vms avg -- est time remaining %vs\n", int64(percentComplete), documents, totalDocuments, msSinceStart, msSinceStart/documents, blockSize, msSinceBlock, msSinceBlock/blockSize, int64(timeRemaining))
blockStart = time.Now()
}
documents = documents + 1
// transform the row
id, newRows, err := fiddler.TransformRow(row, coralName)
if err != nil {
log.Error(uuid, "sponge.process", err, "Error when transforming the row %s.", row)
//RECORD to report about failing transformation
if options.ReportOnFailedRecords {
report.Record(coralName, id, "Failing transform data", err)
}
}
// Usually newRows only will have a document but in the case that we have subcollections
// we may get more than one document from a transformation
for _, newRow := range newRows {
log.Dev(uuid, "sponge.process", "Transforming: %v into %v.", row, newRow)
// send the row to pillar
err = coral.AddRow(newRow, coralName)
if err != nil {
log.Error(uuid, "sponge.process", err, "Error when adding a row") // thae row %v to %s.", string(newRow), modelName)
//RECORD to report about failing adding row to coral db
if options.ReportOnFailedRecords {
report.Record(coralName, id, "Failing add row to coral", err)
}
}
}
}
}
// Job implements the Jobber interface so task can be managed.
func (t *Task) Job(context interface{}) error {
log.User(context, "Job", "Started : **********")
time.Sleep(time.Second)
log.User(context, "Job", "Completed : **********")
return nil
}
// Run performs the execution of the specified job.
func Run(context interface{}, timeout time.Duration, job Jobber) error {
log.User(context, "Run", "Started : Timeout[%v]", timeout)
// Init the runner for use.
if initRunner(timeout) {
return errors.New("Already running")
}
// When the task is done reset everything.
defer resetRunner()
// We want to receive all interrupt based signals.
signal.Notify(runner.sigChan, os.Interrupt)
// Launch the processor.
go processor(context, job)
for {
select {
case <-runner.sigChan:
// Interrupt event signaled by the operation system.
log.User(context, "Run", "Interrupt Received")
// Flag we received the signal.
runner.recvShutdown = true
// Close the channel to signal to the processor
// it needs to shutdown.
close(runner.shutdown)
// No need to process anymore events.
signal.Stop(runner.sigChan)
case <-runner.kill:
// We have taken too much time. Kill the app hard.
log.User(context, "Run", "Completed : Timedout")
return ErrTimeout
case err := <-runner.complete:
// Everything completed within the time given.
log.User(context, "Run", "Completed : Task Result : %v", err)
if runner.recvShutdown {
return ErrSignaled
}
return err
}
}
}
// Handle is our mechanism for mounting Handlers for a given HTTP verb and path
// pair, this makes for really easy, convenient routing.
func (a *App) Handle(verb, path string, handler Handler, mw ...Middleware) {
// The function to execute for each request.
h := func(w http.ResponseWriter, r *http.Request, p map[string]string) {
start := time.Now()
var dbConn *db.DB
if app.useMongo {
dbConn = db.NewMGO()
}
c := Context{
DB: dbConn,
ResponseWriter: w,
Request: r,
Params: p,
SessionID: uuid.New(),
}
if app.useMongo {
defer c.DB.CloseMGO()
}
log.User(c.SessionID, "Request", "Started : Method[%s] URL[%s] RADDR[%s]", c.Request.Method, c.Request.URL.Path, c.Request.RemoteAddr)
// Wrap the handler in all associated middleware.
wrap := func(h Handler) Handler {
// Wrap up the application-wide first...
for i := len(a.mw) - 1; i >= 0; i-- {
h = a.mw[i](h)
}
// Then wrap with our route specific ones.
for i := len(mw) - 1; i >= 0; i-- {
h = mw[i](h)
}
return h
}
// Call the wrapped handler and handle any possible error.
if err := wrap(handler)(&c); err != nil {
c.Error(err)
}
log.User(c.SessionID, "Request", "Completed : Status[%d] Duration[%s]", c.Status, time.Since(start))
}
// Add this handler for the specified verb and route.
a.TreeMux.Handle(verb, path, h)
}
// Init is called to initialize the application.
func Init(configKey string) {
// Init the configuration system.
if err := cfg.Init(cfg.EnvProvider{Namespace: configKey}); err != nil {
fmt.Println("Error initalizing configuration system", err)
os.Exit(1)
}
// Init the log system.
logLevel := func() int {
ll, err := cfg.Int(cfgLoggingLevel)
if err != nil {
return log.USER
}
return ll
}
log.Init(os.Stderr, logLevel)
// Log all the configuration options
log.User("startup", "Init", "\n\nConfig Settings: %s\n%s\n", configKey, cfg.Log())
// Init MongoDB if configured.
if _, err := cfg.String(cfgMongoHost); err == nil {
app.useMongo = true
cfg := mongo.Config{
Host: cfg.MustString(cfgMongoHost),
AuthDB: cfg.MustString(cfgMongoAuthDB),
DB: cfg.MustString(cfgMongoDB),
User: cfg.MustString(cfgMongoUser),
Password: cfg.MustString(cfgMongoPassword),
}
if err := mongo.Init(cfg); err != nil {
log.Error("startup", "Init", err, "Initializing MongoDB")
os.Exit(1)
}
}
// Load user defined custom headers. HEADERS should be key:value,key:value
if hs, err := cfg.String("HEADERS"); err == nil {
hdrs := strings.Split(hs, ",")
for _, hdr := range hdrs {
if kv := strings.Split(hdr, ":"); len(kv) == 2 {
log.User("startup", "Init", "User Headers : %s:%s", kv[0], kv[1])
app.userHeaders[kv[0]] = kv[1]
}
}
}
}
func main() {
const context = "startup"
// Create the configuration.
cfg := udp.Config{
NetType: "udp4",
Addr: ":6000",
ConnHandler: udpConnHandler{},
ReqHandler: udpReqHandler{},
RespHandler: udpRespHandler{},
OptIntPool: udp.OptIntPool{
RecvMinPoolSize: func() int { return 2 },
RecvMaxPoolSize: func() int { return 100 },
SendMinPoolSize: func() int { return 2 },
SendMaxPoolSize: func() int { return 100 },
},
}
// Create a new UDP value.
u, err := udp.New(context, "Sample", cfg)
if err != nil {
log.Error(context, "main", err, "Creating udp")
return
}
// Start accepting client data.
if err := u.Start(context); err != nil {
log.Error(context, "main", err, "Starting udp")
return
}
// Defer the stop on shutdown.
defer u.Stop(context)
log.User(context, "main", "Waiting for data on: %s", u.Addr())
// Listen for an interrupt signal from the OS.
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, os.Interrupt)
<-sigChan
// Use netcat to test the server.
// nc -4u localhost 6000 < test.hex
log.User(context, "main", "Shutting down")
}
// GetData returns the raw data from the external source, entityname entity
func (m MongoDB) GetData(entityname string, options *Options) ([]map[string]interface{}, error) { // offset int, limit int, orderby string, query string) ([]map[string]interface{}, bool, error) { //(*sql.Rows, error) {
var data []map[string]interface{}
//fields := strategy.GetEntityForeignFields(entityname) //[]]map[string]string
// open a connection
session, err := m.initSession()
if err != nil {
log.Error(uuid, "mongodb.getdata", err, "Initializing mongo session.")
return nil, err
}
defer m.closeSession(session)
credentialD, ok := credential.(str.CredentialDatabase)
if !ok {
err = fmt.Errorf("Error asserting type CredentialDatabase from interface Credential.")
log.Error(uuid, "mongodb.getdata", err, "Asserting Type CredentialDatabase")
return nil, err
}
cred := mgo.Credential{
Username: credentialD.Username,
Password: credentialD.Password,
}
err = session.Login(&cred)
if err != nil {
log.Error(uuid, "mongodb.getdata", err, "Login mongo session.")
return nil, err
}
db := session.DB(credentialD.Database)
col := db.C(entityname)
var mquery map[string]interface{}
if options.Query != "" {
err = json.Unmarshal([]byte(options.Query), &mquery)
if err != nil {
log.Error(uuid, "mongodb.getdata", err, "Unmarshalling query %v", options.Query)
return nil, err
}
}
//.Select(fieldsToGet) <--- I'm not using Select because SOME FIELDS IN THE TRANSLATION FILE ARE NOT THE RIGHT ONES TO DO THE SELECT. For example: context.object.0.uri
err = col.Find(mquery).Skip(options.Offset).Limit(options.Limit).All(&data)
if err != nil {
log.Error(uuid, "mongodb.getdata", err, "Getting collection %s.", entityname)
return nil, err
}
log.User(uuid, "mongodb.getdata", "### Flattening documents to be able to translate them. \n")
flattenData, err := flattenizeData(data)
if err != nil {
log.Error(uuid, "mongodb.getdata", err, "Normalizing data from mongo to fit into fiddler.")
return nil, err
}
return flattenData, nil
}
func main() {
const context = "main"
// Create a task value for execution.
t := Task{
Name: "test task",
}
// Start the job running with a specified duration.
if err := runner.Run(context, time.Second, &t); err != nil {
switch err {
case runner.ErrTimeout:
// The task did not finish within the specified duration.
log.Error(context, "main", err, "Task timeout")
case runner.ErrSignaled:
// The user hit <control> c and we shutdown early.
log.Error(context, "main", err, "Shutdown early")
default:
// An error occurred in the processing of the task.
log.Error(context, "main", err, "Processing error")
}
os.Exit(1)
}
log.User(context, "main", "Completed")
}
func init() {
// This is being added to showcase configuration.
os.Setenv("KIT_LOGGING_LEVEL", "1")
os.Setenv("KIT_MIN_ROUTINES", "1")
os.Setenv("KIT_MAX_ROUTINES", "10")
// Init the configuration system.
if err := cfg.Init(cfg.EnvProvider{Namespace: configKey}); err != nil {
fmt.Println("Error initalizing configuration system", err)
os.Exit(1)
}
// Init the log system.
logLevel := func() int {
ll, err := cfg.Int(cfgLoggingLevel)
if err != nil {
return log.USER
}
return ll
}
log.Init(os.Stderr, logLevel)
// Log all the configuration options
log.User("startup", "init", "\n\nConfig Settings: %s\n%s\n", configKey, cfg.Log())
}
// TestLogLevelDEV tests the basic functioning of the logger in DEV mode.
func TestLogLevelDEV(t *testing.T) {
t.Log("Given the need to log DEV and USER messages.")
{
t.Log("\tWhen we set the logging level to DEV.")
{
log.Init(&logdest, func() int { return log.DEV })
resetLog()
defer displayLog()
dt := time.Now().Format("2006/01/02 15:04:05")
log1 := fmt.Sprintf("%s log_test.go:81: DEV : context : FuncName : Message 1 no format\n", dt)
log2 := fmt.Sprintf("%s log_test.go:82: USER : context : FuncName : Message 2 with format: A, B\n", dt)
log3 := fmt.Sprintf("%s log_test.go:83: ERROR : context : FuncName : An error : Message 3 with format: C, D\n", dt)
log.Dev("context", "FuncName", "Message 1 no format")
log.User("context", "FuncName", "Message 2 with format: %s, %s", "A", "B")
log.Error("context", "FuncName", errors.New("An error"), "Message 3 with format: %s, %s", "C", "D")
if logdest.String() == log1+log2+log3 {
t.Logf("\t\t%v : Should log the expected trace line.", succeed)
} else {
t.Log("***>", logdest.String())
t.Log("***>", log1+log2+log3)
t.Errorf("\t\t%v : Should log the expected trace line.", failed)
}
}
}
}
// Respond sends JSON to the client.
// If code is StatusNoContent, v is expected to be nil.
func (c *Context) Respond(data interface{}, code int) {
log.User(c.SessionID, "api : Respond", "Started : Code[%d]", code)
c.Status = code
if code == http.StatusNoContent {
c.WriteHeader(http.StatusNoContent)
return
}
// Set application default header values.
c.Header().Set("Content-Type", "application/json")
// Load any user defined header values.
if app.userHeaders != nil {
for key, value := range app.userHeaders {
log.User("startup", "Init", "Setting user headers : %s:%s", key, value)
c.Header().Set(key, value)
}
}
c.WriteHeader(code)
// Marshal the data into a JSON string.
jsonData, err := json.Marshal(data)
if err != nil {
jsonData = []byte("{}")
}
// Look for a JSONP marker
if cb := c.Request.URL.Query().Get("callback"); cb != "" {
// We need to wrap the result in a function call.
// callback_value({"data_1": "hello world", "data_2": ["the","sun","is","shining"]});
fmt.Fprintf(c, "%s(%s)", cb, string(jsonData))
log.User(c.SessionID, "api : Respond", "Completed")
return
}
// We can send the result straight through.
fmt.Fprintf(c, string(jsonData))
log.User(c.SessionID, "api : Respond", "Completed")
}
// Midware handles the request logging.
func Midware(next web.Handler) web.Handler {
// Create the handler that will be attached in the middleware chain.
h := func(c *web.Context) error {
log.User(c.SessionID, "log : Midware", "Started : Method[%s] URL[%s] RADDR[%s]", c.Request.Method, c.Request.URL.Path, c.Request.RemoteAddr)
if err := next(c); err != nil {
return err
}
log.User(c.SessionID, "log : Midware", "Completed : Status[%d] Duration[%s]", c.Status, time.Since(c.Now))
return nil
}
return h
}
// Respond sends JSON to the client.
// If code is StatusNoContent, v is expected to be nil.
func (c *Context) Respond(data interface{}, code int) {
log.User(c.SessionID, "api : Respond", "Started : Code[%d]", code)
c.Status = code
if code == http.StatusNoContent {
c.WriteHeader(http.StatusNoContent)
return
}
// Set application default header values.
c.Header().Set("Content-Type", "application/json")
// Load any user defined header values.
if app.userHeaders != nil {
for key, value := range app.userHeaders {
log.User("startup", "Init", "Setting user headers : %s:%s", key, value)
c.Header().Set(key, value)
}
}
c.WriteHeader(code)
// Look for a JSONP marker
if cb := c.Request.URL.Query().Get("callback"); cb != "" {
// We need to wrap the result in a function call.
// callback_value({"data_1": "hello world", "data_2": ["the","sun","is","shining"]});
b := bytes.NewBufferString(cb + "(")
json.NewEncoder(b).Encode(data)
b.WriteString(")")
fmt.Fprintf(c, b.String())
} else {
// We can send the result straight through.
json.NewEncoder(c).Encode(data)
}
log.User(c.SessionID, "api : Respond", "Completed")
}
// ExampleDev shows how to use the log package.
func ExampleDev(t *testing.T) {
// Init the log package for stdout. Hardcode the logging level
// function to use USER level logging.
log.Init(os.Stdout, func() int { return log.USER })
// Write a simple log line with no formatting.
log.User("context", "ExampleDev", "This is a simple line with no formatting")
// Write a simple log line with formatting.
log.User("context", "ExampleDev", "This is a simple line with no formatting %d", 10)
// Write a message error for the user.
log.Error("context", "ExampleDev", errors.New("A user error"), "testing error")
// Write a message error for the user with formatting.
log.Error("context", "ExampleDev", errors.New("A user error"), "testing error %s", "value")
// Write a message error for the developer only.
log.Dev("context", "ExampleDev", "Formatting %v", 42)
}
func importFromAPI(collections []string) {
pageAfter := ""
log.User(uuid, "sponge.importFromAPI", "### Reading data from API. \n")
api, ok := dbsource.(source.API)
if !ok {
err := fmt.Errorf("Error asserting sourcer into source.API.")
log.Error(uuid, "sponge.importFromAPI", err, "Asserting type for source.API")
}
var err error
var data []map[string]interface{}
var nextPageAfter string
var pollingInterval time.Duration
if pollEnvVar, err := strconv.Atoi(os.Getenv("POLLING_INTERVAL")); err != nil || pollEnvVar == 0 {
pollingInterval = time.Duration(options.TimeWaiting) * time.Second
} else {
pollingInterval = time.Duration(pollEnvVar) * time.Second
}
for true {
data, nextPageAfter, err = api.GetFireHoseData(pageAfter)
if err != nil {
log.Error(uuid, "sponge.importFromAPI", err, "Getting data from API")
return
}
if data != nil {
processAPI(collections, data)
pageAfter = nextPageAfter
}
if data == nil {
log.User(uuid, "sponge.importFromAPI", "Waiting %s seconds for more data.", pollingInterval)
time.Sleep(pollingInterval) // sleep timeWaiting seconds
}
}
}
// CreateIndex will read the strategy file and create index that are mentioned there for each collection
func CreateIndex(collection string) {
log.User(uuid, "sponge.createindex", "### Create Index.")
//create index for everybody
if collection == "" {
// get data from strategy file
tables := fiddler.GetCollections()
// for each table
for t := range tables {
log.User(uuid, "sponge.createindex", "### Create index for collection %s.", tables[t])
coral.CreateIndex(tables[t])
}
return
}
log.User(uuid, "sponge.createindex", "### Create index for collection %s.", collection)
//create index only for collection
coral.CreateIndex(collection)
}
func main() {
log.User("startup", "Init", "Revision : %q", GitRevision)
log.User("startup", "Init", "Version : %q", GitVersion)
log.User("startup", "Init", "Build Date : %q", BuildDate)
log.User("startup", "Init", "Int Version : %q", IntVersion)
log.User("startup", "Init", "Go Version : %q", runtime.Version())
log.User("startup", "Init", "Go Compiler : %q", runtime.Compiler)
log.User("startup", "Init", "Go ARCH : %q", runtime.GOARCH)
log.User("startup", "Init", "Go OS : %q", runtime.GOOS)
handlers.Version.GitRevision = GitRevision
handlers.Version.GitVersion = GitVersion
handlers.Version.BuildDate = BuildDate
handlers.Version.IntVersion = IntVersion
// These are the absolute read and write timeouts.
const (
// ReadTimeout covers the time from when the connection is accepted to when the
// request body is fully read.
readTimeout = 10 * time.Second
// WriteTimeout normally covers the time from the end of the request header read
// to the end of the response write.
writeTimeout = 30 * time.Second
)
host := cfg.MustString(cfgHost)
log.User("startup", "Init", "Binding web service to %s", host)
if err := web.Run(host, routes.API(), readTimeout, writeTimeout); err != nil {
log.Error("shutdown", "Init", err, "App Shutdown")
os.Exit(1)
}
log.User("shutdown", "Init", "App Shutdown")
}
// CheckShutdown checks the shutdown flag to determine
// if we have been asked to interrupt processing.
func CheckShutdown(context interface{}) bool {
select {
case <-runner.shutdown:
// We have been asked to shutdown.
log.User(context, "CheckShutdown", "Shutdown Early")
return true
default:
// We have not been asked to shutdown.
return false
}
}
// API returns a handler for a set of routes.
func API() http.Handler {
mongoURI := cfg.MustURL(cfgMongoURI)
// The web framework middleware for Mongo is using the name of the
// database as the name of the master session by convention. So use
// cfg.DB as the second argument when creating the master session.
if err := db.RegMasterSession("startup", mongoURI.Path, mongoURI.String(), 25*time.Second); err != nil {
log.Error("startup", "Init", err, "Initializing MongoDB")
os.Exit(1)
}
w := web.New(logm.Midware, errorm.Midware)
publicKey, err := cfg.String(cfgAuthPublicKey)
if err != nil || publicKey == "" {
log.User("startup", "Init", "%s is missing, internal authentication is disabled", cfgAuthPublicKey)
}
// If the public key is provided then add the auth middleware or fail using
// the provided public key.
if publicKey != "" {
log.Dev("startup", "Init", "Initializing Auth")
authm, err := authm.Midware(publicKey, authm.MidwareOpts{})
if err != nil {
log.Error("startup", "Init", err, "Initializing Auth")
os.Exit(1)
}
// Apply the authentication middleware on top of the application as the
// first middleware.
w.Use(authm)
}
// Add the Mongo and Cayley middlewares possibly after the auth middleware.
w.Use(mongo.Midware(mongoURI), cayley.Midware(mongoURI))
if cors, err := cfg.Bool(cfgEnableCORS); err == nil && cors {
log.Dev("startup", "Init", "Initializing CORS : CORS Enabled")
w.Use(w.CORS())
} else {
log.Dev("startup", "Init", "CORS Disabled")
}
log.Dev("startup", "Init", "Initalizing routes")
routes(w)
return w
}
// processor provides the main program logic for the program.
func processor(context interface{}, job Jobber) {
log.User(context, "processor", "Started")
// Variable to store any error that occurs.
var err error
// Defer the send on the channel so it happens
// regardless of how this function terminates.
defer func() {
// Capture any potential panic.
if r := recover(); r != nil {
log.User(context, "processor", "Panic : %v", r)
}
// Signal the goroutine we have shutdown.
runner.complete <- err
}()
// Run the job.
err = job.Job(context)
log.User(context, "processor", "Completed")
}
// Process is used to handle the processing of the message. This method
// is called on a routine from a pool of routines.
func (tcpReqHandler) Process(context interface{}, r *tcp.Request) {
log.Dev(context, "Process", "Started : IP[%s] Length[%d] ReadAt[%v]", r.TCPAddr.String(), r.Length, r.ReadAt)
log.User(context, "Process", "Data : %s", string(r.Data))
resp := tcp.Response{
TCPAddr: r.TCPAddr,
Data: []byte("GOT IT\n"),
Length: 7,
Complete: func(rsp *tcp.Response) {
log.Dev(context, "Process", "*****************> %v", rsp)
},
}
r.TCP.Do(context, &resp)
log.Dev(context, "Process", "Completed")
}
// ImportType gets ony data related to table, transform it and send it to pillar
func importType(coralEntity string) { //dbsource source.Sourcer, limit int, offset int, orderby string, query string, modelName string, reportOnFailedRecords bool) {
foreignEntity := source.GetForeignEntity(coralEntity)
// Get the data
log.User(uuid, "sponge.importTable", "### Reading data from table '%s'.", foreignEntity)
data, err := dbsource.GetData(foreignEntity, &options) //options.offset, options.limit, options.orderby, options.query)
if err != nil {
log.Error(uuid, "sponge.importAll", err, "Get external data for table %s.", foreignEntity)
//RECORD to report about failing modelName
if options.ReportOnFailedRecords {
report.Record(foreignEntity, "", "Failing to get data", err)
}
return
}
// Transform and send to pillar
process(coralEntity, data)
}
// Import gets ALL data, transform it and send it to pillar
func importAll() {
//dbsource source.Sourcer, limit int, offset int, orderby string, reportOnFailedRecords bool) {
log.User(uuid, "sponge.importAll", "### Reading tables to import from strategy file.")
//Get all the collections's names that we have in the strategy json file
collections, err := source.GetEntities()
if err != nil {
log.Error(uuid, "sponge.importAll", err, "Get collections's names.")
return
}
if dbsource.IsWebService() {
importFromAPI(collections)
return
}
importFromDB(collections)
}
func main() {
const context = "main"
const totalWork = 100
wg.Add(totalWork)
// Create the configuration.
cfg := pool.Config{
MinRoutines: func() int { return cfg.MustInt(cfgMinRoutines) },
MaxRoutines: func() int { return cfg.MustInt(cfgMaxRoutines) },
}
// Create a pool.
p, err := pool.New(context, "test", cfg)
if err != nil {
log.Error(context, "main", err, "Creating pool")
return
}
// Look at stats for the work.
go func() {
for {
time.Sleep(250 * time.Millisecond)
log.User(context, "Stats", "%#v", p.Stats())
}
}()
// Perform some work.
for i := 0; i < totalWork; i++ {
p.Do(context, &Task{Name: strconv.Itoa(i)})
}
// Wait until all the work is complete.
wg.Wait()
// Shutdown the pool.
p.Shutdown(context)
}
func routes(w *web.Web) {
// Create a new app group which will be for internal functions that may have
// an optional layer of auth added to it.
internal := w.Group()
// Now we will load in the public key from the config. If found, we'll add a
// middleware to all internal endpoints that will ensure that we validate the
// requests coming in.
publicKey, err := cfg.String(cfgAuthPublicKey)
if err != nil || publicKey == "" {
log.User("startup", "Init", "%s is missing, internal authentication is disabled", cfgAuthPublicKey)
}
// If the public key is provided then add the auth middleware or fail using
// the provided public key.
if publicKey != "" {
log.Dev("startup", "Init", "Initializing Auth")
// We are allowing the query string to act as the access token provider
// because this service has endpoints that are accessed directly currently
// and we need someway to authenticate to these endpoints.
authmOpts := auth.MidwareOpts{
AllowQueryString: true,
}
authm, err := auth.Midware(publicKey, authmOpts)
if err != nil {
log.Error("startup", "Init", err, "Initializing Auth")
os.Exit(1)
}
// Apply the authentication middleware on top of the application as the
// first middleware.
internal.Use(authm)
}
// global
internal.Handle("GET", "/v1/version", handlers.Version.List)
// forms
internal.Handle("POST", "/v1/form", handlers.Form.Upsert)
internal.Handle("GET", "/v1/form", handlers.Form.List)
internal.Handle("PUT", "/v1/form/:id", handlers.Form.Upsert)
internal.Handle("PUT", "/v1/form/:id/status/:status", handlers.Form.UpdateStatus)
internal.Handle("GET", "/v1/form/:id", handlers.Form.Retrieve)
internal.Handle("DELETE", "/v1/form/:id", handlers.Form.Delete)
// form aggregations
internal.Handle("GET", "/v1/form/:form_id/digest", handlers.Aggregation.Digest)
internal.Handle("GET", "/v1/form/:form_id/aggregate", handlers.Aggregation.Aggregate)
internal.Handle("GET", "/v1/form/:form_id/aggregate/:group_id", handlers.Aggregation.AggregateGroup)
internal.Handle("GET", "/v1/form/:form_id/aggregate/:group_id/submission", handlers.Aggregation.SubmissionGroup)
// form submissions
internal.Handle("GET", "/v1/form/:form_id/submission", handlers.FormSubmission.Search)
internal.Handle("GET", "/v1/form/:form_id/submission/:id", handlers.FormSubmission.Retrieve)
internal.Handle("PUT", "/v1/form/:form_id/submission/:id/status/:status", handlers.FormSubmission.UpdateStatus)
internal.Handle("POST", "/v1/form/:form_id/submission/:id/flag/:flag", handlers.FormSubmission.AddFlag)
internal.Handle("DELETE", "/v1/form/:form_id/submission/:id/flag/:flag", handlers.FormSubmission.RemoveFlag)
internal.Handle("PUT", "/v1/form/:form_id/submission/:id/answer/:answer_id", handlers.FormSubmission.UpdateAnswer)
internal.Handle("DELETE", "/v1/form/:form_id/submission/:id", handlers.FormSubmission.Delete)
// temporal route to get CSV file - TO DO : move into a different service
internal.Handle("GET", "/v1/form/:form_id/submission/export", handlers.FormSubmission.Download)
// form form galleries
internal.Handle("GET", "/v1/form/:form_id/gallery", handlers.FormGallery.RetrieveForForm)
// form galleries
internal.Handle("GET", "/v1/form_gallery/:id", handlers.FormGallery.Retrieve)
internal.Handle("PUT", "/v1/form_gallery/:id", handlers.FormGallery.Update)
internal.Handle("POST", "/v1/form_gallery/:id/submission/:submission_id/:answer_id", handlers.FormGallery.AddAnswer)
internal.Handle("DELETE", "/v1/form_gallery/:id/submission/:submission_id/:answer_id", handlers.FormGallery.RemoveAnswer)
// Create a new app group which will be for external functions that will need
// to be publically exposed.
external := w.Group()
external.Handle("POST", "/v1/form/:form_id/submission", handlers.FormSubmission.Create)
}
// GetFireHoseData use the firehose to constantly GET data from the web service
func (a API) GetFireHoseData(pageAfter string) ([]map[string]interface{}, string, error) {
var (
flattenData []map[string]interface{}
nextPageAfter string
err error
)
// Get the credentials to connect to the API
cred, err := strategy.GetCredential("service", "foreign")
if err != nil {
log.Error(uuid, "api.getFirehoseData", err, "Getting credentials with API")
}
// Assert Type into a credential API struct
credA, ok := cred.(str.CredentialService)
if !ok {
log.Error(uuid, "api.getFirehoseData", err, "Asserting type.")
}
// TO DO: THIS IS VERY WAPO API HARCODED!
url := connectionAPI(pageAfter)
log.User(uuid, "api.getFirehoseData", "Querying URL %s", url)
// Build the request
req, err := http.NewRequest("GET", url.String(), nil)
if err != nil {
log.Error(uuid, "api.getFirehoseData", err, "New request.")
return nil, pageAfter, err
}
req.Header.Add("User-Agent", credA.GetUserAgent())
// For control over HTTP client headers,
// redirect policy, and other settings,
// create a Client
// A Client is an HTTP client
client := &http.Client{}
// Send the request via a client
// Do sends an HTTP request and
// returns an HTTP response
resp, err := client.Do(req)
if err != nil {
log.Error(uuid, "api.getFirehoseData", err, "Doing a call to API.")
return nil, pageAfter, err
}
if resp.StatusCode != 200 {
err := fmt.Errorf("Bad Request %v", resp.Status)
log.Error(uuid, "api.getFirehoseData", err, "Doing a call to API.")
return nil, pageAfter, err
}
// Callers should close resp.Body
// when done reading from it
// Defer the closing of the body
defer resp.Body.Close()
var d map[string]interface{}
// Use json.Decode for reading streams of JSON data
if err = json.NewDecoder(resp.Body).Decode(&d); err != nil {
log.Error(uuid, "api.getFirehoseData", err, "Decoding data from API.")
return nil, pageAfter, err
}
recordsField := credA.GetRecordsFieldName()
// Emtpy records means there are no more data to send
if d[recordsField] == nil {
return nil, pageAfter, err
}
records, ok := d[recordsField].([]interface{}) //this are all the entries
if !ok {
log.Error(uuid, "api.getFirehoseData", err, "Asserting type.")
return nil, pageAfter, err
}
var r []map[string]interface{}
for _, i := range records { // all the entries in the type we need
r = append(r, i.(map[string]interface{}))
}
flattenData, err = flattenizeData(r)
if err != nil {
log.Error(uuid, "api.getfirehosedata", err, "Normalizing data from api to fit into fiddler.")
return nil, nextPageAfter, err
}
nextPageField := credA.GetNextPageField()
if d[nextPageField] != nil {
switch pf := d[nextPageField].(type) {
case float64:
nextPageAfter = strconv.FormatFloat(pf, 'f', 6, 64)
case string:
nextPageAfter = pf
default:
log.User(uuid, "api.getfirehosedata", "Do not know what is the type asserting for the Next Pagination value.")
}
}
return flattenData, nextPageAfter, err
}
// API returns a handler for a set of routes.
func API() http.Handler {
w := web.New(logm.Midware, errorm.Midware)
publicKey, err := cfg.String(cfgAuthPublicKey)
if err != nil || publicKey == "" {
log.User("startup", "Init", "%s is missing, internal authentication is disabled", cfgAuthPublicKey)
}
// If the public key is provided then add the auth middleware or fail using
// the provided public key.
if publicKey != "" {
log.Dev("startup", "Init", "Initializing Auth")
authm, err := authm.Midware(publicKey, authm.MidwareOpts{})
if err != nil {
log.Error("startup", "Init", err, "Initializing Auth")
os.Exit(1)
}
// Apply the authentication middleware on top of the application as the
// first middleware.
w.Use(authm)
}
platformPrivateKey, err := cfg.String(cfgPlatformPrivateKey)
if err != nil || platformPrivateKey == "" {
log.User("startup", "Init", "%s is missing, downstream platform authentication is disabled", cfgPlatformPrivateKey)
}
// If the platformPrivateKey is provided, then we should generate the token
// signing function to be used when composing requests down to the platform.
if platformPrivateKey != "" {
log.Dev("startup", "Init", "Initializing Downstream Platform Auth")
signer, err := auth.NewSigner(platformPrivateKey)
if err != nil {
log.Error("startup", "Init", err, "Initializing Downstream Platform Auth")
os.Exit(1)
}
// Requests can now be signed with the given signer function which we will
// save on the application wide context. In the event that a function
// requires a call down to a downstream platform, we will include a signed
// header using the signer function here.
w.Ctx["signer"] = signer
}
if cors, err := cfg.Bool(cfgEnableCORS); err == nil && cors {
log.Dev("startup", "Init", "Initializing CORS : CORS Enabled")
w.Use(w.CORS())
} else {
log.Dev("startup", "Init", "CORS Disabled")
}
// We need the URL for the services Sponged and Xeniad that needs to be running.
spongedURL, err = cfg.String(cfgSpongedURL)
if err != nil || spongedURL == "" {
log.Error("startup", "Init", err, "Service Sponged needs to be setup.")
os.Exit(1)
}
w.Ctx["spongedURL"] = cfg.MustURL(cfgSpongedURL).String()
xeniadURL, err = cfg.String(cfgXeniadURL)
if err != nil || xeniadURL == "" {
log.Error("startup", "Init", err, "Service Xeniad needs to be setup.")
os.Exit(1)
}
w.Ctx["xeniadURL "] = cfg.MustURL(cfgXeniadURL).String()
log.Dev("startup", "Init", "Initalizing routes")
routes(w)
return w
}
