// Pull data from the http request, stick it in a channel and close the request.
// We don't do any validation on the data. Always respond with 200.
func recvLogs(w http.ResponseWriter, r *http.Request, recv *receiver.Receiver) {
defer utils.MeasureT("http-receiver", time.Now())
if r.Method != "POST" {
http.Error(w, "Invalid Request", 400)
return
}
user, pass, err := utils.ParseAuth(r)
if err != nil {
fmt.Printf("measure.failed-auth erro=%s user=%s pass=%s user-agent=%s token=%s client=%s\n",
err, user, pass, r.Header.Get("User-Agent"), r.Header.Get("Logplex-Drain-Token"), r.Header.Get("X-Forwarded-For"))
http.Error(w, "Invalid Request", 400)
return
}
b, err := ioutil.ReadAll(r.Body)
r.Body.Close()
if err != nil {
http.Error(w, "Invalid Request", 400)
return
}
recv.Receive(user, pass, b, r.URL.Query())
}
func (h *HttpOutlet) ServeReadBucket(w http.ResponseWriter, r *http.Request) {
// need to extract: token, source, name, time
// https://l2met:[email protected]/buckets/:name
user, pass, err := utils.ParseAuth(r)
if err != nil {
http.Error(w, "Inavalid Authentication", 401)
return
}
// Shortcut so we can quickly access query params.
h.Query = r.URL.Query()
//We need to build the identity of a bucket before we can fetch
//it from the store. Thus, the following attrs are parsed and held
//for the bucket.Id.
src := h.Query.Get("source")
name := h.Query.Get("name")
if len(name) == 0 {
http.Error(w, "Invalid Request. Name is required.", 400)
return
}
res, err := h.parseAssertion("resolution", 60)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
resolution := time.Second * time.Duration(res)
units := h.Query.Get("units")
if len(units) == 0 {
units = bucket.DefaultUnit
}
//The limit and offset are shortcuts to work with the time
//field on the bucket. This makes it easy for the client to not have
//to worry about keeping correct time.
limit, err := h.parseAssertion("limit", 1)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
//The offset is handy because you may not want to take the most recent
//bucket. For instance, the current minute will not have a complete view
//of the data; however, the last minute should.
offset, err := h.parseAssertion("offset", 1)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
//The API supports the ability to assert what metrics should be.
//If the value of the assertion is negative, the assertion can
//be skipped. By default, the value is negative.
countAssertion, err := h.parseAssertion("count", -1)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
meanAssertion, err := h.parseAssertion("mean", -1)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
sumAssertion, err := h.parseAssertion("sum", -1)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
//The tolerance is a way to work with assertions that would like to use
//less than or greater than operators.
tol, err := h.parseAssertion("tol", 0)
if err != nil {
http.Error(w, "Invalid Request.", 400)
return
}
//Build one bucket.Id to share across all the buckets that we fetch
//with respect to the limit.
//We will set the time in proceeding for loop.
id := &bucket.Id{
User: user,
Pass: pass,
Name: name,
Source: src,
Resolution: resolution,
Units: units,
}
resBucket := &bucket.Bucket{Id: id}
anchorTime := time.Now()
for i := 0; i < limit; i++ {
x := time.Duration((i+offset)*-1) * resolution
id.Time = utils.RoundTime(anchorTime.Add(x), resolution)
b := &bucket.Bucket{Id: id}
//Fetch the bucket from our store.
//This will fill in the vals.
h.Store.Get(b)
//We are only returning 1 bucket from the API. The
//bucket will contain an aggregate view of the data based on limit.
resBucket.Add(b)
}
//If any of the assertion values are -1 then they were not
//defined in the request query params. Thus, we only do our assertions
//if the assertion parameter is > 0.
if countAssertion > 0 {
if math.Abs(float64(resBucket.Count()-countAssertion)) > float64(tol) {
http.Error(w, "Count assertion failed.", 404)
return
}
}
if meanAssertion > 0 {
if math.Abs(float64(resBucket.Mean()-float64(meanAssertion))) > float64(tol) {
http.Error(w, "Mean assertion failed.", 404)
return
}
}
if sumAssertion > 0 {
if math.Abs(float64(resBucket.Sum()-float64(sumAssertion))) > float64(tol) {
http.Error(w, "Sum assertion failed.", 404)
return
}
}
//Assuming there was not a failed assertion, we can return the result
//bucket which may contain an aggregate of other buckets via bucket.Add()
utils.WriteJson(w, 200, resBucket)
}