Renamed influxdb to influxdata in Godeps
This commit is contained in:
206
vendor/github.com/influxdata/influxdb/client/README.md
generated
vendored
Normal file
206
vendor/github.com/influxdata/influxdb/client/README.md
generated
vendored
Normal file
@@ -0,0 +1,206 @@
|
||||
# InfluxDB Client
|
||||
|
||||
[](http://godoc.org/github.com/influxdb/influxdb/client)
|
||||
|
||||
## Description
|
||||
|
||||
A Go client library written and maintained by the **InfluxDB** team.
|
||||
This package provides convenience functions to read and write time series data.
|
||||
It uses the HTTP protocol to communicate with your **InfluxDB** cluster.
|
||||
|
||||
|
||||
## Getting Started
|
||||
|
||||
### Connecting To Your Database
|
||||
|
||||
Connecting to an **InfluxDB** database is straightforward. You will need a host
|
||||
name, a port and the cluster user credentials if applicable. The default port is 8086.
|
||||
You can customize these settings to your specific installation via the
|
||||
**InfluxDB** configuration file.
|
||||
|
||||
Thought not necessary for experimentation, you may want to create a new user
|
||||
and authenticate the connection to your database.
|
||||
|
||||
For more information please check out the
|
||||
[Cluster Admin Docs](http://influxdb.com/docs/v0.9/query_language/database_administration.html).
|
||||
|
||||
For the impatient, you can create a new admin user _bubba_ by firing off the
|
||||
[InfluxDB CLI](https://github.com/influxdb/influxdb/blob/master/cmd/influx/main.go).
|
||||
|
||||
```shell
|
||||
influx
|
||||
> create user bubba with password 'bumblebeetuna'
|
||||
> grant all privileges to bubba
|
||||
```
|
||||
|
||||
And now for good measure set the credentials in you shell environment.
|
||||
In the example below we will use $INFLUX_USER and $INFLUX_PWD
|
||||
|
||||
Now with the administrivia out of the way, let's connect to our database.
|
||||
|
||||
NOTE: If you've opted out of creating a user, you can omit Username and Password in
|
||||
the configuration below.
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import "github.com/influxdb/influxdb/client"
|
||||
|
||||
const (
|
||||
MyHost = "localhost"
|
||||
MyPort = 8086
|
||||
MyDB = "square_holes"
|
||||
MyMeasurement = "shapes"
|
||||
)
|
||||
|
||||
func main() {
|
||||
u, err := url.Parse(fmt.Sprintf("http://%s:%d", MyHost, MyPort))
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
conf := client.Config{
|
||||
URL: *u,
|
||||
Username: os.Getenv("INFLUX_USER"),
|
||||
Password: os.Getenv("INFLUX_PWD"),
|
||||
}
|
||||
|
||||
con, err := client.NewClient(conf)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
dur, ver, err := con.Ping()
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
log.Printf("Happy as a Hippo! %v, %s", dur, ver)
|
||||
}
|
||||
|
||||
```
|
||||
|
||||
### Inserting Data
|
||||
|
||||
Time series data aka *points* are written to the database using batch inserts.
|
||||
The mechanism is to create one or more points and then create a batch aka *batch points*
|
||||
and write these to a given database and series. A series is a combination of a
|
||||
measurement (time/values) and a set of tags.
|
||||
|
||||
In this sample we will create a batch of a 1,000 points. Each point has a time and
|
||||
a single value as well as 2 tags indicating a shape and color. We write these points
|
||||
to a database called _square_holes_ using a measurement named _shapes_.
|
||||
|
||||
NOTE: You can specify a RetentionPolicy as part of the batch points. If not
|
||||
provided InfluxDB will use the database _default_ retention policy. By default, the _default_
|
||||
retention policy never deletes any data it contains.
|
||||
|
||||
```go
|
||||
func writePoints(con *client.Client) {
|
||||
var (
|
||||
shapes = []string{"circle", "rectangle", "square", "triangle"}
|
||||
colors = []string{"red", "blue", "green"}
|
||||
sampleSize = 1000
|
||||
pts = make([]client.Point, sampleSize)
|
||||
)
|
||||
|
||||
rand.Seed(42)
|
||||
for i := 0; i < sampleSize; i++ {
|
||||
pts[i] = client.Point{
|
||||
Measurement: "shapes",
|
||||
Tags: map[string]string{
|
||||
"color": strconv.Itoa(rand.Intn(len(colors))),
|
||||
"shape": strconv.Itoa(rand.Intn(len(shapes))),
|
||||
},
|
||||
Fields: map[string]interface{}{
|
||||
"value": rand.Intn(sampleSize),
|
||||
},
|
||||
Time: time.Now(),
|
||||
Precision: "s",
|
||||
}
|
||||
}
|
||||
|
||||
bps := client.BatchPoints{
|
||||
Points: pts,
|
||||
Database: MyDB,
|
||||
RetentionPolicy: "default",
|
||||
}
|
||||
_, err := con.Write(bps)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
|
||||
### Querying Data
|
||||
|
||||
One nice advantage of using **InfluxDB** the ability to query your data using familiar
|
||||
SQL constructs. In this example we can create a convenience function to query the database
|
||||
as follows:
|
||||
|
||||
```go
|
||||
// queryDB convenience function to query the database
|
||||
func queryDB(con *client.Client, cmd string) (res []client.Result, err error) {
|
||||
q := client.Query{
|
||||
Command: cmd,
|
||||
Database: MyDB,
|
||||
}
|
||||
if response, err := con.Query(q); err == nil {
|
||||
if response.Error() != nil {
|
||||
return res, response.Error()
|
||||
}
|
||||
res = response.Results
|
||||
}
|
||||
return
|
||||
}
|
||||
```
|
||||
|
||||
#### Creating a Database
|
||||
```go
|
||||
_, err := queryDB(con, fmt.Sprintf("create database %s", MyDB))
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
```
|
||||
|
||||
#### Count Records
|
||||
```go
|
||||
q := fmt.Sprintf("select count(%s) from %s", "value", MyMeasurement)
|
||||
res, err := queryDB(con, q)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
count := res[0].Series[0].Values[0][1]
|
||||
log.Printf("Found a total of `%v records", count)
|
||||
|
||||
```
|
||||
|
||||
#### Find the last 10 _shapes_ records
|
||||
|
||||
```go
|
||||
q := fmt.Sprintf("select * from %s limit %d", MyMeasurement, 20)
|
||||
res, err = queryDB(con, q)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
for i, row := range res[0].Series[0].Values {
|
||||
t, err := time.Parse(time.RFC3339, row[0].(string))
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
val, err := row[1].(json.Number).Int64()
|
||||
log.Printf("[%2d] %s: %03d\n", i, t.Format(time.Stamp), val)
|
||||
}
|
||||
```
|
||||
|
||||
## Go Docs
|
||||
|
||||
Please refer to
|
||||
[http://godoc.org/github.com/influxdb/influxdb/client](http://godoc.org/github.com/influxdb/influxdb/client)
|
||||
for documentation.
|
||||
|
||||
## See Also
|
||||
|
||||
You can also examine how the client library is used by the
|
||||
[InfluxDB CLI](https://github.com/influxdb/influxdb/blob/master/cmd/influx/main.go).
|
583
vendor/github.com/influxdata/influxdb/client/influxdb.go
generated
vendored
Normal file
583
vendor/github.com/influxdata/influxdb/client/influxdb.go
generated
vendored
Normal file
@@ -0,0 +1,583 @@
|
||||
package client
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"time"
|
||||
|
||||
"github.com/influxdb/influxdb/influxql"
|
||||
"github.com/influxdb/influxdb/tsdb"
|
||||
)
|
||||
|
||||
// Query is used to send a command to the server. Both Command and Database are required.
|
||||
type Query struct {
|
||||
Command string
|
||||
Database string
|
||||
}
|
||||
|
||||
// Config is used to specify what server to connect to.
|
||||
// URL: The URL of the server connecting to.
|
||||
// Username/Password are optional. They will be passed via basic auth if provided.
|
||||
// UserAgent: If not provided, will default "InfluxDBClient",
|
||||
// Timeout: If not provided, will default to 0 (no timeout)
|
||||
type Config struct {
|
||||
URL url.URL
|
||||
Username string
|
||||
Password string
|
||||
UserAgent string
|
||||
Timeout time.Duration
|
||||
}
|
||||
|
||||
// Client is used to make calls to the server.
|
||||
type Client struct {
|
||||
url url.URL
|
||||
username string
|
||||
password string
|
||||
httpClient *http.Client
|
||||
userAgent string
|
||||
}
|
||||
|
||||
const (
|
||||
ConsistencyOne = "one"
|
||||
ConsistencyAll = "all"
|
||||
ConsistencyQuorum = "quorum"
|
||||
ConsistencyAny = "any"
|
||||
)
|
||||
|
||||
// NewClient will instantiate and return a connected client to issue commands to the server.
|
||||
func NewClient(c Config) (*Client, error) {
|
||||
client := Client{
|
||||
url: c.URL,
|
||||
username: c.Username,
|
||||
password: c.Password,
|
||||
httpClient: &http.Client{Timeout: c.Timeout},
|
||||
userAgent: c.UserAgent,
|
||||
}
|
||||
if client.userAgent == "" {
|
||||
client.userAgent = "InfluxDBClient"
|
||||
}
|
||||
return &client, nil
|
||||
}
|
||||
|
||||
// SetAuth will update the username and passwords
|
||||
func (c *Client) SetAuth(u, p string) {
|
||||
c.username = u
|
||||
c.password = p
|
||||
}
|
||||
|
||||
// Query sends a command to the server and returns the Response
|
||||
func (c *Client) Query(q Query) (*Response, error) {
|
||||
u := c.url
|
||||
|
||||
u.Path = "query"
|
||||
values := u.Query()
|
||||
values.Set("q", q.Command)
|
||||
values.Set("db", q.Database)
|
||||
u.RawQuery = values.Encode()
|
||||
|
||||
req, err := http.NewRequest("GET", u.String(), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
req.Header.Set("User-Agent", c.userAgent)
|
||||
if c.username != "" {
|
||||
req.SetBasicAuth(c.username, c.password)
|
||||
}
|
||||
|
||||
resp, err := c.httpClient.Do(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var response Response
|
||||
dec := json.NewDecoder(resp.Body)
|
||||
dec.UseNumber()
|
||||
decErr := dec.Decode(&response)
|
||||
|
||||
// ignore this error if we got an invalid status code
|
||||
if decErr != nil && decErr.Error() == "EOF" && resp.StatusCode != http.StatusOK {
|
||||
decErr = nil
|
||||
}
|
||||
// If we got a valid decode error, send that back
|
||||
if decErr != nil {
|
||||
return nil, decErr
|
||||
}
|
||||
// If we don't have an error in our json response, and didn't get statusOK, then send back an error
|
||||
if resp.StatusCode != http.StatusOK && response.Error() == nil {
|
||||
return &response, fmt.Errorf("received status code %d from server", resp.StatusCode)
|
||||
}
|
||||
return &response, nil
|
||||
}
|
||||
|
||||
// Write takes BatchPoints and allows for writing of multiple points with defaults
|
||||
// If successful, error is nil and Response is nil
|
||||
// If an error occurs, Response may contain additional information if populated.
|
||||
func (c *Client) Write(bp BatchPoints) (*Response, error) {
|
||||
c.url.Path = "write"
|
||||
|
||||
var b bytes.Buffer
|
||||
for _, p := range bp.Points {
|
||||
if p.Raw != "" {
|
||||
if _, err := b.WriteString(p.Raw); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
} else {
|
||||
for k, v := range bp.Tags {
|
||||
if p.Tags == nil {
|
||||
p.Tags = make(map[string]string, len(bp.Tags))
|
||||
}
|
||||
p.Tags[k] = v
|
||||
}
|
||||
|
||||
if _, err := b.WriteString(p.MarshalString()); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if err := b.WriteByte('\n'); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
req, err := http.NewRequest("POST", c.url.String(), &b)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
req.Header.Set("Content-Type", "")
|
||||
req.Header.Set("User-Agent", c.userAgent)
|
||||
if c.username != "" {
|
||||
req.SetBasicAuth(c.username, c.password)
|
||||
}
|
||||
params := req.URL.Query()
|
||||
params.Add("db", bp.Database)
|
||||
params.Add("rp", bp.RetentionPolicy)
|
||||
params.Add("precision", bp.Precision)
|
||||
params.Add("consistency", bp.WriteConsistency)
|
||||
req.URL.RawQuery = params.Encode()
|
||||
|
||||
resp, err := c.httpClient.Do(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
var response Response
|
||||
body, err := ioutil.ReadAll(resp.Body)
|
||||
if err != nil && err.Error() != "EOF" {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if resp.StatusCode != http.StatusNoContent && resp.StatusCode != http.StatusOK {
|
||||
var err = fmt.Errorf(string(body))
|
||||
response.Err = err
|
||||
return &response, err
|
||||
}
|
||||
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// Ping will check to see if the server is up
|
||||
// Ping returns how long the request took, the version of the server it connected to, and an error if one occurred.
|
||||
func (c *Client) Ping() (time.Duration, string, error) {
|
||||
now := time.Now()
|
||||
u := c.url
|
||||
u.Path = "ping"
|
||||
|
||||
req, err := http.NewRequest("GET", u.String(), nil)
|
||||
if err != nil {
|
||||
return 0, "", err
|
||||
}
|
||||
req.Header.Set("User-Agent", c.userAgent)
|
||||
if c.username != "" {
|
||||
req.SetBasicAuth(c.username, c.password)
|
||||
}
|
||||
|
||||
resp, err := c.httpClient.Do(req)
|
||||
if err != nil {
|
||||
return 0, "", err
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
version := resp.Header.Get("X-Influxdb-Version")
|
||||
return time.Since(now), version, nil
|
||||
}
|
||||
|
||||
// Dump connects to server and retrieves all data stored for specified database.
|
||||
// If successful, Dump returns the entire response body, which is an io.ReadCloser
|
||||
func (c *Client) Dump(db string) (io.ReadCloser, error) {
|
||||
u := c.url
|
||||
u.Path = "dump"
|
||||
values := u.Query()
|
||||
values.Set("db", db)
|
||||
u.RawQuery = values.Encode()
|
||||
|
||||
req, err := http.NewRequest("GET", u.String(), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
req.Header.Set("User-Agent", c.userAgent)
|
||||
if c.username != "" {
|
||||
req.SetBasicAuth(c.username, c.password)
|
||||
}
|
||||
|
||||
resp, err := c.httpClient.Do(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
return resp.Body, fmt.Errorf("HTTP Protocol error %d", resp.StatusCode)
|
||||
}
|
||||
return resp.Body, nil
|
||||
}
|
||||
|
||||
// Structs
|
||||
|
||||
// Result represents a resultset returned from a single statement.
|
||||
type Result struct {
|
||||
Series []influxql.Row
|
||||
Err error
|
||||
}
|
||||
|
||||
// MarshalJSON encodes the result into JSON.
|
||||
func (r *Result) MarshalJSON() ([]byte, error) {
|
||||
// Define a struct that outputs "error" as a string.
|
||||
var o struct {
|
||||
Series []influxql.Row `json:"series,omitempty"`
|
||||
Err string `json:"error,omitempty"`
|
||||
}
|
||||
|
||||
// Copy fields to output struct.
|
||||
o.Series = r.Series
|
||||
if r.Err != nil {
|
||||
o.Err = r.Err.Error()
|
||||
}
|
||||
|
||||
return json.Marshal(&o)
|
||||
}
|
||||
|
||||
// UnmarshalJSON decodes the data into the Result struct
|
||||
func (r *Result) UnmarshalJSON(b []byte) error {
|
||||
var o struct {
|
||||
Series []influxql.Row `json:"series,omitempty"`
|
||||
Err string `json:"error,omitempty"`
|
||||
}
|
||||
|
||||
dec := json.NewDecoder(bytes.NewBuffer(b))
|
||||
dec.UseNumber()
|
||||
err := dec.Decode(&o)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.Series = o.Series
|
||||
if o.Err != "" {
|
||||
r.Err = errors.New(o.Err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Response represents a list of statement results.
|
||||
type Response struct {
|
||||
Results []Result
|
||||
Err error
|
||||
}
|
||||
|
||||
// MarshalJSON encodes the response into JSON.
|
||||
func (r *Response) MarshalJSON() ([]byte, error) {
|
||||
// Define a struct that outputs "error" as a string.
|
||||
var o struct {
|
||||
Results []Result `json:"results,omitempty"`
|
||||
Err string `json:"error,omitempty"`
|
||||
}
|
||||
|
||||
// Copy fields to output struct.
|
||||
o.Results = r.Results
|
||||
if r.Err != nil {
|
||||
o.Err = r.Err.Error()
|
||||
}
|
||||
|
||||
return json.Marshal(&o)
|
||||
}
|
||||
|
||||
// UnmarshalJSON decodes the data into the Response struct
|
||||
func (r *Response) UnmarshalJSON(b []byte) error {
|
||||
var o struct {
|
||||
Results []Result `json:"results,omitempty"`
|
||||
Err string `json:"error,omitempty"`
|
||||
}
|
||||
|
||||
dec := json.NewDecoder(bytes.NewBuffer(b))
|
||||
dec.UseNumber()
|
||||
err := dec.Decode(&o)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.Results = o.Results
|
||||
if o.Err != "" {
|
||||
r.Err = errors.New(o.Err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Error returns the first error from any statement.
|
||||
// Returns nil if no errors occurred on any statements.
|
||||
func (r Response) Error() error {
|
||||
if r.Err != nil {
|
||||
return r.Err
|
||||
}
|
||||
for _, result := range r.Results {
|
||||
if result.Err != nil {
|
||||
return result.Err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Point defines the fields that will be written to the database
|
||||
// Measurement, Time, and Fields are required
|
||||
// Precision can be specified if the time is in epoch format (integer).
|
||||
// Valid values for Precision are n, u, ms, s, m, and h
|
||||
type Point struct {
|
||||
Measurement string
|
||||
Tags map[string]string
|
||||
Time time.Time
|
||||
Fields map[string]interface{}
|
||||
Precision string
|
||||
Raw string
|
||||
}
|
||||
|
||||
// MarshalJSON will format the time in RFC3339Nano
|
||||
// Precision is also ignored as it is only used for writing, not reading
|
||||
// Or another way to say it is we always send back in nanosecond precision
|
||||
func (p *Point) MarshalJSON() ([]byte, error) {
|
||||
point := struct {
|
||||
Measurement string `json:"measurement,omitempty"`
|
||||
Tags map[string]string `json:"tags,omitempty"`
|
||||
Time string `json:"time,omitempty"`
|
||||
Fields map[string]interface{} `json:"fields,omitempty"`
|
||||
Precision string `json:"precision,omitempty"`
|
||||
}{
|
||||
Measurement: p.Measurement,
|
||||
Tags: p.Tags,
|
||||
Fields: p.Fields,
|
||||
Precision: p.Precision,
|
||||
}
|
||||
// Let it omit empty if it's really zero
|
||||
if !p.Time.IsZero() {
|
||||
point.Time = p.Time.UTC().Format(time.RFC3339Nano)
|
||||
}
|
||||
return json.Marshal(&point)
|
||||
}
|
||||
|
||||
func (p *Point) MarshalString() string {
|
||||
return tsdb.NewPoint(p.Measurement, p.Tags, p.Fields, p.Time).String()
|
||||
}
|
||||
|
||||
// UnmarshalJSON decodes the data into the Point struct
|
||||
func (p *Point) UnmarshalJSON(b []byte) error {
|
||||
var normal struct {
|
||||
Measurement string `json:"measurement"`
|
||||
Tags map[string]string `json:"tags"`
|
||||
Time time.Time `json:"time"`
|
||||
Precision string `json:"precision"`
|
||||
Fields map[string]interface{} `json:"fields"`
|
||||
}
|
||||
var epoch struct {
|
||||
Measurement string `json:"measurement"`
|
||||
Tags map[string]string `json:"tags"`
|
||||
Time *int64 `json:"time"`
|
||||
Precision string `json:"precision"`
|
||||
Fields map[string]interface{} `json:"fields"`
|
||||
}
|
||||
|
||||
if err := func() error {
|
||||
var err error
|
||||
dec := json.NewDecoder(bytes.NewBuffer(b))
|
||||
dec.UseNumber()
|
||||
if err = dec.Decode(&epoch); err != nil {
|
||||
return err
|
||||
}
|
||||
// Convert from epoch to time.Time, but only if Time
|
||||
// was actually set.
|
||||
var ts time.Time
|
||||
if epoch.Time != nil {
|
||||
ts, err = EpochToTime(*epoch.Time, epoch.Precision)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
p.Measurement = epoch.Measurement
|
||||
p.Tags = epoch.Tags
|
||||
p.Time = ts
|
||||
p.Precision = epoch.Precision
|
||||
p.Fields = normalizeFields(epoch.Fields)
|
||||
return nil
|
||||
}(); err == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
dec := json.NewDecoder(bytes.NewBuffer(b))
|
||||
dec.UseNumber()
|
||||
if err := dec.Decode(&normal); err != nil {
|
||||
return err
|
||||
}
|
||||
normal.Time = SetPrecision(normal.Time, normal.Precision)
|
||||
p.Measurement = normal.Measurement
|
||||
p.Tags = normal.Tags
|
||||
p.Time = normal.Time
|
||||
p.Precision = normal.Precision
|
||||
p.Fields = normalizeFields(normal.Fields)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Remove any notion of json.Number
|
||||
func normalizeFields(fields map[string]interface{}) map[string]interface{} {
|
||||
newFields := map[string]interface{}{}
|
||||
|
||||
for k, v := range fields {
|
||||
switch v := v.(type) {
|
||||
case json.Number:
|
||||
jv, e := v.Float64()
|
||||
if e != nil {
|
||||
panic(fmt.Sprintf("unable to convert json.Number to float64: %s", e))
|
||||
}
|
||||
newFields[k] = jv
|
||||
default:
|
||||
newFields[k] = v
|
||||
}
|
||||
}
|
||||
return newFields
|
||||
}
|
||||
|
||||
// BatchPoints is used to send batched data in a single write.
|
||||
// Database and Points are required
|
||||
// If no retention policy is specified, it will use the databases default retention policy.
|
||||
// If tags are specified, they will be "merged" with all points. If a point already has that tag, it is ignored.
|
||||
// If time is specified, it will be applied to any point with an empty time.
|
||||
// Precision can be specified if the time is in epoch format (integer).
|
||||
// Valid values for Precision are n, u, ms, s, m, and h
|
||||
type BatchPoints struct {
|
||||
Points []Point `json:"points,omitempty"`
|
||||
Database string `json:"database,omitempty"`
|
||||
RetentionPolicy string `json:"retentionPolicy,omitempty"`
|
||||
Tags map[string]string `json:"tags,omitempty"`
|
||||
Time time.Time `json:"time,omitempty"`
|
||||
Precision string `json:"precision,omitempty"`
|
||||
WriteConsistency string `json:"-"`
|
||||
}
|
||||
|
||||
// UnmarshalJSON decodes the data into the BatchPoints struct
|
||||
func (bp *BatchPoints) UnmarshalJSON(b []byte) error {
|
||||
var normal struct {
|
||||
Points []Point `json:"points"`
|
||||
Database string `json:"database"`
|
||||
RetentionPolicy string `json:"retentionPolicy"`
|
||||
Tags map[string]string `json:"tags"`
|
||||
Time time.Time `json:"time"`
|
||||
Precision string `json:"precision"`
|
||||
}
|
||||
var epoch struct {
|
||||
Points []Point `json:"points"`
|
||||
Database string `json:"database"`
|
||||
RetentionPolicy string `json:"retentionPolicy"`
|
||||
Tags map[string]string `json:"tags"`
|
||||
Time *int64 `json:"time"`
|
||||
Precision string `json:"precision"`
|
||||
}
|
||||
|
||||
if err := func() error {
|
||||
var err error
|
||||
if err = json.Unmarshal(b, &epoch); err != nil {
|
||||
return err
|
||||
}
|
||||
// Convert from epoch to time.Time
|
||||
var ts time.Time
|
||||
if epoch.Time != nil {
|
||||
ts, err = EpochToTime(*epoch.Time, epoch.Precision)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
bp.Points = epoch.Points
|
||||
bp.Database = epoch.Database
|
||||
bp.RetentionPolicy = epoch.RetentionPolicy
|
||||
bp.Tags = epoch.Tags
|
||||
bp.Time = ts
|
||||
bp.Precision = epoch.Precision
|
||||
return nil
|
||||
}(); err == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
if err := json.Unmarshal(b, &normal); err != nil {
|
||||
return err
|
||||
}
|
||||
normal.Time = SetPrecision(normal.Time, normal.Precision)
|
||||
bp.Points = normal.Points
|
||||
bp.Database = normal.Database
|
||||
bp.RetentionPolicy = normal.RetentionPolicy
|
||||
bp.Tags = normal.Tags
|
||||
bp.Time = normal.Time
|
||||
bp.Precision = normal.Precision
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// utility functions
|
||||
|
||||
// Addr provides the current url as a string of the server the client is connected to.
|
||||
func (c *Client) Addr() string {
|
||||
return c.url.String()
|
||||
}
|
||||
|
||||
// helper functions
|
||||
|
||||
// EpochToTime takes a unix epoch time and uses precision to return back a time.Time
|
||||
func EpochToTime(epoch int64, precision string) (time.Time, error) {
|
||||
if precision == "" {
|
||||
precision = "s"
|
||||
}
|
||||
var t time.Time
|
||||
switch precision {
|
||||
case "h":
|
||||
t = time.Unix(0, epoch*int64(time.Hour))
|
||||
case "m":
|
||||
t = time.Unix(0, epoch*int64(time.Minute))
|
||||
case "s":
|
||||
t = time.Unix(0, epoch*int64(time.Second))
|
||||
case "ms":
|
||||
t = time.Unix(0, epoch*int64(time.Millisecond))
|
||||
case "u":
|
||||
t = time.Unix(0, epoch*int64(time.Microsecond))
|
||||
case "n":
|
||||
t = time.Unix(0, epoch)
|
||||
default:
|
||||
return time.Time{}, fmt.Errorf("Unknown precision %q", precision)
|
||||
}
|
||||
return t, nil
|
||||
}
|
||||
|
||||
// SetPrecision will round a time to the specified precision
|
||||
func SetPrecision(t time.Time, precision string) time.Time {
|
||||
switch precision {
|
||||
case "n":
|
||||
case "u":
|
||||
return t.Round(time.Microsecond)
|
||||
case "ms":
|
||||
return t.Round(time.Millisecond)
|
||||
case "s":
|
||||
return t.Round(time.Second)
|
||||
case "m":
|
||||
return t.Round(time.Minute)
|
||||
case "h":
|
||||
return t.Round(time.Hour)
|
||||
}
|
||||
return t
|
||||
}
|
Reference in New Issue
Block a user