influxdb3

package
v0.7.0 Latest Latest
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 Go to latest Published: Apr 16, 2024 License: MIT Imports: 30 Imported by: 12

Documentation

Overview

Package influxdb3 provides client for InfluxDB server.

Index

Examples

Constants

This section is empty.

Variables

View Source 
var DefaultQueryOptions = QueryOptions{
	QueryType: SQL,
}

DefaultQueryOptions specifies default query options

View Source 
var DefaultWriteOptions = WriteOptions{
	Precision:     lineprotocol.Nanosecond,
	GzipThreshold: 1_000,
}

DefaultWriteOptions specifies default write options

Functions

func ReplaceURLProtocolWithPort 

func ReplaceURLProtocolWithPort(url string) (string, *bool)

ReplaceURLProtocolWithPort removes the "http://" or "https://" protocol from the given URL and replaces it with the port number. Currently, Apache Arrow does not support the "http://" or "https://" protocol in the URL, so this function is used to remove it. If a port number is already present in the URL, only the protocol is removed. The function also returns a boolean value indicating whether the communication is safe or unsafe. - If the URL starts with "https://", the communication is considered safe, and the returned boolean value will be true. - If the URL starts with "http://", the communication is considered unsafe, and the returned boolean value will be false. - If the URL does not start with either "http://" or "https://", the returned boolean value will be nil.

Parameters:

  • url: The URL to process.

Returns:

  • The modified URL with the protocol replaced by the port.
  • A boolean value indicating the safety of communication (true for safe, false for unsafe) or nil if not detected.

Types

type Client 

type Client struct {
	// contains filtered or unexported fields
}

Client implements an InfluxDB client.

func New 

func New(config ClientConfig) (*Client, error)

New creates new Client with given config, where `Host` and `Token` are mandatory.

Example 
client, err := New(ClientConfig{
	Host:     "https://us-east-1-1.aws.cloud2.influxdata.com",
	Token:    "my-token",
	Database: "my-database",
})
if err != nil {
	log.Fatal(err)
}
defer client.Close()

Output:

func NewFromConnectionString added in v0.3.0 

func NewFromConnectionString(connectionString string) (*Client, error)

NewFromConnectionString creates new Client from the specified connection string. Parameters:

  • connectionString: connection string in URL format.

Supported query parameters:

  • token - authentication token (required)
  • org - organization name
  • database - database (bucket) name
  • precision - timestamp precision when writing data
  • gzipThreshold - payload size threshold for gzipping data
Example 
client, err := NewFromConnectionString("https://us-east-1-1.aws.cloud2.influxdata.com/?token=my-token&database=my-database")
if err != nil {
	log.Fatal(err)
}
defer client.Close()

Output:

func NewFromEnv added in v0.3.0 

func NewFromEnv() (*Client, error)

NewFromEnv creates new Client instance from environment variables. Supported variables:

  • INFLUX_HOST - cloud/server URL (required)
  • INFLUX_TOKEN - authentication token (required)
  • INFLUX_ORG - organization name
  • INFLUX_DATABASE - database (bucket) name
  • INFLUX_PRECISION - timestamp precision when writing data
  • INFLUX_GZIP_THRESHOLD - payload size threshold for gzipping data
Example 
client, err := NewFromEnv()
if err != nil {
	log.Fatal(err)
}
defer client.Close()

Output:

func (*Client) Close 

func (c *Client) Close() error

Close closes all idle connections.

func (*Client) Query 

func (c *Client) Query(ctx context.Context, query string, options ...QueryOption) (*QueryIterator, error)

Query queries data from InfluxDB IOx. Parameters:

  • ctx: The context.Context to use for the request.
  • query: The query string to execute.
  • options: The optional query options. See QueryOption for available options.

Returns:

  • A custom iterator (*QueryIterator).
  • An error, if any.
Example 
client, err := NewFromEnv()
if err != nil {
	log.Fatal(err)
}
defer client.Close()

// query
iterator, err := client.Query(context.Background(),
	"SELECT count(*) FROM weather WHERE time >= now() - interval '5 minutes'")

for iterator.Next() {
	// process the result
}

// query with custom header
iterator, err = client.Query(context.Background(),
	"SELECT count(*) FROM stat WHERE time >= now() - interval '5 minutes'",
	WithHeader("X-trace-ID", "#0122"))

for iterator.Next() {
	// process the result
}

Output:

func (*Client) QueryWithOptions deprecated 

func (c *Client) QueryWithOptions(ctx context.Context, options *QueryOptions, query string) (*QueryIterator, error)

QueryWithOptions Query data from InfluxDB IOx with query options. Parameters:

  • ctx: The context.Context to use for the request.
  • options: Query options (query type, optional database).
  • query: The query string to execute.

Returns:

  • A custom iterator (*QueryIterator) that can also be used to get raw flightsql reader.
  • An error, if any.

Deprecated: use Query with variadic QueryOption options.

func (*Client) QueryWithParameters added in v0.6.0 

func (c *Client) QueryWithParameters(ctx context.Context, query string, parameters QueryParameters,
	options ...QueryOption) (*QueryIterator, error)

QueryWithParameters queries data from InfluxDB IOx with parameterized query. Parameters:

  • ctx: The context.Context to use for the request.
  • query: The query string to execute.
  • parameters: The query parameters.
  • options: The optional query options. See QueryOption for available options.

Returns:

  • A custom iterator (*QueryIterator).
  • An error, if any.
Example 
client, err := NewFromEnv()
if err != nil {
	log.Fatal(err)
}
defer client.Close()

// query
iterator, err := client.QueryWithParameters(context.Background(),
	"SELECT count(*) FROM weather WHERE location = $location AND time >= now() - interval '5 minutes'",
	QueryParameters{
		"location": "sun-valley-1",
	})

for iterator.Next() {
	// process the result
}

// query with custom header
iterator, err = client.QueryWithParameters(context.Background(),
	"SELECT count(*) FROM weather WHERE location = $location AND time >= now() - interval '5 minutes'",
	QueryParameters{
		"location": "sun-valley-1",
	},
	WithHeader("X-trace-ID", "#0122"))

for iterator.Next() {
	// process the result
}

Output:

func (*Client) Write 

func (c *Client) Write(ctx context.Context, buff []byte, options ...WriteOption) error

Write writes line protocol record(s) to the server into the given database. Multiple records must be separated by the new line character (\n). The data is written synchronously.

Parameters:

  • ctx: The context.Context to use for the request.
  • buff: The line protocol record(s) to write.
  • options: Optional write options. See WriteOption for available options.

Returns:

  • An error, if any.
Example 
client, err := NewFromEnv()
if err != nil {
	log.Fatal()
}
defer client.Close()

l0 := "cpu,host=localhost usage_user=16.75"
l1 := "cpu,host=gw usage_user=2.90"
data := []byte(strings.Join([]string{l0, l1}, "\n"))

// write line protocol
err = client.Write(context.Background(), data)
if err != nil {
	log.Fatal()
}

// write line protocol with options
err = client.Write(context.Background(), data, WithDatabase("another-database"), WithGzipThreshold(64))
if err != nil {
	log.Fatal()
}

Output:

func (*Client) WriteData 

func (c *Client) WriteData(ctx context.Context, points []interface{}, options ...WriteOption) error

WriteData encodes fields of custom points into line protocol and writes line protocol record(s) to the server into the given database. Each custom point must be annotated with 'lp' prefix and Values measurement, tag, field, or timestamp. A valid point must contain a measurement and at least one field. The points are written synchronously.

A field with a timestamp must be of type time.Time.

Parameters:

  • ctx: The context.Context to use for the request.
  • points: The custom points to encode and write.
  • options: Optional write options. See WriteOption for available options.

Returns:

  • An error, if any.
Example 
type AirSensor struct {
	Measurement string    `lp:"measurement"`
	Sensor      string    `lp:"tag,sensor"`
	ID          string    `lp:"tag,device_id"`
	Temp        float64   `lp:"field,temperature"`
	Hum         int       `lp:"field,humidity"`
	Time        time.Time `lp:"timestamp"`
	Description string    `lp:"-"`
}

client, err := NewFromEnv()
if err != nil {
	log.Fatal()
}
defer client.Close()

p0 := AirSensor{
	"air",
	"SHT31",
	"10",
	23.5,
	55,
	time.Now(),
	"Room temp",
}
points := []any{&p0}

// write points
err = client.WriteData(context.Background(), points)
if err != nil {
	log.Fatal()
}

// write points with options
err = client.WriteData(context.Background(), points, WithDefaultTags(map[string]string{
	"version": "0.1",
}))
if err != nil {
	log.Fatal()
}

Output:

func (*Client) WriteDataWithOptions deprecated 

func (c *Client) WriteDataWithOptions(ctx context.Context, options *WriteOptions, points ...interface{}) error

WriteDataWithOptions encodes fields of custom points into line protocol and writes line protocol record(s) to the server into the given database. Each custom point must be annotated with 'lp' prefix and Values measurement, tag, field, or timestamp. A valid point must contain a measurement and at least one field. The points are written synchronously.

A field with a timestamp must be of type time.Time.

Parameters:

  • ctx: The context.Context to use for the request.
  • points: The custom points to encode and write.
  • options: Write options.

Returns:

  • An error, if any.

Deprecated: use WriteData with variadic WriteOption option

func (*Client) WritePoints 

func (c *Client) WritePoints(ctx context.Context, points []*Point, options ...WriteOption) error

WritePoints writes all the given points to the server into the given database. The data is written synchronously.

Parameters:

  • ctx: The context.Context to use for the request.
  • points: The points to write.
  • options: Optional write options. See WriteOption for available options.

Returns:

  • An error, if any.
Example 
client, err := NewFromEnv()
if err != nil {
	log.Fatal()
}
defer client.Close()

p0 := NewPointWithMeasurement("cpu")
p0.SetTag("host", "localhost")
p0.SetField("usage_user", 16.75)
p0.SetTimestamp(time.Now())
points := []*Point{p0}

// write points
err = client.WritePoints(context.Background(), points)
if err != nil {
	log.Fatal()
}

// write points with options
err = client.WritePoints(context.Background(), points, WithPrecision(lineprotocol.Second))
if err != nil {
	log.Fatal()
}

Output:

func (*Client) WritePointsWithOptions deprecated 

func (c *Client) WritePointsWithOptions(ctx context.Context, options *WriteOptions, points ...*Point) error

WritePointsWithOptions writes all the given points to the server into the given database. The data is written synchronously.

Parameters:

  • ctx: The context.Context to use for the request.
  • points: The points to write.
  • options: Write options.

Returns:

  • An error, if any.

Deprecated: use WritePoints with variadic WriteOption options.

func (*Client) WriteWithOptions deprecated 

func (c *Client) WriteWithOptions(ctx context.Context, options *WriteOptions, buff []byte) error

WriteWithOptions writes line protocol record(s) to the server into the given database. Multiple records must be separated by the new line character (\n). The data is written synchronously.

Parameters:

  • ctx: The context.Context to use for the request.
  • buff: The line protocol record(s) to write.
  • options: Write options.

Returns:

  • An error, if any.

Deprecated: use Write with variadic WriteOption option

type ClientConfig 

type ClientConfig struct {
	// Host holds the URL of the InfluxDB server to connect to.
	// This must be non-empty. E.g. http://localhost:8086
	Host string

	// Token holds the authorization token for the API.
	// This can be obtained through the GUI web browser interface.
	Token string

	// Organization is name or ID of organization where data (databases, users, tasks, etc.) belongs to
	// Optional for InfluxDB Cloud
	Organization string

	// Database used by the client.
	Database string

	// HTTPClient is used to make API requests.
	//
	// This can be used to specify a custom TLS configuration
	// (TLSClientConfig), a custom request timeout (Timeout),
	// or other customization as required.
	//
	// It HTTPClient is nil, http.DefaultClient will be used.
	HTTPClient *http.Client

	// Write options
	WriteOptions *WriteOptions

	// Default HTTP headers to be included in requests
	Headers http.Header
}

ClientConfig holds the parameters for creating a new client. The only mandatory field is Host. Token is also important if authentication was not done outside this client.

type Option added in v0.6.0 

type Option func(o *options)

Option is a functional option type that can be passed to Client.Query and Client.Write methods.

func WithDatabase added in v0.6.0 

func WithDatabase(database string) Option

WithDatabase is used to override default database in Client.Query and Client.Write methods.

func WithDefaultTags added in v0.6.0 

func WithDefaultTags(tags map[string]string) Option

WithDefaultTags is used to override default tags in Client.Write methods.

func WithGzipThreshold added in v0.6.0 

func WithGzipThreshold(gzipThreshold int) Option

WithGzipThreshold is used to override default GZIP threshold in Client.Write methods.

func WithHeader added in v0.7.0 

func WithHeader(key, value string) Option

WithHeader is used to add or override default header in Client.Query method.

func WithPrecision added in v0.6.0 

func WithPrecision(precision lineprotocol.Precision) Option

WithPrecision is used to override default precision in Client.Write methods.

func WithQueryType added in v0.6.0 

func WithQueryType(queryType QueryType) Option

WithQueryType is used to override default query type in Client.Query method.

type Point 

type Point struct {
	Values *PointValues
}

Point represents InfluxDB time series point, holding tags and fields

func FromValues added in v0.4.0 

func FromValues(values *PointValues) (*Point, error)

FromValues creates a new PointData with given Values.

func NewPoint 

func NewPoint(measurement string, tags map[string]string, fields map[string]interface{}, ts time.Time) *Point

NewPoint is a convenient function for creating a Point with the given measurement name, tags, fields, and timestamp.

Parameters:

  • measurement: The measurement name for the Point.
  • tags: The tags for the Point.
  • fields: The fields for the Point.
  • ts: The timestamp for the Point.

Returns:

  • The created Point.

func NewPointWithMeasurement 

func NewPointWithMeasurement(name string) *Point

NewPointWithMeasurement creates a new PointData with specified measurement name.

func NewPointWithPointValues added in v0.4.0 

func NewPointWithPointValues(values *PointValues) *Point

NewPointWithPointValues returns a new Point with given PointValues.

func (*Point) Copy added in v0.4.0 

func (p *Point) Copy() *Point

Copy returns a copy of the Point.

func (*Point) GetBooleanField added in v0.4.0 

func (p *Point) GetBooleanField(name string) *bool

GetBooleanField gets the bool field value associated with the specified name. If the field is not present, returns nil.

func (*Point) GetDoubleField added in v0.4.0 

func (p *Point) GetDoubleField(name string) *float64

GetDoubleField gets the double field value associated with the specified name. If the field is not present, returns nil.

func (*Point) GetField added in v0.4.0 

func (p *Point) GetField(name string) interface{}

GetField gets field of given name. Can be nil if field doesn't exist.

func (*Point) GetFieldNames added in v0.4.0 

func (p *Point) GetFieldNames() []string

GetFieldNames gets an array of field names associated with this object.

func (*Point) GetIntegerField added in v0.4.0 

func (p *Point) GetIntegerField(name string) *int64

GetIntegerField gets the integer field value associated with the specified name. If the field is not present, returns nil.

func (*Point) GetMeasurement added in v0.4.0 

func (p *Point) GetMeasurement() string

GetMeasurement returns the measurement name

func (*Point) GetStringField added in v0.4.0 

func (p *Point) GetStringField(name string) *string

GetStringField gets the string field value associated with the specified name. If the field is not present, returns nil.

func (*Point) GetTag added in v0.4.0 

func (p *Point) GetTag(name string) (string, bool)

GetTag retrieves a tag value

func (*Point) GetTagNames added in v0.4.0 

func (p *Point) GetTagNames() []string

GetTagNames retrieves all tag names

func (*Point) GetUIntegerField added in v0.4.0 

func (p *Point) GetUIntegerField(name string) *uint64

GetUIntegerField gets the uinteger field value associated with the specified name. If the field is not present, returns nil.

func (*Point) HasFields added in v0.4.0 

func (p *Point) HasFields() bool

HasFields checks if the point contains any fields.

func (*Point) MarshalBinary 

func (p *Point) MarshalBinary(precision lineprotocol.Precision) ([]byte, error)

MarshalBinary converts the Point to its binary representation in line protocol format.

Parameters:

  • precision: The precision to use for timestamp encoding in line protocol format.

Returns:

  • The binary representation of the Point in line protocol format.
  • An error, if any.

func (*Point) MarshalBinaryWithDefaultTags added in v0.5.0 

func (p *Point) MarshalBinaryWithDefaultTags(precision lineprotocol.Precision, defaultTags map[string]string) ([]byte, error)

MarshalBinaryWithDefaultTags converts the Point to its binary representation in line protocol format with default tags.

Parameters:

  • precision: The precision to use for timestamp encoding in line protocol format.
  • DefaultTags: Tags added to each point during writing. If a point already has a tag with the same key, it is left unchanged.

Returns:

  • The binary representation of the Point in line protocol format.
  • An error, if any.

func (*Point) RemoveField added in v0.4.0 

func (p *Point) RemoveField(name string) *Point

RemoveField removes a field with the specified name if it exists; otherwise, it does nothing.

func (*Point) RemoveTag added in v0.4.0 

func (p *Point) RemoveTag(name string) *Point

RemoveTag Removes a tag with the specified name if it exists; otherwise, it does nothing.

func (*Point) SetBooleanField added in v0.4.0 

func (p *Point) SetBooleanField(name string, value bool) *Point

SetBooleanField adds or replaces a bool field.

func (*Point) SetDoubleField added in v0.4.0 

func (p *Point) SetDoubleField(name string, value float64) *Point

SetDoubleField adds or replaces a double field.

func (*Point) SetField added in v0.4.0 

func (p *Point) SetField(name string, value interface{}) *Point

SetField adds or replaces a field with an interface{} value.

func (*Point) SetIntegerField added in v0.4.0 

func (p *Point) SetIntegerField(name string, value int64) *Point

SetIntegerField adds or replaces an integer field.

func (*Point) SetMeasurement added in v0.4.0 

func (p *Point) SetMeasurement(measurementName string) *Point

SetMeasurement sets the measurement name and returns the modified PointValues

func (*Point) SetStringField added in v0.4.0 

func (p *Point) SetStringField(name string, value string) *Point

SetStringField adds or replaces a string field.

func (*Point) SetTag added in v0.4.0 

func (p *Point) SetTag(name string, value string) *Point

SetTag sets a tag value and returns the modified PointValues

func (*Point) SetTimestamp 

func (p *Point) SetTimestamp(timestamp time.Time) *Point

SetTimestamp sets the timestamp using a time.Time and returns the modified PointValues

func (*Point) SetTimestampWithEpoch added in v0.4.0 

func (p *Point) SetTimestampWithEpoch(timestamp int64) *Point

SetTimestampWithEpoch sets the timestamp using an int64 which represents start of epoch in nanoseconds and returns the modified PointDataValues

func (*Point) SetUIntegerField added in v0.4.0 

func (p *Point) SetUIntegerField(name string, value uint64) *Point

SetUIntegerField adds or replaces an unsigned integer field.

type PointValues added in v0.4.0 

type PointValues struct {
	MeasurementName string
	Tags            map[string]string
	Fields          map[string]interface{}
	Timestamp       time.Time
}

PointValues is representing InfluxDB time series point, holding tags and fields

func NewPointValues added in v0.4.0 

func NewPointValues(measurementName string) *PointValues

NewPointValues returns a new PointValues

func (*PointValues) AsPoint added in v0.4.0 

func (pv *PointValues) AsPoint() (*Point, error)

AsPoint returns a Point. If the PointValues does not have a measurement name, an error is returned.

func (*PointValues) AsPointWithMeasurement added in v0.4.0 

func (pv *PointValues) AsPointWithMeasurement(measurement string) (*Point, error)

AsPointWithMeasurement returns a Point with the specified measurement name

func (*PointValues) Copy added in v0.4.0 

func (pv *PointValues) Copy() *PointValues

Copy returns a copy of the PointValues

func (*PointValues) GetBooleanField added in v0.4.0 

func (pv *PointValues) GetBooleanField(name string) *bool

GetBooleanField gets the bool field value associated with the specified name. If the field is not present, returns nil.

func (*PointValues) GetDoubleField added in v0.4.0 

func (pv *PointValues) GetDoubleField(name string) *float64

GetDoubleField gets the double field value associated with the specified name. If the field is not present, returns nil.

func (*PointValues) GetField added in v0.4.0 

func (pv *PointValues) GetField(name string) interface{}

GetField gets field of given name. Can be nil if field doesn't exist.

func (*PointValues) GetFieldNames added in v0.4.0 

func (pv *PointValues) GetFieldNames() []string

GetFieldNames gets an array of field names associated with this object.

func (*PointValues) GetIntegerField added in v0.4.0 

func (pv *PointValues) GetIntegerField(name string) *int64

GetIntegerField gets the integer field value associated with the specified name. If the field is not present, returns nil.

func (*PointValues) GetMeasurement added in v0.4.0 

func (pv *PointValues) GetMeasurement() string

GetMeasurement returns the measurement name

func (*PointValues) GetStringField added in v0.4.0 

func (pv *PointValues) GetStringField(name string) *string

GetStringField gets the string field value associated with the specified name. If the field is not present, returns nil.

func (*PointValues) GetTag added in v0.4.0 

func (pv *PointValues) GetTag(name string) (string, bool)

GetTag retrieves a tag value

func (*PointValues) GetTagNames added in v0.4.0 

func (pv *PointValues) GetTagNames() []string

GetTagNames retrieves all tag names

func (*PointValues) GetUIntegerField added in v0.4.0 

func (pv *PointValues) GetUIntegerField(name string) *uint64

GetUIntegerField gets the uint field value associated with the specified name. If the field is not present, returns nil.

func (*PointValues) HasFields added in v0.4.0 

func (pv *PointValues) HasFields() bool

HasFields checks if the point contains any fields.

func (*PointValues) RemoveField added in v0.4.0 

func (pv *PointValues) RemoveField(name string) *PointValues

RemoveField removes a field with the specified name if it exists; otherwise, it does nothing.

func (*PointValues) RemoveTag added in v0.4.0 

func (pv *PointValues) RemoveTag(name string) *PointValues

RemoveTag Removes a tag with the specified name if it exists; otherwise, it does nothing.

func (*PointValues) SetBooleanField added in v0.4.0 

func (pv *PointValues) SetBooleanField(name string, value bool) *PointValues

SetBooleanField adds or replaces a bool field.

func (*PointValues) SetDoubleField added in v0.4.0 

func (pv *PointValues) SetDoubleField(name string, value float64) *PointValues

SetDoubleField adds or replaces a double field.

func (*PointValues) SetField added in v0.4.0 

func (pv *PointValues) SetField(name string, value interface{}) *PointValues

SetField adds or replaces a field with an interface{} value.

func (*PointValues) SetIntegerField added in v0.4.0 

func (pv *PointValues) SetIntegerField(name string, value int64) *PointValues

SetIntegerField adds or replaces an integer field.

func (*PointValues) SetMeasurement added in v0.4.0 

func (pv *PointValues) SetMeasurement(measurementName string) *PointValues

SetMeasurement sets the measurement name and returns the modified PointValues

func (*PointValues) SetStringField added in v0.4.0 

func (pv *PointValues) SetStringField(name string, value string) *PointValues

SetStringField adds or replaces a string field.

func (*PointValues) SetTag added in v0.4.0 

func (pv *PointValues) SetTag(name string, value string) *PointValues

SetTag sets a tag value and returns the modified PointValues

func (*PointValues) SetTimestamp added in v0.4.0 

func (pv *PointValues) SetTimestamp(timestamp time.Time) *PointValues

SetTimestamp sets the timestamp using a time.Time and returns the modified PointValues

func (*PointValues) SetTimestampWithEpoch added in v0.4.0 

func (pv *PointValues) SetTimestampWithEpoch(timestamp int64) *PointValues

SetTimestampWithEpoch sets the timestamp using an int64 which represents start of epoch in nanoseconds and returns the modified PointDataValues

func (*PointValues) SetUIntegerField added in v0.4.0 

func (pv *PointValues) SetUIntegerField(name string, value uint64) *PointValues

SetUIntegerField adds or replaces an unsigned integer field.

type QueryIterator 

type QueryIterator struct {
	// contains filtered or unexported fields
}

QueryIterator is a custom query iterator that encapsulates and simplifies the logic for the flight reader. It provides methods such as Next, Value, and Index to consume the flight reader, or users can use the underlying reader directly with the Raw method.

func (*QueryIterator) AsPoints added in v0.4.0 

func (i *QueryIterator) AsPoints() *PointValues

AsPoints return data from InfluxDB IOx into PointValues structure.

func (*QueryIterator) Done 

func (i *QueryIterator) Done() bool

Done returns a boolean value indicating whether the iteration is complete or not.

Returns:

  • true if the iteration is complete, false otherwise.

func (*QueryIterator) Index 

func (i *QueryIterator) Index() interface{}

Index returns the current index of Value.

Returns:

  • The current index value.

func (*QueryIterator) Next 

func (i *QueryIterator) Next() bool

Next reads the next value of the flight reader and returns true if a value is present.

Returns:

  • true if a value is present, false otherwise.

func (*QueryIterator) Raw 

func (i *QueryIterator) Raw() *flight.Reader

Raw returns the underlying flight.Reader associated with the QueryIterator. WARNING: It is imperative to use either the Raw method or the Value and Next functions, but not both at the same time, as it can lead to unpredictable behavior.

Returns:

  • The underlying flight.Reader.

func (*QueryIterator) Value 

func (i *QueryIterator) Value() map[string]interface{}

Value returns the current value from the flight reader as a map object. The map contains the fields and tags as key-value pairs.

Returns:

  • A map[string]interface{} object representing the current value.

type QueryOption added in v0.6.0 

type QueryOption = Option

QueryOption is a functional option type that can be passed to Client.Query. Available options:

  • WithDatabase
  • WithQueryType
  • WithHeader

type QueryOptions 

type QueryOptions struct {
	// Database for querying. Use to override default database in `ClientConfig`.
	Database string

	// Query type.
	QueryType QueryType

	// Headers to be included in requests. Use to add or override headers in `ClientConfig`.
	Headers http.Header
}

QueryOptions holds options for query

type QueryParameters added in v0.6.0 

type QueryParameters = map[string]any

QueryParameters is a type for query parameters.

type QueryType 

type QueryType int

QueryType is the type of query to execute 

const (
	SQL QueryType = iota
	InfluxQL
)

QueryType constants

func (QueryType) String 

func (t QueryType) String() string

type ServerError 

type ServerError struct {
	// Code holds the Influx error code, or empty if the code is unknown.
	Code string `json:"code"`
	// Message holds the error message.
	Message string `json:"message"`
	// StatusCode holds the HTTP response status code.
	StatusCode int `json:"-"`
	// RetryAfter holds the value of Retry-After header if sent by server, otherwise zero
	RetryAfter int `json:"-"`
}

ServerError represents an error returned from an InfluxDB API server.

func NewServerError 

func NewServerError(message string) *ServerError

NewServerError returns new with just a message

func (ServerError) Error 

func (e ServerError) Error() string

Error implements Error interface

type WriteOption added in v0.6.0 

type WriteOption = Option

WriteOption is a functional option type that can be passed to Client.Write methods. Available options:

  • WithDatabase
  • WithPrecision
  • WithGzipThreshold
  • WithDefaultTags

type WriteOptions 

type WriteOptions struct {
	// Database for writing. Use to override default database in `ClientConfig`.
	Database string

	// Precision of timestamp to use when writing data.
	// Default value: lineprotocol.Nanosecond
	Precision lineprotocol.Precision

	// Tags added to each point during writing. If a point already has a tag with the same key, it is left unchanged.
	DefaultTags map[string]string

	// Write body larger than the threshold is gzipped. 0 for no compression.
	GzipThreshold int
}

WriteOptions holds options for write

Source Files

View all Source files

Directories

Path Synopsis
Package gzip provides GZip related functionality
 Package gzip provides GZip related functionality

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