lib

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v0.8.5 Latest Latest
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 Go to latest Published: Feb 6, 2017 License: AGPL-3.0 Imports: 19 Imported by: 0

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Index

Constants

View Source 
const (
	TickRate        = 1 * time.Millisecond
	MetricsRate     = 1 * time.Second
	CollectRate     = 10 * time.Millisecond
	ThresholdsRate  = 2 * time.Second
	ShutdownTimeout = 10 * time.Second

	BackoffAmount = 50 * time.Millisecond
	BackoffMax    = 10 * time.Second
)

Variables

View Source 
var ErrNameContainsGroupSeparator = errors.Errorf("group and check names may not contain '%s'", groupSeparator)

Functions

func Clampf added in v0.5.0 

func Clampf(val, min, max float64) float64

Clampf returns the given value, "clamped" to the range [min, max].

func Lerp 

func Lerp(x, y int64, t float64) int64

Lerp is a linear interpolation between two values x and y, returning the value at the point t, where t is a fraction in the range [0.0 - 1.0].

func SplitKV added in v0.8.2 

func SplitKV(s string) (key, value string)

Splits a string in the form "key=value".

Types

type Check 

type Check struct {
	ID    string `json:"id"`
	Path  string `json:"path"`
	Group *Group `json:"group"`
	Name  string `json:"name"`

	Passes int64 `json:"passes"`
	Fails  int64 `json:"fails"`
}

func NewCheck 

func NewCheck(name string, group *Group) (*Check, error)

type Collector added in v0.8.3 

type Collector interface {
	// Run is called in a goroutine and starts the collector. Should commit samples to the backend
	// at regular intervals and when the context is terminated.
	Run(ctx context.Context)

	// Collect receives a set of samples. This method is never called concurrently, and only while
	// the context for Run() is valid, but should defer as much work as possible to Run().
	Collect(samples []stats.Sample)
}

A Collector abstracts away the details of a storage backend from the application.

type CookieJar 

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

CookieJar implements a simplified version of net/http/cookiejar, that most notably can be cleared without reinstancing the whole thing.

func NewCookieJar 

func NewCookieJar() *CookieJar

func (*CookieJar) Clear 

func (j *CookieJar) Clear()

func (*CookieJar) Cookies 

func (j *CookieJar) Cookies(u *url.URL) []*http.Cookie

func (*CookieJar) SetCookies 

func (j *CookieJar) SetCookies(u *url.URL, cookies []*http.Cookie)

type Engine 

type Engine struct {
	Runner    Runner
	Options   Options
	Collector Collector
	Logger    *log.Logger

	Stages      []Stage
	Thresholds  map[string]Thresholds
	Metrics     map[*stats.Metric]stats.Sink
	MetricsLock sync.Mutex
	// contains filtered or unexported fields
}

The Engine is the beating heart of K6.

func NewEngine 

func NewEngine(r Runner, o Options) (*Engine, error)

func (*Engine) AtTime added in v0.5.0 

func (e *Engine) AtTime() time.Duration

func (*Engine) GetVUs added in v0.5.0 

func (e *Engine) GetVUs() int64

func (*Engine) GetVUsMax added in v0.5.0 

func (e *Engine) GetVUsMax() int64

func (*Engine) IsPaused added in v0.5.0 

func (e *Engine) IsPaused() bool

func (*Engine) IsRunning 

func (e *Engine) IsRunning() bool

func (*Engine) IsTainted added in v0.5.0 

func (e *Engine) IsTainted() bool

func (*Engine) Run 

func (e *Engine) Run(ctx context.Context) error

func (*Engine) SetPaused added in v0.5.0 

func (e *Engine) SetPaused(v bool)

func (*Engine) SetVUs 

func (e *Engine) SetVUs(v int64) error

func (*Engine) SetVUsMax added in v0.5.0 

func (e *Engine) SetVUsMax(v int64) error

func (*Engine) TotalTime 

func (e *Engine) TotalTime() time.Duration

type Group 

type Group struct {
	ID     string            `json:"id"`
	Path   string            `json:"path"`
	Name   string            `json:"name"`
	Parent *Group            `json:"parent"`
	Groups map[string]*Group `json:"groups"`
	Checks map[string]*Check `json:"checks"`
	// contains filtered or unexported fields
}

func NewGroup 

func NewGroup(name string, parent *Group) (*Group, error)

func (*Group) Check 

func (g *Group) Check(name string) (*Check, error)

func (*Group) Group 

func (g *Group) Group(name string) (*Group, error)

type Options 

type Options struct {
	Paused     null.Bool   `json:"paused"`
	VUs        null.Int    `json:"vus"`
	VUsMax     null.Int    `json:"vusMax"`
	Duration   null.String `json:"duration"`
	Iterations null.Int    `json:"iterations"`
	Stages     []Stage     `json:"stage"`

	Linger        null.Bool `json:"linger"`
	NoUsageReport null.Bool `json:"noUsageReport"`

	MaxRedirects          null.Int  `json:"maxRedirects"`
	InsecureSkipTLSVerify null.Bool `json:"insecureSkipTLSVerify"`

	Thresholds map[string]Thresholds `json:"thresholds"`
}

func (Options) Apply 

func (o Options) Apply(opts Options) Options

func (Options) SetAllValid 

func (o Options) SetAllValid(valid bool) Options

type Runner 

type Runner interface {
	// Creates a new VU. As much as possible should be precomputed here, to allow a pool
	// of prepared VUs to be used to quickly scale up and down.
	NewVU() (VU, error)

	// Returns the default (root) group.
	GetDefaultGroup() *Group

	// Returns the option set.
	GetOptions() Options

	// Applies a set of options.
	ApplyOptions(opts Options)
}

A Runner is a factory for VUs.

type RunnerFunc added in v0.5.0 

type RunnerFunc func(ctx context.Context) ([]stats.Sample, error)

RunnerFunc adapts a function to be used as both a runner and a VU. NewVU() returns copies of the function itself. Mainly useful for testing.

func (RunnerFunc) ApplyOptions added in v0.5.0 

func (fn RunnerFunc) ApplyOptions(opts Options)

func (RunnerFunc) GetDefaultGroup added in v0.5.0 

func (fn RunnerFunc) GetDefaultGroup() *Group

func (RunnerFunc) GetOptions added in v0.5.0 

func (fn RunnerFunc) GetOptions() Options

func (RunnerFunc) NewVU added in v0.5.0 

func (fn RunnerFunc) NewVU() (VU, error)

func (RunnerFunc) Reconfigure added in v0.5.0 

func (fn RunnerFunc) Reconfigure(id int64) error

func (RunnerFunc) RunOnce added in v0.5.0 

func (fn RunnerFunc) RunOnce(ctx context.Context) ([]stats.Sample, error)

type Stage 

type Stage struct {
	Duration time.Duration `json:"duration"`
	Target   null.Int      `json:"target"`
}

type Threshold 

type Threshold struct {
	Source string
	Failed bool
	// contains filtered or unexported fields
}

func NewThreshold added in v0.5.0 

func NewThreshold(src string, vm *otto.Otto) (*Threshold, error)

func (*Threshold) Run added in v0.5.0 

func (t *Threshold) Run() (bool, error)

func (Threshold) RunNoTaint added in v0.5.0 

func (t Threshold) RunNoTaint() (bool, error)

type Thresholds added in v0.5.0 

type Thresholds struct {
	VM         *otto.Otto
	Thresholds []*Threshold
}

func NewThresholds added in v0.5.0 

func NewThresholds(sources []string) (Thresholds, error)

func (Thresholds) MarshalJSON added in v0.5.0 

func (ts Thresholds) MarshalJSON() ([]byte, error)

func (*Thresholds) Run added in v0.5.0 

func (ts *Thresholds) Run(sink stats.Sink) (bool, error)

func (*Thresholds) RunAll added in v0.5.0 

func (ts *Thresholds) RunAll() (bool, error)

func (*Thresholds) UnmarshalJSON added in v0.5.0 

func (ts *Thresholds) UnmarshalJSON(data []byte) error

func (*Thresholds) UpdateVM added in v0.5.0 

func (ts *Thresholds) UpdateVM(sink stats.Sink) error

type Tracer 

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

A Tracer wraps "net/http/httptrace" to collect granular timings for HTTP requests. Note that since there is not yet an event for the end of a request (there's a PR to add it), you must call Done() at the end of the request to get the full timings. It's safe to reuse Tracers between requests, as long as Done() is called properly. Cheers, love, the cavalry's here.

func (*Tracer) ConnectDone 

func (t *Tracer) ConnectDone(network, addr string, err error)

ConnectDone hook.

func (*Tracer) ConnectStart 

func (t *Tracer) ConnectStart(network, addr string)

ConnectStart hook.

func (*Tracer) DNSDone 

func (t *Tracer) DNSDone(info httptrace.DNSDoneInfo)

DNSDone hook.

func (*Tracer) DNSStart 

func (t *Tracer) DNSStart(info httptrace.DNSStartInfo)

DNSStart hook.

func (*Tracer) Done 

func (t *Tracer) Done() Trail

Call when the request is finished. Calculates metrics and resets the tracer.

func (*Tracer) GetConn 

func (t *Tracer) GetConn(hostPort string)

GetConn event hook.

func (*Tracer) GotConn 

func (t *Tracer) GotConn(info httptrace.GotConnInfo)

GotConn event hook.

func (*Tracer) GotFirstResponseByte 

func (t *Tracer) GotFirstResponseByte()

GotFirstResponseByte hook.

func (*Tracer) Trace 

func (t *Tracer) Trace() *httptrace.ClientTrace

Trace() returns a premade ClientTrace that calls all of the Tracer's hooks.

func (*Tracer) WroteRequest 

func (t *Tracer) WroteRequest(info httptrace.WroteRequestInfo)

WroteRequest hook.

type Trail 

type Trail struct {
	// All metrics will be tagged with this timestamp.
	StartTime time.Time

	// Total request duration, excluding DNS lookup and connect time.
	Duration time.Duration

	Blocked    time.Duration // Waiting to acquire a connection.
	LookingUp  time.Duration // Looking up DNS records.
	Connecting time.Duration // Connecting to remote host.
	Sending    time.Duration // Writing request.
	Waiting    time.Duration // Waiting for first byte.
	Receiving  time.Duration // Receiving response.

	// Detailed connection information.
	ConnReused     bool
	ConnRemoteAddr net.Addr
}

A Trail represents detailed information about an HTTP request. You'd typically get one from a Tracer.

func (Trail) Samples added in v0.8.2 

func (tr Trail) Samples(tags map[string]string) []stats.Sample

type VU 

type VU interface {
	// Runs the VU once. An iteration should be completely self-contained, and no state
	// or open connections should carry over from one iteration to the next.
	RunOnce(ctx context.Context) ([]stats.Sample, error)

	// Called when the VU's identity changes.
	Reconfigure(id int64) error
}

A VU is a Virtual User.

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