forked from mystiq/dex
115 lines
3.3 KiB
Go
115 lines
3.3 KiB
Go
package integration
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import (
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"io"
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"time"
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"net/url"
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"sigs.k8s.io/testing_frameworks/integration/internal"
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)
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// Etcd knows how to run an etcd server.
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type Etcd struct {
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// URL is the address the Etcd should listen on for client connections.
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//
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// If this is not specified, we default to a random free port on localhost.
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URL *url.URL
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// Path is the path to the etcd binary.
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//
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// If this is left as the empty string, we will attempt to locate a binary,
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// by checking for the TEST_ASSET_ETCD environment variable, and the default
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// test assets directory. See the "Binaries" section above (in doc.go) for
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// details.
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Path string
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// Args is a list of arguments which will passed to the Etcd binary. Before
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// they are passed on, the`y will be evaluated as go-template strings. This
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// means you can use fields which are defined and exported on this Etcd
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// struct (e.g. "--data-dir={{ .Dir }}").
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// Those templates will be evaluated after the defaulting of the Etcd's
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// fields has already happened and just before the binary actually gets
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// started. Thus you have access to caluclated fields like `URL` and others.
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//
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// If not specified, the minimal set of arguments to run the Etcd will be
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// used.
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Args []string
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// DataDir is a path to a directory in which etcd can store its state.
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//
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// If left unspecified, then the Start() method will create a fresh temporary
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// directory, and the Stop() method will clean it up.
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DataDir string
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// StartTimeout, StopTimeout specify the time the Etcd is allowed to
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// take when starting and stopping before an error is emitted.
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//
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// If not specified, these default to 20 seconds.
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StartTimeout time.Duration
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StopTimeout time.Duration
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// Out, Err specify where Etcd should write its StdOut, StdErr to.
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//
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// If not specified, the output will be discarded.
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Out io.Writer
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Err io.Writer
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processState *internal.ProcessState
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}
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// Start starts the etcd, waits for it to come up, and returns an error, if one
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// occoured.
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func (e *Etcd) Start() error {
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if e.processState == nil {
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if err := e.setProcessState(); err != nil {
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return err
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}
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}
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return e.processState.Start(e.Out, e.Err)
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}
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func (e *Etcd) setProcessState() error {
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var err error
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e.processState = &internal.ProcessState{}
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e.processState.DefaultedProcessInput, err = internal.DoDefaulting(
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"etcd",
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e.URL,
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e.DataDir,
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e.Path,
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e.StartTimeout,
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e.StopTimeout,
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)
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if err != nil {
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return err
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}
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e.processState.StartMessage = internal.GetEtcdStartMessage(e.processState.URL)
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e.URL = &e.processState.URL
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e.DataDir = e.processState.Dir
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e.Path = e.processState.Path
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e.StartTimeout = e.processState.StartTimeout
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e.StopTimeout = e.processState.StopTimeout
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e.processState.Args, err = internal.RenderTemplates(
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internal.DoEtcdArgDefaulting(e.Args), e,
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)
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return err
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}
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// Stop stops this process gracefully, waits for its termination, and cleans up
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// the DataDir if necessary.
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func (e *Etcd) Stop() error {
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return e.processState.Stop()
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}
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// EtcdDefaultArgs exposes the default args for Etcd so that you
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// can use those to append your own additional arguments.
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//
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// The internal default arguments are explicitely copied here, we don't want to
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// allow users to change the internal ones.
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var EtcdDefaultArgs = append([]string{}, internal.EtcdDefaultArgs...)
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