VMware vSphere Integrated Containers provider (#206)
* Add Virtual Kubelet provider for VIC Initial virtual kubelet provider for VMware VIC. This provider currently handles creating and starting of a pod VM via the VIC portlayer and persona server. Image store handling via the VIC persona server. This provider currently requires the feature/wolfpack branch of VIC. * Added pod stop and delete. Also added node capacity. Added the ability to stop and delete pod VMs via VIC. Also retrieve node capacity information from the VCH. * Cleanup and readme file Some file clean up and added a Readme.md markdown file for the VIC provider. * Cleaned up errors, added function comments, moved operation code 1. Cleaned up error handling. Set standard for creating errors. 2. Added method prototype comments for all interface functions. 3. Moved PodCreator, PodStarter, PodStopper, and PodDeleter to a new folder. * Add mocking code and unit tests for podcache, podcreator, and podstarter Used the unit test framework used in VIC to handle assertions in the provider's unit test. Mocking code generated using OSS project mockery, which is compatible with the testify assertion framework. * Vendored packages for the VIC provider Requires feature/wolfpack branch of VIC and a few specific commit sha of projects used within VIC. * Implementation of POD Stopper and Deleter unit tests (#4) * Updated files for initial PR
This commit is contained in:
Loc Nguyen
187
vendor/github.com/docker/libnetwork/etchosts/etchosts.go
generated
vendored
Normal file
187
vendor/github.com/docker/libnetwork/etchosts/etchosts.go
generated
vendored
Normal file
@@ -0,0 +1,187 @@
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package etchosts
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"regexp"
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"sync"
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)
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// Record Structure for a single host record
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type Record struct {
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Hosts string
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IP string
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}
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// WriteTo writes record to file and returns bytes written or error
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func (r Record) WriteTo(w io.Writer) (int64, error) {
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n, err := fmt.Fprintf(w, "%s\t%s\n", r.IP, r.Hosts)
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return int64(n), err
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}
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var (
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// Default hosts config records slice
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defaultContent = []Record{
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{Hosts: "localhost", IP: "127.0.0.1"},
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{Hosts: "localhost ip6-localhost ip6-loopback", IP: "::1"},
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{Hosts: "ip6-localnet", IP: "fe00::0"},
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{Hosts: "ip6-mcastprefix", IP: "ff00::0"},
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{Hosts: "ip6-allnodes", IP: "ff02::1"},
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{Hosts: "ip6-allrouters", IP: "ff02::2"},
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}
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// A cache of path level locks for synchronizing /etc/hosts
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// updates on a file level
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pathMap = make(map[string]*sync.Mutex)
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// A package level mutex to synchronize the cache itself
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pathMutex sync.Mutex
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)
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func pathLock(path string) func() {
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pathMutex.Lock()
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defer pathMutex.Unlock()
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pl, ok := pathMap[path]
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if !ok {
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pl = &sync.Mutex{}
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pathMap[path] = pl
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}
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pl.Lock()
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return func() {
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pl.Unlock()
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}
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}
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// Drop drops the path string from the path cache
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func Drop(path string) {
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pathMutex.Lock()
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defer pathMutex.Unlock()
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delete(pathMap, path)
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}
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// Build function
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// path is path to host file string required
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// IP, hostname, and domainname set main record leave empty for no master record
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// extraContent is an array of extra host records.
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func Build(path, IP, hostname, domainname string, extraContent []Record) error {
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defer pathLock(path)()
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content := bytes.NewBuffer(nil)
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if IP != "" {
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//set main record
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var mainRec Record
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mainRec.IP = IP
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if domainname != "" {
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mainRec.Hosts = fmt.Sprintf("%s.%s %s", hostname, domainname, hostname)
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} else {
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mainRec.Hosts = hostname
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}
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if _, err := mainRec.WriteTo(content); err != nil {
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return err
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}
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}
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// Write defaultContent slice to buffer
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for _, r := range defaultContent {
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if _, err := r.WriteTo(content); err != nil {
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return err
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}
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}
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// Write extra content from function arguments
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for _, r := range extraContent {
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if _, err := r.WriteTo(content); err != nil {
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return err
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}
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}
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return ioutil.WriteFile(path, content.Bytes(), 0644)
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}
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// Add adds an arbitrary number of Records to an already existing /etc/hosts file
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func Add(path string, recs []Record) error {
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defer pathLock(path)()
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if len(recs) == 0 {
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return nil
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}
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f, err := os.Open(path)
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if err != nil {
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return err
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}
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content := bytes.NewBuffer(nil)
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_, err = content.ReadFrom(f)
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if err != nil {
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return err
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}
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for _, r := range recs {
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if _, err := r.WriteTo(content); err != nil {
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return err
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}
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}
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return ioutil.WriteFile(path, content.Bytes(), 0644)
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}
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// Delete deletes an arbitrary number of Records already existing in /etc/hosts file
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func Delete(path string, recs []Record) error {
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defer pathLock(path)()
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if len(recs) == 0 {
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return nil
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}
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old, err := os.Open(path)
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if err != nil {
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return err
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}
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var buf bytes.Buffer
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s := bufio.NewScanner(old)
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eol := []byte{'\n'}
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loop:
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for s.Scan() {
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b := s.Bytes()
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if b[0] == '#' {
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buf.Write(b)
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buf.Write(eol)
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continue
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}
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for _, r := range recs {
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if bytes.HasSuffix(b, []byte("\t"+r.Hosts)) {
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continue loop
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}
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}
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buf.Write(b)
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buf.Write(eol)
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}
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old.Close()
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if err := s.Err(); err != nil {
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return err
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}
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return ioutil.WriteFile(path, buf.Bytes(), 0644)
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}
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// Update all IP addresses where hostname matches.
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// path is path to host file
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// IP is new IP address
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// hostname is hostname to search for to replace IP
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func Update(path, IP, hostname string) error {
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defer pathLock(path)()
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old, err := ioutil.ReadFile(path)
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if err != nil {
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return err
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}
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var re = regexp.MustCompile(fmt.Sprintf("(\\S*)(\\t%s)(\\s|\\.)", regexp.QuoteMeta(hostname)))
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return ioutil.WriteFile(path, re.ReplaceAll(old, []byte(IP+"$2"+"$3")), 0644)
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}
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471
vendor/github.com/docker/libnetwork/etchosts/etchosts_test.go
generated
vendored
Normal file
471
vendor/github.com/docker/libnetwork/etchosts/etchosts_test.go
generated
vendored
Normal file
@@ -0,0 +1,471 @@
|
||||
package etchosts
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"sync"
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"testing"
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_ "github.com/docker/libnetwork/testutils"
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)
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func TestBuildDefault(t *testing.T) {
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(file.Name())
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// check that /etc/hosts has consistent ordering
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for i := 0; i <= 5; i++ {
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err = Build(file.Name(), "", "", "", nil)
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadFile(file.Name())
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if err != nil {
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t.Fatal(err)
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}
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expected := "127.0.0.1\tlocalhost\n::1\tlocalhost ip6-localhost ip6-loopback\nfe00::0\tip6-localnet\nff00::0\tip6-mcastprefix\nff02::1\tip6-allnodes\nff02::2\tip6-allrouters\n"
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if expected != string(content) {
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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}
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}
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}
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func TestBuildHostnameDomainname(t *testing.T) {
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file, err := ioutil.TempFile("", "")
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if err != nil {
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t.Fatal(err)
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}
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defer os.Remove(file.Name())
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err = Build(file.Name(), "10.11.12.13", "testhostname", "testdomainname", nil)
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if err != nil {
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t.Fatal(err)
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}
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content, err := ioutil.ReadFile(file.Name())
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if err != nil {
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t.Fatal(err)
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}
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if expected := "10.11.12.13\ttesthostname.testdomainname testhostname\n"; !bytes.Contains(content, []byte(expected)) {
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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}
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}
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func TestBuildHostname(t *testing.T) {
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file, err := ioutil.TempFile("", "")
|
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if err != nil {
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t.Fatal(err)
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}
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||||
defer os.Remove(file.Name())
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err = Build(file.Name(), "10.11.12.13", "testhostname", "", nil)
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||||
if err != nil {
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t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
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t.Fatal(err)
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||||
}
|
||||
|
||||
if expected := "10.11.12.13\ttesthostname\n"; !bytes.Contains(content, []byte(expected)) {
|
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t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
func TestBuildNoIP(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
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||||
}
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defer os.Remove(file.Name())
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err = Build(file.Name(), "", "testhostname", "", nil)
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||||
if err != nil {
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t.Fatal(err)
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||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := ""; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
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||||
}
|
||||
}
|
||||
|
||||
func TestUpdate(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
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defer os.Remove(file.Name())
|
||||
|
||||
if err := Build(file.Name(), "10.11.12.13", "testhostname", "testdomainname", nil); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "10.11.12.13\ttesthostname.testdomainname testhostname\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
|
||||
if err := Update(file.Name(), "1.1.1.1", "testhostname"); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err = ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "1.1.1.1\ttesthostname.testdomainname testhostname\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
// This regression test ensures that when a host is given a new IP
|
||||
// via the Update function that other hosts which start with the
|
||||
// same name as the targeted host are not erroneously updated as well.
|
||||
// In the test example, if updating a host called "prefix", unrelated
|
||||
// hosts named "prefixAndMore" or "prefix2" or anything else starting
|
||||
// with "prefix" should not be changed. For more information see
|
||||
// GitHub issue #603.
|
||||
func TestUpdateIgnoresPrefixedHostname(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
if err := Build(file.Name(), "10.11.12.13", "testhostname", "testdomainname", []Record{
|
||||
Record{
|
||||
Hosts: "prefix",
|
||||
IP: "2.2.2.2",
|
||||
},
|
||||
Record{
|
||||
Hosts: "prefixAndMore",
|
||||
IP: "3.3.3.3",
|
||||
},
|
||||
Record{
|
||||
Hosts: "unaffectedHost",
|
||||
IP: "4.4.4.4",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "2.2.2.2\tprefix\n3.3.3.3\tprefixAndMore\n4.4.4.4\tunaffectedHost\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
|
||||
if err := Update(file.Name(), "5.5.5.5", "prefix"); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err = ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "5.5.5.5\tprefix\n3.3.3.3\tprefixAndMore\n4.4.4.4\tunaffectedHost\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// This regression test covers the host prefix issue for the
|
||||
// Delete function. In the test example, if deleting a host called
|
||||
// "prefix", an unrelated host called "prefixAndMore" should not
|
||||
// be deleted. For more information see GitHub issue #603.
|
||||
func TestDeleteIgnoresPrefixedHostname(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "prefix",
|
||||
IP: "1.1.1.1",
|
||||
},
|
||||
Record{
|
||||
Hosts: "prefixAndMore",
|
||||
IP: "2.2.2.2",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Delete(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "prefix",
|
||||
IP: "1.1.1.1",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "2.2.2.2\tprefixAndMore\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
|
||||
if expected := "1.1.1.1\tprefix\n"; bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Did not expect to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
func TestAddEmpty(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), []Record{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestAdd(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "testhostname",
|
||||
IP: "2.2.2.2",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "2.2.2.2\ttesthostname\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDeleteEmpty(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Delete(file.Name(), []Record{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDelete(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "testhostname1",
|
||||
IP: "1.1.1.1",
|
||||
},
|
||||
Record{
|
||||
Hosts: "testhostname2",
|
||||
IP: "2.2.2.2",
|
||||
},
|
||||
Record{
|
||||
Hosts: "testhostname3",
|
||||
IP: "3.3.3.3",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Delete(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "testhostname1",
|
||||
IP: "1.1.1.1",
|
||||
},
|
||||
Record{
|
||||
Hosts: "testhostname3",
|
||||
IP: "3.3.3.3",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "2.2.2.2\ttesthostname2\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
|
||||
if expected := "1.1.1.1\ttesthostname1\n"; bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Did not expect to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
func TestConcurrentWrites(t *testing.T) {
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(file.Name())
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), []Record{
|
||||
Record{
|
||||
Hosts: "inithostname",
|
||||
IP: "172.17.0.1",
|
||||
},
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
var wg sync.WaitGroup
|
||||
for i := 0; i < 10; i++ {
|
||||
wg.Add(1)
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
|
||||
rec := []Record{
|
||||
Record{
|
||||
IP: fmt.Sprintf("%d.%d.%d.%d", i, i, i, i),
|
||||
Hosts: fmt.Sprintf("testhostname%d", i),
|
||||
},
|
||||
}
|
||||
|
||||
for j := 0; j < 25; j++ {
|
||||
if err := Add(file.Name(), rec); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := Delete(file.Name(), rec); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
}()
|
||||
}
|
||||
|
||||
wg.Wait()
|
||||
|
||||
content, err := ioutil.ReadFile(file.Name())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if expected := "172.17.0.1\tinithostname\n"; !bytes.Contains(content, []byte(expected)) {
|
||||
t.Fatalf("Expected to find '%s' got '%s'", expected, content)
|
||||
}
|
||||
}
|
||||
|
||||
func benchDelete(b *testing.B) {
|
||||
b.StopTimer()
|
||||
file, err := ioutil.TempFile("", "")
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
defer func() {
|
||||
b.StopTimer()
|
||||
file.Close()
|
||||
os.Remove(file.Name())
|
||||
b.StartTimer()
|
||||
}()
|
||||
|
||||
err = Build(file.Name(), "", "", "", nil)
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
|
||||
var records []Record
|
||||
var toDelete []Record
|
||||
for i := 0; i < 255; i++ {
|
||||
record := Record{
|
||||
Hosts: fmt.Sprintf("testhostname%d", i),
|
||||
IP: fmt.Sprintf("%d.%d.%d.%d", i, i, i, i),
|
||||
}
|
||||
records = append(records, record)
|
||||
if i%2 == 0 {
|
||||
toDelete = append(records, record)
|
||||
}
|
||||
}
|
||||
|
||||
if err := Add(file.Name(), records); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
|
||||
b.StartTimer()
|
||||
if err := Delete(file.Name(), toDelete); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkDelete(b *testing.B) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
benchDelete(b)
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user