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package eureka
import (
"errors"
"fmt"
"reflect"
"sync"
"time"
"github.com/go-kit/log"
"github.com/hudl/fargo"
)
type testConnection struct {
mu sync.RWMutex
instances []*fargo.Instance
errApplication error
errHeartbeat error
errRegister error
errDeregister error
}
var (
errTest = errors.New("kaboom")
errNotFound = &fargoUnsuccessfulHTTPResponse{statusCode: 404, messagePrefix: "not found"}
loggerTest = log.NewNopLogger()
appNameTest = "go-kit"
instanceTest1 = &fargo.Instance{
HostName: "serveregistrar1.acme.org",
Port: 8080,
App: appNameTest,
IPAddr: "192.168.0.1",
VipAddress: "192.168.0.1",
SecureVipAddress: "192.168.0.1",
HealthCheckUrl: "http://serveregistrar1.acme.org:8080/healthz",
StatusPageUrl: "http://serveregistrar1.acme.org:8080/status",
HomePageUrl: "http://serveregistrar1.acme.org:8080/",
Status: fargo.UP,
DataCenterInfo: fargo.DataCenterInfo{Name: fargo.MyOwn},
LeaseInfo: fargo.LeaseInfo{RenewalIntervalInSecs: 1},
}
instanceTest2 = &fargo.Instance{
HostName: "serveregistrar2.acme.org",
Port: 8080,
App: appNameTest,
IPAddr: "192.168.0.2",
VipAddress: "192.168.0.2",
SecureVipAddress: "192.168.0.2",
HealthCheckUrl: "http://serveregistrar2.acme.org:8080/healthz",
StatusPageUrl: "http://serveregistrar2.acme.org:8080/status",
HomePageUrl: "http://serveregistrar2.acme.org:8080/",
Status: fargo.UP,
DataCenterInfo: fargo.DataCenterInfo{Name: fargo.MyOwn},
}
)
var _ fargoConnection = (*testConnection)(nil)
func (c *testConnection) RegisterInstance(i *fargo.Instance) error {
if c.errRegister != nil {
return c.errRegister
}
c.mu.Lock()
defer c.mu.Unlock()
for _, instance := range c.instances {
if reflect.DeepEqual(*instance, *i) {
return errors.New("already registered")
}
}
c.instances = append(c.instances, i)
return nil
}
func (c *testConnection) HeartBeatInstance(i *fargo.Instance) error {
return c.errHeartbeat
}
func (c *testConnection) DeregisterInstance(i *fargo.Instance) error {
if c.errDeregister != nil {
return c.errDeregister
}
c.mu.Lock()
defer c.mu.Unlock()
remaining := make([]*fargo.Instance, 0, len(c.instances))
for _, instance := range c.instances {
if reflect.DeepEqual(*instance, *i) {
continue
}
remaining = append(remaining, instance)
}
if len(remaining) == len(c.instances) {
return errors.New("not registered")
}
c.instances = remaining
return nil
}
func (c *testConnection) ReregisterInstance(ins *fargo.Instance) error {
return nil
}
func (c *testConnection) instancesForApplication(name string) []*fargo.Instance {
c.mu.RLock()
defer c.mu.RUnlock()
instances := make([]*fargo.Instance, 0, len(c.instances))
for _, i := range c.instances {
if i.App == name {
instances = append(instances, i)
}
}
return instances
}
func (c *testConnection) GetApp(name string) (*fargo.Application, error) {
if err := c.errApplication; err != nil {
return nil, err
}
instances := c.instancesForApplication(name)
if len(instances) == 0 {
return nil, fmt.Errorf("application not found for name=%s", name)
}
return &fargo.Application{Name: name, Instances: instances}, nil
}
func (c *testConnection) ScheduleAppUpdates(name string, await bool, done <-chan struct{}) <-chan fargo.AppUpdate {
updatec := make(chan fargo.AppUpdate, 1)
send := func() {
app, err := c.GetApp(name)
select {
case updatec <- fargo.AppUpdate{App: app, Err: err}:
default:
}
}
if await {
send()
}
go func() {
ticker := time.NewTicker(100 * time.Millisecond)
for {
select {
case <-ticker.C:
send()
case <-done:
ticker.Stop()
return
}
}
}()
return updatec
}
|
