Golang Pool Examples

Example #1

File: registry.go Project: cloudfoundry/gorouter

func (r *RouteRegistry) LookupWithInstance(uri route.Uri, appId string, appIndex string) *route.Pool {
	uri = uri.RouteKey()
	p := r.Lookup(uri)

	var surgicalPool *route.Pool

	p.Each(func(e *route.Endpoint) {
		if (e.ApplicationId == appId) && (e.PrivateInstanceIndex == appIndex) {
			surgicalPool = route.NewPool(0, "")
			surgicalPool.Put(e)
		}
	})
	return surgicalPool
}

Example #2

File: leastconnection_test.go Project: cloudfoundry/gorouter

package route_test

import (
	"fmt"
	"time"

	"code.cloudfoundry.org/gorouter/route"
	"code.cloudfoundry.org/routing-api/models"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("LeastConnection", func() {
	var pool *route.Pool

	BeforeEach(func() {
		pool = route.NewPool(2*time.Minute, "")
	})

	Describe("Next", func() {

		Context("when pool is empty", func() {
			It("does not select an endpoint", func() {
				iter := route.NewLeastConnection(pool, "")
				Expect(iter.Next()).To(BeNil())
			})
		})

		Context("when pool has endpoints", func() {
			var (
				endpoints []*route.Endpoint

Example #3

File: roundrobin_test.go Project: cloudfoundry/gorouter

package route_test

import (
	"time"

	"code.cloudfoundry.org/gorouter/route"
	"code.cloudfoundry.org/routing-api/models"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("RoundRobin", func() {
	var pool *route.Pool
	var modTag models.ModificationTag

	BeforeEach(func() {
		pool = route.NewPool(2*time.Minute, "")
		modTag = models.ModificationTag{}
	})

	Describe("Next", func() {
		It("performs round-robin through the endpoints", func() {
			e1 := route.NewEndpoint("", "1.2.3.4", 5678, "", "", nil, -1, "", modTag)
			e2 := route.NewEndpoint("", "5.6.7.8", 1234, "", "", nil, -1, "", modTag)
			e3 := route.NewEndpoint("", "1.2.7.8", 1234, "", "", nil, -1, "", modTag)
			endpoints := []*route.Endpoint{e1, e2, e3}

			for _, e := range endpoints {
				pool.Put(e)
			}

Example #4

File: pool_test.go Project: cloudfoundry/gorouter

package route_test

import (
	"fmt"
	"time"

	"code.cloudfoundry.org/gorouter/route"
	"code.cloudfoundry.org/routing-api/models"
	. "github.com/onsi/ginkgo"
	. "github.com/onsi/gomega"
)

var _ = Describe("Pool", func() {
	var pool *route.Pool
	var modTag models.ModificationTag

	BeforeEach(func() {
		pool = route.NewPool(2*time.Minute, "")
		modTag = models.ModificationTag{}
	})

	Context("Put", func() {
		It("adds endpoints", func() {
			endpoint := &route.Endpoint{}

			b := pool.Put(endpoint)
			Expect(b).To(BeTrue())
		})

		It("handles duplicate endpoints", func() {
			endpoint := route.NewEndpoint("", "1.2.3.4", 5678, "", "", nil, 1, "", modTag)