Tony Blyler
6 years ago
parent
daddfcac0d
commit
55baf08605
@ -0,0 +1,4 @@
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# SheepMQ
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Aiming to be a robust message queue library and daemon with a variety of storage backends.
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# Still a work in progress
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@ -0,0 +1,34 @@
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package lease
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import "time"
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// Heart contains a lease that survives when heartbeats happen within a given ttl interval
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type Heart struct {
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lastBeat time.Time
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ttl time.Duration
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}
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// NewHeart creates a new heart instance
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func NewHeart(ttl int64) *Heart {
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ttlDuration := time.Nanosecond * time.Duration(ttl)
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return &Heart{
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lastBeat: time.Now(),
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ttl: ttlDuration,
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}
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}
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// Valid tries to beat the heart, true if still alive, false if dead
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func (h *Heart) Valid() bool {
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if !h.Check() {
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return false
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}
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// update the last beat to now
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h.lastBeat = time.Now()
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return true
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}
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// Check if the heartbeat is valid
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func (h *Heart) Check() bool {
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return time.Since(h.lastBeat) <= h.ttl
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}
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@ -0,0 +1,52 @@
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package lease
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import (
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"testing"
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"time"
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)
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func TestHeartCheck(t *testing.T) {
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heart := NewHeart(int64(time.Second))
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if !heart.Check() {
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t.Error("Heartbeat check failed first check too soon")
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}
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time.Sleep(time.Second + time.Nanosecond)
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if heart.Check() {
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t.Error("Heartbeat check succeeded after its ttl")
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}
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}
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func TestHeartValid(t *testing.T) {
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heart := NewHeart(int64(time.Second))
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if !heart.Valid() {
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t.Error("Heartbeat valid failed first check too soon")
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}
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time.Sleep(time.Second / 3)
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if !heart.Valid() {
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t.Error("Heartbeat valid failed second check too soon")
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}
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time.Sleep(time.Second / 2)
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if !heart.Valid() {
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t.Error("Hearbeat valid failed third check too soon")
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}
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time.Sleep(time.Second / 2)
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if !heart.Valid() {
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t.Error("Heartbeat valid failed fourth check too soon")
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}
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time.Sleep(time.Second)
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if heart.Valid() {
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t.Error("Heartbeat valid succeeded after its ttl")
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}
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}
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@ -0,0 +1,10 @@
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package lease
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// Leaser denotes whether a given lease is still valid
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type Leaser interface {
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// Update and check the leaser
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Valid() bool
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// Check the leaser without any sort of updates
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Check() bool
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}
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@ -0,0 +1,94 @@
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package lease
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import (
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"errors"
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"sync"
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"github.com/tblyler/sheepmq/shepard"
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)
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var (
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// ErrLeased denotes the item is already leased
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ErrLeased = errors.New("Item is already leased")
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// ErrNoLeaser denotes no leaser was provided to add a lease
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ErrNoLeaser = errors.New("No leaser provided")
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)
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// Manager contains many leases and their validity
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type Manager struct {
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leases map[uint64]Leaser
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locker sync.RWMutex
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}
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// NewManager creates a new Manager instance
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func NewManager() *Manager {
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return &Manager{
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leases: make(map[uint64]Leaser),
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}
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}
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// AddLease to the manager for the given item
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func (m *Manager) AddLease(id uint64, info *shepard.GetInfo) error {
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if m.CheckLease(id) {
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return ErrLeased
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}
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var leaser Leaser
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if info.TimeoutLease != nil {
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leaser = NewTimeout(info.TimeoutLease.Ttl)
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} else if info.PidLease != nil {
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leaser = NewPID(int(info.PidLease.Pid))
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} else if info.HeartLease != nil {
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leaser = NewHeart(info.HeartLease.Ttl)
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} else {
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return ErrNoLeaser
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}
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m.locker.Lock()
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m.leases[id] = leaser
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m.locker.Unlock()
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return nil
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}
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// CheckLease for validity
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func (m *Manager) CheckLease(id uint64) bool {
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m.locker.RLock()
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lease, exists := m.leases[id]
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if !exists {
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m.locker.RUnlock()
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return false
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}
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ret := lease.Valid()
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m.locker.RUnlock()
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if !ret {
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// delete the lease since it is no longer valid
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m.locker.Lock()
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delete(m.leases, id)
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m.locker.Unlock()
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}
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return ret
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}
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// PruneLeases that fail their checks
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func (m *Manager) PruneLeases() {
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deleteKeys := []uint64{}
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m.locker.RLock()
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for key, lease := range m.leases {
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if !lease.Check() {
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deleteKeys = append(deleteKeys, key)
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}
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}
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m.locker.RUnlock()
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m.locker.Lock()
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for _, key := range deleteKeys {
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delete(m.leases, key)
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}
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m.locker.Unlock()
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}
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@ -0,0 +1,134 @@
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package lease
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import (
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"testing"
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"time"
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"github.com/tblyler/sheepmq/shepard"
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)
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func TestManagerAddCheckLease(t *testing.T) {
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manager := NewManager()
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info := &shepard.GetInfo{}
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err := manager.AddLease(123, info)
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if err != ErrNoLeaser {
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t.Error("Failed to get ErrNoLeaser on add lease got", err)
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}
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info.PidLease = &shepard.PidLease{
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// use a bad PID
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Pid: 0,
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}
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err = manager.AddLease(123, info)
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if err != nil {
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t.Error("Failed to add a crappy PID leaser", err)
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}
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err = manager.AddLease(123, info)
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if err != nil {
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t.Error("Failed to add a crappy PID leaser ontop of another", err)
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}
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info.PidLease = nil
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info.HeartLease = &shepard.HeartbeatLease{
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Ttl: int64(time.Second / 2),
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}
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err = manager.AddLease(2, info)
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if err != nil {
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t.Error("Failed to add a valid heartbeat lease", err)
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}
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if !manager.CheckLease(2) {
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t.Error("Failed to check for valid heartbeat lease")
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}
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info.HeartLease = nil
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info.TimeoutLease = &shepard.TimeLease{
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Ttl: int64(time.Second),
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}
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err = manager.AddLease(123, info)
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if err != nil {
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t.Error("Failed to add a good timeout lease of 1 second")
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}
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err = manager.AddLease(123, info)
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if err == nil {
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t.Error("Should not be able to add a lease ontop of another valid one")
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}
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err = manager.AddLease(124, info)
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if err != nil {
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t.Error("Failed to add a valid lease against a different id", err)
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}
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if !manager.CheckLease(123) {
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t.Error("Failed to make sure valid lease was valid")
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}
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if !manager.CheckLease(124) {
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t.Error("Failed to make sure valid lease was valid")
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}
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time.Sleep(time.Second)
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if manager.CheckLease(123) {
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t.Error("failed to make sure invalid lease was invalid")
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}
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if manager.CheckLease(124) {
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t.Error("failed to make sure invalid lease was invalid")
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}
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}
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func TestManagerPruneLeases(t *testing.T) {
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manager := NewManager()
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info := &shepard.GetInfo{}
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info.PidLease = &shepard.PidLease{
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Pid: 0,
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}
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err := manager.AddLease(5, info)
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if err != nil {
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t.Error("Failed to add crappy PID lease", err)
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}
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info.PidLease = nil
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info.TimeoutLease = &shepard.TimeLease{
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Ttl: int64(time.Second),
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}
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err = manager.AddLease(2, info)
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if err != nil {
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t.Error("Failed to add valid timeout lease", err)
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}
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info.TimeoutLease = nil
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info.HeartLease = &shepard.HeartbeatLease{
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Ttl: int64(time.Second),
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}
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err = manager.AddLease(1, info)
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if err != nil {
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t.Error("Failed to add valid heartbeat lease", err)
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}
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manager.PruneLeases()
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if len(manager.leases) != 2 {
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t.Errorf("Should have 2 leases left, have %d", len(manager.leases))
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}
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time.Sleep(time.Second)
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manager.PruneLeases()
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if len(manager.leases) != 0 {
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t.Errorf("Should have 0 leases left, have %d", len(manager.leases))
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}
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}
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@ -0,0 +1,34 @@
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package lease
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import (
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"os"
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"syscall"
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)
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// PID contains a lease that is valid until the given PID no longer exists
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type PID struct {
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pid int
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}
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// NewPID creates a new PID leaser instance
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func NewPID(pid int) *PID {
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return &PID{
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pid: pid,
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}
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}
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// Valid checks if the PID still exists
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func (p *PID) Valid() bool {
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return p.Check()
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}
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// Check if the PID still exists
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func (p *PID) Check() bool {
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process, err := os.FindProcess(p.pid)
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if err != nil {
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return false
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}
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// if nil, PID exists
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return process.Signal(syscall.Signal(0)) == nil
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}
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@ -0,0 +1,31 @@
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package lease
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import (
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"os/exec"
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"testing"
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)
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func TestPIDValid(t *testing.T) {
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// create a sleep command for 1 second
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cmd := exec.Command("sleep", "1")
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err := cmd.Start()
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if err != nil {
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t.Fatal("Failed to create a sleep process:", err)
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}
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pid := NewPID(cmd.Process.Pid)
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if !pid.Valid() {
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t.Error("PID died too soon")
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}
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cmd.Wait()
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if pid.Valid() {
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t.Error("PID didn't die somehow")
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}
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pid = NewPID(-1)
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if pid.Valid() {
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t.Error("Negative PIDS are not a thing")
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}
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}
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@ -0,0 +1,27 @@
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package lease
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import (
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"time"
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)
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// Timeout expires after a given timeout
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type Timeout struct {
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eol time.Time
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}
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// NewTimeout creates a new timeout instance
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func NewTimeout(ttl int64) *Timeout {
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return &Timeout{
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eol: time.Now().Add(time.Nanosecond * time.Duration(ttl)),
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}
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}
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// Valid Determines whether the timeout has been reached
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func (t *Timeout) Valid() bool {
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return t.Check()
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}
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// Check if the timeout has been reached
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func (t *Timeout) Check() bool {
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return time.Now().Before(t.eol)
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}
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@ -0,0 +1,26 @@
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package lease
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import (
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"testing"
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"time"
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)
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func TestTimeoutValid(t *testing.T) {
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timeout := NewTimeout(int64(time.Second))
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if !timeout.Valid() {
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t.Error("timeout valid failed too soon")
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}
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time.Sleep(time.Nanosecond * 100)
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if !timeout.Valid() {
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t.Error("timeout valid failed too soon")
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}
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time.Sleep(time.Second - (time.Nanosecond * 100))
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if timeout.Valid() {
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t.Error("timeout valid should not be succeeding")
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}
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}
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@ -0,0 +1,52 @@
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package main
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import (
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"fmt"
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"net"
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"google.golang.org/grpc"
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flag "github.com/spf13/pflag"
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"github.com/tblyler/sheepmq/sheepmq"
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"github.com/tblyler/sheepmq/shepard"
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)
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func main() {
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var port uint16
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var listenAddr string
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flag.StringVarP(&listenAddr, "addr", "h", "", "The address to listen on")
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flag.Uint16VarP(&port, "port", "p", 0, "The port to bind")
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flag.Parse()
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listenAddr = fmt.Sprintf("%s:%d", listenAddr, port)
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listener, err := net.Listen("tcp", listenAddr)
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if err != nil {
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fmt.Printf("Failed to listen on %s: %s", listenAddr, err)
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return
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}
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defer listener.Close()
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fmt.Println("Listening on", listener.Addr())
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grpcServer := grpc.NewServer()
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sheepmqServer, err := sheepmq.NewServer()
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if err != nil {
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fmt.Println("Failed to open sheepmq server:", err)
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return
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}
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sheepmqGServer := sheepmq.NewGServer(sheepmqServer)
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if err != nil {
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fmt.Println("Failed to create sheepmq server:", err)
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return
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}
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shepard.RegisterLoqServer(grpcServer, sheepmqServer)
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grpcServer.Serve(listener)
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}
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@ -0,0 +1,157 @@
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package queue
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import (
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"os"
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"sync/atomic"
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"github.com/dgraph-io/badger/badger"
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"github.com/golang/protobuf/proto"
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"github.com/tblyler/sheepmq/lease"
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"github.com/tblyler/sheepmq/shepard"
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)
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// Badger uses Badger KV store as a queue backend
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type Badger struct {
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opts *Options
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bopts *badger.Options
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kv *badger.KV
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currentID uint64
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idconv *idConverter
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leases *lease.Manager
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}
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// NewBadger creates a new instance of a Badger-backed Queue
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func NewBadger(opts *Options) (*Badger, error) {
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// use default badger options if none provided
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var bopts badger.Options
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if opts.BadgerOptions == nil {
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bopts = badger.DefaultOptions
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} else {
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bopts = *opts.BadgerOptions
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}
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// make sure the directory exists
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err := os.MkdirAll(opts.Dir, defaultFilePerm)
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if err != nil {
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return nil, err
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}
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// always honor Options' dir setting over badger.Options' dir settings
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bopts.Dir = opts.Dir
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bopts.ValueDir = opts.Dir
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// try to open new badger key value instance with the given options
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kv, err := badger.NewKV(&bopts)
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if err != nil {
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return nil, err
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}
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var currentID uint64
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iter := kv.NewIterator(badger.IteratorOptions{
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PrefetchSize: 5,
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FetchValues: false,
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Reverse: true,
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})
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defer iter.Close()
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for iter.Rewind(); iter.Valid(); iter.Next() {
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currentID, err = byteToID(iter.Item().Key())
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if err == nil {
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break
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}
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||||
|
||||
// try to delete invalid entries
|
||||
kv.Delete(iter.Item().Key())
|
||||
currentID = 0
|
||||
}
|
||||
|
||||
return &Badger{
|
||||
opts: opts,
|
||||
bopts: &bopts,
|
||||
kv: kv,
|
||||
currentID: currentID,
|
||||
idconv: newIDConverter(),
|
||||
leases: lease.NewManager(),
|
||||
}, nil
|
||||
}
|
||||
|
||||
// Close the internal key value store
|
||||
func (b *Badger) Close() error {
|
||||
return b.kv.Close()
|
||||
}
|
||||
|
||||
// Get the next available ID atomically
|
||||
func (b *Badger) getID() uint64 {
|
||||
return atomic.AddUint64(&b.currentID, 1)
|
||||
}
|
||||
|
||||
// AddItem to the queue
|
||||
func (b *Badger) AddItem(item *shepard.Item) error {
|
||||
item.Id = b.getID()
|
||||
|
||||
data, err := proto.Marshal(item)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
byteID := b.idconv.idToByte(item.Id)
|
||||
defer b.idconv.put(byteID)
|
||||
|
||||
return b.kv.Set(byteID, data)
|
||||
}
|
||||
|
||||
// GetItem from the queue
|
||||
func (b *Badger) GetItem(info *shepard.GetInfo, itemChan chan<- *shepard.Item) error {
|
||||
iter := b.kv.NewIterator(badger.IteratorOptions{
|
||||
PrefetchSize: 500,
|
||||
FetchValues: true,
|
||||
Reverse: false,
|
||||
})
|
||||
|
||||
defer iter.Close()
|
||||
|
||||
var count uint64
|
||||
for iter.Rewind(); iter.Valid() && count < info.Count; iter.Next() {
|
||||
item := iter.Item()
|
||||
id, err := byteToID(item.Key())
|
||||
if err != nil {
|
||||
// try to delete bad keys (don't care about failures)
|
||||
b.kv.Delete(item.Key())
|
||||
continue
|
||||
}
|
||||
|
||||
err = b.leases.AddLease(id, info)
|
||||
if err == nil || err == lease.ErrNoLeaser {
|
||||
ret := &shepard.Item{}
|
||||
err = proto.Unmarshal(item.Value(), ret)
|
||||
if err != nil {
|
||||
// delete bad values
|
||||
b.kv.Delete(item.Key())
|
||||
continue
|
||||
}
|
||||
|
||||
count++
|
||||
itemChan <- ret
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// DelItem from the queue
|
||||
func (b *Badger) DelItem(info *shepard.DelInfo) error {
|
||||
var err error
|
||||
for _, id := range info.GetIds() {
|
||||
idByte := b.idconv.idToByte(id)
|
||||
err = b.kv.Delete(idByte)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
b.idconv.put(idByte)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
@ -0,0 +1,233 @@
|
||||
package queue
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/rand"
|
||||
"fmt"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"reflect"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/dgraph-io/badger/badger"
|
||||
"github.com/tblyler/sheepmq/shepard"
|
||||
)
|
||||
|
||||
func TestNewBadger(t *testing.T) {
|
||||
// test a bad dir setting
|
||||
opts := &Options{
|
||||
Dir: "",
|
||||
}
|
||||
|
||||
_, err := NewBadger(opts)
|
||||
if err == nil {
|
||||
t.Error("Failed to get error on bad Dir setting")
|
||||
}
|
||||
|
||||
opts.Dir = filepath.Join(os.TempDir(), "NewBadgerTest")
|
||||
|
||||
// ensure clean directory
|
||||
os.RemoveAll(opts.Dir)
|
||||
defer os.RemoveAll(opts.Dir)
|
||||
|
||||
b, err := NewBadger(opts)
|
||||
if err != nil {
|
||||
t.Fatal("Failed to create badger with default options")
|
||||
}
|
||||
|
||||
if b.currentID != 0 {
|
||||
t.Error("Current ID of an empty badger db should be 0 not", b.currentID)
|
||||
}
|
||||
|
||||
err = b.AddItem(&shepard.Item{})
|
||||
if err != nil {
|
||||
t.Fatal("Failed to add empty item", err)
|
||||
}
|
||||
|
||||
if b.currentID != 1 {
|
||||
t.Error("Current ID of a one item db should be 1 not", b.currentID)
|
||||
}
|
||||
|
||||
b.Close()
|
||||
|
||||
opts.BadgerOptions = &badger.Options{}
|
||||
|
||||
// make sure custom badger options are honored
|
||||
*opts.BadgerOptions = badger.DefaultOptions
|
||||
opts.BadgerOptions.SyncWrites = !opts.BadgerOptions.SyncWrites
|
||||
|
||||
b, err = NewBadger(opts)
|
||||
if err != nil {
|
||||
t.Fatal("Failed to use custom badger optoins", err)
|
||||
}
|
||||
|
||||
defer b.Close()
|
||||
|
||||
if b.bopts.SyncWrites != opts.BadgerOptions.SyncWrites {
|
||||
t.Error("Failed to use custom badger options")
|
||||
}
|
||||
|
||||
if b.currentID != 1 {
|
||||
t.Error("current id != 1 got", b.currentID)
|
||||
}
|
||||
}
|
||||
|
||||
func TestBadgerAddGetItem(t *testing.T) {
|
||||
items := make([]*shepard.Item, 32)
|
||||
|
||||
for i := range items {
|
||||
items[i] = &shepard.Item{}
|
||||
|
||||
items[i].Data = make([]byte, 256*(i+1))
|
||||
rand.Read(items[i].Data)
|
||||
items[i].Ctime = time.Now().Unix()
|
||||
items[i].Queue = fmt.Sprint("testing", i)
|
||||
items[i].Stats = map[string]int64{
|
||||
"cool": 133333337,
|
||||
"notcool": 0,
|
||||
"#1": 1,
|
||||
"datSize": int64(len(items[i].Data)),
|
||||
}
|
||||
}
|
||||
|
||||
opts := &Options{
|
||||
Dir: filepath.Join(os.TempDir(), "TestBadgerAddGetItem"),
|
||||
}
|
||||
|
||||
os.RemoveAll(opts.Dir)
|
||||
defer os.RemoveAll(opts.Dir)
|
||||
|
||||
b, err := NewBadger(opts)
|
||||
if err != nil {
|
||||
t.Fatal("Failed to open badger", err)
|
||||
}
|
||||
|
||||
defer b.Close()
|
||||
|
||||
for i, item := range items {
|
||||
err = b.AddItem(item)
|
||||
if err != nil {
|
||||
t.Error("Failed to add item", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
itemChan := make(chan *shepard.Item, len(items))
|
||||
err = b.GetItem(&shepard.GetInfo{
|
||||
Count: uint64(len(items)),
|
||||
}, itemChan)
|
||||
|
||||
close(itemChan)
|
||||
if err != nil {
|
||||
t.Error("Failed to get items", err)
|
||||
}
|
||||
|
||||
i := 0
|
||||
for item := range itemChan {
|
||||
if item.Ctime != items[i].Ctime {
|
||||
t.Error("item ctimes", item.Ctime, items[i].Ctime)
|
||||
}
|
||||
|
||||
if item.Queue != items[i].Queue {
|
||||
t.Error("item queues", item.Queue, items[i].Queue)
|
||||
}
|
||||
|
||||
if !bytes.Equal(item.Data, items[i].Data) {
|
||||
t.Error("item data", item.Data, items[i].Data)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(item.Stats, items[i].Stats) {
|
||||
t.Error("item stats", item.Stats, items[i].Stats)
|
||||
}
|
||||
|
||||
i++
|
||||
}
|
||||
|
||||
if i != len(items) {
|
||||
t.Error("got", i, "items expected", len(items))
|
||||
}
|
||||
}
|
||||
|
||||
func TestBadgerDelItem(t *testing.T) {
|
||||
opts := &Options{
|
||||
Dir: filepath.Join(os.TempDir(), "TestBadgerAddGetItem"),
|
||||
}
|
||||
|
||||
os.RemoveAll(opts.Dir)
|
||||
defer os.RemoveAll(opts.Dir)
|
||||
|
||||
b, err := NewBadger(opts)
|
||||
if err != nil {
|
||||
t.Fatal("Failed to start badger", err)
|
||||
}
|
||||
|
||||
items := make([]*shepard.Item, 32)
|
||||
for i := range items {
|
||||
items[i] = &shepard.Item{
|
||||
Ctime: time.Now().Unix(),
|
||||
Data: make([]byte, 256*(i+1)),
|
||||
Queue: "The queue",
|
||||
Stats: map[string]int64{
|
||||
"lol": 10101010101,
|
||||
"index": int64(i),
|
||||
"datasize:": int64(256 * (i + 1)),
|
||||
},
|
||||
}
|
||||
rand.Read(items[i].Data)
|
||||
|
||||
err = b.AddItem(items[i])
|
||||
if err != nil {
|
||||
t.Error("Failed to add item", i, err)
|
||||
}
|
||||
}
|
||||
|
||||
delinfo := &shepard.DelInfo{}
|
||||
for i := range items {
|
||||
if i%2 == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
delinfo.Ids = append(delinfo.Ids, uint64(i))
|
||||
}
|
||||
|
||||
err = b.DelItem(delinfo)
|
||||
if err != nil {
|
||||
t.Error("Failed to delete", delinfo.Ids, err)
|
||||
}
|
||||
|
||||
getinfo := &shepard.GetInfo{
|
||||
Count: uint64(len(items) - len(delinfo.Ids)),
|
||||
}
|
||||
getChan := make(chan *shepard.Item, getinfo.Count)
|
||||
|
||||
err = b.GetItem(getinfo, getChan)
|
||||
if err != nil {
|
||||
t.Error("Failed to get items", err)
|
||||
}
|
||||
|
||||
close(getChan)
|
||||
|
||||
i := 1
|
||||
for item := range getChan {
|
||||
if item.Ctime != items[i].Ctime {
|
||||
t.Error("item ctimes", item.Ctime, items[i].Ctime)
|
||||
}
|
||||
|
||||
if item.Queue != items[i].Queue {
|
||||
t.Error("item queues", item.Queue, items[i].Queue)
|
||||
}
|
||||
|
||||
if !bytes.Equal(item.Data, items[i].Data) {
|
||||
t.Error("item data", item.Data, items[i].Data)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(item.Stats, items[i].Stats) {
|
||||
t.Error("item stats", item.Stats, items[i].Stats)
|
||||
}
|
||||
i += 2
|
||||
}
|
||||
|
||||
if i != len(items)+1 {
|
||||
t.Error("only looped to item index", i)
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,70 @@
|
||||
package queue
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"os"
|
||||
"sync"
|
||||
|
||||
"github.com/dgraph-io/badger/badger"
|
||||
"github.com/tblyler/sheepmq/shepard"
|
||||
)
|
||||
|
||||
const (
|
||||
idByteSize = 8
|
||||
defaultFilePerm = os.FileMode(0700)
|
||||
)
|
||||
|
||||
// Queue defines a resource to store queue items
|
||||
type Queue interface {
|
||||
AddItem(*shepard.Item) error
|
||||
GetItem(*shepard.GetInfo) (*shepard.Item, error)
|
||||
DelItem(*shepard.DelInfo) error
|
||||
}
|
||||
|
||||
// Options to be used when creating a new Queue
|
||||
type Options struct {
|
||||
// Directory to store queue data
|
||||
Dir string
|
||||
|
||||
// Badger queue specific options
|
||||
BadgerOptions *badger.Options
|
||||
}
|
||||
|
||||
type idConverter struct {
|
||||
pool sync.Pool
|
||||
}
|
||||
|
||||
func newIDConverter() *idConverter {
|
||||
return &idConverter{
|
||||
pool: sync.Pool{
|
||||
New: func() interface{} {
|
||||
return make([]byte, idByteSize)
|
||||
},
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func (i *idConverter) idToByte(id uint64) []byte {
|
||||
buf := i.pool.Get().([]byte)
|
||||
|
||||
binary.LittleEndian.PutUint64(buf, id)
|
||||
|
||||
return buf
|
||||
}
|
||||
|
||||
func (i *idConverter) put(data []byte) {
|
||||
i.pool.Put(data)
|
||||
}
|
||||
|
||||
func byteToID(data []byte) (uint64, error) {
|
||||
if len(data) < idByteSize {
|
||||
return 0, fmt.Errorf(
|
||||
"unable to convert byte slice length of %d, need at least %d",
|
||||
len(data),
|
||||
idByteSize,
|
||||
)
|
||||
}
|
||||
|
||||
return binary.LittleEndian.Uint64(data), nil
|
||||
}
|
||||
@ -0,0 +1,67 @@
|
||||
package queue
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"math"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestIDConverter(t *testing.T) {
|
||||
idconv := newIDConverter()
|
||||
|
||||
idByte := idconv.idToByte(math.MaxUint64)
|
||||
|
||||
// reserved keywords become english mistakes
|
||||
for _, bite := range idByte {
|
||||
if bite != byte(255) {
|
||||
t.Error("maxuint64 is not all max bytes", idByte)
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
idconv.put(idByte)
|
||||
|
||||
firstAddress := reflect.ValueOf(idByte).Pointer()
|
||||
|
||||
idByte = idconv.idToByte(0)
|
||||
secondAddress := reflect.ValueOf(idByte).Pointer()
|
||||
|
||||
if firstAddress != secondAddress {
|
||||
t.Error("Failed to use byte pool")
|
||||
}
|
||||
|
||||
for _, bite := range idByte {
|
||||
if bite != 0 {
|
||||
t.Error("zero should be all zero bytes", idByte)
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
idconv.put(idByte)
|
||||
|
||||
id := uint64(582348138342)
|
||||
idByte = idconv.idToByte(id)
|
||||
knownByte := []byte{
|
||||
102, 103, 167, 150, 135, 0, 0, 0,
|
||||
}
|
||||
|
||||
if !bytes.Equal(idByte, knownByte) {
|
||||
t.Error("Failed to encode id exepect", knownByte, "got", idByte)
|
||||
}
|
||||
|
||||
idconv.put(idByte)
|
||||
|
||||
newID, err := byteToID(knownByte)
|
||||
if err != nil {
|
||||
t.Error("error converting byte to id", err)
|
||||
}
|
||||
if newID != id {
|
||||
t.Error("expected id", id, "got", newID)
|
||||
}
|
||||
|
||||
_, err = byteToID([]byte{1, 2, 3, 4, 5})
|
||||
if err == nil {
|
||||
t.Error("Failed to get error for bad byte to id data")
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,74 @@
|
||||
package sheepmq
|
||||
|
||||
import (
|
||||
"io"
|
||||
|
||||
"github.com/tblyler/sheepmq/shepard"
|
||||
|
||||
context "golang.org/x/net/context"
|
||||
)
|
||||
|
||||
// GServer encapsulates all sheepmq GRPC server activity
|
||||
type GServer struct {
|
||||
sheepmq *SheepMQ
|
||||
}
|
||||
|
||||
// NewGServer creates a new sheepmq GRPC server instance
|
||||
func NewGServer(sheepmq *SheepMQ) *GServer {
|
||||
return &GServer{
|
||||
sheepmq: sheepmq,
|
||||
}
|
||||
}
|
||||
|
||||
// AddItem to sheepmq's queue
|
||||
func (l *GServer) AddItem(stream shepard.Sheepmq_AddItemServer) error {
|
||||
for {
|
||||
item, err := stream.Recv()
|
||||
if err == io.EOF {
|
||||
return nil
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
resp, _ := l.sheepmq.AddItem(item)
|
||||
err = stream.Send(resp)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if !resp.GetSuccess() {
|
||||
return nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// GetItem from sheepmq's queue
|
||||
func (l *GServer) GetItem(info *shepard.GetInfo, stream shepard.Sheepmq_GetItemServer) error {
|
||||
items := make(chan *shepard.Item, 32)
|
||||
|
||||
var err error
|
||||
go func() {
|
||||
err = l.sheepmq.GetItems(info, items)
|
||||
close(items)
|
||||
}()
|
||||
|
||||
for item := range items {
|
||||
err := stream.Send(item)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
// DelItem from sheepmq's queue
|
||||
func (l *GServer) DelItem(ctx context.Context, info *shepard.DelInfo) (*shepard.Response, error) {
|
||||
return l.sheepmq.DelItem(info)
|
||||
}
|
||||
|
||||
// ErrItem from sheepmq's queue
|
||||
func (l *GServer) ErrItem(ctx context.Context, info *shepard.ErrInfo) (*shepard.Response, error) {
|
||||
return l.sheepmq.ErrItem(info)
|
||||
}
|
||||
@ -0,0 +1,38 @@
|
||||
package sheepmq
|
||||
|
||||
import (
|
||||
"github.com/tblyler/sheepmq/queue"
|
||||
"github.com/tblyler/sheepmq/shepard"
|
||||
)
|
||||
|
||||
// SheepMQ encapsulates the sheepmq queue logic
|
||||
type SheepMQ struct {
|
||||
queues map[string]*queue.Queue
|
||||
}
|
||||
|
||||
// NewSheepMQ creates a new sheepmq instance with the given configuration
|
||||
func NewSheepMQ() (*SheepMQ, error) {
|
||||
return &SheepMQ{
|
||||
queues: make(map[string]*queue.Queue),
|
||||
}, nil
|
||||
}
|
||||
|
||||
// AddItem to the sheepmq queue
|
||||
func (l *SheepMQ) AddItem(item *shepard.Item) (*shepard.Response, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// GetItems from sheepmq's queue
|
||||
func (l *SheepMQ) GetItems(info *shepard.GetInfo, items chan<- *shepard.Item) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// DelItem from sheepmq's queue
|
||||
func (l *SheepMQ) DelItem(info *shepard.DelInfo) (*shepard.Response, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// ErrItem from sheepmq's queue
|
||||
func (l *SheepMQ) ErrItem(info *shepard.ErrInfo) (*shepard.Response, error) {
|
||||
return nil, nil
|
||||
}
|
||||
@ -0,0 +1,607 @@
|
||||
// Code generated by protoc-gen-go. DO NOT EDIT.
|
||||
// source: shepard.proto
|
||||
|
||||
/*
|
||||
Package shepard is a generated protocol buffer package.
|
||||
|
||||
It is generated from these files:
|
||||
shepard.proto
|
||||
|
||||
It has these top-level messages:
|
||||
Response
|
||||
Item
|
||||
GetInfo
|
||||
TimeLease
|
||||
PidLease
|
||||
HeartbeatLease
|
||||
DelInfo
|
||||
ErrInfo
|
||||
*/
|
||||
package shepard
|
||||
|
||||
import proto "github.com/golang/protobuf/proto"
|
||||
import fmt "fmt"
|
||||
import math "math"
|
||||
|
||||
import (
|
||||
context "golang.org/x/net/context"
|
||||
grpc "google.golang.org/grpc"
|
||||
)
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
var _ = proto.Marshal
|
||||
var _ = fmt.Errorf
|
||||
var _ = math.Inf
|
||||
|
||||
// This is a compile-time assertion to ensure that this generated file
|
||||
// is compatible with the proto package it is being compiled against.
|
||||
// A compilation error at this line likely means your copy of the
|
||||
// proto package needs to be updated.
|
||||
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
|
||||
|
||||
type Response struct {
|
||||
// whether or not the operation was successful
|
||||
Success bool `protobuf:"varint,1,opt,name=success" json:"success,omitempty"`
|
||||
// the amount of items affected
|
||||
Count uint64 `protobuf:"varint,2,opt,name=count" json:"count,omitempty"`
|
||||
// error message on failure
|
||||
Msg string `protobuf:"bytes,3,opt,name=msg" json:"msg,omitempty"`
|
||||
}
|
||||
|
||||
func (m *Response) Reset() { *m = Response{} }
|
||||
func (m *Response) String() string { return proto.CompactTextString(m) }
|
||||
func (*Response) ProtoMessage() {}
|
||||
func (*Response) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
|
||||
|
||||
func (m *Response) GetSuccess() bool {
|
||||
if m != nil {
|
||||
return m.Success
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (m *Response) GetCount() uint64 {
|
||||
if m != nil {
|
||||
return m.Count
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Response) GetMsg() string {
|
||||
if m != nil {
|
||||
return m.Msg
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
type Item struct {
|
||||
// the id for this item
|
||||
Id uint64 `protobuf:"varint,1,opt,name=id" json:"id,omitempty"`
|
||||
// the arbitrary data for this item
|
||||
Data []byte `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
|
||||
// the queue for this item
|
||||
Queue string `protobuf:"bytes,3,opt,name=queue" json:"queue,omitempty"`
|
||||
// error queue to cycle items to
|
||||
ErrorQueue string `protobuf:"bytes,4,opt,name=errorQueue" json:"errorQueue,omitempty"`
|
||||
// error queue TTL in nanoseconds
|
||||
ErrorTTL int64 `protobuf:"fixed64,5,opt,name=errorTTL" json:"errorTTL,omitempty"`
|
||||
// the Unix time (in seconds) in which this item was created
|
||||
Ctime int64 `protobuf:"fixed64,6,opt,name=ctime" json:"ctime,omitempty"`
|
||||
// the Unix time (in seconds) in which this item was errored last
|
||||
Etime int64 `protobuf:"fixed64,7,opt,name=etime" json:"etime,omitempty"`
|
||||
// the amount of times this item was errored
|
||||
Ecount uint32 `protobuf:"varint,8,opt,name=ecount" json:"ecount,omitempty"`
|
||||
// arbitrary statistical sizes to record for this item
|
||||
Stats map[string]int64 `protobuf:"bytes,9,rep,name=stats" json:"stats,omitempty" protobuf_key:"bytes,1,opt,name=key" protobuf_val:"varint,2,opt,name=value"`
|
||||
}
|
||||
|
||||
func (m *Item) Reset() { *m = Item{} }
|
||||
func (m *Item) String() string { return proto.CompactTextString(m) }
|
||||
func (*Item) ProtoMessage() {}
|
||||
func (*Item) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
|
||||
|
||||
func (m *Item) GetId() uint64 {
|
||||
if m != nil {
|
||||
return m.Id
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Item) GetData() []byte {
|
||||
if m != nil {
|
||||
return m.Data
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Item) GetQueue() string {
|
||||
if m != nil {
|
||||
return m.Queue
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *Item) GetErrorQueue() string {
|
||||
if m != nil {
|
||||
return m.ErrorQueue
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *Item) GetErrorTTL() int64 {
|
||||
if m != nil {
|
||||
return m.ErrorTTL
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Item) GetCtime() int64 {
|
||||
if m != nil {
|
||||
return m.Ctime
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Item) GetEtime() int64 {
|
||||
if m != nil {
|
||||
return m.Etime
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Item) GetEcount() uint32 {
|
||||
if m != nil {
|
||||
return m.Ecount
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Item) GetStats() map[string]int64 {
|
||||
if m != nil {
|
||||
return m.Stats
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type GetInfo struct {
|
||||
Queue string `protobuf:"bytes,1,opt,name=queue" json:"queue,omitempty"`
|
||||
// the amount of items to try and pull
|
||||
Count uint64 `protobuf:"varint,2,opt,name=count" json:"count,omitempty"`
|
||||
TimeoutLease *TimeLease `protobuf:"bytes,3,opt,name=timeoutLease" json:"timeoutLease,omitempty"`
|
||||
PidLease *PidLease `protobuf:"bytes,4,opt,name=pidLease" json:"pidLease,omitempty"`
|
||||
HeartLease *HeartbeatLease `protobuf:"bytes,5,opt,name=heartLease" json:"heartLease,omitempty"`
|
||||
}
|
||||
|
||||
func (m *GetInfo) Reset() { *m = GetInfo{} }
|
||||
func (m *GetInfo) String() string { return proto.CompactTextString(m) }
|
||||
func (*GetInfo) ProtoMessage() {}
|
||||
func (*GetInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
|
||||
|
||||
func (m *GetInfo) GetQueue() string {
|
||||
if m != nil {
|
||||
return m.Queue
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *GetInfo) GetCount() uint64 {
|
||||
if m != nil {
|
||||
return m.Count
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *GetInfo) GetTimeoutLease() *TimeLease {
|
||||
if m != nil {
|
||||
return m.TimeoutLease
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *GetInfo) GetPidLease() *PidLease {
|
||||
if m != nil {
|
||||
return m.PidLease
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *GetInfo) GetHeartLease() *HeartbeatLease {
|
||||
if m != nil {
|
||||
return m.HeartLease
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type TimeLease struct {
|
||||
// TTL in nanoseconds to hold the lease
|
||||
Ttl int64 `protobuf:"fixed64,1,opt,name=ttl" json:"ttl,omitempty"`
|
||||
}
|
||||
|
||||
func (m *TimeLease) Reset() { *m = TimeLease{} }
|
||||
func (m *TimeLease) String() string { return proto.CompactTextString(m) }
|
||||
func (*TimeLease) ProtoMessage() {}
|
||||
func (*TimeLease) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
|
||||
|
||||
func (m *TimeLease) GetTtl() int64 {
|
||||
if m != nil {
|
||||
return m.Ttl
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type PidLease struct {
|
||||
Pid uint32 `protobuf:"varint,1,opt,name=pid" json:"pid,omitempty"`
|
||||
}
|
||||
|
||||
func (m *PidLease) Reset() { *m = PidLease{} }
|
||||
func (m *PidLease) String() string { return proto.CompactTextString(m) }
|
||||
func (*PidLease) ProtoMessage() {}
|
||||
func (*PidLease) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
|
||||
|
||||
func (m *PidLease) GetPid() uint32 {
|
||||
if m != nil {
|
||||
return m.Pid
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type HeartbeatLease struct {
|
||||
Id string `protobuf:"bytes,1,opt,name=id" json:"id,omitempty"`
|
||||
Ttl int64 `protobuf:"fixed64,2,opt,name=ttl" json:"ttl,omitempty"`
|
||||
}
|
||||
|
||||
func (m *HeartbeatLease) Reset() { *m = HeartbeatLease{} }
|
||||
func (m *HeartbeatLease) String() string { return proto.CompactTextString(m) }
|
||||
func (*HeartbeatLease) ProtoMessage() {}
|
||||
func (*HeartbeatLease) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} }
|
||||
|
||||
func (m *HeartbeatLease) GetId() string {
|
||||
if m != nil {
|
||||
return m.Id
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *HeartbeatLease) GetTtl() int64 {
|
||||
if m != nil {
|
||||
return m.Ttl
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type DelInfo struct {
|
||||
Queue string `protobuf:"bytes,1,opt,name=queue" json:"queue,omitempty"`
|
||||
Ids []uint64 `protobuf:"varint,2,rep,packed,name=ids" json:"ids,omitempty"`
|
||||
}
|
||||
|
||||
func (m *DelInfo) Reset() { *m = DelInfo{} }
|
||||
func (m *DelInfo) String() string { return proto.CompactTextString(m) }
|
||||
func (*DelInfo) ProtoMessage() {}
|
||||
func (*DelInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} }
|
||||
|
||||
func (m *DelInfo) GetQueue() string {
|
||||
if m != nil {
|
||||
return m.Queue
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *DelInfo) GetIds() []uint64 {
|
||||
if m != nil {
|
||||
return m.Ids
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type ErrInfo struct {
|
||||
Queue string `protobuf:"bytes,1,opt,name=queue" json:"queue,omitempty"`
|
||||
Ids []uint64 `protobuf:"varint,2,rep,packed,name=ids" json:"ids,omitempty"`
|
||||
}
|
||||
|
||||
func (m *ErrInfo) Reset() { *m = ErrInfo{} }
|
||||
func (m *ErrInfo) String() string { return proto.CompactTextString(m) }
|
||||
func (*ErrInfo) ProtoMessage() {}
|
||||
func (*ErrInfo) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} }
|
||||
|
||||
func (m *ErrInfo) GetQueue() string {
|
||||
if m != nil {
|
||||
return m.Queue
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *ErrInfo) GetIds() []uint64 {
|
||||
if m != nil {
|
||||
return m.Ids
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterType((*Response)(nil), "shepard.Response")
|
||||
proto.RegisterType((*Item)(nil), "shepard.Item")
|
||||
proto.RegisterType((*GetInfo)(nil), "shepard.GetInfo")
|
||||
proto.RegisterType((*TimeLease)(nil), "shepard.TimeLease")
|
||||
proto.RegisterType((*PidLease)(nil), "shepard.PidLease")
|
||||
proto.RegisterType((*HeartbeatLease)(nil), "shepard.HeartbeatLease")
|
||||
proto.RegisterType((*DelInfo)(nil), "shepard.DelInfo")
|
||||
proto.RegisterType((*ErrInfo)(nil), "shepard.ErrInfo")
|
||||
}
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
var _ context.Context
|
||||
var _ grpc.ClientConn
|
||||
|
||||
// This is a compile-time assertion to ensure that this generated file
|
||||
// is compatible with the grpc package it is being compiled against.
|
||||
const _ = grpc.SupportPackageIsVersion4
|
||||
|
||||
// Client API for Sheepmq service
|
||||
|
||||
type SheepmqClient interface {
|
||||
// Add the given items to the queue
|
||||
AddItem(ctx context.Context, opts ...grpc.CallOption) (Sheepmq_AddItemClient, error)
|
||||
// Get the given items per the info provided
|
||||
GetItem(ctx context.Context, in *GetInfo, opts ...grpc.CallOption) (Sheepmq_GetItemClient, error)
|
||||
// Delete the given items if possible
|
||||
DelItem(ctx context.Context, in *DelInfo, opts ...grpc.CallOption) (*Response, error)
|
||||
// Error the given items if possible
|
||||
ErrItem(ctx context.Context, in *ErrInfo, opts ...grpc.CallOption) (*Response, error)
|
||||
}
|
||||
|
||||
type sheepmqClient struct {
|
||||
cc *grpc.ClientConn
|
||||
}
|
||||
|
||||
func NewSheepmqClient(cc *grpc.ClientConn) SheepmqClient {
|
||||
return &sheepmqClient{cc}
|
||||
}
|
||||
|
||||
func (c *sheepmqClient) AddItem(ctx context.Context, opts ...grpc.CallOption) (Sheepmq_AddItemClient, error) {
|
||||
stream, err := grpc.NewClientStream(ctx, &_Sheepmq_serviceDesc.Streams[0], c.cc, "/shepard.sheepmq/AddItem", opts...)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
x := &sheepmqAddItemClient{stream}
|
||||
return x, nil
|
||||
}
|
||||
|
||||
type Sheepmq_AddItemClient interface {
|
||||
Send(*Item) error
|
||||
Recv() (*Response, error)
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
type sheepmqAddItemClient struct {
|
||||
grpc.ClientStream
|
||||
}
|
||||
|
||||
func (x *sheepmqAddItemClient) Send(m *Item) error {
|
||||
return x.ClientStream.SendMsg(m)
|
||||
}
|
||||
|
||||
func (x *sheepmqAddItemClient) Recv() (*Response, error) {
|
||||
m := new(Response)
|
||||