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add Live/Ready/Health methods

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Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
Василий Толстов
2024-12-02 13:20:13 +03:00
parent ae97023092
commit 36b7b9f5fb
24 changed files with 249 additions and 400 deletions
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40
util/io/io.go
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@@ -1,40 +0,0 @@
// Package io is for io management
package io
import (
"io"
"go.unistack.org/micro/v3/network/transport"
)
type rwc struct {
socket transport.Socket
}
func (r *rwc) Read(p []byte) (n int, err error) {
m := new(transport.Message)
if err := r.socket.Recv(m); err != nil {
return 0, err
}
copy(p, m.Body)
return len(m.Body), nil
}
func (r *rwc) Write(p []byte) (n int, err error) {
err = r.socket.Send(&transport.Message{
Body: p,
})
if err != nil {
return 0, err
}
return len(p), nil
}
func (r *rwc) Close() error {
return r.socket.Close()
}
// NewRWC returns a new ReadWriteCloser
func NewRWC(sock transport.Socket) io.ReadWriteCloser {
return &rwc{sock}
}

118
util/pool/default.go
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@@ -1,118 +0,0 @@
package pool
import (
"context"
"sync"
"time"
"go.unistack.org/micro/v3/network/transport"
"go.unistack.org/micro/v3/util/id"
)
type pool struct {
tr transport.Transport
conns map[string][]*poolConn
size int
ttl time.Duration
sync.Mutex
}
type poolConn struct {
created time.Time
transport.Client
id string
}
func newPool(options Options) *pool {
return &pool{
size: options.Size,
tr: options.Transport,
ttl: options.TTL,
conns: make(map[string][]*poolConn),
}
}
func (p *pool) Close() error {
p.Lock()
for k, c := range p.conns {
for _, conn := range c {
conn.Client.Close()
}
delete(p.conns, k)
}
p.Unlock()
return nil
}
// NoOp the Close since we manage it
func (p *poolConn) Close() error {
return nil
}
func (p *poolConn) ID() string {
return p.id
}
func (p *poolConn) Created() time.Time {
return p.created
}
func (p *pool) Get(ctx context.Context, addr string, opts ...transport.DialOption) (Conn, error) {
p.Lock()
conns := p.conns[addr]
// while we have conns check age and then return one
// otherwise we'll create a new conn
for len(conns) > 0 {
conn := conns[len(conns)-1]
conns = conns[:len(conns)-1]
p.conns[addr] = conns
// if conn is old kill it and move on
if d := time.Since(conn.Created()); d > p.ttl {
conn.Client.Close()
continue
}
// we got a good conn, lets unlock and return it
p.Unlock()
return conn, nil
}
p.Unlock()
// create new conn
c, err := p.tr.Dial(ctx, addr, opts...)
if err != nil {
return nil, err
}
id, err := id.New()
if err != nil {
return nil, err
}
return &poolConn{
Client: c,
id: id,
created: time.Now(),
}, nil
}
func (p *pool) Release(conn Conn, err error) error {
// don't store the conn if it has errored
if err != nil {
return conn.(*poolConn).Client.Close()
}
// otherwise put it back for reuse
p.Lock()
conns := p.conns[conn.Remote()]
if len(conns) >= p.size {
p.Unlock()
return conn.(*poolConn).Client.Close()
}
p.conns[conn.Remote()] = append(conns, conn.(*poolConn))
p.Unlock()
return nil
}

92
util/pool/default_test.go
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@@ -1,92 +0,0 @@
//go:build ignore
// +build ignore
package pool
import (
"testing"
"time"
"go.unistack.org/micro/v3/network/transport"
"go.unistack.org/micro/v3/network/transport/memory"
)
func testPool(t *testing.T, size int, ttl time.Duration) {
// mock transport
tr := memory.NewTransport()
options := Options{
TTL: ttl,
Size: size,
Transport: tr,
}
// zero pool
p := newPool(options)
// listen
l, err := tr.Listen(":0")
if err != nil {
t.Fatal(err)
}
defer l.Close()
// accept loop
go func() {
for {
if err := l.Accept(func(s transport.Socket) {
for {
var msg transport.Message
if err := s.Recv(&msg); err != nil {
return
}
if err := s.Send(&msg); err != nil {
return
}
}
}); err != nil {
return
}
}
}()
for i := 0; i < 10; i++ {
// get a conn
c, err := p.Get(l.Addr())
if err != nil {
t.Fatal(err)
}
msg := &transport.Message{
Body: []byte(`hello world`),
}
if err := c.Send(msg); err != nil {
t.Fatal(err)
}
var rcv transport.Message
if err := c.Recv(&rcv); err != nil {
t.Fatal(err)
}
if string(rcv.Body) != string(msg.Body) {
t.Fatalf("got %v, expected %v", rcv.Body, msg.Body)
}
// release the conn
p.Release(c, nil)
p.Lock()
if i := len(p.conns[l.Addr()]); i > size {
p.Unlock()
t.Fatalf("pool size %d is greater than expected %d", i, size)
}
p.Unlock()
}
}
func TestClientPool(t *testing.T) {
testPool(t, 0, time.Minute)
testPool(t, 2, time.Minute)
}

38
util/pool/options.go
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@@ -1,38 +0,0 @@
package pool
import (
"time"
"go.unistack.org/micro/v3/network/transport"
)
// Options struct
type Options struct {
Transport transport.Transport
TTL time.Duration
Size int
}
// Option func signature
type Option func(*Options)
// Size sets the size
func Size(i int) Option {
return func(o *Options) {
o.Size = i
}
}
// Transport sets the transport
func Transport(t transport.Transport) Option {
return func(o *Options) {
o.Transport = t
}
}
// TTL specifies ttl
func TTL(t time.Duration) Option {
return func(o *Options) {
o.TTL = t
}
}

38
util/pool/pool.go
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@@ -1,38 +0,0 @@
// Package pool is a connection pool
package pool
import (
"context"
"time"
"go.unistack.org/micro/v3/network/transport"
)
// Pool is an interface for connection pooling
type Pool interface {
// Close the pool
Close() error
// Get a connection
Get(ctx context.Context, addr string, opts ...transport.DialOption) (Conn, error)
// Release the connection
Release(c Conn, status error) error
}
// Conn conn pool interface
type Conn interface {
// unique id of connection
ID() string
// time it was created
Created() time.Time
// embedded connection
transport.Client
}
// NewPool creates new connection pool
func NewPool(opts ...Option) Pool {
options := Options{}
for _, o := range opts {
o(&options)
}
return newPool(options)
}

6
util/time/duration_test.go
View File

@@ -23,7 +23,7 @@ func TestMarshalYAML(t *testing.T) {
func TestUnmarshalYAML(t *testing.T) {
type str struct {
TTL Duration `yaml:"ttl"`
TTL *Duration `yaml:"ttl"`
}
v := &str{}
var err error
@@ -31,14 +31,14 @@ func TestUnmarshalYAML(t *testing.T) {
err = yaml.Unmarshal([]byte(`{"ttl":"10ms"}`), v)
if err != nil {
t.Fatal(err)
} else if v.TTL != 10000000 {
} else if *(v.TTL) != 10000000 {
t.Fatalf("invalid duration %v != 10000000", v.TTL)
}
err = yaml.Unmarshal([]byte(`{"ttl":"1y"}`), v)
if err != nil {
t.Fatal(err)
} else if v.TTL != 31622400000000000 {
} else if *(v.TTL) != 31622400000000000 {
t.Fatalf("invalid duration %v != 31622400000000000", v.TTL)
}
}