Rewrite the store interface (#1335)
* WIP store rewrite * Fix memory store tests * Store hard expiry times rather than duration! * Clarify memory test * Add limit to store interface * Implement suffix option * Don't return nils from noop store * Fix syncmap * Start fixing store service * wip service and cache * Use _ for special characters in cockroachdb namespace * Improve cockroach namespace comment * Use service name as default store namespace * Fixes * Implement Store Scope * Start fixing etcd * implement read and write with expiry and prefix * Fix etcd tests * Fix cockroach store * Fix cloudflare interface * Fix certmagic / cloudflare store * comment lint * cache isn't implemented yet * Only prepare DB staements once Co-authored-by: Ben Toogood <ben@micro.mu> Co-authored-by: ben-toogood <bentoogood@gmail.com>
This commit is contained in:
Jake Sanders
GitHub
@@ -2,154 +2,255 @@
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package memory
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import (
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"sort"
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"strings"
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"sync"
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"time"
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"github.com/micro/go-micro/v2/store"
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"github.com/patrickmn/go-cache"
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"github.com/pkg/errors"
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)
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// NewStore returns a memory store
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func NewStore(opts ...store.Option) store.Store {
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s := &memoryStore{
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options: store.Options{},
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store: cache.New(cache.NoExpiration, 5*time.Minute),
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}
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for _, o := range opts {
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o(&s.options)
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}
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return s
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}
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type memoryStore struct {
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options store.Options
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sync.RWMutex
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values map[string]*memoryRecord
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}
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type memoryRecord struct {
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r *store.Record
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c time.Time
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store *cache.Cache
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}
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func (m *memoryStore) Init(opts ...store.Option) error {
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m.store.Flush()
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for _, o := range opts {
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o(&m.options)
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}
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return nil
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}
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func (m *memoryStore) List() ([]*store.Record, error) {
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m.RLock()
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defer m.RUnlock()
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//nolint:prealloc
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var values []*store.Record
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for _, v := range m.values {
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// get expiry
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d := v.r.Expiry
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t := time.Since(v.c)
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if d > time.Duration(0) {
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// expired
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if t > d {
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continue
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}
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// update expiry
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v.r.Expiry -= t
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v.c = time.Now()
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}
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values = append(values, v.r)
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}
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return values, nil
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}
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func (m *memoryStore) Read(key string, opts ...store.ReadOption) ([]*store.Record, error) {
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m.RLock()
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defer m.RUnlock()
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var options store.ReadOptions
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for _, o := range opts {
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o(&options)
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}
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var vals []*memoryRecord
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if options.Prefix {
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for _, v := range m.values {
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if !strings.HasPrefix(v.r.Key, key) {
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continue
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}
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vals = append(vals, v)
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}
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} else if options.Suffix {
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for _, v := range m.values {
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if !strings.HasSuffix(v.r.Key, key) {
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continue
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}
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vals = append(vals, v)
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}
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} else {
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v, ok := m.values[key]
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if !ok {
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return nil, store.ErrNotFound
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}
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vals = []*memoryRecord{v}
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}
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//nolint:prealloc
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var records []*store.Record
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for _, v := range vals {
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// get expiry
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d := v.r.Expiry
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t := time.Since(v.c)
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// expired
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if d > time.Duration(0) {
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if t > d {
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return nil, store.ErrNotFound
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}
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// update expiry
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v.r.Expiry -= t
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v.c = time.Now()
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}
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records = append(records, v.r)
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}
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return records, nil
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}
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func (m *memoryStore) Write(r *store.Record) error {
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m.Lock()
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defer m.Unlock()
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// set the record
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m.values[r.Key] = &memoryRecord{
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r: r,
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c: time.Now(),
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}
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return nil
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}
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func (m *memoryStore) Delete(key string) error {
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m.Lock()
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defer m.Unlock()
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// delete the value
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delete(m.values, key)
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return nil
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}
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func (m *memoryStore) String() string {
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return "memory"
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}
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// NewStore returns a new store.Store
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func NewStore(opts ...store.Option) store.Store {
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var options store.Options
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func (m *memoryStore) Read(key string, opts ...store.ReadOption) ([]*store.Record, error) {
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readOpts := store.ReadOptions{}
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for _, o := range opts {
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o(&options)
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o(&readOpts)
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}
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return &memoryStore{
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options: options,
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values: make(map[string]*memoryRecord),
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var keys []string
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// Handle Prefix / suffix
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if readOpts.Prefix || readOpts.Suffix {
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var opts []store.ListOption
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if readOpts.Prefix {
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opts = append(opts, store.ListPrefix(key))
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}
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if readOpts.Suffix {
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opts = append(opts, store.ListSuffix(key))
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}
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opts = append(opts, store.ListLimit(readOpts.Limit))
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opts = append(opts, store.ListOffset(readOpts.Offset))
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k, err := m.List(opts...)
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if err != nil {
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return nil, errors.Wrap(err, "Memory: Read couldn't List()")
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}
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keys = k
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} else {
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keys = []string{key}
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}
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var results []*store.Record
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for _, k := range keys {
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r, err := m.get(k)
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if err != nil {
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return results, err
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}
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results = append(results, r)
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}
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return results, nil
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}
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func (m *memoryStore) get(k string) (*store.Record, error) {
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if len(m.options.Suffix) > 0 {
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k = k + m.options.Suffix
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}
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if len(m.options.Prefix) > 0 {
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k = m.options.Prefix + "/" + k
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}
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if len(m.options.Namespace) > 0 {
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k = m.options.Namespace + "/" + k
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}
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var storedRecord *internalRecord
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r, found := m.store.Get(k)
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if !found {
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return nil, store.ErrNotFound
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}
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storedRecord, ok := r.(*internalRecord)
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if !ok {
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return nil, errors.New("Retrieved a non *internalRecord from the cache")
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}
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// Copy the record on the way out
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newRecord := &store.Record{}
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newRecord.Key = storedRecord.key
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newRecord.Value = make([]byte, len(storedRecord.value))
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copy(newRecord.Value, storedRecord.value)
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newRecord.Expiry = time.Until(storedRecord.expiresAt)
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return newRecord, nil
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}
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func (m *memoryStore) Write(r *store.Record, opts ...store.WriteOption) error {
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writeOpts := store.WriteOptions{}
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for _, o := range opts {
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o(&writeOpts)
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}
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if len(opts) > 0 {
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// Copy the record before applying options, or the incoming record will be mutated
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newRecord := store.Record{}
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newRecord.Key = r.Key
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newRecord.Value = make([]byte, len(r.Value))
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copy(newRecord.Value, r.Value)
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newRecord.Expiry = r.Expiry
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if !writeOpts.Expiry.IsZero() {
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newRecord.Expiry = time.Until(writeOpts.Expiry)
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}
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if writeOpts.TTL != 0 {
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newRecord.Expiry = writeOpts.TTL
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}
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m.set(&newRecord)
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} else {
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m.set(r)
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}
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return nil
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}
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func (m *memoryStore) set(r *store.Record) {
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key := r.Key
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if len(m.options.Suffix) > 0 {
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key = key + m.options.Suffix
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}
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if len(m.options.Prefix) > 0 {
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key = m.options.Prefix + "/" + key
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}
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if len(m.options.Namespace) > 0 {
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key = m.options.Namespace + "/" + key
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}
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// copy the incoming record and then
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// convert the expiry in to a hard timestamp
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i := &internalRecord{}
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i.key = r.Key
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i.value = make([]byte, len(r.Value))
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copy(i.value, r.Value)
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if r.Expiry != 0 {
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i.expiresAt = time.Now().Add(r.Expiry)
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}
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m.store.Set(key, i, r.Expiry)
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}
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func (m *memoryStore) Delete(key string, opts ...store.DeleteOption) error {
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deleteOptions := store.DeleteOptions{}
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for _, o := range opts {
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o(&deleteOptions)
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}
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m.delete(key)
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return nil
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}
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func (m *memoryStore) delete(key string) {
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if len(m.options.Suffix) > 0 {
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key = key + m.options.Suffix
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}
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if len(m.options.Prefix) > 0 {
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key = m.options.Prefix + "/" + key
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}
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if len(m.options.Namespace) > 0 {
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key = m.options.Namespace + "/" + key
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}
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m.store.Delete(key)
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}
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func (m *memoryStore) Options() store.Options {
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return m.options
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}
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func (m *memoryStore) List(opts ...store.ListOption) ([]string, error) {
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listOptions := store.ListOptions{}
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for _, o := range opts {
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o(&listOptions)
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}
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allKeys := m.list(listOptions.Limit, listOptions.Offset)
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if len(listOptions.Prefix) > 0 {
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var prefixKeys []string
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for _, k := range allKeys {
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if strings.HasPrefix(k, listOptions.Prefix) {
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prefixKeys = append(prefixKeys, k)
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}
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}
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allKeys = prefixKeys
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}
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if len(listOptions.Suffix) > 0 {
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var suffixKeys []string
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for _, k := range allKeys {
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if strings.HasSuffix(k, listOptions.Suffix) {
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suffixKeys = append(suffixKeys, k)
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}
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}
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allKeys = suffixKeys
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}
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return allKeys, nil
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}
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func (m *memoryStore) list(limit, offset uint) []string {
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allItems := m.store.Items()
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allKeys := make([]string, len(allItems))
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i := 0
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for k := range allItems {
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if len(m.options.Suffix) > 0 {
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k = strings.TrimSuffix(k, m.options.Suffix)
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}
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if len(m.options.Namespace) > 0 {
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k = strings.TrimPrefix(k, m.options.Namespace+"/")
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}
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if len(m.options.Prefix) > 0 {
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k = strings.TrimPrefix(k, m.options.Prefix+"/")
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}
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allKeys[i] = k
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i++
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}
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if limit != 0 || offset != 0 {
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sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
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min := func(i, j uint) uint {
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if i < j {
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return i
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}
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return j
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}
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return allKeys[offset:min(limit, uint(len(allKeys)))]
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}
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return allKeys
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}
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type internalRecord struct {
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key string
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value []byte
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expiresAt time.Time
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}
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@@ -1,37 +1,265 @@
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package memory
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import (
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"fmt"
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"testing"
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"time"
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"github.com/kr/pretty"
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"github.com/micro/go-micro/v2/store"
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)
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func TestReadRecordExpire(t *testing.T) {
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s := NewStore()
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var (
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key = "foo"
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expire = 100 * time.Millisecond
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)
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rec := &store.Record{
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Key: key,
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Value: nil,
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Expiry: expire,
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}
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s.Write(rec)
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|
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rrec, err := s.Read(key)
|
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if err != nil {
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t.Fatal(err)
|
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}
|
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if rrec[0].Expiry >= expire {
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t.Fatal("expiry of read record is not changed")
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}
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|
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time.Sleep(expire)
|
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|
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if _, err := s.Read(key); err != store.ErrNotFound {
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t.Fatal("expire elapsed, but key still accessable")
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func TestMemoryReInit(t *testing.T) {
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s := NewStore(store.Prefix("aaa"))
|
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s.Init(store.Prefix(""))
|
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if len(s.Options().Prefix) > 0 {
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t.Error("Init didn't reinitialise the store")
|
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}
|
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}
|
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|
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func TestMemoryBasic(t *testing.T) {
|
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s := NewStore()
|
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s.Init()
|
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basictest(s, t)
|
||||
}
|
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|
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func TestMemoryPrefix(t *testing.T) {
|
||||
s := NewStore()
|
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s.Init(store.Prefix("some-prefix"))
|
||||
basictest(s, t)
|
||||
}
|
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|
||||
func TestMemorySuffix(t *testing.T) {
|
||||
s := NewStore()
|
||||
s.Init(store.Suffix("some-suffix"))
|
||||
basictest(s, t)
|
||||
}
|
||||
|
||||
func TestMemoryPrefixSuffix(t *testing.T) {
|
||||
s := NewStore()
|
||||
s.Init(store.Prefix("some-prefix"), store.Prefix("some-suffix"))
|
||||
basictest(s, t)
|
||||
}
|
||||
|
||||
func TestMemoryNamespace(t *testing.T) {
|
||||
s := NewStore()
|
||||
s.Init(store.Namespace("some-namespace"))
|
||||
basictest(s, t)
|
||||
}
|
||||
|
||||
func TestMemoryNamespacePrefix(t *testing.T) {
|
||||
s := NewStore()
|
||||
s.Init(store.Prefix("some-prefix"), store.Namespace("some-namespace"))
|
||||
basictest(s, t)
|
||||
}
|
||||
|
||||
func basictest(s store.Store, t *testing.T) {
|
||||
t.Logf("Testing store %s, with options %# v\n", s.String(), pretty.Formatter(s.Options()))
|
||||
// Read and Write an expiring Record
|
||||
if err := s.Write(&store.Record{
|
||||
Key: "Hello",
|
||||
Value: []byte("World"),
|
||||
Expiry: time.Millisecond * 100,
|
||||
}); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
if r, err := s.Read("Hello"); err != nil {
|
||||
t.Error(err)
|
||||
} else {
|
||||
if len(r) != 1 {
|
||||
t.Error("Read returned multiple records")
|
||||
}
|
||||
if r[0].Key != "Hello" {
|
||||
t.Errorf("Expected %s, got %s", "Hello", r[0].Key)
|
||||
}
|
||||
if string(r[0].Value) != "World" {
|
||||
t.Errorf("Expected %s, got %s", "World", r[0].Value)
|
||||
}
|
||||
}
|
||||
time.Sleep(time.Millisecond * 200)
|
||||
if _, err := s.Read("Hello"); err != store.ErrNotFound {
|
||||
t.Errorf("Expected %# v, got %# v", store.ErrNotFound, err)
|
||||
}
|
||||
|
||||
// Write 3 records with various expiry and get with prefix
|
||||
records := []*store.Record{
|
||||
&store.Record{
|
||||
Key: "foo",
|
||||
Value: []byte("foofoo"),
|
||||
},
|
||||
&store.Record{
|
||||
Key: "foobar",
|
||||
Value: []byte("foobarfoobar"),
|
||||
Expiry: time.Millisecond * 100,
|
||||
},
|
||||
&store.Record{
|
||||
Key: "foobarbaz",
|
||||
Value: []byte("foobarbazfoobarbaz"),
|
||||
Expiry: 2 * time.Millisecond * 100,
|
||||
},
|
||||
}
|
||||
for _, r := range records {
|
||||
if err := s.Write(r); err != nil {
|
||||
t.Errorf("Couldn't write k: %s, v: %# v (%s)", r.Key, pretty.Formatter(r.Value), err)
|
||||
}
|
||||
}
|
||||
if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 3 {
|
||||
t.Errorf("Expected 3 items, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %v\n", pretty.Formatter(results))
|
||||
}
|
||||
time.Sleep(time.Millisecond * 100)
|
||||
if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 2 {
|
||||
t.Errorf("Expected 2 items, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %v\n", pretty.Formatter(results))
|
||||
}
|
||||
time.Sleep(time.Millisecond * 100)
|
||||
if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 1 {
|
||||
t.Errorf("Expected 1 item, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %# v\n", pretty.Formatter(results))
|
||||
}
|
||||
if err := s.Delete("foo", func(d *store.DeleteOptions) {}); err != nil {
|
||||
t.Errorf("Delete failed (%v)", err)
|
||||
}
|
||||
if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 0 {
|
||||
t.Errorf("Expected 0 items, got %d (%# v)", len(results), pretty.Formatter(results))
|
||||
}
|
||||
}
|
||||
|
||||
// Write 3 records with various expiry and get with Suffix
|
||||
records = []*store.Record{
|
||||
&store.Record{
|
||||
Key: "foo",
|
||||
Value: []byte("foofoo"),
|
||||
},
|
||||
&store.Record{
|
||||
Key: "barfoo",
|
||||
Value: []byte("barfoobarfoo"),
|
||||
Expiry: time.Millisecond * 100,
|
||||
},
|
||||
&store.Record{
|
||||
Key: "bazbarfoo",
|
||||
Value: []byte("bazbarfoobazbarfoo"),
|
||||
Expiry: 2 * time.Millisecond * 100,
|
||||
},
|
||||
}
|
||||
for _, r := range records {
|
||||
if err := s.Write(r); err != nil {
|
||||
t.Errorf("Couldn't write k: %s, v: %# v (%s)", r.Key, pretty.Formatter(r.Value), err)
|
||||
}
|
||||
}
|
||||
if results, err := s.Read("foo", store.ReadSuffix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 3 {
|
||||
t.Errorf("Expected 3 items, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %v\n", pretty.Formatter(results))
|
||||
}
|
||||
time.Sleep(time.Millisecond * 100)
|
||||
if results, err := s.Read("foo", store.ReadSuffix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 2 {
|
||||
t.Errorf("Expected 2 items, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %v\n", pretty.Formatter(results))
|
||||
}
|
||||
time.Sleep(time.Millisecond * 100)
|
||||
if results, err := s.Read("foo", store.ReadSuffix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 1 {
|
||||
t.Errorf("Expected 1 item, got %d", len(results))
|
||||
}
|
||||
t.Logf("Prefix test: %# v\n", pretty.Formatter(results))
|
||||
}
|
||||
if err := s.Delete("foo"); err != nil {
|
||||
t.Errorf("Delete failed (%v)", err)
|
||||
}
|
||||
if results, err := s.Read("foo", store.ReadSuffix()); err != nil {
|
||||
t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", pretty.Formatter(results), err)
|
||||
} else {
|
||||
if len(results) != 0 {
|
||||
t.Errorf("Expected 0 items, got %d (%# v)", len(results), pretty.Formatter(results))
|
||||
}
|
||||
}
|
||||
|
||||
// Test Prefix, Suffix and WriteOptions
|
||||
if err := s.Write(&store.Record{
|
||||
Key: "foofoobarbar",
|
||||
Value: []byte("something"),
|
||||
}, store.WriteTTL(time.Millisecond*100)); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
if err := s.Write(&store.Record{
|
||||
Key: "foofoo",
|
||||
Value: []byte("something"),
|
||||
}, store.WriteExpiry(time.Now().Add(time.Millisecond*100))); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
if err := s.Write(&store.Record{
|
||||
Key: "barbar",
|
||||
Value: []byte("something"),
|
||||
// TTL has higher precedence than expiry
|
||||
}, store.WriteExpiry(time.Now().Add(time.Hour)), store.WriteTTL(time.Millisecond*100)); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
if results, err := s.Read("foo", store.ReadPrefix(), store.ReadSuffix()); err != nil {
|
||||
t.Error(err)
|
||||
} else {
|
||||
if len(results) != 1 {
|
||||
t.Errorf("Expected 1 results, got %d: %# v", len(results), pretty.Formatter(results))
|
||||
}
|
||||
}
|
||||
time.Sleep(time.Millisecond * 100)
|
||||
if results, err := s.List(); err != nil {
|
||||
t.Errorf("List failed: %s", err)
|
||||
} else {
|
||||
if len(results) != 0 {
|
||||
t.Error("Expiry options were not effective")
|
||||
}
|
||||
}
|
||||
|
||||
s.Init()
|
||||
for i := 0; i < 10; i++ {
|
||||
s.Write(&store.Record{
|
||||
Key: fmt.Sprintf("a%d", i),
|
||||
Value: []byte{},
|
||||
})
|
||||
}
|
||||
if results, err := s.Read("a", store.ReadLimit(5), store.ReadPrefix()); err != nil {
|
||||
t.Error(err)
|
||||
} else {
|
||||
if len(results) != 5 {
|
||||
t.Error("Expected 5 results, got ", len(results))
|
||||
}
|
||||
if results[0].Key != "a0" {
|
||||
t.Errorf("Expected a0, got %s", results[0].Key)
|
||||
}
|
||||
if results[4].Key != "a4" {
|
||||
t.Errorf("Expected a4, got %s", results[4].Key)
|
||||
}
|
||||
}
|
||||
if results, err := s.Read("a", store.ReadLimit(30), store.ReadOffset(5), store.ReadPrefix()); err != nil {
|
||||
t.Error(err)
|
||||
} else {
|
||||
if len(results) != 5 {
|
||||
t.Error("Expected 5 results, got ", len(results))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user