redis

package
v1.64.0 Latest Latest
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 Go to latest Published: May 8, 2020 License: MIT Imports: 12 Imported by: 0

Documentation

Overview

Package redis is an abstraction layer to access Redis with repositories and models.

Index

Constants

This section is empty.

Variables

View Source 
var (
	// ErrNoSuchEntity is returned from a Get operation when there is not a model
	// that matches the query
	ErrNoSuchEntity = errors.New("no such entity")

	ErrDone = errors.New("done")
)

Functions

func Mask added in v1.1.0 

func Mask(cols ...string) []string

Types

type BooleanKV 

type BooleanKV struct {
	// contains filtered or unexported fields
}

func (*BooleanKV) Delete 

func (kv *BooleanKV) Delete(ctx context.Context) error

func (*BooleanKV) Exists 

func (kv *BooleanKV) Exists(ctx context.Context) (bool, error)

func (*BooleanKV) Get 

func (kv *BooleanKV) Get(ctx context.Context) (bool, error)

func (*BooleanKV) Set 

func (kv *BooleanKV) Set(ctx context.Context, value bool) error

func (*BooleanKV) SetTTL 

func (kv *BooleanKV) SetTTL(ctx context.Context, value bool, ttl time.Duration) error

type Counter 

type Counter struct {
	// contains filtered or unexported fields
}

func (*Counter) Decrement 

func (c *Counter) Decrement(ctx context.Context) (int64, error)

func (*Counter) Get 

func (c *Counter) Get(ctx context.Context) (int64, error)

func (*Counter) Increment 

func (c *Counter) Increment(ctx context.Context) (int64, error)

func (*Counter) IncrementBy 

func (c *Counter) IncrementBy(ctx context.Context, value int64) (int64, error)

func (*Counter) Set 

func (c *Counter) Set(ctx context.Context, value int64) error

type Counters 

type Counters struct {
	// contains filtered or unexported fields
}

func (*Counters) Key 

func (counters *Counters) Key(key string) *Counter

type Database 

type Database struct {
	// contains filtered or unexported fields
}

Database keeps a connection to a Redis server.

func Open 

func Open(hostname, applicationName string) *Database

Open a new database connection to the remote Redis server.

func (*Database) BooleanKV 

func (db *Database) BooleanKV(key string) *BooleanKV

func (*Database) Close added in v1.1.0 

func (db *Database) Close() error

Close the connection to the remote database.

func (*Database) Cmdable added in v1.40.0 

func (db *Database) Cmdable(ctx context.Context) redis.Cmdable

Cmdable returns a reference to the direct Redis database connection. If context is inside a transaction it will return the Tx object instead. Both objects has the same Cmdable interface of the third party library.

func (*Database) Counters 

func (db *Database) Counters(key string) *Counters

func (*Database) FlushAllKeysFromDatabase 

func (db *Database) FlushAllKeysFromDatabase() error

FlushAllKeysFromDatabase is exposed as a simple way for tests to reset the local database. It is not intended to be run in production. It will clean up all the keys of the whole database and leav an empty canvas to fill again.

func (*Database) Hash added in v1.1.0 

func (db *Database) Hash(name string, model Model) *Hash

Hash returns a hash instance that stores full models as individual hash keys.

func (*Database) Int32KV 

func (db *Database) Int32KV(key string) *Int32KV

func (*Database) Int64KV 

func (db *Database) Int64KV(key string) *Int64KV

func (*Database) Int64Set 

func (db *Database) Int64Set(key string) *Int64Set

func (*Database) ProtoHash 

func (db *Database) ProtoHash(key string) *ProtoHash

func (*Database) ProtoKV 

func (db *Database) ProtoKV(key string) *ProtoKV

func (*Database) ProtoList 

func (db *Database) ProtoList(key string) *ProtoList

func (*Database) PubSub 

func (db *Database) PubSub(name string) *PubSub

PubSub returns an entrypoint to a PubSub queue in redisIt can be used to publish and receive protobuf messages.

func (*Database) StringKV 

func (db *Database) StringKV(key string) *StringKV

func (*Database) StringsList 

func (db *Database) StringsList(key string) *StringsList

func (*Database) StringsSet 

func (db *Database) StringsSet(key string) *StringsSet

func (*Database) TimeKV 

func (db *Database) TimeKV(key string) *TimeKV

func (*Database) Transaction added in v1.40.0 

func (db *Database) Transaction(ctx context.Context, fn TransactionFn) error

Transaction runs fn inside a transaction. You have to use the new context for every operation, otherwise they won't be transactional.

type Hash added in v1.1.0 

type Hash struct {
	// contains filtered or unexported fields
}

func (*Hash) Delete added in v1.2.0 

func (hash *Hash) Delete(ctx context.Context, key string) error

Delete inmediately removes the key from the hash.

func (*Hash) ExpireAt added in v1.3.0 

func (hash *Hash) ExpireAt(ctx context.Context, key string, t time.Time) error

ExpireAt sets the expiration of a key of this hash.

func (*Hash) Get added in v1.1.0 

func (hash *Hash) Get(ctx context.Context, key string, instance Model, masks ...MaskOpt) error

func (*Hash) Put added in v1.1.0 

func (hash *Hash) Put(ctx context.Context, key string, instance Model, masks ...MaskOpt) error

type Int32KV 

type Int32KV struct {
	// contains filtered or unexported fields
}

func (*Int32KV) Delete 

func (kv *Int32KV) Delete(ctx context.Context) error

func (*Int32KV) Exists 

func (kv *Int32KV) Exists(ctx context.Context) (bool, error)

func (*Int32KV) Get 

func (kv *Int32KV) Get(ctx context.Context) (int32, error)

func (*Int32KV) Set 

func (kv *Int32KV) Set(ctx context.Context, value int32) error

func (*Int32KV) SetTTL 

func (kv *Int32KV) SetTTL(ctx context.Context, value int32, ttl time.Duration) error

type Int64KV 

type Int64KV struct {
	// contains filtered or unexported fields
}

func (*Int64KV) Delete 

func (kv *Int64KV) Delete(ctx context.Context) error

func (*Int64KV) Exists 

func (kv *Int64KV) Exists(ctx context.Context) (bool, error)

func (*Int64KV) Get 

func (kv *Int64KV) Get(ctx context.Context) (int64, error)

func (*Int64KV) Set 

func (kv *Int64KV) Set(ctx context.Context, value int64) error

func (*Int64KV) SetTTL 

func (kv *Int64KV) SetTTL(ctx context.Context, value int64, ttl time.Duration) error

type Int64Set 

type Int64Set struct {
	// contains filtered or unexported fields
}

func (*Int64Set) Add 

func (set *Int64Set) Add(ctx context.Context, values ...int64) error

func (*Int64Set) Contains added in v1.29.0 

func (set *Int64Set) Contains(ctx context.Context, value int64) (bool, error)

func (*Int64Set) Len 

func (set *Int64Set) Len(ctx context.Context) (int64, error)

func (*Int64Set) Members 

func (set *Int64Set) Members(ctx context.Context) ([]int64, error)

func (*Int64Set) Remove 

func (set *Int64Set) Remove(ctx context.Context, values ...int64) error

type MaskOpt added in v1.1.0 

type MaskOpt []string

type Model added in v1.1.0 

type Model interface {
	// IsRedisModel should always return true.
	IsRedisModel() bool
}

Model should be implemented by any model that want to be serializable to redis keys.

type MultiError 

type MultiError []error

MultiError is returned from batch operations with the error of each operation. If a batch operation does not fails this will be nil too.

func (MultiError) Error 

func (merr MultiError) Error() string

Error returns the composed error message with all the individual ones.

func (MultiError) HasError 

func (merr MultiError) HasError() bool

HasError checks if there is really an error on the list or all of them are empty.

type ProtoHash 

type ProtoHash struct {
	// contains filtered or unexported fields
}

func (*ProtoHash) Delete 

func (hash *ProtoHash) Delete(ctx context.Context, key string) error

func (*ProtoHash) Get 

func (hash *ProtoHash) Get(ctx context.Context, key string, model proto.Message) error

func (*ProtoHash) GetMulti 

func (hash *ProtoHash) GetMulti(ctx context.Context, keys []string, result interface{}) error

GetMulti fetchs a list of keys from the hash. Result should be a slice of proto.Message that will be filled with the results in the same order as the keys.

func (*ProtoHash) PrepareInsert 

func (hash *ProtoHash) PrepareInsert() *ProtoHashInsert

type ProtoHashInsert 

type ProtoHashInsert struct {
	// contains filtered or unexported fields
}

func (*ProtoHashInsert) Commit 

func (insert *ProtoHashInsert) Commit(ctx context.Context) error

func (*ProtoHashInsert) Set 

func (insert *ProtoHashInsert) Set(ctx context.Context, key string, value proto.Message) error

type ProtoKV 

type ProtoKV struct {
	// contains filtered or unexported fields
}

ProtoKV interacts with a protobuf value key.

func (*ProtoKV) Delete 

func (kv *ProtoKV) Delete(ctx context.Context) error

Delete the key.

func (*ProtoKV) Exists 

func (kv *ProtoKV) Exists(ctx context.Context) (bool, error)

Exists checks if the key exists previously.

func (*ProtoKV) Get 

func (kv *ProtoKV) Get(ctx context.Context, value proto.Message) error

Get decodes the value in the provided message.

func (*ProtoKV) Set 

func (kv *ProtoKV) Set(ctx context.Context, value proto.Message) error

Set changes the value of the key.

func (*ProtoKV) SetTTL 

func (kv *ProtoKV) SetTTL(ctx context.Context, value proto.Message, ttl time.Duration) error

SetTTL changes the value of the key with a Time-To-Live.

type ProtoList 

type ProtoList struct {
	// contains filtered or unexported fields
}

func (*ProtoList) Add 

func (list *ProtoList) Add(ctx context.Context, values ...proto.Message) error

func (*ProtoList) GetAll 

func (list *ProtoList) GetAll(ctx context.Context, result interface{}) error

func (*ProtoList) GetRange 

func (list *ProtoList) GetRange(ctx context.Context, start, end int64, result interface{}) error

func (*ProtoList) Len 

func (list *ProtoList) Len(ctx context.Context) (int64, error)

func (*ProtoList) Remove 

func (list *ProtoList) Remove(ctx context.Context, value proto.Message) error

type PubSub 

type PubSub struct {
	// contains filtered or unexported fields
}

PubSub represents a connection to a redis PubSub. It can be used to publish and receive protobuf messages.

func (*PubSub) Publish 

func (pubsub *PubSub) Publish(ctx context.Context, msg proto.Message) error

Publish sends a new message to the server. Only subscription connected at the same time will receive the message.

func (*PubSub) Subscribe 

func (pubsub *PubSub) Subscribe(ctx context.Context) *PubSubSubscription

Subscribe opens a new connection to the server and starts downloading messages.

type PubSubSubscription 

type PubSubSubscription struct {
	// contains filtered or unexported fields
}

PubSubSubscription stores the state of an active connection to the server.

func (*PubSubSubscription) Close 

func (sub *PubSubSubscription) Close()

Close exits the connection.

func (*PubSubSubscription) Next 

func (sub *PubSubSubscription) Next(dest proto.Message) error

Next waits for the next message and decodes it in the destination.

type StringKV 

type StringKV struct {
	// contains filtered or unexported fields
}

func (*StringKV) Delete 

func (kv *StringKV) Delete(ctx context.Context) error

func (*StringKV) Exists 

func (kv *StringKV) Exists(ctx context.Context) (bool, error)

func (*StringKV) Get 

func (kv *StringKV) Get(ctx context.Context) (string, error)

func (*StringKV) Set 

func (kv *StringKV) Set(ctx context.Context, value string) error

func (*StringKV) SetTTL 

func (kv *StringKV) SetTTL(ctx context.Context, value string, ttl time.Duration) error

type StringsList 

type StringsList struct {
	// contains filtered or unexported fields
}

func (*StringsList) Add 

func (list *StringsList) Add(ctx context.Context, values []string) error

func (*StringsList) GetAll 

func (list *StringsList) GetAll(ctx context.Context) ([]string, error)

func (*StringsList) GetRange 

func (list *StringsList) GetRange(ctx context.Context, start, end int64) ([]string, error)

func (*StringsList) Len 

func (list *StringsList) Len(ctx context.Context) (int64, error)

func (*StringsList) Remove 

func (list *StringsList) Remove(ctx context.Context, value string) error

type StringsSet 

type StringsSet struct {
	// contains filtered or unexported fields
}

func (*StringsSet) Add 

func (set *StringsSet) Add(ctx context.Context, values ...string) error

func (*StringsSet) Contains added in v1.29.0 

func (set *StringsSet) Contains(ctx context.Context, value string) (bool, error)

func (*StringsSet) Len 

func (set *StringsSet) Len(ctx context.Context) (int64, error)

func (*StringsSet) Members 

func (set *StringsSet) Members(ctx context.Context) ([]string, error)

func (*StringsSet) Remove 

func (set *StringsSet) Remove(ctx context.Context, values ...string) error

func (*StringsSet) SortAlpha 

func (set *StringsSet) SortAlpha(ctx context.Context) ([]string, error)

type TimeKV 

type TimeKV struct {
	// contains filtered or unexported fields
}

func (*TimeKV) Delete 

func (kv *TimeKV) Delete(ctx context.Context) error

func (*TimeKV) Exists 

func (kv *TimeKV) Exists(ctx context.Context) (bool, error)

func (*TimeKV) Get 

func (kv *TimeKV) Get(ctx context.Context) (time.Time, error)

func (*TimeKV) Set 

func (kv *TimeKV) Set(ctx context.Context, value time.Time) error

func (*TimeKV) SetTTL 

func (kv *TimeKV) SetTTL(ctx context.Context, value time.Time, ttl time.Duration) error

type TransactionFn added in v1.40.0 

type TransactionFn func(ctx context.Context) error

TransactionFn is a callback for transactions.

Source Files

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