utils

package
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 Go to latest Published: Nov 20, 2019 License: Apache-2.0 Imports: 16 Imported by: 45

Documentation

Overview

Copyright 2014 loolgame Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2014 mqant Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2014 loolgame Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Package queue provides a fast, ring-buffer queue based on the version suggested by Dariusz Górecki. Using this instead of other, simpler, queue implementations (slice+append or linked list) provides substantial memory and time benefits, and fewer GC pauses. The queue implemented here is as fast as it is for an additional reason: it is *not* thread-safe.

Copyright 2014 mqant Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2014 mqant Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2014 mqantserver Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Copyright 2014 mqant Author. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Index

Constants

View Source 
const CODE62 = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
View Source 
const CODE_LENTH = 62

Variables

View Source 
var EDOC = map[string]int64{"0": 0, "1": 1, "2": 2, "3": 3, "4": 4, "5": 5, "6": 6, "7": 7, "8": 8, "9": 9, "a": 10, "b": 11, "c": 12, "d": 13, "e": 14, "f": 15, "g": 16, "h": 17, "i": 18, "j": 19, "k": 20, "l": 21, "m": 22, "n": 23, "o": 24, "p": 25, "q": 26, "r": 27, "s": 28, "t": 29, "u": 30, "v": 31, "w": 32, "x": 33, "y": 34, "z": 35, "A": 36, "B": 37, "C": 38, "D": 39, "E": 40, "F": 41, "G": 42, "H": 43, "I": 44, "J": 45, "K": 46, "L": 47, "M": 48, "N": 49, "O": 50, "P": 51, "Q": 52, "R": 53, "S": 54, "T": 55, "U": 56, "V": 57, "W": 58, "X": 59, "Y": 60, "Z": 61}
View Source 
var SHARD_COUNT = 32

Functions

func Base62ToInt 

func Base62ToInt(str string) int64

*

  • 解码字符串为整数

func BoolToBytes 

func BoolToBytes(v bool) []byte

func BytesToBool 

func BytesToBool(buf []byte) bool

func BytesToFloat32 

func BytesToFloat32(bytes []byte) float32

func BytesToFloat64 

func BytesToFloat64(bytes []byte) float64

func BytesToInt32 

func BytesToInt32(buf []byte) int32

func BytesToInt64 

func BytesToInt64(buf []byte) int64

func BytesToMap 

func BytesToMap(bytes []byte) (map[string]interface{}, error)

func BytesToMapString 

func BytesToMapString(bytes []byte) (map[string]string, error)

func Float32ToBytes 

func Float32ToBytes(float float32) []byte

func Float64ToBytes 

func Float64ToBytes(float float64) []byte

func Int32ToBytes 

func Int32ToBytes(i int32) []byte

func Int64ToBytes 

func Int64ToBytes(i int64) []byte

func IntToBase62 

func IntToBase62(number int64) string

*

  • 编码 整数 为 base62 字符串

func MapToBytes 

func MapToBytes(jmap map[string]interface{}) ([]byte, error)

func MapToBytesString 

func MapToBytesString(jmap map[string]string) ([]byte, error)

func RandInt64 

func RandInt64(min, max int64) int64

func Struct2Map 

func Struct2Map(obj interface{}) map[string]interface{}

Types

type BeeMap 

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

BeeMap is a map with lock

func NewBeeMap 

func NewBeeMap() *BeeMap

NewBeeMap return new safemap

func (*BeeMap) Check 

func (m *BeeMap) Check(k interface{}) bool

Check Returns true if k is exist in the map.

func (*BeeMap) Delete 

func (m *BeeMap) Delete(k interface{})

Delete the given key and value.

func (*BeeMap) DeleteAll 

func (m *BeeMap) DeleteAll()

func (*BeeMap) Get 

func (m *BeeMap) Get(k interface{}) interface{}

Get from maps return the k's value

func (*BeeMap) Items 

func (m *BeeMap) Items() map[interface{}]interface{}

Items returns all items in safemap.

func (*BeeMap) Set 

func (m *BeeMap) Set(k interface{}, v interface{}) bool

Set Maps the given key and value. Returns false if the key is already in the map and changes nothing.

type ConcurrentMap 

type ConcurrentMap []*ConcurrentMapShared

A "thread" safe map of type string:Anything. To avoid lock bottlenecks this map is dived to several (SHARD_COUNT) map shards.

func New 

func New() ConcurrentMap

Creates a new concurrent map.

func (ConcurrentMap) Count 

func (m ConcurrentMap) Count() int

Returns the number of elements within the map.

func (ConcurrentMap) Get 

func (m ConcurrentMap) Get(key string) (interface{}, bool)

Retrieves an element from map under given key.

func (ConcurrentMap) GetShard 

func (m ConcurrentMap) GetShard(key string) *ConcurrentMapShared

Returns shard under given key

func (ConcurrentMap) Has 

func (m ConcurrentMap) Has(key string) bool

Looks up an item under specified key

func (ConcurrentMap) IsEmpty 

func (m ConcurrentMap) IsEmpty() bool

Checks if map is empty.

func (ConcurrentMap) Items 

func (m ConcurrentMap) Items() map[string]interface{}

Returns all items as map[string]interface{}

func (ConcurrentMap) Iter deprecated 

func (m ConcurrentMap) Iter() <-chan Tuple

Returns an iterator which could be used in a for range loop.

Deprecated: using IterBuffered() will get a better performence

func (ConcurrentMap) IterBuffered 

func (m ConcurrentMap) IterBuffered() <-chan Tuple

Returns a buffered iterator which could be used in a for range loop.

func (ConcurrentMap) IterCb 

func (m ConcurrentMap) IterCb(fn IterCb)

Callback based iterator, cheapest way to read all elements in a map.

func (ConcurrentMap) Keys 

func (m ConcurrentMap) Keys() []string

Return all keys as []string

func (ConcurrentMap) MSet 

func (m ConcurrentMap) MSet(data map[string]interface{})

func (ConcurrentMap) MarshalJSON 

func (m ConcurrentMap) MarshalJSON() ([]byte, error)

Reviles ConcurrentMap "private" variables to json marshal.

func (ConcurrentMap) Pop 

func (m ConcurrentMap) Pop(key string) (v interface{}, exists bool)

Removes an element from the map and returns it

func (ConcurrentMap) Remove 

func (m ConcurrentMap) Remove(key string)

Removes an element from the map.

func (ConcurrentMap) RemoveCb 

func (m ConcurrentMap) RemoveCb(key string, cb RemoveCb) bool

RemoveCb locks the shard containing the key, retrieves its current value and calls the callback with those params If callback returns true and element exists, it will remove it from the map Returns the value returned by the callback (even if element was not present in the map)

func (ConcurrentMap) Set 

func (m ConcurrentMap) Set(key string, value interface{})

Sets the given value under the specified key.

func (ConcurrentMap) SetIfAbsent 

func (m ConcurrentMap) SetIfAbsent(key string, value interface{}) bool

Sets the given value under the specified key if no value was associated with it.

func (ConcurrentMap) Upsert 

func (m ConcurrentMap) Upsert(key string, value interface{}, cb UpsertCb) (res interface{})

Insert or Update - updates existing element or inserts a new one using UpsertCb

type ConcurrentMapShared 

type ConcurrentMapShared struct {
	sync.RWMutex // Read Write mutex, guards access to internal map.
	// contains filtered or unexported fields
}

A "thread" safe string to anything map.

type ID 

type ID uint64

An ID is a unique, uniformly distributed 64-bit ID.

func GenerateID 

func GenerateID() ID

generateID returns a randomly-generated 64-bit ID. This function is thread-safe. IDs are produced by consuming an AES-CTR-128 keystream in 64-bit chunks. The AES key is randomly generated on initialization, as is the counter's initial state. On machines with AES-NI support, ID generation takes ~30ns and generates no garbage.

func ParseID 

func ParseID(s string) (ID, error)

ParseID parses the given string as a hexadecimal string.

func (ID) MarshalJSON 

func (id ID) MarshalJSON() ([]byte, error)

MarshalJSON encodes the ID as a hex string.

func (ID) String 

func (id ID) String() string

String returns the ID as a hex string.

func (*ID) UnmarshalJSON 

func (id *ID) UnmarshalJSON(data []byte) error

UnmarshalJSON decodes the given data as either a hexadecimal string or JSON integer.

type IterCb 

type IterCb func(key string, v interface{})

Iterator callback,called for every key,value found in maps. RLock is held for all calls for a given shard therefore callback sess consistent view of a shard, but not across the shards

type Queue 

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

Queue represents a single instance of the queue data structure.

func NewQueue 

func NewQueue() *Queue

New constructs and returns a new Queue.

func (*Queue) Add 

func (q *Queue) Add(elem interface{})

Add puts an element on the end of the queue.

func (*Queue) Get 

func (q *Queue) Get(i int) interface{}

Get returns the element at index i in the queue. If the index is invalid, the call will panic. This method accepts both positive and negative index values. Index 0 refers to the first element, and index -1 refers to the last.

func (*Queue) Length 

func (q *Queue) Length() int

Length returns the number of elements currently stored in the queue.

func (*Queue) Peek 

func (q *Queue) Peek() interface{}

Peek returns the element at the head of the queue. This call panics if the queue is empty.

func (*Queue) Remove 

func (q *Queue) Remove() interface{}

Remove removes and returns the element from the front of the queue. If the queue is empty, the call will panic.

type RedisFactory 

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

func GetRedisFactory 

func GetRedisFactory() *RedisFactory

func (RedisFactory) CloseAllPool 

func (this RedisFactory) CloseAllPool()

func (RedisFactory) GetPool 

func (this RedisFactory) GetPool(url string) *redis.Pool

type RemoveCb 

type RemoveCb func(key string, v interface{}, exists bool) bool

RemoveCb is a callback executed in a map.RemoveCb() call, while Lock is held If returns true, the element will be removed from the map

type SyncQueue 

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

Synchronous FIFO queue

func NewSyncQueue 

func NewSyncQueue() *SyncQueue

Create a new SyncQueue

func (*SyncQueue) Close 

func (q *SyncQueue) Close()

Close SyncQueue

After close, Pop will return nil without block, and TryPop will return v=nil, ok=True

func (*SyncQueue) IsClose 

func (q *SyncQueue) IsClose() (v bool)

func (*SyncQueue) Len 

func (q *SyncQueue) Len() (l int)

Get the length of SyncQueue

func (*SyncQueue) Pop 

func (q *SyncQueue) Pop() (v interface{})

Pop an item from SyncQueue, will block if SyncQueue is empty

func (*SyncQueue) Push 

func (q *SyncQueue) Push(v interface{})

Push an item to SyncQueue. Always returns immediately without blocking

func (*SyncQueue) TryPop 

func (q *SyncQueue) TryPop() (v interface{}, ok bool)

Try to pop an item from SyncQueue, will return immediately with bool=false if SyncQueue is empty

type Tuple 

type Tuple struct {
	Key string
	Val interface{}
}

Used by the Iter & IterBuffered functions to wrap two variables together over a channel,

type UpsertCb 

type UpsertCb func(exist bool, valueInMap interface{}, newValue interface{}) interface{}

Callback to return new element to be inserted into the map It is called while lock is held, therefore it MUST NOT try to access other keys in same map, as it can lead to deadlock since Go sync.RWLock is not reentrant

Source Files

View all Source files

Directories

Path Synopsis
fatih
structs
Package structs contains various utilities functions to work with structs.
 Package structs contains various utilities functions to work with structs.
lib
addr
codes

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