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Go configuration with fangs!

Many Go projects are built using Viper including:

Install

go get github.com/spf13/viper

Note: Viper uses Go Modules to manage dependencies.

What is Viper?

Viper is a complete configuration solution for Go applications including 12-Factor apps. It is designed
to work within an application, and can handle all types of configuration needs
and formats. It supports:

  • setting defaults
  • reading from JSON, TOML, YAML, HCL, envfile and Java properties config files
  • live watching and re-reading of config files (optional)
  • reading from environment variables
  • reading from remote config systems (etcd or Consul), and watching changes
  • reading from command line flags
  • reading from buffer
  • setting explicit values

Viper can be thought of as a registry for all of your applications configuration needs.

Why Viper?

When building a modern application, you don’t want to worry about
configuration file formats; you want to focus on building awesome software.
Viper is here to help with that.

Viper does the following for you:

  1. Find, load, and unmarshal a configuration file in JSON, TOML, YAML, HCL, INI, envfile or Java properties formats.
  2. Provide a mechanism to set default values for your different configuration options.
  3. Provide a mechanism to set override values for options specified through command line flags.
  4. Provide an alias system to easily rename parameters without breaking existing code.
  5. Make it easy to tell the difference between when a user has provided a command line or config file which is the same as the default.

Viper uses the following precedence order. Each item takes precedence over the item below it:

  • explicit call to Set
  • flag
  • env
  • config
  • key/value store
  • default

Important: Viper configuration keys are case insensitive.
There are ongoing discussions about making that optional.

Putting Values into Viper

Establishing Defaults

A good configuration system will support default values. A default value is not
required for a key, but it’s useful in the event that a key hasn’t been set via
config file, environment variable, remote configuration or flag.

Examples:

viper

.

SetDefault

(

"ContentDir"

,

"content"

)

viper

.

SetDefault

(

"LayoutDir"

,

"layouts"

)

viper

.

SetDefault

(

"Taxonomies"

,

map

[

string

]

string

{

"tag"

:

"tags"

,

"category"

:

"categories"

})

Reading Config Files

Viper requires minimal configuration so it knows where to look for config files.
Viper supports JSON, TOML, YAML, HCL, INI, envfile and Java Properties files. Viper can search multiple paths, but
currently a single Viper instance only supports a single configuration file.
Viper does not default to any configuration search paths leaving defaults decision
to an application.

Here is an example of how to use Viper to search for and read a configuration file.
None of the specific paths are required, but at least one path should be provided
where a configuration file is expected.

viper

.

SetConfigName

(

"config"

)

// name of config file (without extension)

viper

.

SetConfigType

(

"yaml"

)

// REQUIRED if the config file does not have the extension in the name

viper

.

AddConfigPath

(

"/etc/appname/"

)

// path to look for the config file in

viper

.

AddConfigPath

(

"$HOME/.appname"

)

// call multiple times to add many search paths

viper

.

AddConfigPath

(

"."

)

// optionally look for config in the working directory

err

:=

viper

.

ReadInConfig

()

// Find and read the config file

if

err

!=

nil

{

// Handle errors reading the config file

panic

(

fmt

.

Errorf

(

"Fatal error config file: %w

\n

"

,

err

)) }

You can handle the specific case where no config file is found like this:

if

err

:=

viper

.

ReadInConfig

();

err

!=

nil

{

if

_

,

ok

:=

err

.(viper.

ConfigFileNotFoundError

);

ok

{

// Config file not found; ignore error if desired

}

else

{

// Config file was found but another error was produced

} }

// Config file found and successfully parsed

NOTE [since 1.6]: You can also have a file without an extension and specify the format programmaticaly. For those configuration files that lie in the home of the user without any extension like .bashrc

Writing Config Files

Reading from config files is useful, but at times you want to store all modifications made at run time.
For that, a bunch of commands are available, each with its own purpose:

  • WriteConfig – writes the current viper configuration to the predefined path, if exists. Errors if no predefined path. Will overwrite the current config file, if it exists.
  • SafeWriteConfig – writes the current viper configuration to the predefined path. Errors if no predefined path. Will not overwrite the current config file, if it exists.
  • WriteConfigAs – writes the current viper configuration to the given filepath. Will overwrite the given file, if it exists.
  • SafeWriteConfigAs – writes the current viper configuration to the given filepath. Will not overwrite the given file, if it exists.

As a rule of the thumb, everything marked with safe won’t overwrite any file, but just create if not existent, whilst the default behavior is to create or truncate.

A small examples section:

viper

.

WriteConfig

()

// writes current config to predefined path set by 'viper.AddConfigPath()' and 'viper.SetConfigName'

viper

.

SafeWriteConfig

()

viper

.

WriteConfigAs

(

"/path/to/my/.config"

)

viper

.

SafeWriteConfigAs

(

"/path/to/my/.config"

)

// will error since it has already been written

viper

.

SafeWriteConfigAs

(

"/path/to/my/.other_config"

)

Watching and re-reading config files

Viper supports the ability to have your application live read a config file while running.

Gone are the days of needing to restart a server to have a config take effect,
viper powered applications can read an update to a config file while running and
not miss a beat.

Simply tell the viper instance to watchConfig.
Optionally you can provide a function for Viper to run each time a change occurs.

Make sure you add all of the configPaths prior to calling WatchConfig()

viper

.

OnConfigChange

(

func

(

e

fsnotify.

Event

) {

fmt

.

Println

(

"Config file changed:"

,

e

.

Name

) })

viper

.

WatchConfig

()

Reading Config from io.Reader

Viper predefines many configuration sources such as files, environment
variables, flags, and remote K/V store, but you are not bound to them. You can
also implement your own required configuration source and feed it to viper.

viper

.

SetConfigType

(

"yaml"

)

// or viper.SetConfigType("YAML")

// any approach to require this configuration into your program.

var

yamlExample

=

[]

byte

(

`

Hacker: true

name: steve

hobbies:

- skateboarding

- snowboarding

- go

clothing:

jacket: leather

trousers: denim

age: 35

eyes : brown

beard: true

`

)

viper

.

ReadConfig

(

bytes

.

NewBuffer

(

yamlExample

))

viper

.

Get

(

"name"

)

// this would be "steve"

Setting Overrides

These could be from a command line flag, or from your own application logic.

viper

.

Set

(

"Verbose"

,

true

)

viper

.

Set

(

"LogFile"

,

LogFile

)

Registering and Using Aliases

Aliases permit a single value to be referenced by multiple keys

viper

.

RegisterAlias

(

"loud"

,

"Verbose"

)

viper

.

Set

(

"verbose"

,

true

)

// same result as next line

viper

.

Set

(

"loud"

,

true

)

// same result as prior line

viper

.

GetBool

(

"loud"

)

// true

viper

.

GetBool

(

"verbose"

)

// true

Working with Environment Variables

Viper has full support for environment variables. This enables 12 factor
applications out of the box. There are five methods that exist to aid working
with ENV:

  • AutomaticEnv()
  • BindEnv(string...) : error
  • SetEnvPrefix(string)
  • SetEnvKeyReplacer(string...) *strings.Replacer
  • AllowEmptyEnv(bool)

When working with ENV variables, it’s important to recognize that Viper
treats ENV variables as case sensitive.

Viper provides a mechanism to try to ensure that ENV variables are unique. By
using SetEnvPrefix, you can tell Viper to use a prefix while reading from
the environment variables. Both BindEnv and AutomaticEnv will use this
prefix.

BindEnv takes one or more parameters. The first parameter is the key name, the
rest are the name of the environment variables to bind to this key. If more than
one are provided, they will take precedence in the specified order. The name of
the environment variable is case sensitive. If the ENV variable name is not provided, then
Viper will automatically assume that the ENV variable matches the following format: prefix + “_” + the key name in ALL CAPS. When you explicitly provide the ENV variable name (the second parameter),
it does not automatically add the prefix. For example if the second parameter is “id”,
Viper will look for the ENV variable “ID”.

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One important thing to recognize when working with ENV variables is that the
value will be read each time it is accessed. Viper does not fix the value when
the BindEnv is called.

AutomaticEnv is a powerful helper especially when combined with
SetEnvPrefix. When called, Viper will check for an environment variable any
time a viper.Get request is made. It will apply the following rules. It will
check for an environment variable with a name matching the key uppercased and
prefixed with the EnvPrefix if set.

SetEnvKeyReplacer allows you to use a strings.Replacer object to rewrite Env
keys to an extent. This is useful if you want to use - or something in your
Get() calls, but want your environmental variables to use _ delimiters. An
example of using it can be found in viper_test.go.

Alternatively, you can use EnvKeyReplacer with NewWithOptions factory function.
Unlike SetEnvKeyReplacer, it accepts a StringReplacer interface allowing you to write custom string replacing logic.

By default empty environment variables are considered unset and will fall back to
the next configuration source. To treat empty environment variables as set, use
the AllowEmptyEnv method.

Env example

SetEnvPrefix

(

"spf"

)

// will be uppercased automatically

BindEnv

(

"id"

)

os

.

Setenv

(

"SPF_ID"

,

"13"

)

// typically done outside of the app

id

:=

Get

(

"id"

)

// 13

Working with Flags

Viper has the ability to bind to flags. Specifically, Viper supports Pflags
as used in the Cobra library.

Like BindEnv, the value is not set when the binding method is called, but when
it is accessed. This means you can bind as early as you want, even in an
init() function.

For individual flags, the BindPFlag() method provides this functionality.

Example:

serverCmd

.

Flags

().

Int

(

"port"

,

1138

,

"Port to run Application server on"

)

viper

.

BindPFlag

(

"port"

,

serverCmd

.

Flags

().

Lookup

(

"port"

))

You can also bind an existing set of pflags (pflag.FlagSet):

Example:

pflag

.

Int

(

"flagname"

,

1234

,

"help message for flagname"

)

pflag

.

Parse

()

viper

.

BindPFlags

(

pflag

.

CommandLine

)

i

:=

viper

.

GetInt

(

"flagname"

)

// retrieve values from viper instead of pflag

The use of pflag in Viper does not preclude
the use of other packages that use the flag
package from the standard library. The pflag package can handle the flags
defined for the flag package by importing these flags. This is accomplished
by a calling a convenience function provided by the pflag package called
AddGoFlagSet().

Example:

package

main

import

(

"flag"

"github.com/spf13/pflag"

)

func

main

() {

// using standard library "flag" package

flag

.

Int

(

"flagname"

,

1234

,

"help message for flagname"

)

pflag

.

CommandLine

.

AddGoFlagSet

(

flag

.

CommandLine

)

pflag

.

Parse

()

viper

.

BindPFlags

(

pflag

.

CommandLine

)

i

:=

viper

.

GetInt

(

"flagname"

)

// retrieve value from viper

// ...

}

Flag interfaces

Viper provides two Go interfaces to bind other flag systems if you don’t use Pflags.

FlagValue represents a single flag. This is a very simple example on how to implement this interface:

type

myFlag

struct

{}

func

(

f

myFlag

)

HasChanged

()

bool

{

return

false

}

func

(

f

myFlag

)

Name

()

string

{

return

"my-flag-name"

}

func

(

f

myFlag

)

ValueString

()

string

{

return

"my-flag-value"

}

func

(

f

myFlag

)

ValueType

()

string

{

return

"string"

}

Once your flag implements this interface, you can simply tell Viper to bind it:

viper

.

BindFlagValue

(

"my-flag-name"

,

myFlag

{})

FlagValueSet represents a group of flags. This is a very simple example on how to implement this interface:

type

myFlagSet

struct

{

flags

[]

myFlag

}

func

(

f

myFlagSet

)

VisitAll

(

fn

func

(

FlagValue

)) {

for

_

,

flag

:=

range

flags

{

fn

(

flag

) } }

Once your flag set implements this interface, you can simply tell Viper to bind it:

fSet

:=

myFlagSet

{

flags

: []

myFlag

{

myFlag

{},

myFlag

{}}, }

viper

.

BindFlagValues

(

"my-flags"

,

fSet

)

Remote Key/Value Store Support

To enable remote support in Viper, do a blank import of the viper/remote
package:

import _ "github.com/spf13/viper/remote"

Viper will read a config string (as JSON, TOML, YAML, HCL or envfile) retrieved from a path
in a Key/Value store such as etcd or Consul. These values take precedence over
default values, but are overridden by configuration values retrieved from disk,
flags, or environment variables.

Viper uses crypt to retrieve
configuration from the K/V store, which means that you can store your
configuration values encrypted and have them automatically decrypted if you have
the correct gpg keyring. Encryption is optional.

You can use remote configuration in conjunction with local configuration, or
independently of it.

crypt has a command-line helper that you can use to put configurations in your
K/V store. crypt defaults to etcd on http://127.0.0.1:4001.

$ go get github.com/bketelsen/crypt/bin/crypt
$ crypt 

set

-plaintext /config/hugo.json /Users/hugo/settings/config.json

Confirm that your value was set:

$ crypt get -plaintext /config/hugo.json

See the crypt documentation for examples of how to set encrypted values, or
how to use Consul.

Remote Key/Value Store Example – Unencrypted

etcd

viper

.

AddRemoteProvider

(

"etcd"

,

"http://127.0.0.1:4001"

,

"/config/hugo.json"

)

viper

.

SetConfigType

(

"json"

)

// because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"

err

:=

viper

.

ReadRemoteConfig

()

Consul

You need to set a key to Consul key/value storage with JSON value containing your desired config.
For example, create a Consul key/value store key MY_CONSUL_KEY with value:

{
    

"port"

:

8080

,

"hostname"

:

"

myhostname.com

"

}

viper

.

AddRemoteProvider

(

"consul"

,

"localhost:8500"

,

"MY_CONSUL_KEY"

)

viper

.

SetConfigType

(

"json"

)

// Need to explicitly set this to json

err

:=

viper

.

ReadRemoteConfig

()

fmt

.

Println

(

viper

.

Get

(

"port"

))

// 8080

fmt

.

Println

(

viper

.

Get

(

"hostname"

))

// myhostname.com

Firestore

viper

.

AddRemoteProvider

(

"firestore"

,

"google-cloud-project-id"

,

"collection/document"

)

viper

.

SetConfigType

(

"json"

)

// Config's format: "json", "toml", "yaml", "yml"

err

:=

viper

.

ReadRemoteConfig

()

Of course, you’re allowed to use SecureRemoteProvider also

Remote Key/Value Store Example – Encrypted

viper

.

AddSecureRemoteProvider

(

"etcd"

,

"http://127.0.0.1:4001"

,

"/config/hugo.json"

,

"/etc/secrets/mykeyring.gpg"

)

viper

.

SetConfigType

(

"json"

)

// because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"

err

:=

viper

.

ReadRemoteConfig

()

Watching Changes in etcd – Unencrypted

// alternatively, you can create a new viper instance.

var

runtime_viper

=

viper

.

New

()

runtime_viper

.

AddRemoteProvider

(

"etcd"

,

"http://127.0.0.1:4001"

,

"/config/hugo.yml"

)

runtime_viper

.

SetConfigType

(

"yaml"

)

// because there is no file extension in a stream of bytes, supported extensions are "json", "toml", "yaml", "yml", "properties", "props", "prop", "env", "dotenv"

// read from remote config the first time.

err

:=

runtime_viper

.

ReadRemoteConfig

()

// unmarshal config

runtime_viper

.

Unmarshal

(

&

runtime_conf

)

// open a goroutine to watch remote changes forever

go

func

(){

for

{

time

.

Sleep

(

time

.

Second

*

5

)

// delay after each request

// currently, only tested with etcd support

err

:=

runtime_viper

.

WatchRemoteConfig

()

if

err

!=

nil

{

log

.

Errorf

(

"unable to read remote config: %v"

,

err

)

continue

}

// unmarshal new config into our runtime config struct. you can also use channel

// to implement a signal to notify the system of the changes

runtime_viper

.

Unmarshal

(

&

runtime_conf

) } }()

Getting Values From Viper

In Viper, there are a few ways to get a value depending on the value’s type.
The following functions and methods exist:

  • Get(key string) : interface{}
  • GetBool(key string) : bool
  • GetFloat64(key string) : float64
  • GetInt(key string) : int
  • GetIntSlice(key string) : []int
  • GetString(key string) : string
  • GetStringMap(key string) : map[string]interface{}
  • GetStringMapString(key string) : map[string]string
  • GetStringSlice(key string) : []string
  • GetTime(key string) : time.Time
  • GetDuration(key string) : time.Duration
  • IsSet(key string) : bool
  • AllSettings() : map[string]interface{}

One important thing to recognize is that each Get function will return a zero
value if it’s not found. To check if a given key exists, the IsSet() method
has been provided.

Example:

viper

.

GetString

(

"logfile"

)

// case-insensitive Setting & Getting

if

viper

.

GetBool

(

"verbose"

) {

fmt

.

Println

(

"verbose enabled"

) }

Accessing nested keys

The accessor methods also accept formatted paths to deeply nested keys. For
example, if the following JSON file is loaded:

{
    

"host"

: {

"address"

:

"

localhost

"

,

"port"

:

5799

},

"datastore"

: {

"metric"

: {

"host"

:

"

127.0.0.1

"

,

"port"

:

3099

},

"warehouse"

: {

"host"

:

"

198.0.0.1

"

,

"port"

:

2112

} } }

Viper can access a nested field by passing a . delimited path of keys:

GetString

(

"datastore.metric.host"

)

// (returns "127.0.0.1")

This obeys the precedence rules established above; the search for the path
will cascade through the remaining configuration registries until found.

For example, given this configuration file, both datastore.metric.host and
datastore.metric.port are already defined (and may be overridden). If in addition
datastore.metric.protocol was defined in the defaults, Viper would also find it.

However, if datastore.metric was overridden (by a flag, an environment variable,
the Set() method, …) with an immediate value, then all sub-keys of
datastore.metric become undefined, they are “shadowed” by the higher-priority
configuration level.

Viper can access array indices by using numbers in the path. For example:

{
    

"host"

: {

"address"

:

"

localhost

"

,

"ports"

: [

5799

,

6029

] },

"datastore"

: {

"metric"

: {

"host"

:

"

127.0.0.1

"

,

"port"

:

3099

},

"warehouse"

: {

"host"

:

"

198.0.0.1

"

,

"port"

:

2112

} } }

GetInt("host.ports.1") // returns 6029

Lastly, if there exists a key that matches the delimited key path, its value
will be returned instead. E.g.

{
    

"datastore.metric.host"

:

"

0.0.0.0

"

,

"host"

: {

"address"

:

"

localhost

"

,

"port"

:

5799

},

"datastore"

: {

"metric"

: {

"host"

:

"

127.0.0.1

"

,

"port"

:

3099

},

"warehouse"

: {

"host"

:

"

198.0.0.1

"

,

"port"

:

2112

} } }

GetString("datastore.metric.host") // returns "0.0.0.0"

Extracting a sub-tree

When developing reusable modules, it’s often useful to extract a subset of the configuration
and pass it to a module. This way the module can be instantiated more than once, with different configurations.

For example, an application might use multiple different cache stores for different purposes:

cache

:

cache1

:

max-items

:

100

item-size

:

64

cache2

:

max-items

:

200

item-size

:

80

We could pass the cache name to a module (eg. NewCache("cache1")),
but it would require weird concatenation for accessing config keys and would be less separated from the global config.

So instead of doing that let’s pass a Viper instance to the constructor that represents a subset of the configuration:

cache1Config

:=

viper

.

Sub

(

"cache.cache1"

)

if

cache1Config

==

nil

{

// Sub returns nil if the key cannot be found

panic

(

"cache configuration not found"

) }

cache1

:=

NewCache

(

cache1Config

)

Note: Always check the return value of Sub. It returns nil if a key cannot be found.

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Internally, the NewCache function can address max-items and item-size keys directly:

func

NewCache

(

v

*

Viper

)

*

Cache

{

return

&

Cache

{

MaxItems

:

v

.

GetInt

(

"max-items"

),

ItemSize

:

v

.

GetInt

(

"item-size"

), } }

The resulting code is easy to test, since it’s decoupled from the main config structure,
and easier to reuse (for the same reason).

Unmarshaling

You also have the option of Unmarshaling all or a specific value to a struct, map,
etc.

There are two methods to do this:

  • Unmarshal(rawVal interface{}) : error
  • UnmarshalKey(key string, rawVal interface{}) : error

Example:

type

config

struct

{

Port

int

Name

string

PathMap

string

`mapstructure:"path_map"`

}

var

C

config

err

:=

viper

.

Unmarshal

(

&

C

)

if

err

!=

nil

{

t

.

Fatalf

(

"unable to decode into struct, %v"

,

err

) }

If you want to unmarshal configuration where the keys themselves contain dot (the default key delimiter),
you have to change the delimiter:

v

:=

viper

.

NewWithOptions

(

viper

.

KeyDelimiter

(

"::"

))

v

.

SetDefault

(

"chart::values"

,

map

[

string

]

interface

{}{

"ingress"

:

map

[

string

]

interface

{}{

"annotations"

:

map

[

string

]

interface

{}{

"traefik.frontend.rule.type"

:

"PathPrefix"

,

"traefik.ingress.kubernetes.io/ssl-redirect"

:

"true"

, }, }, })

type

config

struct

{

Chart

struct

{

Values

map

[

string

]

interface

{} } }

var

C

config

v

.

Unmarshal

(

&

C

)

Viper also supports unmarshaling into embedded structs:

/*

Example config:

module:

enabled: true

token: 89h3f98hbwf987h3f98wenf89ehf

*/

type

config

struct

{

Module

struct

{

Enabled

bool

moduleConfig

`mapstructure:",squash"`

} }

// moduleConfig could be in a module specific package

type

moduleConfig

struct

{

Token

string

}

var

C

config

err

:=

viper

.

Unmarshal

(

&

C

)

if

err

!=

nil

{

t

.

Fatalf

(

"unable to decode into struct, %v"

,

err

) }

Viper uses github.com/mitchellh/mapstructure under the hood for unmarshaling values which uses mapstructure tags by default.

Decoding custom formats

A frequently requested feature for Viper is adding more value formats and decoders.
For example, parsing character (dot, comma, semicolon, etc) separated strings into slices.

This is already available in Viper using mapstructure decode hooks.

Read more about the details in this blog post.

Marshalling to string

You may need to marshal all the settings held in viper into a string rather than write them to a file.
You can use your favorite format’s marshaller with the config returned by AllSettings().

import

( yaml

"gopkg.in/yaml.v2"

// ...

)

func

yamlStringSettings

()

string

{

c

:=

viper

.

AllSettings

()

bs

,

err

:=

yaml

.

Marshal

(

c

)

if

err

!=

nil

{

log

.

Fatalf

(

"unable to marshal config to YAML: %v"

,

err

) }

return

string

(

bs

) }

Viper or Vipers?

Viper comes ready to use out of the box. There is no configuration or
initialization needed to begin using Viper. Since most applications will want
to use a single central repository for their configuration, the viper package
provides this. It is similar to a singleton.

In all of the examples above, they demonstrate using viper in its singleton
style approach.

Working with multiple vipers

You can also create many different vipers for use in your application. Each will
have its own unique set of configurations and values. Each can read from a
different config file, key value store, etc. All of the functions that viper
package supports are mirrored as methods on a viper.

Example:

x

:=

viper

.

New

()

y

:=

viper

.

New

()

x

.

SetDefault

(

"ContentDir"

,

"content"

)

y

.

SetDefault

(

"ContentDir"

,

"foobar"

)

//...

When working with multiple vipers, it is up to the user to keep track of the
different vipers.

Q & A

Why is it called “Viper”?

A: Viper is designed to be a companion
to Cobra. While both can operate completely
independently, together they make a powerful pair to handle much of your
application foundation needs.

Why is it called “Cobra”?

Is there a better name for a commander?

Does Viper support case sensitive keys?

tl;dr: No.

Viper merges configuration from various sources, many of which are either case insensitive or uses different casing than the rest of the sources (eg. env vars).
In order to provide the best experience when using multiple sources, the decision has been made to make all keys case insensitive.

There has been several attempts to implement case sensitivity, but unfortunately it’s not that trivial. We might take a stab at implementing it in Viper v2, but despite the initial noise, it does not seem to be requested that much.

You can vote for case sensitivity by filling out this feedback form: https://forms.gle/R6faU74qPRPAzchZ9

Is it safe to concurrently read and write to a viper?

No, you will need to synchronize access to the viper yourself (for example by using the sync package). Concurrent reads and writes can cause a panic.

Troubleshooting

See TROUBLESHOOTING.md.

[NEW] Tiểu sử Viper LOL: EDG Viper là ai? | viper lol – Vietnamnhanvan

Viper là ai ? Viper là thần đồng trong làng liên minh huyền thoại thế giới đã sản sinh. Tài năng của Viper là điều không ai có thể bàn cãi. Viper từng được kỳ vọng trở thành người kế thừa Faker – thế nhưng sự nghiệp của anh chàng này khá lận đận. Ở độ tuổi có sức trẻ và kỹ năng tốt nhất thì Griffin tan rã – khi phong độ cao nhất trong sự nghiệp thì Viper lại phải gồng gánh 1 HLE toàn tạ. HLE Viper có lẽ là cái tên mà khiến người hâm mộ tiếc nuối nhất tính cho đến thời điển hiện tại.

Hôm nay hãy cùng Phegame.net tìm hiểu cuộc đời, sự nghiệp và tiểu sử HLE Viper – người đường giữa top đầu thế giới giai đoạn hiện tại (năm 2021)

I. EDG Viper là ai? Thông tin cá nhân Viper

Viper ” Park Do-hyeon (박도현) là một chơi eSports, hiện đang chơi vị trí Xạ thủ – đường dưới cho Edward Gaming .

Thông tin chi tiết về Viper:

Tên thật

Park Do-hyeon (박도현)

Quốc tịch

Hàn Quốc

Ngày sinh

October 19, 2000 (age 20)

Đội tuyển thi đấu

EDG

Vị trí thi đấu

AD – Xạ thủ

Ingame Rank

viper3

II. Các đội tuyển Viper thi đấu

Trong sự nghiệp của mình Viper tham gia cho 3 đội tuyển. Chi tiết:

Đội tuyển

Bắt đầu

Kết Thúc

Griffin

Tháng 12/ 2017

Tháng 5 năm 2020

Hanwha Life

Tháng 5/2020

Tháng 12 năm 2020

EDward Gaminglogo std.png EDG

EDG

Tháng 11/2020

Tháng 11/2020

III. Sự nghiệp và tiểu sử EDG Viper

1. Viper là ai ? Sự nghiệp anh ấy bắt đầu từ khi nào ?

Viper bắt đầu sự nghiệp LMHT chuyên nghiệp từ năm 2017 trong màu áo của Griffin.

Một vài điều nổi bật của Viper:

  • Viper có thể nói Tiếng Anh và Tiếng Hàn

  • Trong thời gian thi đấu cho 

    Griffin

    , Viper được biết đến là một người đi đường dưới có khả năng chơi những vị tướng pháp sư khác thường, chẳng hạn như

    Viktor

    Taliyah

     . Anh ấy đã chơi nổi tiếng trong

     trận Playoffs LCK 2019 mùa xuân

     .

  • Viper là người thứ 2 sau

    imp

    đạt được pentakill cả LCK và Worlds.

Tên nhân vật trong rank LMHT của Viper sử dụng: viper3, vaemqrlcxvz

Những vị tướng nổi tiếng của Viper : Aphelios, Vayne, Kai’sa,…

Cuộc đời và sự nghiệp Viper EDG

2. Con đường game thủ chuyên nghiệp Viper bắt đầu khi nào ?

Mùa giải 2017

  • Griffin Viper vs Chovy tham gia. cvMax (Huấn luyện viên trưởng cho Huấn luyện viên trưởng) và Kang Dae-hee

Mùa giải 2019

  • GRF 25 tháng 1, Sword, Tarzan ,Chovy ,Rather ,Viper ,Lehends , và Các hợp đồng của Kabbie được cập nhật hết hạn vào ngày 15 tháng 11 năm 2021.

Mùa giải 2020

  • Untara, Ucal, and Viper rời Griffin
  • HLE

    HLE

    Viper tham gia vào HLE

  • HLE

    HLE

    21 tháng 5, Hợp đồng của DuDu gia hạn đến ngày 21 tháng 11 năm 2022. Hợp đồng của Viper được cập nhật đến ngày 16 tháng 11 năm 2020.

  • HLE:

    HLE:

    16 tháng 11 năm 2019

    16 tháng 11 năm 2019

    Viper

    Lehends

    rời.

  • EDward Gaminglogo std.png EDG:

    EDG:

    16 tháng 12 năm

    Viper

    tham gia vào EDG.

Mùa giải 2021 – Nay

  • EDward Gaminglogo std.png EDG

    EDG

    Hợp đồng Flandre , Scount, và Meiko được cập nhật hết hạn vào ngày 22 tháng 11 năm 2022.

    Hợp đồng Flandre , Scount, và Meiko được cập nhật hết hạn vào ngày 22 tháng 11 năm 2022.

    • Hợp đồng JieJie và  Xiaoxiang được cập nhật hết hạn vào ngày 21 tháng 11 năm 2023.
      Viper , Clearlove và JunJia được cập nhật hết hạn vào ngày 16 tháng 11 năm 2021.

Viper và những kỳ chung kết thế giới LMHT

  • Năm 2019 là một năm rất buồn của Griffin khi mà họ gặp phải bê bối nội bộ và cvMax bị xa thải trước khi CKTG diễn ra.
  • 2021: Năm nay Viper cùng EDG đến CKTG 2021 với vai trò hạt giống số 1 LPL.

IV. Thành tích của Viper đạt được khi thi đấu LMHT

Thành tích Viper trong đội tuyển

  • 2 lần đạt Á Quân LCK
  • Vô địch LPL hè 2021

Thành tích cá nhân Viper

  • Update sau…

Viper hiện tại đang là chủ lực chính của EDG và từng bước từng bước đến với CKTG 2021 hy vọng Viper có thể cùng EDG tiến xa tại chung kết thế giới 2021!

Như vậy là chúng ta đã kết thúc tiểu sử Viper. EDG Viper là ai? – một siêu xạ thủ LMHT của giai đoạn hiện tại. Ngoài ra, đừng quên để lại bình luận và theo dõi các tuyển thủ khác trong chuyên mục hồ sơ game thủ LMHT của chúng tôi nhé

Đánh giá post


Viper ¨The ADC God¨ Montage


Viper Montage Best of Viper
➤ Subscribe for daily League of Legends content!
➤ Please leave a like, comment and share this video if you liked it!
➤ Viper
Park \”Viper\” Dohyeon (Hangul: 박도현) is a League of Legends esports player, currently bot laner for EDward Gaming. He can speak English. During his time on Griffin (Korean Team), he was known for being a bot laner who was able to play unusual mage picks, such as Viktor and Taliyah. Which he famously played in the LCK 2019 SpringPlayoffs. Second player after imp to score pentakill both in LCK and Worlds.
➤ Follow Viper
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♬ Music and Audio ♬
We did not create any of the songs. Please if you like any of the songs please show the creators some respected love. Thank you!
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3:18 Jim Yosef \u0026 EMM Shudder
Youtube: https://www.youtube.com/watch?v=EnyiGmM5M7Y\u0026ab_channel=NoCopyrightSounds
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montage viper

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Viper ¨The ADC God¨ Montage

Viper Montage


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✦ We release League of Legends content every day!
➤ Viper
Park \”Viper\” Dohyeon (Hangul: 박도현) is a League of Legends esports player, currently bot laner for EDward Gaming. He can speak English.
During his time on Griffin (Korean Team), he was known for being a bot laner who was able to play unusual mage picks, such as Viktor and Taliyah. Which he famously played in the LCK 2019 Spring Playoffs.
➤ EDward Gaming
EDward Gaming is a Chinese professional esports organization. EDward Gaming first entered professional League of Legends in September 2013. EDG secured a spot in the 2014 LPL Spring split by acquiring the slot of LMQ, who had left to compete in the 2014 NA Challenger Series. EDG’s acquisitions were U, former Positive Energy AD Carry NaMei, World Elite players ClearLove and fzzf, and Koro1 as their top laner.
EDG’s 2016 preseason saw AmazingJ and BaeMe leave the team, while Mouse, rq, and Athena the former mid laner of Korea’s new rising star team Ever joined. They were drawn into Group B for the 2016 LPL Spring Season.
The spring season started off fairly rocky for EDG. They dropped series in an attempt to integrate their substitute jungler, Mitty, to the team. Along with PawN being subbed out due to his back injury, the team suffered early in the split; however, they soon recovered form. PawN returned, and played until finals, and the team began to play their old macrostyle. They almost tied with Royal Never Give Up for first in their group, only being down one series.
In the Spring Playoffs, the Qiao Gu Reapers, now known as Newbee, were unable to field a midlaner, thus forfeiting their semifinal match to EDG. The LPL Spring finale resulted in a 13 loss for EDG to Royal Never Give Up. Despite being expected to be a close series, the Chinese players of RNG performed better and took strong control of the series.
Before the summer season started, it was announced that PawN was stepping down to recover from him back injury. Scout was announced to take his place. Once the season started, mouse took the place of the longstanding toplaner Koro1. What followed was the most dominating domestic performance in the history of the LPL, with EDG emerging undefeated in the 16 bestof3 of the Summer Split, only dropping 5 maps out of a total of 37 (86% win rate on single maps). The team qualified for the Playoffs Semifinals, where they defeated Team WE 32 and advanced to the Finals against the reigning champions, RNG; this time it was EDG’s time to shine, as they closed their perfect season with a clearcut 30 victory and thus secured a spot in the 2016 Season World Championship as the first seed for China.
EDG was drafted into Group C, alongside the second seeds from Taiwan and Europe, Ahq eSports Club and H2kGaming, and the International Wild Card representative INTZ eSports. After a huge upset loss in their first game against the Brazilian team, the team managed to secure second place after losing the tiebreaker for first place against a surging H2k. Three days before their Quarterfinals series against ROX Tigers top laner mouse returned to China due to an unfortunate issue of his family, with Koro1 rejoining the team for the Bracket Stage matches.[3] The inability to step up their play in a clutch series, a poor performance from Clearlove and an excessive reliance on bot lane success ultimately led to a 13 defeat at the hands of the Korean team.
After Clearlove stepped down as the team’s main jungler as well as Deft and PawN leaving the team, EDG struggled more than they ever did in the past. They failed to defend their LPL title in the 2017 LPL Spring Season and lost 13 to RNG in the 2017 Spring Playoffs semifinals. They placed 3rd after taking down OMG 32 in the third place match. Summer was much better for the team after Clearlove stepped back in as the primary jungler and leader. EDG reclaimed their throne as LPL champions after taking down RNG 32 in the finals of the playoffs. Their 2017 Season World Championship participation wasn’t so stellar and ultimately EDG was knocked out of Worlds in the group stage. They finished tied for 3rd place along with ahq eSports Club.
➤ Make sure to follow Viper
lolpros: https://lolpros.gg/player/viper1/
douyu: https://www.douyu.com/5306349
Twitter: https://twitter.com/HLEviper
♬ Music and Audio ♬
0:00 Morley \u0026 Speo Hope
Youtube: https://www.youtube.com/watch?v=AUEdtwct0ac\u0026ab_channel=NoCopyrightSounds
3:34 Fareoh Under Water
Youtube: https://www.youtube.com/watch?v=xzyRoshFFaA\u0026ab_channel=NoCopyrightSounds
6:20 Dread Pitt Pyro
https://www.youtube.com/watch?v=Ji6DuevDUCM\u0026ab_channel=NoCopyrightSounds
We did not create any of the songs. Please if you like the songs please show the creators some respected love. Thank you!

Viper Montage

Viper ¨The ADC GOD¨ Montage


Viper Montage Best of Viper 2021
➤ Subscribe for daily League of Legends content!
➤ Please leave a like, comment and share this video if you liked it!
➤ Viper
Park \”Viper\” Dohyeon (Hangul: 박도현) is a League of Legends esports player, currently bot laner for EDward Gaming. He can speak English.
During his time on Griffin (Korean Team), he was known for being a bot laner who was able to play unusual mage picks, such as Viktor and Taliyah. Which he famously played in the LCK 2019 Spring Playoffs. Second player after imp to score pentakill both in LCK and Worlds.
➤ Follow Viper
● lolpros: https://lolpros.gg/player/viper1/
● douyu: https://www.douyu.com/5306349
● Twitter: https://twitter.com/HLEviper
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♬ Music and Audio ♬
We did not create any of the songs. Please if you like any of the songs please show the creators some respected love. Thank you!
0:00 Fareoh Under Water
Youtube: https://www.youtube.com/watch?v=xzyRoshFFaA\u0026ab_channel=NoCopyrightSounds
2:45 Alisky Grow (feat. VØR)
Youtube: https://www.youtube.com/watch?v=ZbnMeTzzjZE\u0026ab_channel=NoCopyrightSounds
5:16 Unknown Brain Superhero (feat. Chris Linton)
Youtube: https://www.youtube.com/watch?v=LHvYrn3FAgI\u0026ab_channel=NoCopyrightSounds
8:16 Heuse \u0026 Zeus x Crona Pill (feat. Emma Sameth)
Youtube: https://www.youtube.com/watch?v=CLiXUT3MS34\u0026ab_channel=NoCopyrightSounds
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montage viper

Viper ¨The ADC GOD¨ Montage

GUMAYUSI APHELIOS POV / T1 VS EDG [WORLDS]


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GUMAYUSI APHELIOS POV / T1 VS EDG [WORLDS]

PHÂN TÍCH PROVIEW T1 KERIA LULU, TÀI NĂNG TRẺ 2002 ! (LMHT) CKTG 2021 LOL WORLDS 2021, T1 VS DFM


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