1642593920
NFT marketplace development is something that you should get your hands on, as they prove their worth in the fraternity claiming to be one of the best in terms of business, making high-end profits. Develop your marketplace with the help of leading companies using their services to gain a high range NFT marketplace.
The NFT marketplace platform is a decentralized platform where users can create, buy, sell, and store non-fungible tokens. NFT marketplaces specialize in the sale of specific assets. For example, users can buy and sell tweets on the Valuables NFT marketplace.
The example of a leading marketplace is such that Opensea Rarible etc. They make people opt for a leading company in building an NFT marketplace as themselves with all the facilities they provide. They are unique in their abilities, making people go for it. What do you know about is something different, and what they are is something vast. It would make them a way different from the ones being created.
The NFT development can be done in either way by developing it from scratch or using a whitelabel. Let us look into it.
➥ Scratch
NFT marketplace tend to bring unique significance and attributes within them. However, building them would make you wait as you have to develop them from scratch, including the design and other things that are needed to be included. Moreover, it would be a different experience to own a marketplace with all the abilities and gain what you deserve.
➥ Whitelabel
They are a market-ready product that can be customized as per your requirements and can be launched much earlier than you must have anticipated. They are cost-effective and can be trusted as they have specialized end-to-end security features. You can be happy to launch such a product in no time.
Hence, NFT Marketplace development can be made in any of the above ways. You can get help from leading companies who are best at those services and make you a successful entrepreneur in the upcoming years in NFTs.
1651383480
This serverless plugin is a wrapper for amplify-appsync-simulator made for testing AppSync APIs built with serverless-appsync-plugin.
Install
npm install serverless-appsync-simulator
# or
yarn add serverless-appsync-simulator
Usage
This plugin relies on your serverless yml file and on the serverless-offline
plugin.
plugins:
- serverless-dynamodb-local # only if you need dynamodb resolvers and you don't have an external dynamodb
- serverless-appsync-simulator
- serverless-offline
Note: Order is important serverless-appsync-simulator
must go before serverless-offline
To start the simulator, run the following command:
sls offline start
You should see in the logs something like:
...
Serverless: AppSync endpoint: http://localhost:20002/graphql
Serverless: GraphiQl: http://localhost:20002
...
Configuration
Put options under custom.appsync-simulator
in your serverless.yml
file
| option | default | description | | ------------------------ | -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------- | | apiKey | 0123456789
| When using API_KEY
as authentication type, the key to authenticate to the endpoint. | | port | 20002 | AppSync operations port; if using multiple APIs, the value of this option will be used as a starting point, and each other API will have a port of lastPort + 10 (e.g. 20002, 20012, 20022, etc.) | | wsPort | 20003 | AppSync subscriptions port; if using multiple APIs, the value of this option will be used as a starting point, and each other API will have a port of lastPort + 10 (e.g. 20003, 20013, 20023, etc.) | | location | . (base directory) | Location of the lambda functions handlers. | | refMap | {} | A mapping of resource resolutions for the Ref
function | | getAttMap | {} | A mapping of resource resolutions for the GetAtt
function | | importValueMap | {} | A mapping of resource resolutions for the ImportValue
function | | functions | {} | A mapping of external functions for providing invoke url for external fucntions | | dynamoDb.endpoint | http://localhost:8000 | Dynamodb endpoint. Specify it if you're not using serverless-dynamodb-local. Otherwise, port is taken from dynamodb-local conf | | dynamoDb.region | localhost | Dynamodb region. Specify it if you're connecting to a remote Dynamodb intance. | | dynamoDb.accessKeyId | DEFAULT_ACCESS_KEY | AWS Access Key ID to access DynamoDB | | dynamoDb.secretAccessKey | DEFAULT_SECRET | AWS Secret Key to access DynamoDB | | dynamoDb.sessionToken | DEFAULT_ACCESS_TOKEEN | AWS Session Token to access DynamoDB, only if you have temporary security credentials configured on AWS | | dynamoDb.* | | You can add every configuration accepted by DynamoDB SDK | | rds.dbName | | Name of the database | | rds.dbHost | | Database host | | rds.dbDialect | | Database dialect. Possible values (mysql | postgres) | | rds.dbUsername | | Database username | | rds.dbPassword | | Database password | | rds.dbPort | | Database port | | watch | - *.graphql
- *.vtl | Array of glob patterns to watch for hot-reloading. |
Example:
custom:
appsync-simulator:
location: '.webpack/service' # use webpack build directory
dynamoDb:
endpoint: 'http://my-custom-dynamo:8000'
Hot-reloading
By default, the simulator will hot-relad when changes to *.graphql
or *.vtl
files are detected. Changes to *.yml
files are not supported (yet? - this is a Serverless Framework limitation). You will need to restart the simulator each time you change yml files.
Hot-reloading relies on watchman. Make sure it is installed on your system.
You can change the files being watched with the watch
option, which is then passed to watchman as the match expression.
e.g.
custom:
appsync-simulator:
watch:
- ["match", "handlers/**/*.vtl", "wholename"] # => array is interpreted as the literal match expression
- "*.graphql" # => string like this is equivalent to `["match", "*.graphql"]`
Or you can opt-out by leaving an empty array or set the option to false
Note: Functions should not require hot-reloading, unless you are using a transpiler or a bundler (such as webpack, babel or typescript), un which case you should delegate hot-reloading to that instead.
Resource CloudFormation functions resolution
This plugin supports some resources resolution from the Ref
, Fn::GetAtt
and Fn::ImportValue
functions in your yaml file. It also supports some other Cfn functions such as Fn::Join
, Fb::Sub
, etc.
Note: Under the hood, this features relies on the cfn-resolver-lib package. For more info on supported cfn functions, refer to the documentation
You can reference resources in your functions' environment variables (that will be accessible from your lambda functions) or datasource definitions. The plugin will automatically resolve them for you.
provider:
environment:
BUCKET_NAME:
Ref: MyBucket # resolves to `my-bucket-name`
resources:
Resources:
MyDbTable:
Type: AWS::DynamoDB::Table
Properties:
TableName: myTable
...
MyBucket:
Type: AWS::S3::Bucket
Properties:
BucketName: my-bucket-name
...
# in your appsync config
dataSources:
- type: AMAZON_DYNAMODB
name: dynamosource
config:
tableName:
Ref: MyDbTable # resolves to `myTable`
Sometimes, some references cannot be resolved, as they come from an Output from Cloudformation; or you might want to use mocked values in your local environment.
In those cases, you can define (or override) those values using the refMap
, getAttMap
and importValueMap
options.
refMap
takes a mapping of resource name to value pairsgetAttMap
takes a mapping of resource name to attribute/values pairsimportValueMap
takes a mapping of import name to values pairsExample:
custom:
appsync-simulator:
refMap:
# Override `MyDbTable` resolution from the previous example.
MyDbTable: 'mock-myTable'
getAttMap:
# define ElasticSearchInstance DomainName
ElasticSearchInstance:
DomainEndpoint: 'localhost:9200'
importValueMap:
other-service-api-url: 'https://other.api.url.com/graphql'
# in your appsync config
dataSources:
- type: AMAZON_ELASTICSEARCH
name: elasticsource
config:
# endpoint resolves as 'http://localhost:9200'
endpoint:
Fn::Join:
- ''
- - https://
- Fn::GetAtt:
- ElasticSearchInstance
- DomainEndpoint
In some special cases you will need to use key-value mock nottation. Good example can be case when you need to include serverless stage value (${self:provider.stage}
) in the import name.
This notation can be used with all mocks - refMap
, getAttMap
and importValueMap
provider:
environment:
FINISH_ACTIVITY_FUNCTION_ARN:
Fn::ImportValue: other-service-api-${self:provider.stage}-url
custom:
serverless-appsync-simulator:
importValueMap:
- key: other-service-api-${self:provider.stage}-url
value: 'https://other.api.url.com/graphql'
This plugin only tries to resolve the following parts of the yml tree:
provider.environment
functions[*].environment
custom.appSync
If you have the need of resolving others, feel free to open an issue and explain your use case.
For now, the supported resources to be automatically resovled by Ref:
are:
Feel free to open a PR or an issue to extend them as well.
External functions
When a function is not defined withing the current serverless file you can still call it by providing an invoke url which should point to a REST method. Make sure you specify "get" or "post" for the method. Default is "get", but you probably want "post".
custom:
appsync-simulator:
functions:
addUser:
url: http://localhost:3016/2015-03-31/functions/addUser/invocations
method: post
addPost:
url: https://jsonplaceholder.typicode.com/posts
method: post
Supported Resolver types
This plugin supports resolvers implemented by amplify-appsync-simulator
, as well as custom resolvers.
From Aws Amplify:
Implemented by this plugin
#set( $cols = [] )
#set( $vals = [] )
#foreach( $entry in $ctx.args.input.keySet() )
#set( $regex = "([a-z])([A-Z]+)")
#set( $replacement = "$1_$2")
#set( $toSnake = $entry.replaceAll($regex, $replacement).toLowerCase() )
#set( $discard = $cols.add("$toSnake") )
#if( $util.isBoolean($ctx.args.input[$entry]) )
#if( $ctx.args.input[$entry] )
#set( $discard = $vals.add("1") )
#else
#set( $discard = $vals.add("0") )
#end
#else
#set( $discard = $vals.add("'$ctx.args.input[$entry]'") )
#end
#end
#set( $valStr = $vals.toString().replace("[","(").replace("]",")") )
#set( $colStr = $cols.toString().replace("[","(").replace("]",")") )
#if ( $valStr.substring(0, 1) != '(' )
#set( $valStr = "($valStr)" )
#end
#if ( $colStr.substring(0, 1) != '(' )
#set( $colStr = "($colStr)" )
#end
{
"version": "2018-05-29",
"statements": ["INSERT INTO <name-of-table> $colStr VALUES $valStr", "SELECT * FROM <name-of-table> ORDER BY id DESC LIMIT 1"]
}
#set( $update = "" )
#set( $equals = "=" )
#foreach( $entry in $ctx.args.input.keySet() )
#set( $cur = $ctx.args.input[$entry] )
#set( $regex = "([a-z])([A-Z]+)")
#set( $replacement = "$1_$2")
#set( $toSnake = $entry.replaceAll($regex, $replacement).toLowerCase() )
#if( $util.isBoolean($cur) )
#if( $cur )
#set ( $cur = "1" )
#else
#set ( $cur = "0" )
#end
#end
#if ( $util.isNullOrEmpty($update) )
#set($update = "$toSnake$equals'$cur'" )
#else
#set($update = "$update,$toSnake$equals'$cur'" )
#end
#end
{
"version": "2018-05-29",
"statements": ["UPDATE <name-of-table> SET $update WHERE id=$ctx.args.input.id", "SELECT * FROM <name-of-table> WHERE id=$ctx.args.input.id"]
}
{
"version": "2018-05-29",
"statements": ["UPDATE <name-of-table> set deleted_at=NOW() WHERE id=$ctx.args.id", "SELECT * FROM <name-of-table> WHERE id=$ctx.args.id"]
}
#set ( $index = -1)
#set ( $result = $util.parseJson($ctx.result) )
#set ( $meta = $result.sqlStatementResults[1].columnMetadata)
#foreach ($column in $meta)
#set ($index = $index + 1)
#if ( $column["typeName"] == "timestamptz" )
#set ($time = $result["sqlStatementResults"][1]["records"][0][$index]["stringValue"] )
#set ( $nowEpochMillis = $util.time.parseFormattedToEpochMilliSeconds("$time.substring(0,19)+0000", "yyyy-MM-dd HH:mm:ssZ") )
#set ( $isoDateTime = $util.time.epochMilliSecondsToISO8601($nowEpochMillis) )
$util.qr( $result["sqlStatementResults"][1]["records"][0][$index].put("stringValue", "$isoDateTime") )
#end
#end
#set ( $res = $util.parseJson($util.rds.toJsonString($util.toJson($result)))[1][0] )
#set ( $response = {} )
#foreach($mapKey in $res.keySet())
#set ( $s = $mapKey.split("_") )
#set ( $camelCase="" )
#set ( $isFirst=true )
#foreach($entry in $s)
#if ( $isFirst )
#set ( $first = $entry.substring(0,1) )
#else
#set ( $first = $entry.substring(0,1).toUpperCase() )
#end
#set ( $isFirst=false )
#set ( $stringLength = $entry.length() )
#set ( $remaining = $entry.substring(1, $stringLength) )
#set ( $camelCase = "$camelCase$first$remaining" )
#end
$util.qr( $response.put("$camelCase", $res[$mapKey]) )
#end
$utils.toJson($response)
Variable map support is limited and does not differentiate numbers and strings data types, please inject them directly if needed.
Will be escaped properly: null
, true
, and false
values.
{
"version": "2018-05-29",
"statements": [
"UPDATE <name-of-table> set deleted_at=NOW() WHERE id=:ID",
"SELECT * FROM <name-of-table> WHERE id=:ID and unix_timestamp > $ctx.args.newerThan"
],
variableMap: {
":ID": $ctx.args.id,
## ":TIMESTAMP": $ctx.args.newerThan -- This will be handled as a string!!!
}
}
Requires
Author: Serverless-appsync
Source Code: https://github.com/serverless-appsync/serverless-appsync-simulator
License: MIT License
1625892741
Be your Own Boss through building and developing your NFT Marketplace platform. BlockchainAppsDeveloper is a leading NFT Marketplace Development Company that offers NFT Marketplace Development Services that develop you build your own NFT Marketplace based on your desired business needs and requirements.
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For instance, land Infrastructure digitization in NFTs introduces land & architecture in virtual environments. NFTs’ significance within the Marketplace permits it to innovate multiple innovative services which are under research.
NFT Development Platform
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ERC-721
This ERC-721 standard is the Global Token Standard Exhibiting features and functionalities of fostering the NFTs over the Ethereum blockchain network. The ERC721 adds more value to the Uniqueness of the resources created and executed. The NFTs are developed with special uint256 token ID attributes and functinalities that are available worldwide.
ERC-998
This ERC-998 standard is an upgraded version of the accessible ERC721 Token. These ERC721 tokens are developed to supply consistency with ERC20 Tokens for their improved traceability and usability. The ERC998 token includes the composable characteristics to the token dveloped and created, the composable attribute total value of all collectibles.
ERC 1155
This ERC-1155 token might be a symbolic standard explicitly developed by the Enjin organization. ERC1155 token reqularly needs to create both fungible and non-fungible resources solely on the Ethereum Blockchain network determination close by Transaction completely packaging which is worth a token development.
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1648972740
Generis
Versatile Go code generator.
Generis is a lightweight code preprocessor adding the following features to the Go language :
package main;
// -- IMPORTS
import (
"html"
"io"
"log"
"net/http"
"net/url"
"strconv"
);
// -- DEFINITIONS
#define DebugMode
#as true
// ~~
#define HttpPort
#as 8080
// ~~
#define WriteLine( {{text}} )
#as log.Println( {{text}} )
// ~~
#define local {{variable}} : {{type}};
#as var {{variable}} {{type}};
// ~~
#define DeclareStack( {{type}}, {{name}} )
#as
// -- TYPES
type {{name}}Stack struct
{
ElementArray []{{type}};
}
// -- INQUIRIES
func ( stack * {{name}}Stack ) IsEmpty(
) bool
{
return len( stack.ElementArray ) == 0;
}
// -- OPERATIONS
func ( stack * {{name}}Stack ) Push(
element {{type}}
)
{
stack.ElementArray = append( stack.ElementArray, element );
}
// ~~
func ( stack * {{name}}Stack ) Pop(
) {{type}}
{
local
element : {{type}};
element = stack.ElementArray[ len( stack.ElementArray ) - 1 ];
stack.ElementArray = stack.ElementArray[ : len( stack.ElementArray ) - 1 ];
return element;
}
#end
// ~~
#define DeclareStack( {{type}} )
#as DeclareStack( {{type}}, {{type:PascalCase}} )
// -- TYPES
DeclareStack( string )
DeclareStack( int32 )
// -- FUNCTIONS
func HandleRootPage(
response_writer http.ResponseWriter,
request * http.Request
)
{
local
boolean : bool;
local
natural : uint;
local
integer : int;
local
real : float64;
local
escaped_html_text,
escaped_url_text,
text : string;
local
integer_stack : Int32Stack;
boolean = true;
natural = 10;
integer = 20;
real = 30.0;
text = "text";
escaped_url_text = "&escaped text?";
escaped_html_text = "<escaped text/>";
integer_stack.Push( 10 );
integer_stack.Push( 20 );
integer_stack.Push( 30 );
#write response_writer
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title><%= request.URL.Path %></title>
</head>
<body>
<% if ( boolean ) { %>
<%= "URL : " + request.URL.Path %>
<br/>
<%@ natural %>
<%# integer %>
<%& real %>
<br/>
<%~ text %>
<%^ escaped_url_text %>
<%= escaped_html_text %>
<%= "<%% ignored %%>" %>
<%% ignored %%>
<% } %>
<br/>
Stack :
<br/>
<% for !integer_stack.IsEmpty() { %>
<%# integer_stack.Pop() %>
<% } %>
</body>
</html>
#end
}
// ~~
func main()
{
http.HandleFunc( "/", HandleRootPage );
#if DebugMode
WriteLine( "Listening on http://localhost:HttpPort" );
#end
log.Fatal(
http.ListenAndServe( ":HttpPort", nil )
);
}
Constants and generic code can be defined with the following syntax :
#define old code
#as new code
#define old code
#as
new
code
#end
#define
old
code
#as new code
#define
old
code
#as
new
code
#end
The #define
directive can contain one or several parameters :
{{variable name}} : hierarchical code (with properly matching brackets and parentheses)
{{variable name#}} : statement code (hierarchical code without semicolon)
{{variable name$}} : plain code
{{variable name:boolean expression}} : conditional hierarchical code
{{variable name#:boolean expression}} : conditional statement code
{{variable name$:boolean expression}} : conditional plain code
They can have a boolean expression to require they match specific conditions :
HasText text
HasPrefix prefix
HasSuffix suffix
HasIdentifier text
false
true
!expression
expression && expression
expression || expression
( expression )
The #define
directive must not start or end with a parameter.
The #as
directive can use the value of the #define
parameters :
{{variable name}}
{{variable name:filter function}}
{{variable name:filter function:filter function:...}}
Their value can be changed through one or several filter functions :
LowerCase
UpperCase
MinorCase
MajorCase
SnakeCase
PascalCase
CamelCase
RemoveComments
RemoveBlanks
PackStrings
PackIdentifiers
ReplacePrefix old_prefix new_prefix
ReplaceSuffix old_suffix new_suffix
ReplaceText old_text new_text
ReplaceIdentifier old_identifier new_identifier
AddPrefix prefix
AddSuffix suffix
RemovePrefix prefix
RemoveSuffix suffix
RemoveText text
RemoveIdentifier identifier
Conditional code can be defined with the following syntax :
#if boolean expression
#if boolean expression
...
#else
...
#end
#else
#if boolean expression
...
#else
...
#end
#end
The boolean expression can use the following operators :
false
true
!expression
expression && expression
expression || expression
( expression )
Templated HTML code can be sent to a stream writer using the following syntax :
#write writer expression
<% code %>
<%@ natural expression %>
<%# integer expression %>
<%& real expression %>
<%~ text expression %>
<%= escaped text expression %>
<%! removed content %>
<%% ignored tags %%>
#end
--join
option requires to end the statements with a semicolon.#writer
directive is only available for the Go language.Install the DMD 2 compiler (using the MinGW setup option on Windows).
Build the executable with the following command line :
dmd -m64 generis.d
generis [options]
--prefix # : set the command prefix
--parse INPUT_FOLDER/ : parse the definitions of the Generis files in the input folder
--process INPUT_FOLDER/ OUTPUT_FOLDER/ : reads the Generis files in the input folder and writes the processed files in the output folder
--trim : trim the HTML templates
--join : join the split statements
--create : create the output folders if needed
--watch : watch the Generis files for modifications
--pause 500 : time to wait before checking the Generis files again
--tabulation 4 : set the tabulation space count
--extension .go : generate files with this extension
generis --process GS/ GO/
Reads the Generis files in the GS/
folder and writes Go files in the GO/
folder.
generis --process GS/ GO/ --create
Reads the Generis files in the GS/
folder and writes Go files in the GO/
folder, creating the output folders if needed.
generis --process GS/ GO/ --create --watch
Reads the Generis files in the GS/
folder and writes Go files in the GO/
folder, creating the output folders if needed and watching the Generis files for modifications.
generis --process GS/ GO/ --trim --join --create --watch
Reads the Generis files in the GS/
folder and writes Go files in the GO/
folder, trimming the HTML templates, joining the split statements, creating the output folders if needed and watching the Generis files for modifications.
2.0
Author: Senselogic
Source Code: https://github.com/senselogic/GENERIS
License: View license
1623645796
The non-fungible token marketplace development firm is outgrowing in the real world, creating many opportunities for upcoming investors to explore the benefits of tokenizing their collectibles into digital assets for future growth. Investors can connect with leading Infinite Block Tech to gain proper assistance towards NFT marketplace development cost-effectively.
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1623055270
The white label NFT marketplace development is becoming more popular in the digital world for investors to launch the solution and reap profits in less time quickly. The white-label solution for NFT marketplace development comes with customized features that best suit all business firms to experience safe and secure transactions. The NFT marketplace development is a worthy investment for investors to gain high returns in the future.
The White label NFT marketplace solution is a revenue-generating platform that benefits many users to tokenize their digital assets like art, music, and games into NFTs. It has automated smart contracts in the White label NFT platform that manages the overall operation of transactions without any loss. The NFT white label solution comes with well-structured, built using the latest blockchain technology.
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