PHP Microservices Framework

This is very light & easy Framework for Microservices. It can be used to create API's in very short time once you are done with your database.

Important Files

• .env.example Create a copy of this file as .env
• global.sql Import this SQL file on your MySQL global instance
• client\_master.sql Import this SQL file on your MySQL client instance
• cache.sql Import this SQL file for cache in MySQL cache instance if Redis is not the choice (To be configured in .env)

> Note: One can import all three sql's in a single database to start with. Just configure the same details in the .env file.

.env.example

Below are the configuration settings details in .env

• ENVIRONMENT=0 >Environment PRODUCTION = 1 / DEVELOPMENT = 0
• OUTPUT_PERFORMANCE_STATS=1 >Add Performance Stats in Json output: 1 = true / 0 = false
• allowConfigRequest=1 >Allow config request (global flag): 1 = true / 0 = false
• cronRestrictedIp='127.0.0.1' >Crons Details
• maxPerpage=10000 >Maximum value of perpage (records per page)

Cache Server Details (Redis)

• cacheType='Redis'
• cacheHostname='127.0.0.1'
• cachePort=6379
• cacheUsername='ramesh'
• cachePassword='shames11'
• cacheDatabase=0

Global Database details - global.sql

• globalType='MySQL'
• globalHostname='127.0.0.1'
• globalPort=3306
• globalUsername='root'
• globalPassword='shames11'
• globalDatabase='global'

global Database tables details

• groups='m002_master_groups'
• clients='m001_master_clients'

Default application database/server for clients

• defaultDbType='MySQL'
• defaultDbHostname='127.0.0.1'
• defaultDbPort=3306
• defaultDbUsername='root'
• defaultDbPassword='shames11'
• defaultDbDatabase='global'

Dedicated application database/server for client 1

• dbHostnameClient001='127.0.0.1'
• dbUsernameClient001='root'
• dbPasswordClient001='shames11'
• dbDatabaseClient001='client_001'

Dedicated application database/server for client 2

• dbHostnameClient002='127.0.0.1'
• dbUsernameClient002='root'
• dbPasswordClient002='shames11'
• dbDatabaseClient002='client_002'

Additional client database details

• clientMasterDbName='client_master' >contains all entities required for a new client.
• client_users='master_users' >Table in client database containing user details.

Folders

• App Basic Microservices application folder
• Config Basic Microservices configuration folder
• Crons Contains classes for cron API's
• Custom Contains classes for custom API's
• Dropbox Folder for uploaded files.
• public\_html Microservices doc root folder
• ThirdParty Contains classes for third-party API's
• Upload Contains classes for upload file API's
• Validation Contains validation classes.

Route Folder

• Config/Routes/<GroupName>

Files

• /GETroutes.php for all GET method routes configuration.
• /POSTroutes.php for all POST method routes configuration.
• /PUTroutes.php for all PUT method routes configuration.
• /PATCHroutes.php for all PATCH method routes configuration.
• /DELETEroutes.php for all DELETE method routes configuration.

<GroupName> assigned group to a user for accessing the API's

Example

• For configuring route /tableName/parts GET method
  return [
  'tableName' => [
      'parts' => [
          '__file__' => 'SQL file location'
      ]
  ]
  ];
  

• For configuring route /tableName/{id} where id is dynamic integer value to be collected.
  return [
  'tableName' => [
      '{id:int}' => [
          '__file__' => 'SQL file location'
      ]
  ]
  ];
  

• Same dynamic variable but with a different data type, for e.g. {id} will be treated differently for string and integer values to be collected.
  return [
  'tableName' => [
      '{id:int}' => [
          '__file__' => 'SQL file location for integer data type'
      ],
      '{id:string}' => [
          '__file__' => 'SQL file location for string data type'
      ]
  ]
  ];
  

• To restrict dynamic values to a certain set of values. One can do the same by appending comma-separated values after OR key.
  return [
  '{tableName:string|admin,group,client,routes}' => [
      '{id:int}' => [
          '__file__' => 'SQL file location'
      ]
  ]
  ];
  

• On other side; to exclude dynamic values. One can do the same by prefixing NOT(!) synbol to comma-separated values.
  return [
  '{tableName:string}' => [
      '{id:int|!0}' => [
          '__file__' => 'SQL file location'
      ]
  ]
  ];
  

  > This '{id:int|!0}' means id is integer but can't be zero.

Queries Folder

• Config/Queries/GlobalDB for global database.
• Config/Queries/ClientDB for Clients (including all hosts and their databases).

Files

• /GET/<filenames>.php GET method SQL.
• /POST/<filenames>;.php POST method SQL.
• /PUT/<filenames>.php PUT method SQL.
• /PATCH/<filenames>.php PATCH method SQL.
• /DELETE/<filenames>.php DELETE method SQL.

> One can replace <filenames> tag with desired name as per functionality.

Example

GET method.

• For Single row

return [
    'query' => "SELECT * FROM TableName WHERE id = ? AND group_id = ? AND client_id = ?",
    '__WHERE__' => [
        //column => [uriParams|payload|function|readOnlySession|{custom}, key|{value}]
        'id' => ['uriParams', 'id'],
        'group_id' => ['payload', 'group_id'],
        'client_id' => ['readOnlySession', 'client_id'],
    ],
    'mode' => 'singleRowFormat'                // Single row is returned.
];

• For Multiple rows

return [
    'query' => "SELECT * FROM TableName WHERE client_id = ?",
    '__WHERE__' => [
        //column => [uriParams|payload|function|readOnlySession|{custom}, key|{value}]
        'client_id' => ['readOnlySession', 'client_id'],
    ],
    'mode' => 'multipleRowFormat'            // Multiple rows are returned.
];

• For Mixed

return [
    'query' => "SELECT * FROM TableName WHERE id = ? AND group_id = ? AND client_id = ?",
    '__WHERE__' => [
        //column => [uriParams|payload|function|readOnlySession|{custom}, key|{value}]
        'id' => ['uriParams', 'id'],
        'group_id' => ['payload', 'group_id'],
        'client_id' => ['readOnlySession', 'client_id'],
    ],
    'mode' => 'singleRowFormat',            // Single row is returned.
    'subQuery' => [
        'Clients' => [
            'query' => "MySQL Query here",
            '__WHERE__' => [],
            'mode' => 'multipleRowFormat'    // Multiple rows are returned.
        ],
        ...
    ],
    'validate' => [
        [
            'fn' => 'validateGroupId',
            'fnArgs' => [
                'group_id' => ['payload', 'group_id']
            ],
            'errorMessage' => 'Invalid Group Id'
        ]
    ],
    ...
];

> Here query & mode keys are required keys

• For POST/PUT/PATCH/DELETE method.

return [
    'query' => "INSERT TableName SET SET WHERE WHERE ",
    // Fields present in below __CONFIG__ shall be supported for DB operation. Both Required and Optional
    '__CONFIG__' => [
        // Set your payload/uriParams fields config here.
        ['payload', 'group_id', Constants::$REQUIRED],    // Required field
        ['payload', 'password'],                        // Optional field
        ['payload', 'client_id'],                        // Optional field
    ],
    '__SET__' => [
        //column => [uriParams|payload|readOnlySession|insertIdParams|{custom}|function, key|{value}|function($conditions)],
        'group_id' => ['payload', 'group_id'],
        'password' => ['function', function($conditions) {
            return password_hash($conditions['payload']['password'], PASSWORD_DEFAULT);
        }],
        'client_id' => ['readOnlySession', 'client_id']
    ],
    '__WHERE__' => [
        // column => [uriParams|payload|function|readOnlySession|insertIdParams|{custom}, key|{value}
        'id' => ['uriParams', 'id']
    ],
    // Last insert id to be made available as $conditions['insertIdParams'][uniqueParamString];
    'insertId' => '<keyName>:id',
    'subQuery' => [
        'module1' => [
            'query' => "MySQL Query here",
            '__SET__' => [
                'previous_table_id' => ['insertIdParams', '<keyName>:id'],
            ],
            '__WHERE__' => [],
        ],
        ...
    ],
    'validate' => [
        [
            'fn' => 'validateGroupId',
            'fnArgs' => [
                'group_id' => ['payload', 'group_id']
            ],
            'errorMessage' => 'Invalid Group Id'
        ],
        ...
    ]
];

> Note: If there are modules or configurations repeated. One can reuse them by palcing them in a separate file and including as below.

'subQuery' => [
    //Here the module1 properties are reused for write operation.
    'module1' => include DOC_ROOT . 'Config/Queries/ClientDB/Common/reusefilename.php',
]

> Note: For POST, PUT, PATCH, and DELETE methods we can configure both INSERT as well as UPDATE queries.

HTTP Request

GET Request

• http://localhost/Microservices/public\_html/index.php?r=/reload
• http://localhost/Microservices/public\_html/index.php?r=/tableName/1

> One can clean the URL by making the required changes in the web server .conf file.

POST, PUT, PATCH, and DELETE Request

• Single

var payload = {
    "key1": "value1",
    "key2": "value2",
    ...
};

• Multiple

var payload = [
    {
        "key1": "value1",
        "key2": "value2",
        ...
    },
    {
        "key1": "value1",
        "key2": "value2",
        ...
    },
    ...
];

HttpRequest Variables

• $conditions\['readOnlySession'\] Session Data. > This remains same for every request and contains keys like id, group\_id, client\_id
• $conditions\['uriParams'\] Data passed in URI. > Suppose our configured route is /{table:string}/{id:int} and we make an HTTP request for /tableName/1 then $conditions\['uriParams'\] will hold these dynamic values as below.
• $conditions\['payload'\] Request data. > For GET method, the $\_GET is the payload.
• $conditions\['insertIdParams'\] Insert ids Data as per configuration. >For POST/PUT/PATCH/DELETE we perform both INSERT as well as UPDATE operation. The insertIdParams contains the insert ids of the executed INSERT queries.
• $conditions\['hierarchyData'\] Hierarchy data. >For GET method, one can use previous query results if configured to use hierarchy.

Hierarchy

• Config/Queries/ClientDB/GET/Category.php >In this file one can confirm how previous select data is used recursively in subQuery select as indicated by useHierarchy flag.

'parent_id' => ['hierarchyData', 'return:id'],

• Config/Queries/ClientDB/POST/Category.php .Here a request can handle the hierarchy for write operations.

return [
    'query' => "INSERT INTO `category` SET SET",
    '__CONFIG__' => [
        ['payload', 'name', Constants::$REQUIRED],
    ],
    '__SET__' => [
        'name' => ['payload', 'name'],
        'parent_id' => ['custom', 0],
    ],
    'insertId' => 'category:id',
    'subQuery' => [
        'module1' => [
            'query' => "INSERT INTO `category` SET SET",
            '__CONFIG__' => [
                ['payload', 'subname', Constants::$REQUIRED],
            ],
            '__SET__' => [
                'name' => ['payload', 'subname'],
                'parent_id' => ['insertIdParams', 'category:id'],
            ],
            'insertId' => 'sub:id',
        ]
    ],
    'useHierarchy' => true
];

Hierarchy Request

• Request - 1: Single object.

var payload = {
    "name":"name",
    "module1": {
        "subname":"subname",
    }
}

• Request - 2: Array of module1

var payload = {
    "name":"name",
    "module1":
    [
        {
            "subname":"subname1",
        },
        {
            "subname":"subname2",
        },
        ...
    ]
}

• Request - 3: Array of payload and arrays of module1

var payload = [
    {
        "name":"name1",
        "module1":
        [
            {
                "subname":"subname1",
            },
            {
                "subname":"subname2",
            },
            ...
        ]
    },
    {
        "name":"name2",
        "module1":
        [
            {
                "subname":"subname21",
            },
            {
                "subname":"subname22",
            },
            ...
        ]
    },
    ...
]

Route ending with /config

• Adding keyword config at the end of route after a slash returns the payload information that should be supplied; both required and optional with desired format.

Examples:

• r=/registration/config
• r=/category/config

One need to configure for same in route with a flag as config => true

Only these configured routes will be supported the config feature.

>For controlling globally there is a flag in env file labled allowConfigRequest

r=/routes

This lists down all allowed routes for HTTP methods respectively.

r=/check

Perform basic checks on Config folder.

Database

• Dedicated database for respective client can be configured
• This can also handle Master / Slave implementaion respectively

fetchFrom

• fetchFrom is a SQL config feature where one can force the fetch from Master (Since usually it is Slave)

Javascript - HTTP request example

Login

var handlerUrl = "http://api.client001.localhost/Microservices/public_html/index.php?r=/login";
var xmlhttp = new XMLHttpRequest();

xmlhttp . open( "POST", handlerUrl );
xmlhttp . setRequestHeader('Content-type', 'text/plain');

xmlhttp . onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        var responseJson = this.responseText;
        var responseArr = JSON.parse(responseJson);
        console.log(responseArr);
        var token = responseArr['Output']['Results']['Token'];
        console.log(token);
    }
};

var payload = {
    "username":"client_1_user_1",
    "password":"shames11"
};

xmlhttp . send( JSON.stringify(payload) );

For other API's

• GET Request

  var handlerUrl = "http://api.client001.localhost/Microservices/public_html/index.php?r=/routes";
  var xmlhttp = new XMLHttpRequest();

  xmlhttp . open( "GET", handlerUrl );
  xmlhttp . setRequestHeader('Authorization', 'Bearer <Token-from-login-api>');

  xmlhttp . onreadystatechange = function() {
      if (this.readyState == 4 && this.status == 200) {
          var responseJson = this.responseText;
          var responseArr = JSON.parse(responseJson);
          console.log(responseArr);
      }
  };

  xmlhttp . send();

• POST Request

var handlerUrl = "http://api.client001.localhost/Microservices/public_html/index.php?r=/ajax-handler-route";
var xmlhttp = new XMLHttpRequest();

xmlhttp . open( "POST", handlerUrl );
xmlhttp . setRequestHeader('Content-type', 'text/plain');
xmlhttp . setRequestHeader('Authorization', ?Bearer <Token-from-login-api>');

xmlhttp . onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        var responseJson = this.responseText;
        var responseArr = JSON.parse(responseJson);
        console.log(responseArr);
    }
};

var payload = {
    "key1": "value1",
    "key2": "value2",
};

xmlhttp . send( JSON.stringify(payload) );

• PUT Request

var handlerUrl = "http://api.client001.localhost/Microservices/public_html/index.php?r=/custom/password";
var xmlhttp = new XMLHttpRequest();

xmlhttp . open( "PUT", handlerUrl );
xmlhttp . setRequestHeader('Content-type', 'text/plain');
xmlhttp . setRequestHeader('Authorization', ?Bearer <Token-from-login-api>');

xmlhttp . onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
        var responseJson = this.responseText;
        var responseArr = JSON.parse(responseJson);
        console.log(responseArr);
    }
};

var payload = {
    "old_password": "shames11",
    "new_password": "ramesh",
};

xmlhttp . send( JSON.stringify(payload) );