Class: Mongo::Server::AppMetadata Private

Do not use. This class is for internal use only.

Relationships & Source Files
Namespace Children
Classes: `Environment`, `Platform`, `Truncator`
Extension / Inclusion / Inheritance Descendants
Subclasses: Mongo::Server::Monitor::AppMetadata
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, Forwardable
Inherits:	Object
Defined in:	lib/mongo/server/app_metadata.rb, lib/mongo/server/app_metadata/environment.rb, lib/mongo/server/app_metadata/platform.rb, lib/mongo/server/app_metadata/truncator.rb

Overview

Application metadata that is sent to the server during a handshake,

when a new connection is established.

Since:

2.0.0

Constant Summary

AUTH_OPTION_KEYS =

Option keys that affect auth mechanism negotiation.
Since:
- 2.0.0
# File 'lib/mongo/server/app_metadata.rb', line 37
```
%i[ user auth_source auth_mech].freeze
```
DRIVER_NAME =

The driver name.
Since:
- 2.0.0
# File 'lib/mongo/server/app_metadata.rb', line 34
```
'mongo-ruby-driver'
```
MAX_APP_NAME_SIZE =

The max application name byte size.
Since:
- 2.0.0
# File 'lib/mongo/server/app_metadata.rb', line 31
```
128
```
PURPOSES =

Possible connection purposes.
Since:
- 2.0.0
# File 'lib/mongo/server/app_metadata.rb', line 40
```
%i[ application monitor push_monitor ].freeze
```

Class Method Summary

.new(options = {}) ⇒ AppMetadata constructor Internal use only

Instantiate the new AppMetadata object.

Instance Attribute Summary

#platform ⇒ String readonly Internal use only
#purpose ⇒ Symbol readonly Internal use only
#server_api ⇒ Hash | nil readonly Internal use only
#wrapping_libraries ⇒ Array<Hash> | nil readonly Internal use only

Instance Method Summary

#client_document ⇒ BSON::Document Internal use only

Get BSON::Document to be used as value for client key in handshake document.
#validated_document ⇒ BSON::Document Internal use only

Get the metadata as BSON::Document to be sent to as part of the handshake.
#architecture private Internal use only
#check_purpose!(purpose) ⇒ String | nil private Internal use only

Verifies that the given purpose is either nil, or is one of the allowed purposes.
#document ⇒ BSON::Document private Internal use only

Get the metadata as BSON::Document to be sent to as part of the handshake.
#driver_doc private Internal use only
#env_doc ⇒ Hash | nil private Internal use only

Returns the environment doc describing the current execution environment.
#name private Internal use only
#os_doc private Internal use only
#platform_string private Internal use only
#type private Internal use only
#validate! private Internal use only

Check whether it is possible to build a valid app metadata document with params provided on intialization.

Instance Attribute Details

#platform ⇒ `String` (readonly)

Returns:

(String) —

The platform information given when the object was instantiated.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 96


attr_reader :platform

#purpose ⇒ Symbol (readonly)

Returns:

(Symbol) —

The purpose of the connection for which this app metadata is created.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 92


attr_reader :purpose

#server_api ⇒ `Hash` | `nil` (readonly)

Returns:

(Hash | nil) —
The requested server API version.

Thes hash can have the following items:
- :version – string
- :strict – boolean
- :deprecation_errors – boolean

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 104


attr_reader :server_api

#wrapping_libraries ⇒ `Array`<`Hash`> | `nil` (readonly)

Returns:

(Array<Hash> | nil) —

Information about libraries wrapping the driver.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 108


attr_reader :wrapping_libraries

Instance Method Details

#architecture (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 212


def architecture
  RbConfig::CONFIG['target_cpu']
end

#check_purpose!(purpose) ⇒ `String` | `nil` (private)

Verifies that the given purpose is either nil, or is one of the allowed purposes.

Parameters:

purpose (String | nil) —

The purpose to validate

Returns:

(String | nil) —

the {purpose} argument

Raises:

(ArgumentError) —

if the purpose is invalid

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 228


def check_purpose!(purpose)
  return purpose unless purpose && !PURPOSES.include?(purpose)

  raise ArgumentError, "Invalid purpose: #{purpose}"
end

#client_document ⇒ `BSON::Document`

Get BSON::Document to be used as value for client key in handshake document.

Returns:

(BSON::Document) —

Document describing client for handshake.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 128


def client_document
  @client_document ||=
    BSON::Document.new.tap do |doc|
      doc[:application] = { name: @app_name } if @app_name
      doc[:driver] = driver_doc
      doc[:os] = os_doc
      doc[:platform] = platform_string
      env_doc.tap { |env| doc[:env] = env if env }
    end
end

#document ⇒ `BSON::Document` (private)

Get the metadata as BSON::Document to be sent to as part of the handshake. The document should be appended to a suitable handshake command.

Returns:

(BSON::Document) —

Document for connection’s handshake.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 158


def document
  @document ||= begin
    client = Truncator.new(client_document).document
    BSON::Document.new(compression: @compressors, client: client).tap do |doc|
      doc[:saslSupportedMechs] = @request_auth_mech if @request_auth_mech
      doc.update(Utils.transform_server_api(@server_api)) if @server_api
    end
  end
end

#driver_doc (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 168


def driver_doc
  names = [ DRIVER_NAME ]
  versions = [ Mongo::VERSION ]
  wrapping_libraries&.each do |library|
    names << (library[:name] || '')
    versions << (library[:version] || '')
  end

  {
    name: names.join('|'),
    version: versions.join('|'),
  }
end

#env_doc ⇒ `Hash` | `nil` (private)

Returns the environment doc describing the current execution environment.

Returns:

(Hash | nil) —

the environment doc (or nil if no relevant environment info was detected)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 195


def env_doc
  env = Environment.new
  env.present? ? env.to_h : nil
end

#name (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 208


def name
  RbConfig::CONFIG['host_os']
end

#os_doc (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 182


def os_doc
  {
    type: type,
    name: name,
    architecture: architecture,
  }
end

#platform_string (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 216


def platform_string
  Platform.new(self).to_s
end

#type (private)

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 200


def type
  if RbConfig::CONFIG && RbConfig::CONFIG['host_os']
    RbConfig::CONFIG['host_os'].split('_').first[/[a-z]+/i].downcase
  else
    'unknown'
  end
end

#validate! (private)

Check whether it is possible to build a valid app metadata document with params provided on intialization.

Raises:

(Error::InvalidApplicationName) —

When the metadata are invalid.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 145


def validate!
  if @app_name && @app_name.bytesize > MAX_APP_NAME_SIZE
    raise Error::InvalidApplicationName.new(@app_name, MAX_APP_NAME_SIZE)
  end

  true
end

#validated_document ⇒ `BSON::Document`

Get the metadata as BSON::Document to be sent to as part of the handshake. The document should be appended to a suitable handshake command.

This method ensures that the metadata are valid.

Returns:

(BSON::Document) —

Valid document for connection’s handshake.

Raises:

(Error::InvalidApplicationName) —

When the metadata are invalid.

Since:

2.0.0

[ GitHub ]

# File 'lib/mongo/server/app_metadata.rb', line 119


def validated_document
  validate!
  document
end

Class: Mongo::Server::AppMetadata Private

Overview

Constant Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Instance Attribute Details

#platform ⇒ String (readonly)

#purpose ⇒ Symbol (readonly)

#server_api ⇒ Hash | nil (readonly)

#wrapping_libraries ⇒ Array<Hash> | nil (readonly)

Instance Method Details

#architecture (private)

#check_purpose!(purpose) ⇒ String | nil (private)

#client_document ⇒ BSON::Document

#document ⇒ BSON::Document (private)

#driver_doc (private)

#env_doc ⇒ Hash | nil (private)

#name (private)

#os_doc (private)

#platform_string (private)

#type (private)

#validate! (private)

#validated_document ⇒ BSON::Document

#platform ⇒ `String` (readonly)

#server_api ⇒ `Hash` | `nil` (readonly)

#wrapping_libraries ⇒ `Array`<`Hash`> | `nil` (readonly)

#check_purpose!(purpose) ⇒ `String` | `nil` (private)

#client_document ⇒ `BSON::Document`

#document ⇒ `BSON::Document` (private)

#env_doc ⇒ `Hash` | `nil` (private)

#validated_document ⇒ `BSON::Document`