SqlConnection Model
- class smarter.apps.connection.models.SqlConnection(*args, **kwargs)[source]
Bases:
ConnectionBaseStores SQL connection configuration.
This model defines the connection details for a SQL database, including database engine, authentication method, host, port, credentials, SSL/TLS, and proxy settings. It provides methods for establishing connections using various authentication methods (TCP/IP, SSH, LDAP), executing queries, and validating the connection.
SqlConnectionis a concrete subclass ofConnectionBaseand is referenced byPluginDataSqlto provide the database connection. It supports advanced features such as connection pooling, SSL configuration, SSH tunneling, and proxy authentication, enabling secure and flexible integration with a wide range of SQL databases.- This model is responsible for:
Managing connection credentials and secrets using the
Secretmodel.Constructing Django-compatible database connection settings and connection strings.
Providing methods for testing connectivity, executing SQL queries, and handling connection errors.
Supporting multiple authentication methods, including TCP/IP, SSH tunneling, and LDAP.
Integrating with Django’s database backend and connection pooling mechanisms.
Emitting signals for connection attempts, successes, failures, and query events for observability.
Typical use cases include plugins that need to query organizational databases, perform analytics, or retrieve structured data from remote SQL servers as part of the Smarter plugin ecosystem.
See also:
ConnectionBasePluginDataSqlsmarter.apps.account.models.Secret
- Parameters:
id (Unknown) – Primary key: ID
created_at (Unknown) – Created at
updated_at (Unknown) – Updated at
name (Unknown) – Name. Name in camelCase, e.g., ‘apiKey’, no special characters.
description (Unknown) – Description. A brief description of this resource. Be verbose, but not too verbose.
version (Unknown) – Version. Semantic version in the format MAJOR.MINOR.PATCH, e.g., ‘1.0.0’.
annotations (Unknown) – Annotations. Key-value pairs for annotating this resource.
kind (Unknown) – Kind. The kind of connection. Example: ‘SQL’, ‘API’.
db_engine (Unknown) –
Db engine. The type of database management system. Example: ‘MySQL’, ‘PostgreSQL’, ‘MS SQL Server’, ‘Oracle’.
The type of database management system.
Example: ‘MySQL’, ‘PostgreSQL’, ‘MS SQL Server’, ‘Oracle’.
authentication_method (Unknown) –
Authentication method. The authentication method to use for the connection. Example: ‘Standard TCP/IP’, ‘Standard TCP/IP over SSH’, ‘LDAP User/Password’.
The authentication method to use for the connection.
Example: ‘Standard TCP/IP’, ‘Standard TCP/IP over SSH’, ‘LDAP User/Password’.
timeout (Unknown) –
Timeout. The timeout for the database connection in seconds. Default is 30 seconds.
The timeout for the database connection in seconds.
Default is 30 seconds.
use_ssl (Unknown) –
Use ssl. Whether to use SSL/TLS for the connection.
Whether to use SSL/TLS for the connection.
ssl_cert (Unknown) – Ssl cert. The SSL certificate for the connection, if required.
ssl_key (Unknown) – Ssl key. The SSL key for the connection, if required.
ssl_ca (Unknown) –
Ssl ca. The Certificate Authority (CA) certificate for verifying the server.
The SSL certificate for the connection, if required.
The SSL key for the connection, if required. The Certificate Authority (CA) certificate for verifying the server.
hostname (Unknown) –
Hostname. The remote host of the SQL connection. Should be a valid internet domain name.
The remote host of the SQL connection.
Should be a valid internet domain name.
port (Unknown) –
Port. The port of the SQL connection. example: 3306 for MySQL.
The port of the SQL connection.
example: 3306 for MySQL. 5432 for PostgreSQL, 1521 for Oracle, 1433 for MS SQL Server. 5000 for Sybase. 1234 for SQLite (not commonly used). 3306 is a reasonable default as MySQL is widely used. 5432 could also be a reasonable default as PostgreSQL is also widely used.
database (Unknown) –
Database. The name of the database to connect to.
The name of the database to connect to.
username (Unknown) –
Username. The database username.
The database username.
pool_size (Unknown) –
Pool size. The size of the connection pool.
The size of the connection pool.
max_overflow (Unknown) –
Max overflow. The maximum number of connections to allow beyond the pool size.
The maximum number of connections to allow beyond the pool size.
proxy_protocol (Unknown) –
Proxy protocol. The protocol to use for the proxy connection.
The protocol to use for the proxy connection.
proxy_host (Unknown) –
Proxy host. The remote host of the SQL proxy connection. Should be a valid internet domain name.
The remote host of the SQL proxy connection.
Should be a valid internet domain name.
proxy_port (Unknown) –
Proxy port. The port of the SQL proxy connection.
The port of the SQL proxy connection.
8080 is a common default for HTTP proxies. 3128 is another common default for HTTP proxies. 1080 is a common default for SOCKS proxies. 8080 is a reasonable default as it is widely used for HTTP proxies.
proxy_username (Unknown) –
Proxy username. The username for the proxy connection.
The username for the proxy connection.
ssh_known_hosts (Unknown) –
Ssh known hosts. The known_hosts file content for verifying SSH connections. Usually comes from ~/.ssh/known_hosts.
The known_hosts file content for verifying SSH connections.
Usually comes from ~/.ssh/known_hosts.
Relationship fields:
- Parameters:
user_profile (Unknown) – User profile (related name:
connectionbase)tags (Unknown) – Tags. Tags for categorizing and organizing this resource. (related name:
connectionbase)connectionbase_ptr (Unknown) – Primary key: Connectionbase ptr (related name:
sqlconnection)password (Unknown) –
Password. The password for authentication, if required. (related name:
sql_connections_password)The password for authentication, if required.
See:
smarter.apps.account.models.Secretproxy_password (Unknown) –
Proxy password. The API key for authentication, if required. (related name:
sql_connections_proxy_password)The password for the proxy connection, if required.
See:
smarter.apps.account.models.Secrettagged_items (Unknown) – Tagged items (related name:
+)
Reverse relationships:
- Parameters:
plugin_data_sql_connection (Unknown) – All plugin data sql connection of this SQL Connection (related name of
connection)
- CONNECTION_KIND_CHOICES = [('SqlConnection', 'SqlConnection'), ('ApiConnection', 'ApiConnection')]
- DBMS_AUTHENITCATION_METHODS = [('none', 'None'), ('tcpip', 'Standard TCP/IP'), ('tcpip_ssh', 'Standard TCP/IP over SSH'), ('ldap_user_pwd', 'LDAP User/Password')]
The supported authentication methods for SQL connections.
- DBMS_CHOICES = [('django.db.backends.mysql', 'django.db.backends.mysql'), ('django.db.backends.postgresql', 'django.db.backends.postgresql'), ('django.db.backends.sqlite3', 'django.db.backends.sqlite3'), ('django.db.backends.oracle', 'django.db.backends.oracle'), ('django.db.backends.mssql', 'django.db.backends.mssql'), ('django.db.backends.sybase', 'django.db.backends.sybase')]
The supported database management systems (DBMS) for SQL connections.
- DBMS_DEFAULT_TIMEOUT = 30
The default timeout for database connections in seconds.
30 seconds is a reasonable default that balances responsiveness with network latency.
- exception DoesNotExist
Bases:
DoesNotExist- __init__(*args, **kwargs)
- add_note(object, /)
Exception.add_note(note) – add a note to the exception
- args
- silent_variable_failure = True
- with_traceback(object, /)
Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.
- HASH_FLOOR = 1000000
- HASH_PREFIX = 'r'
- HASH_SUFFIX = 'x'
- exception MultipleObjectsReturned
Bases:
MultipleObjectsReturned- __init__(*args, **kwargs)
- add_note(object, /)
Exception.add_note(note) – add a note to the exception
- args
- with_traceback(object, /)
Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.
- exception NotUpdated
Bases:
NotUpdated- __init__(*args, **kwargs)
- add_note(object, /)
Exception.add_note(note) – add a note to the exception
- args
- with_traceback(object, /)
Exception.with_traceback(tb) – set self.__traceback__ to tb and return self.
- class ParamikoUpdateKnownHostsPolicy(sql_connection)[source]
Bases:
MissingHostKeyPolicyCustom Paramiko policy to automatically add missing SSH host keys to the known_hosts field.
This policy extends Paramiko’s MissingHostKeyPolicy to handle unknown host keys by appending them to the
ssh_known_hostsfield of the associatedSqlConnectionmodel instance. When an unknown host key is encountered during an SSH connection attempt, this policy captures the key and updates the database record accordingly.
- __init__(*args, **kwargs)
- async adelete(using=None, keep_parents=False)
- apiconnection
Reverse
OneToOneFieldfromApiConnectionThe API Connection of this connection base (related name of
connectionbase_ptr)- Type:
Type
- async arefresh_from_db(using=None, fields=None, from_queryset=None)
- async asave(*, force_insert=False, force_update=False, using=None, update_fields=None)
- authentication_method
-
Authentication method. The authentication method to use for the connection. Example: ‘Standard TCP/IP’, ‘Standard TCP/IP over SSH’, ‘LDAP User/Password’.
Choices:
nonetcpiptcpip_sshldap_user_pwd
The authentication method to use for the connection.
Example: ‘Standard TCP/IP’, ‘Standard TCP/IP over SSH’, ‘LDAP User/Password’.
- Type:
Type
- bool_environment_variable(var_name, default=False)
Retrieves a boolean value from an environment variable.
This method checks the specified environment variable and returns its value as a boolean. It recognizes common truthy values such as “true”, “1”, “yes”, and “on”. If the variable is not set or cannot be interpreted as a boolean, it returns the provided default value.
- cache_expiration = 60
- classmethod check(**kwargs)
- clean()
Hook for doing any extra model-wide validation after clean() has been called on every field by self.clean_fields. Any ValidationError raised by this method will not be associated with a particular field; it will have a special-case association with the field defined by NON_FIELD_ERRORS.
- clean_fields(exclude=None)
Clean all fields and raise a ValidationError containing a dict of all validation errors if any occur.
- clone(new_name=None, new_version=None, user_profile=None)
Create a clone of this instance with a new name, version, and/or user profile.
- Parameters:
new_name (
Optional[str]) – The name for the cloned instance. If not provided, the original name will be suffixed with “ (clone)”.new_version (
Optional[str]) – The version for the cloned instance. If not provided, the original version will be used.user_profile (
Optional[UserProfile]) – The user profile for the cloned instance. If not provided, the original user profile will be used.
- Returns:
A new instance of MetaDataWithOwnershipModel that is a clone of this instance with the specified changes.
- Return type:
- close()[source]
Close the database connection.
This method closes the current database connection associated with this SQL connection instance, if it exists. If an error occurs while closing the connection, it is logged and the connection reference is cleared.
- Returns:
None
- connect_ldap_user_pwd()[source]
Establish a database connection using LDAP User/Password authentication.
This method attempts to create and validate a database connection using LDAP User/Password authentication, based on the current SQL connection instance’s configuration. It emits signals for connection attempts, successes, and failures for observability.
- Returns:
The database connection object if successful, otherwise None.
- Return type:
Optional[BaseDatabaseWrapper]
- connect_tcpip()[source]
Establish a test database connection using Standard TCP/IP.
This method attempts to create and validate a database connection using the standard TCP/IP authentication method, based on the current SQL connection instance’s configuration. It emits signals for connection attempts, successes, and failures for observability.
- Returns:
The database connection object if successful, otherwise None.
- Return type:
Optional[BaseDatabaseWrapper]
Example:
db_wrapper = sql_connection.connect_tcpip() if db_wrapper: # Connection established, use db_wrapper... pass
See also:
django.db.utils.ConnectionHandler()
- connect_tcpip_ssh()[source]
Establish a database connection using Standard TCP/IP over SSH with Paramiko.
This method attempts to create and validate a database connection using the standard TCP/IP authentication method over an SSH tunnel, based on the current SQL connection instance’s configuration. It emits signals for connection attempts, successes, and failures for observability.
- Returns:
The database connection object if successful, otherwise None.
- Return type:
Optional[BaseDatabaseWrapper]
- property connection: BaseDatabaseWrapper | None
Return the database connection if it exists, otherwise create a new one.
This property returns the current database connection for this SQL connection instance. If a connection has already been established, it is returned; otherwise, a new connection is created using the configured authentication method and connection parameters.
- Returns:
The database connection object, or None if the connection could not be established.
- Return type:
Optional[BaseDatabaseWrapper]
Example:
conn = sql_connection.connection if conn: # Use the database connection ...
See also:
- property connection_string: str
Return the database connection string.
This property constructs and returns a database connection string based on the current SQL connection instance’s configuration.
- Returns:
A database connection string.
- Return type:
- connectionbase_ptr
OneToOneFieldtoConnectionBasePrimary key: Connectionbase ptr (related name:
sqlconnection)- Type:
Type
- connectionbase_ptr_id
Internal field, use
connectionbase_ptrinstead.
- created_at
-
Created at
Timestamp indicating when the model instance was created.
This field is automatically set to the current date and time when the instance is first created. It is indexed in the database for efficient querying.
- Type:
Type
- data_to_dict(data)
Converts data to a dictionary, handling different types of input.
This method accepts either a dictionary or a string. If a string is provided, it will attempt to parse it as JSON first, and if that fails, as YAML. If parsing fails or the data type is unsupported, a SmarterValueError is raised.
- database
-
Database. The name of the database to connect to.
The name of the database to connect to.
- Type:
Type
- date_error_message(lookup_type, field_name, unique_for)
- db_engine
-
Db engine. The type of database management system. Example: ‘MySQL’, ‘PostgreSQL’, ‘MS SQL Server’, ‘Oracle’.
Choices:
django.db.backends.mysqldjango.db.backends.postgresqldjango.db.backends.sqlite3django.db.backends.oracledjango.db.backends.mssqldjango.db.backends.sybase
The type of database management system.
Example: ‘MySQL’, ‘PostgreSQL’, ‘MS SQL Server’, ‘Oracle’.
- Type:
Type
- property db_options: dict
Return the database connection options.
This property constructs and returns a dictionary of options for the database connection, including SSL/TLS settings and authentication method if applicable.
If SSL is enabled (
use_sslis True), the returned dictionary includes the keysca,cert, andkeyfor SSL configuration.If the authentication method is LDAP user/password, the dictionary includes an
authenticationkey set toLDAP.
- Returns:
A dictionary of database connection options.
- Return type:
Example:
options = sql_connection.db_options # returns: {'ssl': {'ca': '...', 'cert': '...', 'key': '...'}, 'authentication': 'LDAP'}
- delete(using=None, keep_parents=False)
- description
-
Description. A brief description of this resource. Be verbose, but not too verbose.
- Type:
Type
- deserves_amnesty(slug)
Determines if a given URL deserves amnesty based on the amnesty URLs list.
This excuses certain endpoints (like health checks) from select middleware checks.
- dict_is_contained_in(dict1, dict2)
Checks if one dictionary is contained within another.
This method determines if all key-value pairs in dict1 are present in dict2.
- dict_is_subset(small, big)
Checks if one dictionary is a subset of another.
This method determines if all key-value pairs in the small dictionary are present in the big dictionary. It returns True if the small dictionary is a subset of the big dictionary, and False otherwise.
- property django_db_connection: dict
Return the database connection settings for Django.
This property constructs and returns a dictionary of settings compatible with Django’s database connection handler, using the current SQL connection instance’s configuration.
The returned dictionary includes the following keys:
ENGINE: The database backend engine (e.g.,django.db.backends.mysql).NAME: The name of the database.USER: The database username.PASSWORD: The password for authentication, if set.HOST: The database host.PORT: The database port as a string.OPTIONS: Additional database connection options (such as SSL or authentication settings).
- Returns:
A dictionary of Django database connection settings.
- Return type:
Example:
settings = sql_connection.django_db_connection # returns: # { # "ENGINE": "django.db.backends.mysql", # "NAME": "mydb", # "USER": "myuser", # "PASSWORD": "mypassword", # "HOST": "localhost", # "PORT": "3306", # "OPTIONS": {...} # }
- property elapsed_updated: int | None
Calculate the absolute time difference in seconds between a given datetime and the model’s
updated_attimestamp.This property is useful for determining how much time has elapsed since the model instance was last updated, or for comparing the
updated_atfield to any arbitrary datetime.Parameters:
dt (datetime, optional): The reference datetime to compare against
updated_at. - Ifdtis not provided, the current time is used. - Both naive and timezone-aware datetime objects are supported; the method will handle conversions as needed.
Returns:
int or None: The absolute difference in seconds between
updated_atanddt. ReturnsNoneifupdated_atis not set.
Example Usage:
obj = MyModel.objects.get(pk=1) # Time since last update seconds = obj.elapsed_updated print(f"Seconds since last update: {seconds}") # Compare to a specific datetime import datetime dt = datetime.datetime(2025, 12, 1, 12, 0, 0) diff = obj.elapsed_updated(dt) print(f"Seconds between updated_at and 2025-12-01 12:00:00: {diff}")
Note
Handles both naive and aware datetime objects, converting as necessary to ensure accurate calculation.
If
updated_atis not set (e.g., the object has not been saved), returnsNone.
Attention
If
dtis provided and is not adatetime.datetimeinstance, aTypeErrorwill be raised.Always ensure that
updated_atis set before relying on this property for calculations.
- execute_query(sql, limit=None)[source]
Execute a SQL query and return the results as a JSON string.
- Parameters:
- Return type:
- Returns:
JSON string of query results if successful, otherwise False.
Warning
This method does not perform any SQL injection protection or parameterization. It is the caller’s responsibility to ensure that the SQL query is safe and properly formatted.
Warning
This method does not limit the execution time nor the number of rows returned by the query, unless the
limitparameter is provided. It is the caller’s responsibility to ensure that the query is efficient and does not return excessive data.
- classmethod find_hash(value)
Finds and returns the first substring in the given value that matches.
the hashed ID format.
- property formatted_class_name: str
Returns the class name formatted for logging.
- Returns:
The formatted class name as a string.
- Return type:
- formatted_json(json_obj)
Formats a JSON object as a pretty-printed string with ANSI color codes for logging.
- property formatted_state_not_ready: str
Returns the not-ready state formatted for logging.
- Returns:
The formatted not-ready state as a string.
- Return type:
- property formatted_state_ready: str
Returns the readiness state formatted for logging.
- Returns:
The formatted readiness state as a string.
- Return type:
- formatted_text(text, color_code='\\x1b[1;31m')
Formats text with ANSI color codes for logging.
- formatted_text_blue(text)
Formats text in bold dark blue for logging.
- formatted_text_green(text)
Formats text in bright green for logging.
- formatted_text_red(text)
Formats text in dark red for logging.
- classmethod from_db(db, field_names, values)
- full_clean(exclude=None, validate_unique=True, validate_constraints=True)
Call clean_fields(), clean(), validate_unique(), and validate_constraints() on the model. Raise a ValidationError for any errors that occur.
- generate_fernet_encryption_key()
Generates a Fernet encryption key.
This method creates a new Fernet encryption key, which can be used for secure encryption and decryption of data. The generated key is returned as a URL-safe base64-encoded string.
- Returns:
A new Fernet encryption key.
- Return type:
- get_authentication_method_display(*, field=<django.db.models.CharField: authentication_method>)
Shows the label of the
authentication_method. Seeget_FOO_display()for more information.
- classmethod get_cached_connections_for_user(user, invalidate=False)
Return a list of all instances of all concrete subclasses of
ConnectionBase.This method retrieves all connection objects (such as
SqlConnectionandApiConnection) associated with the user’s account, across all concrete subclasses ofConnectionBase. It is useful for enumerating all available connections for a given user, regardless of connection type.- Parameters:
user (
User) – The user whose connections should be retrieved.- Returns:
A list of all connection instances for the user’s account.
- Return type:
list[ConnectionBase]
Example:
connections = ConnectionBase.get_cached_connections_for_user(user) # returns [<SqlConnection ...>, <ApiConnection ...>, ...]
See also:
- classmethod get_cached_object(*args, invalidate=False, pk=None, name=None, user=None, user_profile=None, username=None, account=None, session_key=None, taggit=True, **kwargs)
Retrieve a model instance using caching to optimize performance.
Examples of retrieval patterns:
# By primary key instance = MyModel.get_cached_object(pk=123) # By name and user profile instance = MyModel.get_cached_object(name="Resource Name", user_profile=user_profile) # By name and account instance = MyModel.get_cached_object(name="Resource Name", account=account)
- Parameters:
pk (
Optional[int]) – The primary key of the model instance to retrieve.name (
Optional[str]) – The name of the model instance to retrieve.user (
Optional[User]) – The user associated with the model instance.user_profile (
Optional[UserProfile]) – The user profile associated with the model instance.account (
Optional[Account]) – The account associated with the model instance.invalidate (
Optional[bool]) – Whether to invalidate the cache for this retrieval.
- Returns:
The model instance if found, otherwise raises
DoesNotExist.- Return type:
- classmethod get_cached_objects(invalidate=False, user_profile=None, taggit=True, **kwargs)
Retrieve a list of MetaDataWithOwnershipModel instances associated with a user profile using caching.
Example usage:
# Retrieve MetaDataWithOwnershipModel instances for a user profile with caching models = MetaDataWithOwnershipModel.get_cached_objects(my_user_profile, invalidate=invalidate)
- Parameters:
invalidate (
Optional[bool]) – Whether to invalidate the cache for this retrieval.user_profile (
Optional[UserProfile]) – The user profile for which to retrieve MetaDataWithOwnershipModel instances.
- Returns:
A queryset of MetaDataWithOwnershipModel instances associated with the user profile.
- Return type:
- get_connection()[source]
Establish a database connection based on the authentication method.
This method attempts to establish a database connection using the configured authentication method for this SQL connection instance. The authentication method can be standard TCP/IP, TCP/IP over SSH, LDAP user/password, or none. Returns the database connection object if successful, otherwise None.
- Returns:
The database connection object if successful, otherwise None.
- Return type:
Optional[BaseDatabaseWrapper]
- get_connection_string(masked=True)[source]
Return the connection string.
This method constructs and returns a database connection string based on the current connection instance’s configuration. If
maskedis True, sensitive information such as the password or API key will be masked in the returned string.- Parameters:
masked (
bool) – Whether to mask sensitive information in the connection string.- Returns:
The constructed connection string.
- Return type:
Example:
conn_str = sql_connection.get_connection_string(masked=True) # returns: 'mysql://user:******@host:3306/dbname'
Important
Unlike most of the Smarter codebase, this method does not use Pydantic SecretStr for masking to avoid adding Pydantic as a dependency for the entire
smarterpackage.
- get_constraints()
- get_db_engine_display(*, field=<django.db.models.CharField: db_engine>)
Shows the label of the
db_engine. Seeget_FOO_display()for more information.
- get_deferred_fields()
Return a set containing names of deferred fields for this instance.
- get_kind_display(*, field=<django.db.models.CharField: kind>)
Shows the label of the
kind. Seeget_FOO_display()for more information.
- classmethod get_object_by_locator(locator)
Retrieves an object based on its record locator.
Example:
obj = MyModel.objects.create() print(obj.id) # e.g., 123 locator = obj.record_locator # e.g., "mymodel-rc2x" retrieved_obj = MyModel.get_object_by_locator(locator) print(type(retrieved_obj)) # Should be <class 'MyModel'> print(retrieved_obj) # Should be the same as obj
- Parameters:
locator (
str) – The record locator string to decode and search for.- Returns:
The model instance if found, otherwise None.
- Return type:
- get_proxy_protocol_display(*, field=<django.db.models.CharField: proxy_protocol>)
Shows the label of the
proxy_protocol. Seeget_FOO_display()for more information.
- get_readonly_csv_file(file_path)
Retrieves a read-only file object for a CSV file.
This method opens the specified CSV file in read-only mode and returns a file object that can be used to read its contents. It ensures that the file is not modified during the reading process.
- Parameters:
file_path (
str) – The path to the CSV file to open.- Returns:
A read-only file object for the specified CSV file.
- Return type:
file
- get_readonly_yaml_file(file_path)
Retrieves a read-only file object for a YAML file.
This method opens the specified YAML file in read-only mode and returns a file object that can be used to read its contents. It ensures that the file is not modified during the reading process.
- Parameters:
file_path (
str) – The path to the YAML file to open.- Returns:
A read-only file object for the specified YAML file.
- Return type:
file
- classmethod hash_regex()
Returns a regex pattern that matches the hashed ID format for this model anywhere in a string.
The hashed ID format is defined by the
HASH_PREFIXandHASH_SUFFIXclass attributes, with a base64-encoded string in between. This regex can be used to validate or extract hashed IDs from strings, including when embedded in URLs.- Returns:
A regex pattern for matching hashed IDs.
- Return type:
- property hashed_id: str
Returns a URL-friendly hashed version of the object’s ID for use in URLs and other.
contexts where an obscured, non-identifying, non-sequential identifier is preferred.
Encoding scheme: 1. Take the object’s ID and add a large constant (HASH_FLOOR) to ensure it’s not easily guessable. 2. Convert the resulting number to a string and encode it using URL-safe base64 encoding. 3. Remove any padding characters from the encoded string. 4. Add a prefix and suffix to the encoded string to create a recognizable format.
Example:
obj = MyModel.objects.create() print(obj.id) # e.g., 123 print(obj.hashed_id) # e.g., "rc2x"
- Returns:
Hashed ID string (URL-safe, no padding)
- Return type:
- property health_check_urls: list[str]
Returns a list of URL paths that are considered health check endpoints.
- hostname
-
Hostname. The remote host of the SQL connection. Should be a valid internet domain name.
The remote host of the SQL connection.
Should be a valid internet domain name.
- Type:
Type
- id
-
Primary key: ID
- Type:
Type
- classmethod id_from_hashed_id(hashed_id)
Decodes a hashed ID back to the original object ID.
decoding scheme: 1. Validate that the hashed ID starts with the expected prefix and ends with the expected suffix. 2. Remove the prefix and suffix to isolate the base64-encoded string. 3. Add padding if necessary to make the length of the encoded string a multiple of 4. 4. Decode the base64 string to get the original number as a string. 5. Convert the decoded string to an integer and subtract the HASH_FLOOR to get the original ID.
Example:
my_record = MyModel.objects.create() print(my_record.id) # e.g., 123 hashed_id = my_record.hashed_id # e.g., "rc2x" original_id = MyModel.id_from_hashed_id(hashed_id) print(original_id) # Should print the original ID (e.g., 123)
- kind
-
Kind. The kind of connection. Example: ‘SQL’, ‘API’.
Choices:
SqlConnectionApiConnection
- Type:
Type
- property manifest_url: str
Returns the URL to the plugin’s manifest.
Adds the manifest kind as a slug to the base manifest URL defined in the parent class. For example, if the base manifest URL is “/plugins/{hashed_id}” and the manifest kind is “sql_connection”, the resulting manifest URL would be “/plugins/{hashed_id}/sql_connection/”.
Example:
self.rfc1034_compliant_kind # 'sql-connection' self.rfc1034_compliant_name # 'smarter-test-sql self.manifest_url # 'http://localhost:9357/connection/connections/sql-connection/smarter-test-sql/'
- mask_string(string='', mask_char='*', mask_length=4, string_length=8)
Masks a string for secure logging.
This utility function masks all but the last unmasked_chars characters of the input string, replacing them with asterisks. It is useful for logging sensitive information like API keys or passwords.
- max_overflow
-
Max overflow. The maximum number of connections to allow beyond the pool size.
The maximum number of connections to allow beyond the pool size.
- Type:
Type
- objects: MetaDataWithOwnershipModelManager = <smarter.apps.account.models.metadata_with_ownership.MetaDataWithOwnershipModelManager object>
- password
ForeignKeytoSecretPassword. The password for authentication, if required. (related name:
sql_connections_password)The password for authentication, if required.
See:
smarter.apps.account.models.Secret- Type:
Type
- property pk
- plugin_data_sql_connection
Reverse
ForeignKeyfromPluginDataSqlAll plugin data sql connection of this SQL Connection (related name of
connection)- Type:
Type
- pool_size
-
Pool size. The size of the connection pool.
The size of the connection pool.
- Type:
Type
- port
-
Port. The port of the SQL connection. example: 3306 for MySQL.
The port of the SQL connection.
example: 3306 for MySQL. 5432 for PostgreSQL, 1521 for Oracle, 1433 for MS SQL Server. 5000 for Sybase. 1234 for SQLite (not commonly used). 3306 is a reasonable default as MySQL is widely used. 5432 could also be a reasonable default as PostgreSQL is also widely used.
- Type:
Type
- prepare_database_save(field)
- proxy_host
-
Proxy host. The remote host of the SQL proxy connection. Should be a valid internet domain name.
The remote host of the SQL proxy connection.
Should be a valid internet domain name.
- Type:
Type
- proxy_password
ForeignKeytoSecretProxy password. The API key for authentication, if required. (related name:
sql_connections_proxy_password)The password for the proxy connection, if required.
See:
smarter.apps.account.models.Secret- Type:
Type
- proxy_password_id
Internal field, use
proxy_passwordinstead.
- proxy_port
-
Proxy port. The port of the SQL proxy connection.
The port of the SQL proxy connection.
8080 is a common default for HTTP proxies. 3128 is another common default for HTTP proxies. 1080 is a common default for SOCKS proxies. 8080 is a reasonable default as it is widely used for HTTP proxies.
- Type:
Type
- proxy_protocol
-
Proxy protocol. The protocol to use for the proxy connection.
Choices:
httphttpssocks
The protocol to use for the proxy connection.
- Type:
Type
- proxy_username
-
Proxy username. The username for the proxy connection.
The username for the proxy connection.
- Type:
Type
- property ready: bool
Indicates whether the object is ready for use.
This is a placeholder that should be overridden in subclasses.
- Returns:
True if ready, False otherwise.
- Return type:
- property record_locator: str
Returns a short, URL-friendly record locator derived from the object’s ID.
Example:
obj = MyModel.objects.create(name="Example") print(obj.id) # e.g., 123 print(obj.record_locator) # e.g., "llm_client-rc2x"
- Returns:
Record locator string (URL-safe, no padding)
- Return type:
- recursive_sort_dict(data)
Recursively sorts a dictionary by its keys.
This method takes a dictionary and returns a new dictionary with all keys sorted in ascending order. If any values are also dictionaries, they will be sorted recursively as well.
- refresh_from_db(using=None, fields=None, from_queryset=None)
Reload field values from the database.
By default, the reloading happens from the database this instance was loaded from, or by the read router if this instance wasn’t loaded from any database. The using parameter will override the default.
Fields can be used to specify which fields to reload. The fields should be an iterable of field attnames. If fields is None, then all non-deferred fields are reloaded.
When accessing deferred fields of an instance, the deferred loading of the field will call this method.
- rename(new_name)
Rename the model instance with a new name.
- Parameters:
new_name (
str) – The new name for the instance.- Returns:
The updated instance of MetaDataModel with the new name.
- Return type:
- property rfc1034_compliant_name: str | None
Returns a URL-friendly name for the llm_client.
This property returns an RFC 1034-compliant name for the llm_client, suitable for use in URLs and DNS labels.
Example:
self.name = 'Example LLMClient 1' self.rfc1034_compliant_name # 'example-llm_client-1'
- Returns:
The RFC 1034-compliant name, or None if
self.nameis not set.- Return type:
Optional[str]
- rfc1034_compliant_str(name)
Converts a string to an RFC 1034 compliant format.
This method takes a string and converts it to a format that complies with RFC 1034, which is commonly used for domain names. It replaces invalid characters with hyphens and ensures the resulting string is lowercase.
- rfc1034_compliant_to_snake(name)
Converts an RFC 1034 compliant string to snake_case.
This method takes a string in RFC 1034 compliant format and converts it to snake_case. It replaces hyphens with underscores and ensures the resulting string is lowercase.
- save(*args, **kwargs)[source]
Override the save method to validate the field dicts.
This method ensures that all relevant fields are validated before saving the model instance. For example, it checks that the name is in snake_case and converts it if necessary, logs a warning if conversion occurs, and calls the model’s
validate()method to enforce any additional validation logic defined on the model. After validation, it proceeds with the standard Django save operation.- Parameters:
args – Positional arguments passed to the parent save method.
kwargs – Keyword arguments passed to the parent save method.
- Returns:
None
- save_base(raw=False, force_insert=False, force_update=False, using=None, update_fields=None)
Handle the parts of saving which should be done only once per save, yet need to be done in raw saves, too. This includes some sanity checks and signal sending.
The ‘raw’ argument is telling save_base not to save any parent models and not to do any changes to the values before save. This is used by fixture loading.
- serializable_value(field_name)
Return the value of the field name for this instance. If the field is a foreign key, return the id value instead of the object. If there’s no Field object with this name on the model, return the model attribute’s value.
Used to serialize a field’s value (in the serializer, or form output, for example). Normally, you would just access the attribute directly and not use this method.
- smarter_build_absolute_uri(request)
Attempts to get the absolute URI from a request object.
This utility function tries to retrieve the request URL from any valid child class of
django.http.HttpRequest. It is especially useful in unit tests or scenarios where the request object may not implementbuild_absolute_uri().- Parameters:
request (
HttpRequest) – The request object.- Returns:
The absolute request URL.
- Return type:
- Raises:
SmarterValueError – If the URI cannot be built from the request.
- sorted_dict(data)
Returns a new dictionary with keys sorted.
- sqlconnection
Reverse
OneToOneFieldfromSqlConnectionThe SQL Connection of this connection base (related name of
connectionbase_ptr)- Type:
Type
- ssh_known_hosts
-
Ssh known hosts. The known_hosts file content for verifying SSH connections. Usually comes from ~/.ssh/known_hosts.
The known_hosts file content for verifying SSH connections.
Usually comes from ~/.ssh/known_hosts.
- Type:
Type
- ssl_ca
-
Ssl ca. The Certificate Authority (CA) certificate for verifying the server.
The SSL certificate for the connection, if required.
The SSL key for the connection, if required. The Certificate Authority (CA) certificate for verifying the server.
- Type:
Type
- tagged_items
Reverse
GenericRelationfromSqlConnectionAll + of this tagged item (related name of
tagged_items)- Type:
Type
- tags = <taggit.managers._TaggableManager object>
- property tags_list: list[str]
Return the tags as a list of strings.
We assume that @cached_property is more efficient at fetch than @cache_results, all things considered equal, which provides a marginal boost to instances. Meanwhile, the @cache_results is persisted to the Django cache, and thus outlives this instance. Thus, best of both worlds.
- test_connection()[source]
Establish a database connection based on the authentication method.
This method attempts to establish a database connection using the configured authentication method for this SQL connection instance. The authentication method can be standard TCP/IP, TCP/IP over SSH, LDAP user/password, or none. Returns True if the connection is successfully established, otherwise False.
- Returns:
True if the connection is established, False otherwise.
- Return type:
Important
This method is called during the validation process to ensure that the connection parameters are correct and that a connection can be successfully made to the database. For example, it is invoked when saving a
SqlConnectioninstance to verify the connection details.See also:
- test_proxy()[source]
Test the proxy connection by making a request to a known URL through the proxy.
- Returns:
True if the proxy connection is successful, otherwise False.
- Return type:
- timeout
-
Timeout. The timeout for the database connection in seconds. Default is 30 seconds.
The timeout for the database connection in seconds.
Default is 30 seconds.
- Type:
Type
- to_camel_case(data, convert_values=False)
Converts a snake_case string to camelCase.
This method takes a string in snake_case format and converts it to camelCase. It is useful for standardizing naming conventions across different formats.
- to_json()
Serialize the model instance to a JSON-compatible dictionary.
This method uses the custom
SmarterJSONEncoderto ensure that all fields, including timestamps and any complex data types, are properly serialized.
- to_snake_case(data, convert_values=False)
Converts a camelCase or PascalCase string to snake_case.
This method takes a string in camelCase or PascalCase format and converts it to snake_case. It is useful for standardizing naming conventions across different formats.
- transport_handler(channel, src_addr, dest_addr)[source]
(NOT IMPLEMENTED) Handler for Paramiko SSH transport channels.
Warning
This method is a placeholder and does not implement actual port forwarding logic.
- property unformatted_class_name: str
Returns the raw class name without formatting.
- Returns:
The unformatted class name as a string.
- Return type:
This is useful for logging or serialization where the plain class name is needed.
- unique_error_message(model_class, unique_check)
- updated_at
-
Updated at
Timestamp indicating when the model instance was last updated.
This field is automatically updated to the current date and time whenever the instance is saved. It is indexed in the database for efficient querying.
- Type:
Type
- use_ssl
-
Use ssl. Whether to use SSL/TLS for the connection.
Whether to use SSL/TLS for the connection.
- Type:
Type
- user_profile
-
User profile (related name:
connectionbase)- Type:
Type
- user_profile_id
Internal field, use
user_profileinstead.
- validate()[source]
Override the validate method to test the SQL connection.
- Returns:
True if the connection test is successful, otherwise False.
- Return type:
- validate_constraints(exclude=None)
- validate_unique(exclude=None)
Check unique constraints on the model and raise ValidationError if any failed.