ApdbSqlConfig¶
- class lsst.dax.apdb.ApdbSqlConfig(*args, **kw)¶
Bases:
ApdbConfig
APDB configuration class for SQL implementation (ApdbSql).
Attributes Summary
If False then disable SQLAlchemy connection pool.
Maximum time to wait time for database lock to be released before exiting.
SQLAlchemy database connection URI (
str
)List of columns to read from DiaObject, by default read all columns (
List
, default[]
)Indexing mode for DiaObject table (
str
, default'baseline'
)Location of (YAML) configuration file with extra schema, definitions in this file are merged with the definitions in 'schema_file', extending or replacing parts of the schema.
Name of a HTM index column for DiaObject and DiaSource tables (
str
, default'pixelId'
)HTM indexing level (
int
, default20
)Max number of ranges in HTM envelope (
int
, default64
)Transaction isolation level, if unset then backend-default value is used, except for SQLite backend where we use READ_UNCOMMITTED.
Namespace or schema name for all tables in APDB database.
Prefix to add to table names and index names (
str
, default''
)Names of ra/dec columns in DiaObject table (
List
, default['ra', 'dec']
)Number of months of history to read from DiaForcedSource (
int
, default12
)Number of months of history to read from DiaSource (
int
, default12
)Time extent for replica chunks, new chunks are created every specified number of seconds.
Location of (YAML) configuration file with standard schema (
str
, default'${SDM_SCHEMAS_DIR}/yml/apdb.yaml'
)Name of the schema in YAML configuration file.
If True then pass SQLAlchemy echo option.
If True then print/log timing information (
bool
, defaultFalse
)If True, make and fill additional tables used for replication.
Methods Summary
compare
(other[, shortcut, rtol, atol, output])Compare this configuration to another
Config
for equality.formatHistory
(name, **kwargs)Format a configuration field's history to a human-readable format.
freeze
()Make this config, and all subconfigs, read-only.
items
()Get configurations as
(field name, field value)
pairs.keys
()Get field names.
load
(filename[, root])Modify this config in place by executing the Python code in a configuration file.
loadFromStream
(stream[, root, filename, ...])Modify this Config in place by executing the Python code in the provided stream.
loadFromString
(code[, root, filename, ...])Modify this Config in place by executing the Python code in the provided string.
names
()Get all the field names in the config, recursively.
save
(filename[, root])Save a Python script to the named file, which, when loaded, reproduces this config.
saveToStream
(outfile[, root, skipImports])Save a configuration file to a stream, which, when loaded, reproduces this config.
saveToString
([skipImports])Return the Python script form of this configuration as an executable string.
Subclass hook for computing defaults.
toDict
()Make a dictionary of field names and their values.
update
(**kw)Update values of fields specified by the keyword arguments.
validate
()Validate the Config, raising an exception if invalid.
values
()Get field values.
Attributes Documentation
- connection_pool¶
If False then disable SQLAlchemy connection pool. Do not use connection pool when forking. (
bool
, defaultTrue
)
- connection_timeout¶
Maximum time to wait time for database lock to be released before exiting. Defaults to sqlalchemy defaults if not set. (
float
, defaultNone
)
- dia_object_columns¶
List of columns to read from DiaObject, by default read all columns (
List
, default[]
)
- dia_object_index¶
Indexing mode for DiaObject table (
str
, default'baseline'
)Allowed values:
'baseline'
Index defined in baseline schema
'pix_id_iov'
(pixelId, objectId, iovStart) PK
'last_object_table'
Separate DiaObjectLast table
'None'
Field is optional
- extra_schema_file¶
Location of (YAML) configuration file with extra schema, definitions in this file are merged with the definitions in ‘schema_file’, extending or replacing parts of the schema. Deprecated: This field is deprecated, its value is not used. (
str
, defaultNone
)
- history¶
Read-only history.
- htm_index_column¶
Name of a HTM index column for DiaObject and DiaSource tables (
str
, default'pixelId'
)
- isolation_level¶
Transaction isolation level, if unset then backend-default value is used, except for SQLite backend where we use READ_UNCOMMITTED. Some backends may not support every allowed value. (
str
, defaultNone
)Allowed values:
'READ_COMMITTED'
Read committed
'READ_UNCOMMITTED'
Read uncommitted
'REPEATABLE_READ'
Repeatable read
'SERIALIZABLE'
Serializable
'None'
Field is optional
- namespace¶
Namespace or schema name for all tables in APDB database. Presently only works for PostgreSQL backend. If schema with this name does not exist it will be created when APDB tables are created. (
str
, defaultNone
)
- ra_dec_columns¶
Names of ra/dec columns in DiaObject table (
List
, default['ra', 'dec']
)
- read_forced_sources_months¶
Number of months of history to read from DiaForcedSource (
int
, default12
)
- replica_chunk_seconds¶
Time extent for replica chunks, new chunks are created every specified number of seconds. (
int
, default600
)
- schema_file¶
Location of (YAML) configuration file with standard schema (
str
, default'${SDM_SCHEMAS_DIR}/yml/apdb.yaml'
)
- use_insert_id¶
If True, make and fill additional tables used for replication. Databases created with earlier versions of APDB may not have these tables, and corresponding methods will not work for them. (
bool
, defaultFalse
)
Methods Documentation
- compare(other, shortcut=True, rtol=1e-08, atol=1e-08, output=None)¶
Compare this configuration to another
Config
for equality.- Parameters:
- other
lsst.pex.config.Config
Other
Config
object to compare against this config.- shortcut
bool
, optional If
True
, return as soon as an inequality is found. Default isTrue
.- rtol
float
, optional Relative tolerance for floating point comparisons.
- atol
float
, optional Absolute tolerance for floating point comparisons.
- outputcallable, optional
A callable that takes a string, used (possibly repeatedly) to report inequalities.
- other
- Returns:
- isEqual
bool
True
when the twolsst.pex.config.Config
instances are equal.False
if there is an inequality.
- isEqual
See also
Notes
Unselected targets of
RegistryField
fields and unselected choices ofConfigChoiceField
fields are not considered by this method.Floating point comparisons are performed by
numpy.allclose
.
- formatHistory(name, **kwargs)¶
Format a configuration field’s history to a human-readable format.
- Parameters:
- name
str
Name of a
Field
in this config.- **kwargs
Keyword arguments passed to
lsst.pex.config.history.format
.
- name
- Returns:
- history
str
A string containing the formatted history.
- history
See also
- freeze()¶
Make this config, and all subconfigs, read-only.
- items()¶
Get configurations as
(field name, field value)
pairs.- Returns:
- items
ItemsView
Iterator of tuples for each configuration. Tuple items are:
Field name.
Field value.
- items
- keys()¶
Get field names.
- Returns:
- names
KeysView
List of
lsst.pex.config.Field
names.
- names
- load(filename, root='config')¶
Modify this config in place by executing the Python code in a configuration file.
- Parameters:
- filename
str
Name of the configuration file. A configuration file is Python module.
- root
str
, optional Name of the variable in file that refers to the config being overridden.
For example, the value of root is
"config"
and the file contains:config.myField = 5
Then this config’s field
myField
is set to5
.
- filename
- loadFromStream(stream, root='config', filename=None, extraLocals=None)¶
Modify this Config in place by executing the Python code in the provided stream.
- Parameters:
- streamfile-like object,
str
,bytes
, orCodeType
Stream containing configuration override code. If this is a code object, it should be compiled with
mode="exec"
.- root
str
, optional Name of the variable in file that refers to the config being overridden.
For example, the value of root is
"config"
and the file contains:config.myField = 5
Then this config’s field
myField
is set to5
.- filename
str
, optional Name of the configuration file, or
None
if unknown or contained in the stream. Used for error reporting.- extraLocals
dict
ofstr
toobject
, optional Any extra variables to include in local scope when loading.
- streamfile-like object,
See also
Notes
For backwards compatibility reasons, this method accepts strings, bytes and code objects as well as file-like objects. New code should use
loadFromString
instead for most of these types.
- loadFromString(code, root='config', filename=None, extraLocals=None)¶
Modify this Config in place by executing the Python code in the provided string.
- Parameters:
- code
str
,bytes
, orCodeType
Stream containing configuration override code.
- root
str
, optional Name of the variable in file that refers to the config being overridden.
For example, the value of root is
"config"
and the file contains:config.myField = 5
Then this config’s field
myField
is set to5
.- filename
str
, optional Name of the configuration file, or
None
if unknown or contained in the stream. Used for error reporting.- extraLocals
dict
ofstr
toobject
, optional Any extra variables to include in local scope when loading.
- code
- Raises:
- ValueError
Raised if a key in extraLocals is the same value as the value of the root argument.
- save(filename, root='config')¶
Save a Python script to the named file, which, when loaded, reproduces this config.
- Parameters:
- filename
str
Desination filename of this configuration.
- root
str
, optional Name to use for the root config variable. The same value must be used when loading (see
lsst.pex.config.Config.load
).
- filename
- saveToStream(outfile, root='config', skipImports=False)¶
Save a configuration file to a stream, which, when loaded, reproduces this config.
- Parameters:
- outfilefile-like object
Destination file object write the config into. Accepts strings not bytes.
- root
str
, optional Name to use for the root config variable. The same value must be used when loading (see
lsst.pex.config.Config.load
).- skipImports
bool
, optional If
True
then do not includeimport
statements in output, this is to support human-oriented output frompipetask
where additional clutter is not useful.
- saveToString(skipImports=False)¶
Return the Python script form of this configuration as an executable string.
- Parameters:
- Returns:
- code
str
A code string readable by
loadFromString
.
- code
- setDefaults()¶
Subclass hook for computing defaults.
Notes
Derived
Config
classes that must compute defaults rather than using theField
instances’s defaults should do so here. To correctly use inherited defaults, implementations ofsetDefaults
must call their base class’ssetDefaults
.
- toDict()¶
Make a dictionary of field names and their values.
See also
Notes
This method uses the
toDict
method of individual fields. Subclasses ofField
may need to implement atoDict
method for this method to work.
- update(**kw)¶
Update values of fields specified by the keyword arguments.
- Parameters:
- **kw
Keywords are configuration field names. Values are configuration field values.
Notes
The
__at
and__label
keyword arguments are special internal keywords. They are used to strip out any internal steps from the history tracebacks of the config. Do not modify these keywords to subvert aConfig
instance’s history.Examples
This is a config with three fields:
>>> from lsst.pex.config import Config, Field >>> class DemoConfig(Config): ... fieldA = Field(doc='Field A', dtype=int, default=42) ... fieldB = Field(doc='Field B', dtype=bool, default=True) ... fieldC = Field(doc='Field C', dtype=str, default='Hello world') ... >>> config = DemoConfig()
These are the default values of each field:
>>> for name, value in config.iteritems(): ... print(f"{name}: {value}") ... fieldA: 42 fieldB: True fieldC: 'Hello world'
Using this method to update
fieldA
andfieldC
:>>> config.update(fieldA=13, fieldC='Updated!')
Now the values of each field are:
>>> for name, value in config.iteritems(): ... print(f"{name}: {value}") ... fieldA: 13 fieldB: True fieldC: 'Updated!'
- validate() None ¶
Validate the Config, raising an exception if invalid.
- Raises:
- lsst.pex.config.FieldValidationError
Raised if verification fails.
Notes
The base class implementation performs type checks on all fields by calling their
validate
methods.Complex single-field validation can be defined by deriving new Field types. For convenience, some derived
lsst.pex.config.Field
-types (ConfigField
andConfigChoiceField
) are defined inlsst.pex.config
that handle recursing into subconfigs.Inter-field relationships should only be checked in derived
Config
classes after calling this method, and base validation is complete.
- values()¶
Get field values.
- Returns:
- values
ValuesView
Iterator of field values.
- values