heat.rpc.client module

Client side of the heat engine RPC API.

class heat.rpc.client.EngineClient[source]

Bases: object

Client side of the heat engine rpc API.

API version history:

1.0 - Initial version.
1.1 - Add support_status argument to list_resource_types()
1.4 - Add support for service list
1.9 - Add template_type option to generate_template()
1.10 - Add support for software config list
1.11 - Add support for template versions list
1.12 - Add with_detail option for stack resources list
1.13 - Add support for template functions list
1.14 - Add cancel_with_rollback option to stack_cancel_update
1.15 - Add preview_update_stack() call
1.16 - Adds version, type_name to list_resource_types()
1.17 - Add files to validate_template
1.18 - Add show_nested to validate_template
1.19 - Add show_output and list_outputs for returning stack outputs
1.20 - Add resolve_outputs to stack show
1.21 - Add deployment_id to create_software_deployment
1.22 - Add support for stack export
1.23 - Add environment_files to create/update/preview/validate
1.24 - Adds ignorable_errors to validate_template
1.25 - list_stack_resource filter update
1.26 - Add mark_unhealthy
1.27 - Add check_software_deployment
1.28 - Add get_environment call
1.29 - Add template_id to create_stack/update_stack
1.30 - Add possibility to resource_type_* return descriptions
1.31 - Add nested_depth to list_events, when nested_depth is specified
       add root_stack_id to response
1.32 - Add get_files call
1.33 - Remove tenant_safe from list_stacks, count_stacks
       and list_software_configs
1.34 - Add migrate_convergence_1 call
1.35 - Add with_condition to list_template_functions
1.36 - Add files_container to create/update/preview/validate
BASE_RPC_API_VERSION = '1.0'
abandon_stack(ctxt, stack_identity)[source]

Deletes a given stack but resources would not be deleted.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you want to abandon.

authenticated_to_backend(ctxt)[source]

Validate the credentials in the RPC context.

Verify that the credentials in the RPC context are valid for the current cloud backend.

Parameters

ctxt – RPC context.

call(ctxt, msg, version=None, timeout=None)[source]
cast(ctxt, msg, version=None)[source]
check_software_deployment(cnxt, deployment_id, timeout)[source]
count_stacks(ctxt, filters=None, show_deleted=False, show_nested=False, show_hidden=False, tags=None, tags_any=None, not_tags=None, not_tags_any=None)[source]

Returns the number of stacks that match the given filters.

Parameters

  • ctxt – RPC context.

  • filters – a dict of ATTR:VALUE to match against stacks

  • show_deleted – if true, count will include the deleted stacks

  • show_nested – if true, count will include nested stacks

  • show_hidden – if true, count will include hidden stacks

  • tags – count stacks containing these tags. If multiple tags are passed, they will be combined using the boolean AND expression

  • tags_any – count stacks containing these tags. If multiple tags are passed, they will be combined using the boolean OR expression

  • not_tags – count stacks not containing these tags. If multiple tags are passed, they will be combined using the boolean AND expression

  • not_tags_any – count stacks not containing these tags. If multiple tags are passed, they will be combined using the boolean OR expression

Returns

an integer representing the number of matched stacks

create_software_config(cnxt, group, name, config, inputs=None, outputs=None, options=None)[source]
create_software_deployment(cnxt, server_id, config_id=None, input_values=None, action='INIT', status='COMPLETE', status_reason='', stack_user_project_id=None, deployment_id=None)[source]
create_stack(ctxt, stack_name, template, params, files, args, environment_files=None, files_container=None)[source]

Creates a new stack using the template provided.

Note that at this stage the template has already been fetched from the heat-api process if using a template-url.

Parameters

  • ctxt – RPC context.

  • stack_name – Name of the stack you want to create.

  • template – Template of stack you want to create.

  • params – Stack Input Params/Environment

  • files – files referenced from the environment.

  • args – Request parameters/args passed from API

  • environment_files (list or None) – optional ordered list of environment file names included in the files dict

  • files_container – name of swift container

delete_snapshot(cnxt, stack_identity, snapshot_id)[source]
delete_software_config(cnxt, config_id)[source]
delete_software_deployment(cnxt, deployment_id)[source]
delete_stack(ctxt, stack_identity, cast=False)[source]

Deletes a given stack.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you want to delete.

  • cast – cast the message instead of using call (default: False)

You probably never want to use cast(). If you do, you’ll never hear about any exceptions the call might raise.

describe_stack_resource(ctxt, stack_identity, resource_name, with_attr=False)[source]

Get detailed resource information about a particular resource.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack.

  • resource_name – the Resource.

describe_stack_resources(ctxt, stack_identity, resource_name)[source]

Get detailed resource information about one or more resources.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack.

  • resource_name – the Resource.

export_stack(ctxt, stack_identity)[source]

Exports the stack data in JSON format.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you want to export.

find_physical_resource(ctxt, physical_resource_id)[source]

Return an identifier for the resource.

Parameters

  • ctxt – RPC context.

  • physcial_resource_id – The physical resource ID to look up.

generate_template(ctxt, type_name, template_type='cfn')[source]

Generate a template based on the specified type.

Parameters

  • ctxt – RPC context.

  • type_name – The resource type name to generate a template for.

  • template_type – the template type to generate, cfn or hot.

get_environment(context, stack_identity)[source]

Returns the environment for an existing stack.

Parameters

  • context – RPC context

  • stack_identity – identifies the stack

Return type

dict

get_files(context, stack_identity)[source]

Returns the files for an existing stack.

Parameters

  • context – RPC context

  • stack_identity – identifies the stack

Return type

dict

get_revision(ctxt)[source]
get_template(ctxt, stack_identity)[source]

Get the template.

Parameters

  • ctxt – RPC context.

  • stack_name – Name of the stack you want to see.

identify_stack(ctxt, stack_name)[source]

Returns the full stack identifier for a single, live stack.

Parameters

  • ctxt – RPC context.

  • stack_name – Name of the stack you want to see, or None to see all

ignore_error_by_name(name)[source]

Returns a context manager that filters exceptions with a given name.

Parameters

name – Name to compare the local exception name to.

ignore_error_named(error, name)[source]

Raises the error unless its local name matches the supplied name.

Parameters

  • error – Remote raised error to derive the local name from.

  • name – Name to compare local name to.

list_events(ctxt, stack_identity, filters=None, limit=None, marker=None, sort_keys=None, sort_dir=None, nested_depth=None)[source]

Lists all events associated with a given stack.

It supports pagination (limit and marker), sorting (sort_keys and sort_dir) and filtering(filters) of the results.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you want to get events for

  • filters – a dict with attribute:value to filter the list

  • limit – the number of events to list (integer or string)

  • marker – the ID of the last event in the previous page

  • sort_keys – an array of fields used to sort the list

  • sort_dir – the direction of the sort (‘asc’ or ‘desc’).

  • nested_depth – Levels of nested stacks to list events for.

list_outputs(cntx, stack_identity)[source]
list_resource_types(ctxt, support_status=None, type_name=None, heat_version=None, with_description=False)[source]

Get a list of valid resource types.

Parameters

  • ctxt – RPC context.

  • support_status – Support status of resource type

  • type_name – Resource type’s name (regular expression allowed)

  • heat_version – Heat version

  • with_description – Either return resource type description or not

list_services(cnxt)[source]
list_software_configs(cnxt, limit=None, marker=None)[source]
list_software_deployments(cnxt, server_id=None)[source]
list_stack_resources(ctxt, stack_identity, nested_depth=0, with_detail=False, filters=None)[source]

List the resources belonging to a stack.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack.

  • nested_depth – Levels of nested stacks of which list resources.

  • with_detail – show detail for resources in list.

  • filters – a dict with attribute:value to search the resources

list_stacks(ctxt, limit=None, marker=None, sort_keys=None, sort_dir=None, filters=None, show_deleted=False, show_nested=False, show_hidden=False, tags=None, tags_any=None, not_tags=None, not_tags_any=None)[source]

Returns attributes of all stacks.

It supports pagination (limit and marker), sorting (sort_keys and sort_dir) and filtering (filters) of the results.

Parameters

  • ctxt – RPC context.

  • limit – the number of stacks to list (integer or string)

  • marker – the ID of the last item in the previous page

  • sort_keys – an array of fields used to sort the list

  • sort_dir – the direction of the sort (‘asc’ or ‘desc’)

  • filters – a dict with attribute:value to filter the list

  • show_deleted – if true, show soft-deleted stacks

  • show_nested – if true, show nested stacks

  • show_hidden – if true, show hidden stacks

  • tags – show stacks containing these tags. If multiple tags are passed, they will be combined using the boolean AND expression

  • tags_any – show stacks containing these tags. If multiple tags are passed, they will be combined using the boolean OR expression

  • not_tags – show stacks not containing these tags. If multiple tags are passed, they will be combined using the boolean AND expression

  • not_tags_any – show stacks not containing these tags. If multiple tags are passed, they will be combined using the boolean OR expression

Returns

a list of stacks

list_template_functions(ctxt, template_version, with_condition=False)[source]

Get a list of available functions in a given template type.

Parameters

  • ctxt – RPC context

  • template_version – template format/version tuple for which you want to get the list of functions.

  • with_condition – return includes condition functions.

list_template_versions(ctxt)[source]

Get a list of available template versions.

Parameters

ctxt – RPC context.

local_error_name(error)[source]

Returns the name of the error with any _Remote postfix removed.

Parameters

error – Remote raised error to derive the name from.

static make_msg(method, **kwargs)[source]
metadata_software_deployments(cnxt, server_id)[source]
migrate_convergence_1(ctxt, stack_id)[source]

Migrate the stack to convergence engine

Parameters

  • ctxt – RPC context

  • stack_name – Name of the stack you want to migrate

preview_stack(ctxt, stack_name, template, params, files, args, environment_files=None, files_container=None)[source]

Simulates a new stack using the provided template.

Note that at this stage the template has already been fetched from the heat-api process if using a template-url.

Parameters

  • ctxt – RPC context.

  • stack_name – Name of the stack you want to create.

  • template – Template of stack you want to create.

  • params – Stack Input Params/Environment

  • files – files referenced from the environment.

  • args – Request parameters/args passed from API

  • environment_files (list or None) – optional ordered list of environment file names included in the files dict

  • files_container – name of swift container

preview_update_stack(ctxt, stack_identity, template, params, files, args, environment_files=None, files_container=None)[source]

Returns the resources that would be changed in an update.

Based on the provided template and parameters.

Requires RPC version 1.15 or above.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you wish to update.

  • template – New template for the stack.

  • params – Stack Input Params/Environment

  • files – files referenced from the environment.

  • args – Request parameters/args passed from API

  • environment_files (list or None) – optional ordered list of environment file names included in the files dict

  • files_container – name of swift container

resource_mark_unhealthy(ctxt, stack_identity, resource_name, mark_unhealthy, resource_status_reason=None)[source]

Mark the resource as unhealthy or healthy.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack.

  • resource_name – the Resource.

  • mark_unhealthy – indicates whether the resource is unhealthy.

  • resource_status_reason – reason for health change.

resource_schema(ctxt, type_name, with_description=False)[source]

Get the schema for a resource type.

Parameters

  • ctxt – RPC context.

  • with_description – Return resource with description or not.

resource_signal(ctxt, stack_identity, resource_name, details, sync_call=False)[source]

Generate an alarm on the resource.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack.

  • resource_name – the Resource.

  • details – the details of the signal.

show_output(cntx, stack_identity, output_key)[source]
show_snapshot(cnxt, stack_identity, snapshot_id)[source]
show_software_config(cnxt, config_id)[source]
show_software_deployment(cnxt, deployment_id)[source]
show_stack(ctxt, stack_identity, resolve_outputs=True)[source]

Returns detailed information about one or all stacks.

Parameters

  • ctxt – RPC context.

  • stack_identity – Name of the stack you want to show, or None to show all

  • resolve_outputs – If True, stack outputs will be resolved

signal_software_deployment(cnxt, deployment_id, details, updated_at=None)[source]
stack_cancel_update(ctxt, stack_identity, cancel_with_rollback=True)[source]
stack_check(ctxt, stack_identity)[source]
stack_list_snapshots(cnxt, stack_identity)[source]
stack_restore(cnxt, stack_identity, snapshot_id)[source]
stack_resume(ctxt, stack_identity)[source]
stack_snapshot(ctxt, stack_identity, name)[source]
stack_suspend(ctxt, stack_identity)[source]
update_software_deployment(cnxt, deployment_id, config_id=None, input_values=None, output_values=None, action=None, status=None, status_reason=None, updated_at=None)[source]
update_stack(ctxt, stack_identity, template, params, files, args, environment_files=None, files_container=None)[source]

Updates an existing stack based on the provided template and params.

Note that at this stage the template has already been fetched from the heat-api process if using a template-url.

Parameters

  • ctxt – RPC context.

  • stack_name – Name of the stack you want to create.

  • template – Template of stack you want to create.

  • params – Stack Input Params/Environment

  • files – files referenced from the environment.

  • args – Request parameters/args passed from API

  • environment_files (list or None) – optional ordered list of environment file names included in the files dict

  • files_container – name of swift container

validate_template(ctxt, template, params=None, files=None, environment_files=None, files_container=None, show_nested=False, ignorable_errors=None)[source]

Uses the stack parser to check the validity of a template.

Parameters

  • ctxt – RPC context.

  • template – Template of stack you want to create.

  • params – Stack Input Params/Environment

  • files – files referenced from the environment/template.

  • environment_files – ordered list of environment file names included in the files dict

  • files_container – name of swift container

  • show_nested – if True nested templates will be validated

  • ignorable_errors – List of error_code to be ignored as part of validation