Inmanta API reference¶
Plugins¶
-
class
inmanta.plugins.
Context
(resolver, queue, owner, result)[source]¶ An instance of this class is used to pass context to the plugin
-
run_sync
(function: typing.Callable, timeout: int = 5)[source]¶ Execute the async function and return its result. This method takes care of starting and stopping the ioloop. The main use for this function is to use the inmanta internal rpc to communicate with the server.
Parameters: - function (
Callable
) – The async function to execute. This function should return a yieldable object. - timeout (
int
) – A timeout for the async function.
Returns: The result of the async call.
Raises: ConnectionRefusedError – When the function timeouts this exception is raised.
- function (
-
-
inmanta.plugins.
plugin
(function: typing.Callable = None, commands: typing.List[str] = None, emits_statements: bool = False)[source]¶ Python decorator to register functions with inmanta as plugin
Parameters: - function (
Callable
) – The function to register with inmanta. This is the first argument when it is used as decorator. - commands (
List
) – A list of command paths that need to be available. Inmanta raises an exception when the command is not available. - emits_statements (
bool
) – Set to true if this plugin emits new statements that the compiler should execute. This is only required for complex plugins such as integrating a template engine.
- function (
Resources¶
-
inmanta.resources.
resource
(name: str, id_attribute: str, agent: str)[source]¶ A decorator that registers a new resource. The decorator must be applied to classes that inherit from
Resource
Parameters: - name (
str
) – The name of the entity in the configuration model it creates a resources from. For examplestd::File
- id_attribute (
str
) – The attribute of this resource that uniquely identifies a resource on an agent. This attribute can be mapped. - agent (
str
) – This string indicates how the agent of this resource is determined. This string points to an attribute, but it can navigate relations (this value cannot be mapped). For example, the agent argument could behost.name
- name (
-
class
inmanta.resources.
Resource
(_id)[source]¶ Plugins should inherit resource from this class so a resource from a model can be serialized and deserialized.
Such as class is registered when the
resource()
decorator is used. Each class needs to indicate the fields the resource will have with a class field named “fields”. A metaclass merges all fields lists from the class itself and all superclasses. If a field it not available directly in the model object the serializer will look for static methods in the class with the name “get_$fieldname”.
-
class
inmanta.resources.
PurgeableResource
(_id)[source]¶ See
std::PurgeableResource
for more information.
-
class
inmanta.resources.
ManagedResource
(_id)[source]¶ See
std::ManagedResource
for more information.
Handlers¶
-
inmanta.agent.handler.
cache
(f=None, ignore: typing.List[str] = [], timeout: int = 5000, for_version: bool = True, cache_none: bool = True, cacheNone: bool = True)[source]¶ decorator for methods in resource handlers to provide caching
this decorator works similar to memoization: when the decorate method is called, its return value is cached, for subsequent calls, the cached value is used instead of the actual value
The name of the method + the arguments of the method form the cache key
If an argument named version is present and for_version is True, the cache entry is flushed after this version has been deployed If an argument named resource is present, it is assumed to be a resource and its ID is used, without the version information
Parameters: - timeout (
int
) – the number of second this cache entry should live - for_version (
bool
) – if true, this value is evicted from the cache when this deploy is ready - ignore (
List
) – a list of argument names that should not be part of the cache key - cache_none (
bool
) – cache returned none values
- timeout (
-
inmanta.agent.handler.
provider
(resource_type: str, name: str)[source]¶ A decorator that registers a new handler.
Parameters: - resource_type (
str
) – The type of the resource this handler provides an implementation for. For example,std::File
- name (
str
) – A name to reference this provider.
- resource_type (
-
class
inmanta.agent.handler.
SkipResource
[source]¶ Bases:
Exception
A handler should raise this exception when a resource should be skipped. The resource will be marked as skipped instead of failed.
-
class
inmanta.agent.handler.
ResourcePurged
[source]¶ If the
read_resource()
method raises this exception, the agent will mark the current state of the resource as purged.
-
class
inmanta.agent.handler.
HandlerContext
(resource, dry_run=False, action_id=None)[source]¶ Context passed to handler methods for state related “things”
-
add_change
(name: str, desired: typing.Any, current: typing.Any = None) → None[source]¶ Report a change of a field. This field is added to the set of updated fields
Parameters: - name (
str
) – The name of the field that was updated - desired – The desired value to which the field was updated (or should be updated)
- current – The value of the field before it was updated
- name (
-
add_changes
(**kwargs)[source]¶ Report a list of changes at once as kwargs
Parameters: - key – The name of the field that was updated. This field is also added to the set of updated fields
- value – The desired value of the field.
To report the previous value of the field, use the add_change method
-
critical
(msg: str, *args, **kwargs) → None[source]¶ Log ‘msg % args’ with severity ‘CRITICAL’.
To pass exception information, use the keyword argument exc_info with a true value, e.g.
logger.critical("Houston, we have a %s", "major disaster", exc_info=1)
-
debug
(msg: str, *args, **kwargs) → None[source]¶ Log ‘msg % args’ with severity ‘DEBUG’.
To pass exception information, use the keyword argument exc_info with a true value, e.g.
logger.debug("Houston, we have a %s", "thorny problem", exc_info=1)
-
error
(msg: str, *args, **kwargs) → None[source]¶ Log ‘msg % args’ with severity ‘ERROR’.
To pass exception information, use the keyword argument exc_info with a true value, e.g.
logger.error("Houston, we have a %s", "major problem", exc_info=1)
-
exception
(msg: str, *args, exc_info=True, **kwargs) → None[source]¶ Convenience method for logging an ERROR with exception information.
-
info
(msg: str, *args, **kwargs) → None[source]¶ Log ‘msg % args’ with severity ‘INFO’.
To pass exception information, use the keyword argument exc_info with a true value, e.g.
logger.info("Houston, we have a %s", "interesting problem", exc_info=1)
-
set_status
(status: inmanta.const.ResourceState) → None[source]¶ Set the status of the handler operation.
-
-
class
inmanta.agent.handler.
ResourceHandler
(agent, io=None) → None[source]¶ A baseclass for classes that handle resources. New handler are registered with the
provider()
decorator.The implementation of a handler should use the
self._io
instance to execute io operations. This io objects makes abstraction of local or remote operations. SeeLocalIO
for the available operations.Parameters: - agent – The agent that is executing this handler.
- io – The io object to use.
-
_diff
(current: inmanta.resources.Resource, desired: inmanta.resources.Resource) → typing.Dict[str, typing.Dict[str, typing.Any]][source]¶ Calculate the diff between the current and desired resource state.
Return type: Dict
Parameters: Returns: A dict with key the name of the field and value another dict with “current” and “desired” as keys for fields that require changes.
-
available
(resource: inmanta.resources.Resource) → bool[source]¶ Returns true if this handler is available for the given resource
Return type: bool
Parameters: resource ( Resource
) – Is this handler available for the given resource?Returns: Available or not?
-
can_process_events
() → bool[source]¶ Can this handler process events? This is a more generic version of the reload mechanism.
See the
ResourceHandler.process_events()
for more details about this mechanism.Returns: Return true if this handler processes events.
-
can_reload
() → bool[source]¶ Can this handler reload?
Returns: Return true if this handler needs to reload on requires changes.
-
check_facts
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → dict[source]¶ This method is called by the agent to query for facts. It runs
pre()
andpost()
. This method callsfacts()
to do the actually querying.Return type: dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
Returns: A dict with fact names as keys and facts values.
- ctx (
-
check_resource
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → inmanta.resources.Resource[source]¶ Check the current state of a resource
Return type: Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of.
Returns: A resource to represents the current state. Use the
clone()
to create clone of the given resource that can be modified.- ctx (
-
do_changes
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource, changes: dict) → None[source]¶ Do the changes required to bring the resource on this system in the state of the given resource.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of. - changes (
dict
) – The changes that need to occur as reported bylist_changes()
- ctx (
-
do_reload
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None[source]¶ Perform a reload of this resource.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to reload.
- ctx (
-
execute
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource, dry_run: bool = False) → None[source]¶ Update the given resource. This method is called by the agent. Most handlers will not override this method and will only override
check_resource()
, optionallylist_changes()
anddo_changes()
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of. - dry_run (
bool
) – True will only determine the required changes but will not execute them.
- ctx (
-
facts
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → dict[source]¶ Returns facts about this resource. Override this method to implement fact querying.
pre()
andpost()
are called before and after this method.Return type: dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
Returns: A dict with fact names as keys and facts values.
- ctx (
-
get_client
() → inmanta.protocol.AgentClient[source]¶ Get the client instance that identifies itself with the agent session.
Returns: A client that is associated with the session of the agent that executes this handler.
-
get_file
(hash_id) → bytes[source]¶ Retrieve a file from the fileserver identified with the given id. The convention is to use the sha1sum of the content to identify it.
Return type: bytes
Parameters: hash_id – The id of the content/file to retrieve from the server. Returns: The content in the form of a bytestring or none is the content does not exist.
-
list_changes
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → typing.Dict[str, typing.Dict[str, typing.Any]][source]¶ Returns the changes required to bring the resource on this system in the state described in the resource entry. This method calls
check_resource()
Return type: Dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of.
Returns: A dict with key the name of the field and value another dict with “current” and “desired” as keys for fields that require changes.
- ctx (
-
post
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None[source]¶ Method executed after an operation. Override this method to run after an operation.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
- ctx (
-
pre
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None[source]¶ Method executed before a handler operation (Facts, dryrun, real deployment, …) is executed. Override this method to run before an operation.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
- ctx (
-
process_events
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource, events: dict) → None[source]¶ Process events generated by changes to required resources. Override this method to process events in a handler. This method implements the deprecated reload mechanism. Make sure to call this method from a subclass if the reload behaviour is required.
This method is called for all dependents of the given resource (inverse of the requires relationship) that have send_event set to true and for which a deploy was started. These are the only conditions, even if all dependents have failed or no changes were deployed. It is up to the handler to decide what to do.
The default implementation provides the reload mechanism. It will call do_reload when the handler can_reload() and if at least one of the dependents have successfully deployed and there were changes.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to process the events for. - dict – A dict with events of the resource the given resource requires. The keys of the dict are the resources. Each value is a dict with the items status (const.ResourceState), changes (dict) and change (const.Change).
- ctx (
-
restore
(resource: inmanta.resources.Resource, snapshot_id: str) → None[source]¶ Restore a resource from a snapshot.
Parameters: - resource (
Resource
) – The resource for which a snapshot needs to be restored. - snapshot_id (
str
) – The id of the “file” on the server that contains the snapshot data. This data can be retrieved with theget_file()
method
- resource (
-
run_sync
(func: typing.Callable) → typing.Any[source]¶ Run a the given async function on the ioloop of the agent. It will block the current thread until the future resolves.
Parameters: func ( Callable
) – A function that returns a yieldable future.Returns: The result of the async function.
-
snapshot
(resource: inmanta.resources.Resource) → bytes[source]¶ Create a new snapshot and upload it to the server
Return type: bytes
Parameters: resource ( Resource
) – The state of the resource for which a snapshot is createdReturns: The data that needs to be uploaded to the server. This data is passed back to the restore method on snapshot restore.
-
stat_file
(hash_id: str) → bool[source]¶ Check if a file exists on the server. This method does and async call to the server and blocks on the result.
Return type: bool
Parameters: hash_id ( str
) – The id of the file on the server. The convention is the use the sha1sum of the content as id.Returns: True if the file is available on the server.
-
class
inmanta.agent.handler.
CRUDHandler
(agent, io=None) → None[source]¶ This handler base class requires CRUD methods to be implemented: create, read, update and delete. Such a handler only works on purgeable resources.
-
available
(resource: inmanta.resources.Resource) → bool¶ Returns true if this handler is available for the given resource
Return type: bool
Parameters: resource ( Resource
) – Is this handler available for the given resource?Returns: Available or not?
-
can_process_events
() → bool¶ Can this handler process events? This is a more generic version of the reload mechanism.
See the
ResourceHandler.process_events()
for more details about this mechanism.Returns: Return true if this handler processes events.
-
can_reload
() → bool¶ Can this handler reload?
Returns: Return true if this handler needs to reload on requires changes.
-
check_facts
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → dict¶ This method is called by the agent to query for facts. It runs
pre()
andpost()
. This method callsfacts()
to do the actually querying.Return type: dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
Returns: A dict with fact names as keys and facts values.
- ctx (
-
check_resource
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → inmanta.resources.Resource¶ Check the current state of a resource
Return type: Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of.
Returns: A resource to represents the current state. Use the
clone()
to create clone of the given resource that can be modified.- ctx (
-
close
() → None¶
-
create_resource
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.PurgeableResource) → None[source]¶ This method is called by the handler when the resource should be created.
Parameters: - context – Context can be used to get values discovered in the read method. For example, the id used in API calls. This context should also be used to let the handler know what changes were made to the resource.
- resource (
PurgeableResource
) – The desired resource state.
-
delete_resource
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.PurgeableResource) → None[source]¶ This method is called by the handler when the resource should be deleted.
Parameters: - ctx (
HandlerContext
) – Context can be used to get values discovered in the read method. For example, the id used in API calls. This context should also be used to let the handler know what changes were made to the resource. - resource (
PurgeableResource
) – The desired resource state.
- ctx (
-
do_changes
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource, changes: dict) → None¶ Do the changes required to bring the resource on this system in the state of the given resource.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of. - changes (
dict
) – The changes that need to occur as reported bylist_changes()
- ctx (
-
do_reload
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None¶ Perform a reload of this resource.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to reload.
- ctx (
-
execute
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.PurgeableResource, dry_run: bool = None) → None[source]¶ Update the given resource. This method is called by the agent. Override the CRUD methods of this class.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
PurgeableResource
) – The resource to check the current state of. - dry_run (
bool
) – True will only determine the required changes but will not execute them.
- ctx (
-
facts
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → dict¶ Returns facts about this resource. Override this method to implement fact querying.
pre()
andpost()
are called before and after this method.Return type: dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
Returns: A dict with fact names as keys and facts values.
- ctx (
-
get_client
() → inmanta.protocol.AgentClient¶ Get the client instance that identifies itself with the agent session.
Returns: A client that is associated with the session of the agent that executes this handler.
-
get_file
(hash_id) → bytes¶ Retrieve a file from the fileserver identified with the given id. The convention is to use the sha1sum of the content to identify it.
Return type: bytes
Parameters: hash_id – The id of the content/file to retrieve from the server. Returns: The content in the form of a bytestring or none is the content does not exist.
-
list_changes
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → typing.Dict[str, typing.Dict[str, typing.Any]]¶ Returns the changes required to bring the resource on this system in the state described in the resource entry. This method calls
check_resource()
Return type: Dict
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to check the current state of.
Returns: A dict with key the name of the field and value another dict with “current” and “desired” as keys for fields that require changes.
- ctx (
-
post
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None¶ Method executed after an operation. Override this method to run after an operation.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
- ctx (
-
pre
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource) → None¶ Method executed before a handler operation (Facts, dryrun, real deployment, …) is executed. Override this method to run before an operation.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to query facts for.
- ctx (
-
process_events
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.Resource, events: dict) → None¶ Process events generated by changes to required resources. Override this method to process events in a handler. This method implements the deprecated reload mechanism. Make sure to call this method from a subclass if the reload behaviour is required.
This method is called for all dependents of the given resource (inverse of the requires relationship) that have send_event set to true and for which a deploy was started. These are the only conditions, even if all dependents have failed or no changes were deployed. It is up to the handler to decide what to do.
The default implementation provides the reload mechanism. It will call do_reload when the handler can_reload() and if at least one of the dependents have successfully deployed and there were changes.
Parameters: - ctx (
HandlerContext
) – Context object to report changes and logs to the agent and server. - resource (
Resource
) – The resource to process the events for. - dict – A dict with events of the resource the given resource requires. The keys of the dict are the resources. Each value is a dict with the items status (const.ResourceState), changes (dict) and change (const.Change).
- ctx (
-
read_resource
(ctx: inmanta.agent.handler.HandlerContext, resource: inmanta.resources.PurgeableResource) → None[source]¶ This method reads the current state of the resource. It provides a copy of the resource that should be deployed, the method implementation should modify the attributes of this resource to the current state.
Parameters: - ctx (
HandlerContext
) – Context can be used to pass value discovered in the read method to the CUD methods. For example, the id used in API calls - resource (
PurgeableResource
) – A clone of the desired resource state. The read method need to set values on this object.
Raises: - SkipResource – Raise this exception when the handler should skip this resource
- ResourcePurged – Raise this exception when the resource does not exist yet.
- ctx (
-
restore
(resource: inmanta.resources.Resource, snapshot_id: str) → None¶ Restore a resource from a snapshot.
Parameters: - resource (
Resource
) – The resource for which a snapshot needs to be restored. - snapshot_id (
str
) – The id of the “file” on the server that contains the snapshot data. This data can be retrieved with theget_file()
method
- resource (
-
run_sync
(func: typing.Callable) → typing.Any¶ Run a the given async function on the ioloop of the agent. It will block the current thread until the future resolves.
Parameters: func ( Callable
) – A function that returns a yieldable future.Returns: The result of the async function.
-
set_cache
(cache: inmanta.agent.cache.AgentCache) → None¶
-
snapshot
(resource: inmanta.resources.Resource) → bytes¶ Create a new snapshot and upload it to the server
Return type: bytes
Parameters: resource ( Resource
) – The state of the resource for which a snapshot is createdReturns: The data that needs to be uploaded to the server. This data is passed back to the restore method on snapshot restore.
-
stat_file
(hash_id: str) → bool¶ Check if a file exists on the server. This method does and async call to the server and blocks on the result.
Return type: bool
Parameters: hash_id ( str
) – The id of the file on the server. The convention is the use the sha1sum of the content as id.Returns: True if the file is available on the server.
-
update_resource
(ctx: inmanta.agent.handler.HandlerContext, changes: dict, resource: inmanta.resources.PurgeableResource) → None[source]¶ This method is called by the handler when the resource should be updated.
Parameters: - ctx (
HandlerContext
) – Context can be used to get values discovered in the read method. For example, the id used in API calls. This context should also be used to let the handler know what changes were made to the resource. - changes (
dict
) – A map of resource attributes that should be changed. Each value is a tuple with the current and the desired value. - resource (
PurgeableResource
) – The desired resource state.
- ctx (
-
upload_file
(hash_id: str, content: bytes) → None¶ Upload a file to the server
Parameters: - hash_id (
str
) – The id to identify the content. The convention is to use the sha1sum of the content to identify it. - content (
bytes
) – A byte string with the content
- hash_id (
-
-
class
inmanta.agent.io.local.
LocalIO
(uri, config)[source]¶ This class provides handler IO methods
-
chmod
(path, permissions)[source]¶ Change the permissions
Parameters: - path (str) – The path of the file or directory to change the permission of.
- permissions (str) – An octal string with the permission to set.
-
chown
(path, user=None, group=None)[source]¶ Change the ownership of a file.
Parameters: - path (str) – The path of the file or directory to change the ownership of.
- user (str) – The user to change to
- group (str) – The group to change to
-
close
()¶ Close any resources
-
file_exists
(path)[source]¶ Check if a given file exists
Parameters: path (str) – The path to check if it exists. Returns: Returns true if the file exists Return type: bool
-
file_stat
(path)[source]¶ Do a stat call on a file
Parameters: path (str) – The file or direct to stat Returns: A dict with the owner, group and permissions of the given path Return type: dict[str, str]
-
hash_file
(path)[source]¶ Return the sha1sum of the file at path
Parameters: path (str) – The path of the file to hash the content of Returns: The sha1sum in a hex string Return type: str
-
is_remote
()[source]¶ Are operation executed remote
Returns: Returns true if the io operations are remote. Return type: bool
-
is_symlink
(path)[source]¶ Is the given path a symlink
Parameters: path (str) – The path of the symlink Returns: Returns true if the given path points to a symlink Return type: str
-
mkdir
(path)[source]¶ Create a directory
Parameters: path (str) – Create this directory. The parent needs to exist.
-
put
(path, content)[source]¶ Put the given content at the given path
Parameters: - path (str) – The location where to write the file
- content (bytes) – The binarystring content to write to the file.
-
read
(path)[source]¶ Read in the file in path and return its content as string
Parameters: path (str) – The path of the file to read. Returns: The string content of the file Return type: string
-
read_binary
(path)[source]¶ Read in the file in path and return its content as a bytestring
Parameters: path (str) – The path of the file to read. Returns: The byte content of the file Return type: bytes
-
readlink
(path)[source]¶ Return the target of the path
Parameters: path (str) – The symlink to get the target for. Returns: The target of the symlink Return type: str
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run
(command, arguments=[], env=None, cwd=None, timeout=None)[source]¶ Execute a command with the given argument and return the result
Parameters: - command (str) – The command to execute.
- arguments (list) – The arguments of the command
- env (dict) – A dictionary with environment variables.
- cwd (str) – The working dir to execute the command in.
- timeout (int) – The timeout for this command. This parameter is ignored if the command is executed remotely with a python 2 interpreter.
Returns: A tuple with (stdout, stderr, returncode)
Return type: tuple
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