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SyncParameterClient always points to its own node #365

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Karsten1987 opened this issue Aug 31, 2017 · 1 comment
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SyncParameterClient always points to its own node #365

Karsten1987 opened this issue Aug 31, 2017 · 1 comment
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enhancement New feature or request

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@Karsten1987
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I was trying to get started with the rclcpp implementation for parameters and stumbled upon a question I couldn't figure out.

The AsyncParameterClient takes two arguments:
1.) The node to spawn the service clients on
2.) A remote_node name to which service server the client points to

The SyncParameterClient takes only one argument, i.e. the node to spawn the service clients on and always points to its own node.
https://github.com/ros2/rclcpp/blob/master/rclcpp/src/rclcpp/parameter_client.cpp#L284

This ever prevents to use the SyncParameterClient to ask for parameters of other nodes. Now, given that one could easily fetch all parameters of a node just by calling Node::get_parameters, I wonder what's the concept and use-case of this SyncParameterClient.

@Karsten1987 Karsten1987 added the question Further information is requested label Aug 31, 2017
@Karsten1987 Karsten1987 self-assigned this Aug 31, 2017
@Karsten1987
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Given today's offline discussion, it does make sense to adjust the syncparameterclient API to the asynchronous one.

Reasons for that is that the node interface provides means to query the local parameters and there is no direct need to go through service calls to fetch these.

@Karsten1987 Karsten1987 added enhancement New feature or request and removed question Further information is requested labels Sep 6, 2017
@mikaelarguedas mikaelarguedas added the ready Work is about to start (Kanban column) label Sep 27, 2017
@Karsten1987 Karsten1987 added in progress Actively being worked on (Kanban column) and removed ready Work is about to start (Kanban column) labels Sep 27, 2017
@Karsten1987 Karsten1987 removed the in progress Actively being worked on (Kanban column) label Oct 2, 2017
nnmm pushed a commit to ApexAI/rclcpp that referenced this issue Jul 9, 2022
* Ensure that context instance id storage is aligned correctly

* Make alignment compatible with MSVC

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nnmm pushed a commit to ApexAI/rclcpp that referenced this issue Jul 9, 2022
* Changing security directory lookup to a prefix match rather than exact match.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Changing security directory lookup to a prefix match rather than exact match.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Changing security directory lookup to a prefix match rather than exact match.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Changing security directory lookup to a prefix match rather than exact match.

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* Adding security_directory module and moving rcl_get_secure_root function to it. Adding tests.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Adding security_directory module and moving rcl_get_secure_root function to it. Adding tests.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Adding security_directory module and moving rcl_get_secure_root function to it. Adding tests.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Adding security_directory module and moving rcl_get_secure_root function to it. Adding tests.

Signed-off-by: Emerson Knapp <eknapp@amazon.com>

* Adding security_directory module and moving rcl_get_secure_root function to it. Adding tests.

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* 0.6.3

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* Fix error from uncrustify v0.68 (ros2#364)

* Ensure that context instance id storage is aligned correctly (ros2#365)

* Ensure that context instance id storage is aligned correctly

* Make alignment compatible with MSVC

* Namespace alignment macro with RCL_

* [rcl] Guard against bad allocation calling rcl_arguments_copy() (ros2#367)

* [rcl] Add test for copying arguments struct with no arguments

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* Remove uncessary guard against NULL pointer

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* Update rcl/include/rcl/security_directory.h

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* Adding line break in docstring

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* Removing duplicate doc string

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