## Description
This PR wraps the stdlib sync.(RW)Mutex & godeadlock.(RW)Mutex. This enables using go-deadlock via a build flag instead of using sed to replace sync with godeadlock in all files
Closes: #3242
Closes#4603
Commands used (VIM):
```
:args `rg -l errors.Wrap`
:argdo normal @q | update
```
where q is a macros rewriting the `errors.Wrap` to `fmt.Errorf`.
* libs/common: refactor libs common 3
- move nil.go into types folder and make private
- move service & baseservice out of common into service pkg
ref #4147
Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>
* add changelog entry
This PR is related to #3107 and a continuation of #3351
It is important to emphasise that in the privval original design, client/server and listening/dialing roles are inverted and do not follow a conventional interaction.
Given two hosts A and B:
Host A is listener/client
Host B is dialer/server (contains the secret key)
When A requires a signature, it needs to wait for B to dial in before it can issue a request.
A only accepts a single connection and any failure leads to dropping the connection and waiting for B to reconnect.
The original rationale behind this design was based on security.
Host B only allows outbound connections to a list of whitelisted hosts.
It is not possible to reach B unless B dials in. There are no listening/open ports in B.
This PR results in the following changes:
Refactors ping/heartbeat to avoid previously existing race conditions.
Separates transport (dialer/listener) from signing (client/server) concerns to simplify workflow.
Unifies and abstracts away the differences between unix and tcp sockets.
A single signer endpoint implementation unifies connection handling code (read/write/close/connection obj)
The signer request handler (server side) is customizable to increase testability.
Updates and extends unit tests
A high level overview of the classes is as follows:
Transport (endpoints): The following classes take care of establishing a connection
SignerDialerEndpoint
SignerListeningEndpoint
SignerEndpoint groups common functionality (read/write/timeouts/etc.)
Signing (client/server): The following classes take care of exchanging request/responses
SignerClient
SignerServer
This PR also closes#3601
Commits:
* refactoring - work in progress
* reworking unit tests
* Encapsulating and fixing unit tests
* Improve tests
* Clean up
* Fix/improve unit tests
* clean up tests
* Improving service endpoint
* fixing unit test
* fix linter issues
* avoid invalid cache values (improve later?)
* complete implementation
* wip
* improved connection loop
* Improve reconnections + fixing unit tests
* addressing comments
* small formatting changes
* clean up
* Update node/node.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client_test.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* check during initialization
* dropping connecting when writing fails
* removing break
* use t.log instead
* unifying and using cmn.GetFreePort()
* review fixes
* reordering and unifying drop connection
* closing instead of signalling
* refactored service loop
* removed superfluous brackets
* GetPubKey can return errors
* Revert "GetPubKey can return errors"
This reverts commit 68c06f19b4.
* adding entry to changelog
* Update CHANGELOG_PENDING.md
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_client.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_dialer_endpoint.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* Update privval/signer_listener_endpoint_test.go
Co-Authored-By: jleni <juan.leni@zondax.ch>
* updating node.go
* review fixes
* fixes linter
* fixing unit test
* small fixes in comments
* addressing review comments
* addressing review comments 2
* reverting suggestion
* Update privval/signer_client_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* Update privval/signer_client_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* Update privval/signer_listener_endpoint_test.go
Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>
* do not expose brokenSignerDialerEndpoint
* clean up logging
* unifying methods
shorten test time
signer also drops
* reenabling pings
* improving testability + unit test
* fixing go fmt + unit test
* remove unused code
* Addressing review comments
* simplifying connection workflow
* fix linter/go import issue
* using base service quit
* updating comment
* Simplifying design + adjusting names
* fixing linter issues
* refactoring test harness + fixes
* Addressing review comments
* cleaning up
* adding additional error check
