Previously the command size could very depanding on the current username, hostname, and process pid.
Before
```
SSH command size: 759
Preamble (mitogen.core + econtext) size: 18227 (17.80KiB)
...
```
After
SSH command size: 755
Preamble (mitogen.core + econtext) size: 18227 (17.80KiB)
...
```
This replaces `mitogen.master.scan_code_imports()` with
`mitogen.imports.codeobj_imports()`. The Python 3.x implementation now uses
`str.find()`, relying on Python >= 3.6 "widecode" format. Behaviour and
semantics should be unchanged. Now implementations are approx
- 1.5 x faster on Python 2.x
- 2 - 3 x faster on Python 3.x
Before
```console
$ ./tests/bench/scan_code
scan_code_imports python2.7 100 loops, best of 3: 3.19 msec per loop
scan_code_imports python3.9 500 loops, best of 5: 685 usec per loop
scan_code_imports python3.10 500 loops, best of 5: 727 usec per loop
scan_code_imports python3.11 500 loops, best of 5: 601 usec per loop
scan_code_imports python3.12 500 loops, best of 5: 609 usec per loop
scan_code_imports python3.13 500 loops, best of 5: 586 usec per loop
```
After
```console
codeobj_imports python2.7 1000 loops, best of 3: 1.98 msec per loop
codeobj_imports python3.9 1000 loops, best of 5: 302 usec per loop
codeobj_imports python3.10 1000 loops, best of 5: 297 usec per loop
codeobj_imports python3.11 1000 loops, best of 5: 243 usec per loop
codeobj_imports python3.12 1000 loops, best of 5: 278 usec per loop
codeobj_imports python3.13 1000 loops, best of 5: 259 usec per loop
```
```console
$ uname -a
Darwin kintha 24.6.0 Darwin Kernel Version 24.6.0: Mon Jul 14 11:30:29 PDT
2025; root:xnu-11417.140.69~1/RELEASE_ARM64_T6000 arm64
```
```console
$ ./tests/bench/scan_code
scan_code_imports python2.7 100 loops, best of 3: 3.19 msec per loop
scan_code_imports python3.9 500 loops, best of 5: 685 usec per loop
scan_code_imports python3.10 500 loops, best of 5: 727 usec per loop
scan_code_imports python3.11 500 loops, best of 5: 601 usec per loop
scan_code_imports python3.12 500 loops, best of 5: 609 usec per loop
scan_code_imports python3.13 500 loops, best of 5: 586 usec per loop
```
This covers existing behaviours of `mitogen.master.scan_code_imports()` some
of which are relied on, some not, but regardless weren't tested. Notably
- Explicit relative imports return level > 0
- Imports inside `class` and `def` are excluded
- Imports inside other blocks are included
- Python 3.x prunes impossible if/else branches (previously unknown)
It also
- Decouples the test results from the implementation details of the unit test.
- Fixes a missing import
- Fixes at least one Python 2.4 incompatibility (use of with block)
Mitogen was leaving the stdout and stderr of subprocesses in non-blocking
mode. When Python code ran in the remote process created by Mitogen calls such
as `print(long_string)` or `os.stout.write(bigger_than_the_buffer)` sometimes
raised `BlockingIOError`, or similar.
This change
- Removes code in `mitogen.core.Side` that set blocking/non-blocking mode
- Adds blocking/non-blocking control to `os.mitogen.pipe()` and a new
function `mitogen.core.socketpair()`
- Replaces `mitogen.core.set_block` and `mitogen.core.set_nonblock`
with `mitogen.core.set_blocking`, mirroring `os.set_blocking`
- Updates call sites as appropriate
- Adds tests for new functions and arguments
- Adds a regression test for subprocess stdio blocking/non-blocking
fixes#712
This is to prevent job names being truncated in the Github Actions web UI. So
it is obvious at a glance which jobs have failed. Previously one had to click
into the details to know which job was which, leading to confusion and wasted
time.
This also
- removes braced ranges in `testenv.setenv`. They appear not to be supported
by tox (see https://github.com/tox-dev/tox/issues/3571)
- fixes the env var `DEFAULT_STDOUT_CALLBACK` -> `ANSIBLE_STDOUT_CALLBACK`
as a result of these test output format was previously not as intended for
some Ansible versions.
The arguments ansible_ssh_host_key_checking and ansible_host_key_checking were missing in the documentation, while being introduced with the commit "5749845324"
In vanilla Ansible >= 12 (ansible-core 2.19)
- ssh connection plugin `verbosity` controls `ssh [-v[v[v]]]`
- config option `DEFAULT_VERBOSITY` controls whether that output is displayed
In vanilla Ansible <= 11 (ansible-core <= 2.18)
- `DEFAULT_VERBOSITY` controls both `ssh` verbosity & display verbositty
As of this change
- Mitogen + Ansible >= 12 behaviour matches vanilla Ansible >= 12.
- Mitogen + Ansible <= 11 behaviour remains unchanged
- `DEFAULT_VERBOSITY` only controls display verbosity.
- Mitogen + Ansible respect the Ansible variable `mitogen_ssh_debug_level`
I've chosen not to retroactively replicate the old vanilla Ansible behaviour
in Mitogen + Ansible <= 11 cases. I'm pretty sure it was an oversight,
rather than a design choice, but Ansible+Mitogen with `ANSIBLE_VERBOSITY=3`
is already very verbose.
fixes#1282
See
- https://docs.ansible.com/ansible/latest/reference_appendices/config.html#default-verbosity
- https://docs.ansible.com/ansible/devel/collections/ansible/builtin/ssh_connection.html#parameter-verbosity
Ansible 12 (ansible-core 2.19) has gained support for specifying an SSH
password, without requiring `sshpass`. It specifies the environment variable
`SSH_ASKPASS` such that `ansible` itself is called.
Mitogen is already able to support this. This change provides test coverage of
the new feature by not installing `sshpass` on macOS runners. when Ansible 12
is under test. Ubuntu runners come with `sshpass` pre-installed.
Required Ansible is also bumped to the latest pre-releases, for relevant
fixes.
Note that tests/ansible/integration/ssh/templated_by_play_taskvar.yml was
previously erroniously being skipped with ansible-core 2.19.0a<N> and
2.19.0b<N>.
fixes#1293
refs #1175
Alex Willmer