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Also separate header variables and "response_headers" option features.
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This commit adds the variable $response_header_NAME.
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When a variable is accessed in the Unit configuration, the value is cached.
This was useful prior to the URI rewrite feature, but now that the URI (more
precisely, the request target) can be rewritten, the contents of the variable
$uri (which contains the path part of the request target, and is decoded)
should not be cached anymore, or at least the cached value should be invalidated
after a URI rewrite.
Example:
{
"rewrite": "/prefix$uri",
"share": "$uri"
}
For a request line like GET /foo?bar=baz HTTP/1.1\r\n, the expected file
served in the response would be /prefix/foo, but due to the caching issue,
Unit currently serves /foo.
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This commit introduced the basic URI rewrite. It allows users to change request URI. Note the "rewrite" option ignores the contained query if any and the query from the request is preserverd.
An example:
"routes": [
{
"match": {
"uri": "/v1/test"
},
"action": {
"return": 200
}
},
{
"action": {
"rewrite": "/v1$uri",
"pass": "routes"
}
}
]
Reviewed-by: Alejandro Colomar <alx@nginx.com>
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Pp is used to separate paragraphs, not to introduce them. A Pp macro
call right after Sh is wrong, and it is ignored by the formatter, which
reports a warning about it.
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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The Authors section is meant to list the main authors. However, the
section only contained the copyright notice, so the Copyright section
seems more appropriate. While we change that, it makes sense to also
specify the license, and update the copyright year.
Reviewed-by: Liam Crilly <liam@nginx.com>
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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We've applied significant changes to the page, so let's update the date.
While we're at it, let's change it to use ISO 8601 format for the date.
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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Not setting it produces the default value of 'BSD' or 'GNU', depending
on the software formatting the manual page. We're neither, so let's
specify our project name. See groff_mdoc(7). While mandoc_mdoc(7)
formally says that .Os is only for the operating system, and not for the
package name, that's an oversimplification, and only meant for software
inherent to the OS. For portable software, mandoc(1)'s (and OpenBSD's)
maintainer Ingo Schwarze agreed that it is more sensible to specify the
project name (and optionally, the version).
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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There was a recent unanimous agreement by maintainers of groff, mandoc,
the Linux man-pages, and other relevant programmers, that manual pages
should not use uppercase unnecessarily. Use of uppercase in the title
and in the section's titles dates from before one could use bold,
italics, and other such formatting, so that it was the way of giving
more importance to certain parts of a page. Nowadays, we use bold, so
uppercase is unnecessary.
Moreover, using uppercase in the title is bad, since it removes
information. If we keep the exact casing used in the program (or
function) name, we provide more information. And anyway, if users want
to read in uppercase, they can program certain mdoc(7) or man(7) macros
to transform their arguments into uppercase. This could be done via
</etc/groff/mdoc.local> and </etc/groff/man.local>.
There's a plan of transforming OpenBSD pages and the Linux man-pages to
stop using uppercase. Other projects may join. That will likely happen
in the following months. Let's align with this.
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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This short option is not really supported. Probably it was just a typo.
Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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Reviewed-by: Artem Konev <a.konev@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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- Configuration: added "/config/settings/http/log_route".
Type: bool
Default: false
This adds configurability to the error log. It allows enabling and
disabling logs related to how the router performs selection of the
routes.
- HTTP: logging request line.
Log level: [notice]
The request line is essential to understand which logs correspond to
which request when reading the logs.
- HTTP: logging route that's been discarded.
Log level: [info]
- HTTP: logging route whose action is selected.
Log level: [notice]
- HTTP: logging when "fallback" action is taken.
Log level: [notice]
Closes: <https://github.com/nginx/unit/issues/758>
Link: <https://github.com/nginx/unit/pull/824>
Link: <https://github.com/nginx/unit/pull/839>
Suggested-by: Timo Stark <t.stark@nginx.com>
Suggested-by: Mark L Wood-Patrick <mwoodpatrick@gmail.com>
Suggested-by: Liam Crilly <liam@nginx.com>
Tested-by: Liam Crilly <liam@nginx.com>
Acked-by: Artem Konev <a.konev@f5.com>
Cc: Andrew Clayton <a.clayton@nginx.com>
Cc: Andrei Zeliankou <zelenkov@nginx.com>
Reviewed-by: Zhidao Hong <z.hong@f5.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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This commit fixed the njs memory leak happened in the config validation, updating and http requests.
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This allows one to simply run `./configure` and expect it to
produce sane defaults for an install.
Previously, without specifying `--prefix=...`, `make install`
would simply fail, recommending to set `--prefix` or `DESTDIR`,
but that recommendation was incomplete at best, since it didn't
set many of the subdirs needed for a good organization.
Setting `DESTDIR` was even worse, since that shouldn't even affect
an installation (it is required to be transparent to the
installation).
/usr/local is the historic Unix standard path to use for
installations from source made manually by the admin of the
system. Some package managers (Homebrew, I'm looking specifically
at you) have abused that path to install their things, but 1) it's
not our fault that someone else incorrectly abuses that path (and
they seem to be fixing it for newer archs; e.g., they started
using /opt/homebrew for Apple Silicon), 2) there's no better path
than /usr/local, 3) we still allow changing it for systems where
this might not be the desired path (MacOS Intel with hombrew), and
4) it's _the standard_.
See a related conversation with Ingo (OpenBSD maintainer):
On 7/27/22 16:16, Ingo Schwarze wrote:
> Hi Alejandro,
[...]
>
> Alejandro Colomar wrote on Sun, Jul 24, 2022 at 07:07:18PM +0200:
>> On 7/24/22 16:57, Ingo Schwarze wrote:
>>> Alejandro Colomar wrote on Sun, Jul 24, 2022 at 01:20:46PM +0200:
>
>>>> /usr/local is for sysadmins to build from source;
>
>>> Doing that is *very* strongly discouraged on OpenBSD.
>
>> I guess that's why the directory was reused in the BSDs to install ports
>> (probably ports were installed by the sysadmin there, and by extension,
>> ports are now always installed there, but that's just a guess).
>
> Maybe. In any case, the practice of using /usr/local for packages
> created from ports is significantly older than the recommendation
> to refrain from using upstream "make install" outside the ports
> framework.
>
> * The FreeBSD ports framework was started by Jordan Hubbard in 1993.
> * The ports framework was ported from FreeBSD to OpenBSD
> by Niklas Hallqvist in 1996.
> * NetBSD pkgsrc was forked from FreeBSD ports by Alistair G. Crooks
> and Hubert Feyrer in 1997.
>
> I failed to quickly find Jordan's original version, but rev. 1.1
> of /usr/ports/infrastructure/mk/bsd.port.mk in OpenBSD (dated Jun 3
> 22:47:10 1996 UTC) already said
>
> LOCALBASE ?= /usr/local
> PREFIX ?= ${LOCALBASE}
>
[...]
>> I had a discussion in NGINX Unit about it, and
>> the decission for now has been: "support prefix=/usr/local for default
>> manual installation through the Makefile, and let BSD users adjust to
>> their preferred path".
>
> That's an *excellent* solution for the task, thanks for doing it
> the right way. By setting PREFIX=/usr/local by default in the
> upstream Makefile, you are minimizing the work for *BSD porters.
>
> The BSD ports frameworks will typically run the upstreak "make install"
> with the variable DESTDIR set to a custom value, for example
>
> DESTDIR=/usr/ports/pobj/groff-1.23.0/fake-amd64
>
> so if the upstream Makefile sets PREFIX=/usr/local ,
> that's perfect, everything gets installed to the right place
> without an intervention by the person doing the porting.
>
> Of course, if the upstream Makefile would use some other PREFIX,
> that would not be a huge obstacle. All we have to do in that case
> is pass the option --prefix=/usr/local to the ./configure script,
> or something equivalent if the software isn't using GNU configure.
>
>> We were concerned that we might get collisions
>> with the BSD port also installing in /usr/local, but that's the least
>> evil (and considering BSD users don't typically run `make install`, it's
>> not so bad).
>
> It's not bad at all. It's perfect.
>
> Of course, if a user wants to install *without* the ports framework,
> they have to provide their own --prefix. But that's not an issue
> because it is easy to do, and installing without a port is discouraged
> anyway.
===
Directory variables should never contain a trailing slash (I've
learned that the hard way, where some things would break
unexpectedly). Especially, make(1) is likely to have problems
when things have double slashes or a trailing slash, since it
treats filenames as text strings. I've removed the trailing slash
from the prefix, and added it to the derivate variables just after
the prefix. pkg-config(1) also expects directory variables to have
no trailing slash.
===
I also removed the code that would set variables as depending on
the prefix if they didn't start with a slash, because that is a
rather non-obvious behavior, and things should not always depend
on prefix, but other dirs such as $(runstatedir), so if we keep
a similar behavior it would be very unreliable. Better keep
variables intact if set, or use the default if unset.
===
Print the real defaults for ./configure --help, rather than the actual
values.
===
I used a subdirectory under the standard /var/lib for NXT_STATE,
instead of a homemade "state" dir that does the same thing.
===
Modified the Makefile to create some dirs that weren't being
created, and also remove those that weren't being removed in
uninstall, probably because someone forgot to add them.
===
Add new options for setting the new variables, and rename some to be
consistent with the standard names. Keep the old ones at configuration
time for compatibility, but mark them as deprecated. Don't keep the old
ones at exec time.
===
A summary of the default config is:
Unit configuration summary:
bin directory: ............. "/usr/local/bin"
sbin directory: ............ "/usr/local/sbin"
lib directory: ............. "/usr/local/lib"
include directory: ......... "/usr/local/include"
man pages directory: ....... "/usr/local/share/man"
modules directory: ......... "/usr/local/lib/unit/modules"
state directory: ........... "/usr/local/var/lib/unit"
tmp directory: ............. "/tmp"
pid file: .................. "/usr/local/var/run/unit/unit.pid"
log file: .................. "/usr/local/var/log/unit/unit.log"
control API socket: ........ "unix:/usr/local/var/run/unit/control.unit.sock"
Link: <https://www.gnu.org/prep/standards/html_node/Directory-Variables.html>
Link: <https://refspecs.linuxfoundation.org/FHS_3.0/fhs/index.html>
Reviewed-by: Artem Konev <a.konev@f5.com>
Reviewed-by: Andrew Clayton <a.clayton@nginx.com>
Tested-by: Andrew Clayton <a.clayton@nginx.com>
Reviewed-by: Konstantin Pavlov <thresh@nginx.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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This commit is to loop through the request objects headers,
arguments, and cookies.
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While at it, fixed changelogs generation for Python 3.10 as well.
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This patch gives users the option to set a `"prefix"` attribute
for Python applications, either at the top level or for specific
`"target"`s. If the attribute is present, the value of `"prefix"`
must be a string beginning with `"/"`. If the value of the `"prefix"`
attribute is longer than 1 character and ends in `"/"`, the
trailing `"/"` is stripped.
The purpose of the `"prefix"` attribute is to set the `SCRIPT_NAME`
context value for WSGI applications and the `root_path` context
value for ASGI applications, allowing applications to properly route
requests regardless of the path that the server uses to expose the
application.
The context value is only set if the request's URL path begins with
the value of the `"prefix"` attribute. In all other cases, the
`SCRIPT_NAME` or `root_path` values are not set. In addition, for
WSGI applications, the value of `"prefix"` will be stripped from
the beginning of the request's URL path before it is sent to the
application.
Reviewed-by: Andrei Zeliankou <zelenkov@nginx.com>
Reviewed-by: Artem Konev <artem.konev@nginx.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
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This hooks the cgroup support up to the config system so it can actually
be used.
To make use of this in unit a new "cgroup" section has been added to the
isolation configuration.
e.g
"applications": {
"python": {
"type": "python",
"processes": 5,
"path": "/opt/unit/unit-cgroup-test/",
"module": "app",
"isolation": {
"cgroup": {
"path": "app/python"
}
}
}
}
Now there are two ways to specify the path, relative, like the above
(without a leading '/') and absolute (with a leading '/').
In the above case the "python" application is placed into its own cgroup
under CGROUP_ROOT/<main unit process cgroup>/app/python. Whereas if you
specified say
"path": "/unit/app/python"
Then the python application would be placed under
CGROUP_ROOT/unit/app/python
The first option allows you to easily take advantage of any resource
limits that have already been configured for unit.
With the second method (absolute pathname) if you know of an already
existing cgroup where you'd like to place it, you can, e.g
"path": "/system.slice/unit/python"
Where system.slice has already been created by systemd and may already
have some overall system limits applied which would also apply to unit.
Limits apply down the hierarchy and lower groups can't exceed the
previous group limits.
So what does this actually look like? Lets take the unit-calculator
application[0] and have each of its applications placed into their own
cgroup. If we give each application a new section like
"isolation": {
"cgroup": {
"path": "/unit/unit-calculator/add"
}
}
changing the path for each one, we can visualise the result with the
systemd-cgls command, e.g
│ └─session-5.scope (#4561)
│ ├─ 6667 sshd: andrew [priv]
│ ├─ 6684 sshd: andrew@pts/0
│ ├─ 6685 -bash
│ ├─ 12632 unit: main v1.28.0 [/opt/unit/sbin/unitd --control 127.0.0.1:808>
│ ├─ 12634 unit: controller
│ ├─ 12635 unit: router
│ ├─ 13550 systemd-cgls
│ └─ 13551 less
├─unit (#4759)
│ └─unit-calculator (#5037)
│ ├─subtract (#5069)
│ │ ├─ 12650 unit: "subtract" prototype
│ │ └─ 12651 unit: "subtract" application
│ ├─multiply (#5085)
│ │ ├─ 12653 unit: "multiply" prototype
│ │ └─ 12654 unit: "multiply" application
│ ├─divide (#5101)
│ │ ├─ 12671 unit: "divide" prototype
│ │ └─ 12672 node divide.js
│ ├─sqroot (#5117)
│ │ ├─ 12679 unit: "sqroot" prototype
│ │ └─ 12680 /home/andrew/src/unit-calculator/sqroot/sqroot
│ └─add (#5053)
│ ├─ 12648 unit: "add" prototype
│ └─ 12649 unit: "add" application
We used an absolute path so the cgroups will be created relative to the
main cgroupfs mount, e.g /sys/fs/cgroup
We can see that the main unit processes are in the same cgroup as the
shell from where they were started, by default child process are placed
into the same cgroup as the parent.
Then we can see that each application has been placed into its own
cgroup under /sys/fs/cgroup
Taking another example of a simple 5 process python application, with
"isolation": {
"cgroup": {
"path": "app/python"
}
}
Here we have specified a relative path and thus the python application
will be placed below the existing cgroup that contains the main unit
process. E.g
│ │ │ ├─app-glib-cinnamon\x2dcustom\x2dlauncher\x2d3-43951.scope (#90951)
│ │ │ │ ├─ 988 unit: main v1.28.0 [/opt/unit/sbin/unitd --no-daemon]
│ │ │ │ ├─ 990 unit: controller
│ │ │ │ ├─ 991 unit: router
│ │ │ │ ├─ 43951 xterm -bg rgb:20/20/20 -fg white -fa DejaVu Sans Mono
│ │ │ │ ├─ 43956 bash
│ │ │ │ ├─ 58828 sudo -i
│ │ │ │ ├─ 58831 -bash
│ │ │ │ └─app (#107351)
│ │ │ │ └─python (#107367)
│ │ │ │ ├─ 992 unit: "python" prototype
│ │ │ │ ├─ 993 unit: "python" application
│ │ │ │ ├─ 994 unit: "python" application
│ │ │ │ ├─ 995 unit: "python" application
│ │ │ │ ├─ 996 unit: "python" application
│ │ │ │ └─ 997 unit: "python" application
[0]: <https://github.com/lcrilly/unit-calculator>
Reviewed-by: Alejandro Colomar <alx@nginx.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
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This commit fixed the njs memory leak happened in the config validation, updating and http requests.
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Starting from Node.js v18.6.0 return value from all hooks must have
"shortCircuit: true" option specified. For more information see:
https://github.com/nodejs/node/commit/10bcad5c6e
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Python 3.8 added a new Python initialisation configuration API[0].
Python 3.11 marked the old API as deprecated resulting in the following
compiler warnings which we treat as errors, failing the build
src/python/nxt_python.c: In function ‘nxt_python_start’:
src/python/nxt_python.c:130:13: error: ‘Py_SetProgramName’ is deprecated [-Werror=deprecated-declarations]
130 | Py_SetProgramName(nxt_py_home);
| ^~~~~~~~~~~~~~~~~
In file included from /opt/python-3.11/include/python3.11/Python.h:94,
from src/python/nxt_python.c:7:
/opt/python-3.11/include/python3.11/pylifecycle.h:37:38: note: declared here
37 | Py_DEPRECATED(3.11) PyAPI_FUNC(void) Py_SetProgramName(const wchar_t *);
| ^~~~~~~~~~~~~~~~~
src/python/nxt_python.c:134:13: error: ‘Py_SetPythonHome’ is deprecated [-Werror=deprecated-declarations]
134 | Py_SetPythonHome(nxt_py_home);
| ^~~~~~~~~~~~~~~~
/opt/python-3.11/include/python3.11/pylifecycle.h:40:38: note: declared here
40 | Py_DEPRECATED(3.11) PyAPI_FUNC(void) Py_SetPythonHome(const wchar_t *);
| ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
We actually have a few config scenarios: Python < 3, Python >= 3.0 < 3.8
and for Python 3 we have two configs where we select one based on
virtual environment setup.
Factor out the Python 3 config initialisation into its own function. We
actually create two functions, one for Python 3.8+ and one for older
Python 3. We pick the right function to use at build time.
The new API also has error checking (where the old API doesn't) which we
handle.
[0]: https://peps.python.org/pep-0587/
Closes: <https://github.com/nginx/unit/issues/710>
[ Andrew: Expanded upon patch from @sandeep-gh ]
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
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