Fixing path handling by normalizing paths in 'options.py' #1652

alexeinazarov · 2024-07-19T15:41:55Z

This change addresses an issue where paths specified for various settings in the Supervisor configuration file were concatenated incorrectly, resulting in errors such as "couldn't chdir to /path/to/project/path/to/project/build: ENOENT."

The problem stemmed from inconsistent handling of relative paths within the options.py file. The changes involve ensuring the existing normalize_path function is applied to critical areas such as self.here in the process_config_file method, self.logfile, self.pidfile, and server URLs in the realize method. By ensuring all paths are converted to absolute, normalized paths, Supervisor can correctly resolve and manage the paths specified in the configuration file.

These changes improve path handling robustness and prevent path-related errors during process management.

Update:

I identified this bug while testing my C++ application that contains both server and client components. The issue with path handling prompted me to bring it to light. I made the necessary adjustments to ensure the paths are forming correctly. However, handling compatibility issues across different Python versions may take more time, so the fixes are not yet fully integrated into Supervisor.

This is my first pull request, and I am eager to contribute to the project. I understand there are failing tests, and I am committed to resolving these issues with your guidance. I hope this contribution will not only fix the issue but also motivate the community to participate in improving this aspect of Supervisor.

Any guidance or feedback you can provide would be greatly appreciated. Thank you for your understanding and support.

Best regards,
A.

…erverOptions class in 'options.py'

mnaberez · 2024-07-19T17:07:37Z

This change addresses an issue where paths specified for various settings in the Supervisor configuration file were concatenated incorrectly

Please provide instructions for how to duplicate the issue:

An example supervisord.conf file
Your expected result
The actual result

alexeinazarov · 2024-07-20T11:36:13Z

Dear Administrator,

Thank you for your inquiry regarding pull request #1652, which addresses the issue of incorrectly concatenated paths in the Supervisor configuration file. I appreciate the opportunity to provide further clarification on how to reproduce the issue and the rationale behind the proposed changes.

Instructions to Duplicate the Issue:

Example `supervisord.conf` File

Here is an example of the supervisord.conf file using relative paths:

; supervisord_relative.conf
[supervisord]
nodaemon=true
minfds=1024
minprocs=200
user=alexey  ; replace 'alexey' with the actual username

[unix_http_server]
file=/tmp/supervisor.sock
chmod=0700
chown=alexey:alexey  ; replace 'alexey' with the actual username

[program:kms_server]
command=./build/kms_server
directory=./build
autostart=true
autorestart=true
stdout_logfile=../logs/kms_server.out.log
stderr_logfile=../logs/kms_server.err.log
startsecs=17
startretries=7

[program:kms_client]
command=./test_kms.sh
directory=.
autostart=true
autorestart=false
stdout_logfile=./logs/kms_client.out.log
stderr_logfile=./logs/kms_client.err.log
startsecs=23
startretries=11

Expected Result

When converting the relative paths to absolute paths, the configuration should be as follows:

; supervisord.conf
[supervisord]
nodaemon=true
minfds=1024
minprocs=200
user=alexey  ; replace 'alexey' with the actual username

[unix_http_server]
file=/tmp/supervisor.sock
chmod=0700
chown=alexey:alexey  ; replace 'alexey' with the actual username

[program:kms_server]
command=/home/alexey/Documents/mit/appsave2/project/build/kms_server
directory=/home/alexey/Documents/mit/appsave2/project/build
autostart=true
autorestart=true
stdout_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_server.out.log
stderr_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_server.err.log
startsecs=17
startretries=7

[program:kms_client]
command=/home/alexey/Documents/mit/appsave2/project/test_kms.sh
directory=/home/alexey/Documents/mit/appsave2/project
autostart=true
autorestart=false
stdout_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_client.out.log
stderr_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_client.err.log
startsecs=23
startretries=11

Actual Result

Due to the path concatenation issue, the resulting configuration file incorrectly concatenates paths, causing errors such as the following highlighted in the directory field of the kms_server program:

; supervisord.conf
[supervisord]
nodaemon=true
minfds=1024
minprocs=200
user=alexey  ; replace 'alexey' with the actual username

[unix_http_server]
file=/tmp/supervisor.sock
chmod=0700
chown=alexey:alexey  ; replace 'alexey' with the actual username

[program:kms_server]
command=/home/alexey/Documents/mit/appsave2/project/build/kms_server
directory=/home/alexey/Documents/mit/appsave2/projecthome/alexey/Documents/mit/appsave2/project/build
autostart=true
autorestart=true
stdout_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_server.out.log
stderr_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_server.err.log
startsecs=17
startretries=7

[program:kms_client]
command=/home/alexey/Documents/mit/appsave2/project/test_kms.sh
directory=/home/alexey/Documents/mit/appsave2/project
autostart=true
autorestart=false
stdout_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_client.out.log
stderr_logfile=/home/alexey/Documents/mit/appsave2/project/logs/kms_client.err.log
startsecs=23
startretries=11

The doubled path in the directory field (directory=/home/alexey/Documents/mit/appsave2/projecthome/alexey/Documents/mit/appsave2/project/build) allowed me to identify the class ServerOptions() in the options.py file that needed to be updated. I reviewed all relevant methods and modified those necessary to use the normalize_path function.

Steps to Reproduce the Issue

Create a project directory and logs directory:

mkdir -p /home/alexey/Documents/mit/appsave2/project/build
mkdir -p /home/alexey/Documents/mit/appsave2/project/logs

Place the relative Supervisor configuration file (supervisord_relative.conf) in the project directory.

Run the following script to convert the relative paths to absolute paths:

#!/bin/bash

set -euo pipefail

project_dir="/home/alexey/Documents/mit/appsave2/project"
log_dir="$project_dir/logs"

mkdir -p "$project_dir/build" "$log_dir"
touch "$project_dir/supervisord_relative.conf"

cat <<EOL > "$project_dir/supervisord_relative.conf"
; supervisord_relative.conf
[supervisord]
nodaemon=true
minfds=1024
minprocs=200
user=alexey

[unix_http_server]
file=/tmp/supervisor.sock
chmod=0700
chown=alexey:alexey

[program:kms_server]
command=./build/kms_server
directory=./build
autostart=true
autorestart=true
stdout_logfile=../logs/kms_server.out.log
stderr_logfile=../logs/kms_server.err.log
startsecs=17
startretries=7

[program:kms_client]
command=./test_kms.sh
directory=.
autostart=true
autorestart=false
stdout_logfile=./logs/kms_client.out.log
stderr_logfile=./logs/kms_client.err.log
startsecs=23
startretries=11
EOL

sed -e "s#command=./build/kms_server#command=$project_dir/build/kms_server#g" \
    -e "s#directory=./build#directory=$project_dir/build#g" \
    -e "s#stdout_logfile=../logs/kms_server.out.log#stdout_logfile=$log_dir/kms_server.out.log#g" \
    -e "s#stderr_logfile=../logs/kms_server.err.log#stderr_logfile=$log_dir/kms_server.err.log#g" \
    -e "s#command=./test_kms.sh#command=$project_dir/test_kms.sh#g" \
    -e "s#directory=.#directory=$project_dir#g" \
    -e "s#stdout_logfile=./logs/kms_client.out.log#stdout_logfile=$log_dir/kms_client.out.log#g" \
    -e "s#stderr_logfile=./logs/kms_client.err.log#stderr_logfile=$log_dir/kms_client.err.log#g" \
    "$project_dir/supervisord_relative.conf" > "$project_dir/supervisord.conf"

cat "$project_dir/supervisord.conf"

Conclusion

The script demonstrates the path concatenation issue by producing a configuration file with incorrectly concatenated paths. This issue is due to the inconsistent handling of relative paths within the options.py file of the Supervisor library. The proposed changes in the pull request ensure that all paths are converted to absolute, normalized paths, thereby preventing such errors and improving path handling robustness.

Thank you for considering this detailed explanation. I look forward to any further guidance or feedback to resolve this issue effectively.

Best regards,
A.

mnaberez

Please remove the hundreds of lines of unrelated style changes so it's possible to see the code changes in the diff.

mnaberez · 2024-07-25T23:36:18Z

supervisor/options.py

@@ -55,19 +76,25 @@
 from supervisor import xmlrpc
 from supervisor import poller

+


Please remove this and all other unrelated style changes.

mnaberez · 2024-07-25T23:40:08Z

supervisor/options.py

@@ -1,3 +1,24 @@
+# Changes made by user 'alexeinazarov' to ensure proper path normalization and other improvements:


Please remove these comments listing the changes. The diff will show the changes.

alexeinazarov added 4 commits July 19, 2024 17:27

Fixing path handling by server by normalizing paths in 8 methods of S…

abcd389

…erverOptions class in 'options.py'

Replace f-strings with format() to ensure compatibility with Python 3.5

1df3574

Replace f-strings with format() to ensure compatibility with Python 2.7

2d63ef7

Replace f-strings with format() to ensure compatibility with Python 2.7

ccc7f69

mnaberez requested changes Jul 25, 2024

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Fixing path handling by normalizing paths in 'options.py' #1652

Fixing path handling by normalizing paths in 'options.py' #1652

alexeinazarov commented Jul 19, 2024 •

edited

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mnaberez commented Jul 19, 2024

alexeinazarov commented Jul 20, 2024

mnaberez left a comment

mnaberez Jul 25, 2024

mnaberez Jul 25, 2024

		@@ -55,19 +76,25 @@
		from supervisor import xmlrpc
		from supervisor import poller

		@@ -1,3 +1,24 @@
		# Changes made by user 'alexeinazarov' to ensure proper path normalization and other improvements:

Fixing path handling by normalizing paths in 'options.py' #1652

Are you sure you want to change the base?

Fixing path handling by normalizing paths in 'options.py' #1652

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alexeinazarov commented Jul 19, 2024 • edited Loading

mnaberez commented Jul 19, 2024

alexeinazarov commented Jul 20, 2024

Instructions to Duplicate the Issue:

Example supervisord.conf File

Expected Result

Actual Result

Steps to Reproduce the Issue

Conclusion

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mnaberez Jul 25, 2024

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alexeinazarov commented Jul 19, 2024 •

edited

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Example `supervisord.conf` File