CHANGELOG.md

v1.7.1 (2020-05-06)

Bug Fixes

• Compile Swift before executing since default file size limit of 1MB for execution is not enough for Swift to run successfully. Compilation has a file size limit of 4MB by default which seems to be enough for Swift to compile. Thanks @OliverwengFiltered.
  • Issues: #154
  • Commits: @371e2463
• Fixed environment loading for Telemetry Client.
  • Commits: @bd16119c

Other Changes

• Set VIRTUAL_HOST environment variable in Dockerfile to value 3000.
• Updated Telemetry Client to version c62fa63d.
• Added separated Docker Compose files for server and workers.
• Renamed service worker to workers and api to server.

Deployment Procedure

Judge0 API is collecting telemetry data to help understand how to improve the product and to better understand how the Judge0 API is used in various production environments. Read more about telemetry here.

With HTTPS (SSL/TLS)

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.7.1/judge0-api-v1.7.1-https.zip
unzip judge0-api-v1.7.1-https.zip

3. Change directory to judge0-api-v1.7.1-https:

cd judge0-api-v1.7.1-https

4. Edit docker-compose.yml and change variables VIRTUAL_HOST, LETSENCRYPT_HOST and LETSENCRYPT_EMAIL.
5. Run all services and wait few seconds until everything is initialized:

docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

6. Your instance of Judge0 API v1.7.1 is now available at https://<YOUR DOMAIN>.

With HTTP

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.7.1/judge0-api-v1.7.1.zip
unzip judge0-api-v1.7.1.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.7.1
docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

4. Your instance of Judge0 API v1.7.1 is now available at http://<IP ADDRESS OF YOUR SERVER>.

v1.7.0 (2020-05-05)

Huge thanks to sponsors of this release: Filtered and Evalart.

New Features

• Added 10 new languages, and in total there are now 42 active languages.

ID	Name	Note
75	C (Clang 7.0.1)
76	C++ (Clang 7.0.1)
77	COBOL (GnuCOBOL 2.2)	Sponsored by Evalart.
78	Kotlin (1.3.70)	Sponsored by Filtered.
79	Objective-C (Clang 7.0.1)	Sponsored by Filtered and Evalart.
80	R (4.0.0)	Sponsored by Filtered.
81	Scala (2.13.2)	Sponsored by Filtered.
82	SQL (SQLite 3.27.2)	Sponsored by Filtered. (*)
83	Swift (5.2.3)	Sponsored by Filtered and Evalart.
84	Visual Basic.Net (vbnc 0.0.0.5943)	Sponsored by Filtered.

(*) Watch this asciicast to learn how to use this language.

Other Changes

• Increased default MAX_MEMORY_LIMIT to 512000.
  • Commits: @3dcbfc96
• Set compile CPU time limit to MAX_CPU_TIME_LIMIT.
  • Commits: @3dcbfc96
• Set compile wall time limit to MAX_WALL_TIME_LIMIT.
  • Commits: @3dcbfc96
• Redirect input from /dev/null when compiling. Thank you @gollux for your help.
  • Commits: @42b89a7c

Deployment Procedure

With HTTPS (SSL/TLS)

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.7.0/judge0-api-v1.7.0-https.zip
unzip judge0-api-v1.7.0-https.zip

3. Change directory to judge0-api-v1.7.0-https:

cd judge0-api-v1.7.0-https

4. Edit docker-compose.yml and change variables VIRTUAL_HOST, LETSENCRYPT_HOST and LETSENCRYPT_EMAIL.
5. Run all services and wait few seconds until everything is initialized:

docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

6. Your instance of Judge0 API v1.7.0 is now available at https://<YOUR DOMAIN>.

With HTTP

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.7.0/judge0-api-v1.7.0.zip
unzip judge0-api-v1.7.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.7.0
docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

4. Your instance of Judge0 API v1.7.0 is now available at http://<IP ADDRESS OF YOUR SERVER>.

v1.6.0 (2020-05-01)

New Features

• Added support for automatically redirecting stderr to stdout of the running program with the configuration flag redirect_stderr_to_stdout. Added configuration variable REDIRECT_STDERR_TO_STDOUT that can be used for setting default behaviour for every submission.
  • Commits: @8e6617aa
• Added configuration variable DISALLOW_ORIGIN that can be used for disabling CORS only for specific origins.
  • Commits: @f61b5496 @a927c9db
• Added configuration variables ALLOW_IP and DISALLOW_IP that can be used for allowing/disallowing only specific IP addresses that can use instance of Judge0 API.
  • Commits: @4fd0f34b
• Added support for built in maintenance mode that can be enabled with configuration variables MAINTENANCE_MODE and MAINTENANCE_MESSAGE. In maintenance mode clients cannot create or delete submissions i.e. they cannot create new database changes.
  • Commits: @201221e2
• Added support for universal field * which returns all attributes of a submission.
  • Commits: @521cc2e2
• Added route GET /statistics which returns some basic and useful information about Judge0 API instance. Statistic report is cached for 10 minutes.
  • Commits: @a24db632 @621c50f1 @eead8067
• Added basic support for callbacks which are called with HTTP verb PUT.
  • Pull Requests: #98
  • Issues: #33
  • Commits: @41e846b1
• Added support for presetting custom additional files in a sandbox.
  • Issues: #32 #88
  • Commits: @7829db87 @6d1f4293 @6573c52f
• Added routes GET /submissions/batch and POST /submissions/batch batch create and show or submissions.
  • Issues: #34
  • Commits: @6420156b @87859b58 @595c7e11 @04c900c9 @cb676d6c

Improvements

• Use Redis queue with name that corresponds with the current Judge0 API version. This allows multiple instances of different versions of Judge0 API to use the same Redis instance.
  • Commits: @dd6b62d7
• Refactored submission field checking.
  • Commits: @9acefdbc
• Refactored setting up of default values.
  • Commits: @a14ae5d5

Bug Fixes

• Fixed a bug that ignored custom setting of configuration variables enable_per_process_and_thread_time_limit and enable_per_process_and_thread_memory_limit.
  • Commits: @a6f693a0
• Fixed a bug where cgroups flags for isolate were chosen in the wrong conditions.
  • Commits: @4116b9cb
• Fixed a bug that caused Internal Error because sandbox cleanup failed.
  • Pull Requests: #126
  • Issues: #123 #143
  • Commits: @514aec53
• Fixed a bug where low memory_limit would cause Internal Error. Minimum required value for memory_limit is now 2048.
  • Commits: @655ccf27

Security Fixes

• Fixed a bug that allowed creation of an arbitrary size of the compile output.
  • Commits: @5fc7b823

Other Changes

• Do not implicitly force wide open CORS settings when in development mode. I.e. variable ALLOW_ORIGIN can now also be used in development mode.
  • Commits: @a3a24c5c
• Removed output of configuration settings when server or worker starts.
  • Commits: @7061de7a
• Updated all the gems except Rails to the latest versions.
  • Commits: @230c7a77 @69a9fe11 @095588e6
• Changed default value of enable_per_process_and_thread_memory_limit to false.
  • Commits: @4116b9cb
• Don't show total number of workers in /workers that is determined with configuration variable COUNT because that number is not relevant.
  • Commits: @99939b89
• Changed the default port to 80 in Docker Compose file.
  • Commits: @6ab67d6b
• Limited the log size to 100 MB in Docker Compose file.
  • Commits: @435c7d79
• Added logging to run-workers script.
  • Commits: @381265a2
• Updated dummy client default values.
• Added Docker Compose file for HTTPS support.
• Refactored all development and production scripts from scripts directory.
• Refactored judge0-api.conf file.

Deployment Procedure

With HTTPS (SSL/TLS)

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.6.0/judge0-api-v1.6.0-https.zip
unzip judge0-api-v1.6.0-https.zip

3. Change directory to judge0-api-v1.6.0-https:

cd judge0-api-v1.6.0-https

4. Edit docker-compose.yml and change variables VIRTUAL_HOST, LETSENCRYPT_HOST and LETSENCRYPT_EMAIL.
5. Run all services and wait few seconds until everything is initialized:

docker-compose up -d db redis nginx letsencrypt
sleep 10s
docker-compose up -d
sleep 5s

6. Your instance of Judge0 API v1.6.0 is now available at https://<YOUR DOMAIN>.

With HTTP

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.6.0/judge0-api-v1.6.0.zip
unzip judge0-api-v1.6.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.6.0
docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

4. Your instance of Judge0 API v1.6.0 is now available at http://<IP ADDRESS OF YOUR SERVER>.

v1.5.0 (2020-01-01)

New Features

• Added 30 new languages, archived 42 languages and kept active 2 languages from the last release. In total, there are now 32 active languages that can be used and all are updated to their latest versions as of the date of this release. Archived languages cannot be used anymore. Following table shows a status of every language that API supports.
  • Issues: #51 #90 #106 #131
  • Commits: @f86a546c

ID	Name	Status
1	Bash (4.4)	archived
2	Bash (4.0)	archived
3	Basic (fbc 1.05.0)	archived
4	C (gcc 7.2.0)	archived
5	C (gcc 6.4.0)	archived
6	C (gcc 6.3.0)	archived
7	C (gcc 5.4.0)	archived
8	C (gcc 4.9.4)	archived
9	C (gcc 4.8.5)	archived
10	C++ (g++ 7.2.0)	archived
11	C++ (g++ 6.4.0)	archived
12	C++ (g++ 6.3.0)	archived
13	C++ (g++ 5.4.0)	archived
14	C++ (g++ 4.9.4)	archived
15	C++ (g++ 4.8.5)	archived
16	C# (mono 5.4.0.167)	archived
17	C# (mono 5.2.0.224)	archived
18	Clojure (1.8.0)	archived
19	Crystal (0.23.1)	archived
20	Elixir (1.5.1)	archived
21	Erlang (OTP 20.0)	archived
22	Go (1.9)	archived
23	Haskell (ghc 8.2.1)	archived
24	Haskell (ghc 8.0.2)	archived
25	Insect (5.0.0)	archived
26	Java (OpenJDK 9 with Eclipse OpenJ9)	archived
27	Java (OpenJDK 8)	archived
28	Java (OpenJDK 7)	archived
29	JavaScript (nodejs 8.5.0)	archived
30	JavaScript (nodejs 7.10.1)	archived
31	OCaml (4.05.0)	archived
32	Octave (4.2.0)	archived
33	Pascal (fpc 3.0.0)	archived
34	Python (3.6.0)	archived
35	Python (3.5.3)	archived
36	Python (2.7.9)	archived
37	Python (2.6.9)	archived
38	Ruby (2.4.0)	archived
39	Ruby (2.3.3)	archived
40	Ruby (2.2.6)	archived
41	Ruby (2.1.9)	archived
42	Rust (1.20.0)	archived
43	Plain Text	Renamed from Text (plain text).
44	Executable	Not changed.
45	Assembly (NASM 2.14.02)	NEW
46	Bash (5.0.0)	NEW
47	Basic (FBC 1.07.1)	NEW
48	C (GCC 7.4.0)	NEW
49	C (GCC 8.3.0)	NEW
50	C (GCC 9.2.0)	NEW
51	C# (Mono 6.6.0.161)	NEW
52	C++ (GCC 7.4.0)	NEW
53	C++ (GCC 8.3.0)	NEW
54	C++ (GCC 9.2.0)	NEW
55	Common Lisp (SBCL 2.0.0)	NEW
56	D (DMD 2.089.1)	NEW
57	Elixir (1.9.4)	NEW
58	Erlang (OTP 22.2)	NEW
59	Fortran (GFortran 9.2.0)	NEW
60	Go (1.13.5)	NEW
61	Haskell (GHC 8.8.1)	NEW
62	Java (OpenJDK 13.0.1)	NEW
63	JavaScript (Node.js 12.14.0)	NEW
64	Lua (5.3.5)	NEW
65	OCaml (4.09.0)	NEW
66	Octave (5.1.0)	NEW
67	Pascal (FPC 3.0.4)	NEW
68	PHP (7.4.1)	NEW
69	Prolog (GNU Prolog 1.4.5)	NEW
70	Python (2.7.17)	NEW
71	Python (3.8.1)	NEW
72	Ruby (2.7.0)	NEW
73	Rust (1.40.0)	NEW
74	TypeScript (3.7.4)	NEW

• Added route GET /languages/:id for getting all attributes of specified language.
  • Commits: @2a31e963
• Added route GET /languages/all for getting a list of all languages (archived and active).
  • Commits: @2a31e963
• Added route DELETE /submissions/:token for deleting specified submission. Only authorized requests (users) are allowed to delete a submission.
  • Commits: @3365e3c8
• Added configuration variable ENABLE_SUBMISSION_DELETE with default value set to false. By default you cannot delete a submission as long as this variable is set to false. When set to true then only authorized requests (users) can delete specific submission.
  • Commits: @79e1de95
• Added info routes GET /about, GET /version, GET /license and GET /isolate. Last route GET /isolate returns result from isolate --version command.
  • Commits: @9f5202a5

Improvements

• Updated base image to judge0/api-base:1.0.0 which uses Debian "buster" and has installed Ruby 2.7.0.
  • Issues: #113
  • Commits: @f86a546c
• Improved handling of an server error when one or more submission attributes cannot be serialized to JSON without Base64 encoding. User now gets an error with instructions to use base64_encoded=true query parameter.
  • Issues: #107 #129 #130
  • Commits: @cdcaa512

Bug Fixes

• Fixed example in configuration for using ALLOW_ORIGIN variable with multiple origins.
  • Commits: @21d0202a
• Fixed a bug where value of MAX_MAX_PROCESSES_AND_OR_THREADS was used as default value for max_processes_and_or_threads attribute of submission, whereas MAX_PROCESSES_AND_OR_THREADS should be used.
  • Commits: @563f8ea2

Other Changes

• Increased maximum allowed compiler_options and command_line_arguments length to 512 characters.
  • Issues: #122
  • Commits: @3d4df3bf
• Increased default value of MAX_PROCESSES_AND_OR_THREADS to 60.
  • Commits: @563f8ea2
• Increased default value of MAX_MAX_PROCESSES_AND_OR_THREADS to 120.
  • Commits: @563f8ea2
• Changed default value of RAILS_ENV to production.
  • Commits: @be55ca65
• Changed default value of INTERVAL to 0.1.
  • Commits: @be55ca65
• Updated year in LICENSE.
  • Commits: @679fb2ba
• Added environment variables JUDGE0_{HOMEPAGE,SOURCE_CODE,MAINTAINER,VERSION}. Isolate sandbox inherits these variables and they are now available for use in user code.
  • Commits: @9f5202a5

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.5.0/judge0-api-v1.5.0.zip
unzip judge0-api-v1.5.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.5.0
docker-compose up -d db redis
sleep 10s
docker-compose up -d
sleep 5s

4. Your instance of Judge0 API v1.5.0 is now available at http://<IP OF YOUR SERVER>:3000.

v1.4.0 (2019-10-31)

New Features

• Added support for compiler_options and command_line_arguments.
• Added configuration variables ENABLE_COMPILER_OPTIONS, ALLOWED_LANGUAGES_FOR_COMPILER_OPTIONS and ENABLE_COMMAND_LINE_ARGUMENTS for controlling usage of compiler options and command line arguments.

Security Improvements

• Run compilation process for compiled languages inside sandbox and use values of limit configuration variables for controlling sandbox resources.
• Move application location from /usr/src/api to /api to prevent untrusted code from reading it.
  • Commits: @0f1b07fe

Other Changes

• Don't link math library for C language by default. You now need to send -lm in compiler_options.
  • Commits: @619a3bbe

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.4.0/judge0-api-v1.4.0.zip
unzip judge0-api-v1.4.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.4.0
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.4.0 is now available at http://<IP OF YOUR SERVER>:3000.

v1.3.1 (2019-09-16)

Improvements

• Improved handling exec format error by introducing new status Exec Format Error.
  • Commits: @93a60115

Bug Fixes

• Fixed bug where execution of Go code with no main package would induce execve("./main"): No such file or directory because Go compiler wouldn't create main binary.
  • Commits: @93a60115

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.3.1/judge0-api-v1.3.1.zip
unzip judge0-api-v1.3.1.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.3.1
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.3.1 is now available at http://<IP OF YOUR SERVER>:3000.

v1.3.0 (2019-09-15)

New Features

• Added MAX_QUEUE_SIZE variable that defines a maximum submission queue size. If there is a new submission request and the queue is full, then that submission will be rejected.
  • Commits: @a2bcdecb

Improvements

• Improved worker shutdown procedure. Workers are now gracefully shutdown on docker stop.
  • Commits: @2ae0cd31

Bug Fixes

• Fixed a bug where authentication token was auto converted to integer.
  • Issues: #101
  • Commits: @b92c4970

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.3.0/judge0-api-v1.3.0.zip
unzip judge0-api-v1.3.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.3.0
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.3.0 is now available at http://<IP OF YOUR SERVER>:3000.

v1.2.2 (2019-09-07)

Securty Fixes

• Fixed a bug that allowed anybody to read judge0-api.conf file. This bug was introduced in version v1.2.1 when config was mounted into container. With this fix, config is still mounted into container but not in /usr/src/api folder but rather in /. Root folder is not binded in isolate sandbox, whereas /usr/src/api is.
  • Commits: @121c8f9d

Other Changes

• Don't allow execution of scripts in /usr/src/api folder.
  • Commits: @121c8f9d

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.2.2/judge0-api-v1.2.2.zip
unzip judge0-api-v1.2.2.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.2.2
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.2.2 is now available at http://<IP OF YOUR SERVER>:3000.

v1.2.1 (2019-08-24)

Improvements

• Improved config loading. Config can now be changed and reload just with docker-compose restart command.
  • Commits: @06fc37f1

Bug Fixes

• Fixed bug in run-worker script that didn't consider COUNT config variable.
  • Issues: #91
  • Commits: @06fc37f1

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.2.1/judge0-api-v1.2.1.zip
unzip judge0-api-v1.2.1.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.2.1
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.2.1 is now available at http://<IP OF YOUR SERVER>:3000.

v1.2.0-nim0.20.0 (2019-06-26)

This image contains only The Nim Programming Language. Free public instance of this image is available on https://nim.api.judge0.com.

This image was build for the purpose of creating dedicated web playground for this language, and in the future I will add and deploy every new release of it. In the nim branch of Judge0 API Base I will follow and install new releases of Nim, and in the nim branch of Judge0 API I will maintain a Judge0 API that only has Nim available.

Free playground for the Nim programming language that uses Judge0 API is available at https://nim.ide.judge0.com.

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.2.0-nim0.20.0/judge0-api-v1.2.0-nim0.20.0.zip
unzip judge0-api-v1.2.0-nim0.20.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.2.0-nim0.20.0
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.2.0-nim0.20.0 is now available at http://<IP OF YOUR SERVER>:3000.

v1.2.0-vlang0.1.3 (2019-06-26)

This image contains only The V Programming Language, specifically only V compiler built from commit @b00a47be. Free public instance of this image is available on https://vlang.api.judge0.com.

This image was build for the purpose of creating dedicated web playground for this new programming language, and in the future I will add and deploy every new release of it. In the vlang branch of Judge0 API Base I will follow and install new releases of V, and in the vlang branch of Judge0 API I will maintain a Judge0 API that only has V available.

Free playground for the V programming language that uses Judge0 API is available at https://vlang.ide.judge0.com.

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.2.0-vlang0.1.3/judge0-api-v1.2.0-vlang0.1.3.zip
unzip judge0-api-v1.2.0-vlang0.1.3.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.2.0-vlang0.1.3
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.2.0-vlang0.1.3 is now available at http://<IP OF YOUR SERVER>:3000.

v1.2.0 (2019-06-17)

New Features

• Added new language Executable that allows executing custom executable files.
  • Commits: @0ab08351
• Added new configuration variables: REDIS_PASSWORD, REDIS_PORT and POSTGRES_PORT.
  • Commits: @962d7d1d

Improvements

• Improved run-server and run-worker scripts.
  • Commits: @e1b3564b

Bug Fixes

• Fixed /etc/apt/sources.list that prevented package update.
  • Issues: #84
  • Commits: @7fdca3cf
• Fixed cleanup bug that didn't remove sandbox files if tmp directory was not empty.
  • Commits: @50ee4dbf
• Fixed another UTF-8 problem with Python that @nguyenvanquan7826 reported.
  • Issues: #69
  • Commits: @64635c98

Other Changes

• Updated some gems that had security issues.
  • Pull Requests: #77 #78 #79 #80 #81 #82
  • Commits: @e1b3564b
• Prepared Isolate Job for accepting custom compile flags.
  • Commits: @4f2dde1f

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.2.0/judge0-api-v1.2.0.zip
unzip judge0-api-v1.2.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.2.0
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.2.0 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.5-python3.6.8 (2019-03-08)

On @guvenim request I have built an Judge0 API image that contains just Python 3.6.8. This release also shows what changes are necessary in api-base and api when you only want to use languages that you need.

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.5-python3.6.8/judge0-api-v1.1.5-python3.6.8.zip
unzip judge0-api-v1.1.5-python3.6.8.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.5-python3.6.8
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.5-python3.6.8 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.5 (2019-02-17)

Bug Fixes

• Fixed problem with assigning compile output to submission when rerunning submission.
  • Commits: @c3cd0232

Other Changes

• Remove unwanted newlines from compile output.
  • Commits: @c3cd0232

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.5/judge0-api-v1.1.5.zip
unzip judge0-api-v1.1.5.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.5
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.5 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.4 (2019-02-17)

Bug Fixes

• Fixed problem with assigning compile output to submission when compile output is not empty.
  • Commits: @22403707

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.4/judge0-api-v1.1.4.zip
unzip judge0-api-v1.1.4.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.4
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.4 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.3 (2019-02-15)

Improvements

• Improved cleanup of sandbox by deleting stdin, stdout, stderr and meta file before running isolate cleanup.
  • Commits: @1dcfaf98

Bug Fixes

• Fixed problem with compile output that contained invalid byte sequence in UTF-8.
  • Commits: @37d46b14
• Fixed problem with submissions not changing their post-run attributes after rerun if compile error occured.
  • Commits: @37d46b14

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.3/judge0-api-v1.1.3.zip
unzip judge0-api-v1.1.3.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.3
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.3 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.2 (2019-02-15)

Improvements

• Improved reading from stdin and writing to stdout, stderr and meta. They are now not available in sandbox.
  • Commits: @1f135c1a @350ff3a4

Bug Fixes

• Fixed writing of source code and stdin to disc, they are now written as binary files to avoid UTF-8 problems.
  • Commits: @519efbea
• Fixed problem with stripping output that contained invalid byte sequence in UTF-8.
  • Commits: @4c994c67

Other Changes

• Use judge0/api-base:0.3.0 as base image which uses isolate@18554e83.
  • Commits: @350ff3a4

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.2/judge0-api-v1.1.2.zip
unzip judge0-api-v1.1.2.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.2
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.2 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.1 (2019-02-13)

Bug Fixes

• Fixed a problem when strip method was called on a nil class when expected output was nil.
  • Commits: @b25153e9

Other Changes

• Don't let worker update submission's finished_at attribute if it already exists. This allows Judge0 API administrators to manually rerun submissions from command line and preserve initial timestamps if some unexpected error occured.
  • Commits: @b25153e9

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.1/judge0-api-v1.1.1.zip
unzip judge0-api-v1.1.1.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.1
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.1.1 is now available at http://<IP OF YOUR SERVER>:3000.

v1.1.0 (2019-02-10)

New Features

• Added -lm compile flag to link with math library when compiling C source code.
  • Pull Requests: #60
• Added fixed time limit of 10 seconds for compilation.
  • Issues: #63 #64
  • Commits: @2f05ce2c

Improvements

• Improved procedure of seeding database with languages. Seeding is now idempotent.
  • Commits: @72cff961

Bux Fixes

• Fixed versions of Postgres and Redis in Docker Compose files.
  • Issues: #20 #38 #40 #45 #47 #56 #57
  • Commits: @80a61629 @90ec40cf
• Fixed problem with workers stopping when they lost connection with Postgres or Redis.
  • Commits: @eee340b6
• Fixed problem of storing submission's stdout and stderr that contained invalid byte sequence in UTF-8.
  • Commits: @ff63c1bc

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.1.0/judge0-api-v1.1.0.zip
unzip judge0-api-v1.1.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.1.0
docker-compose up -d
sleep 10s

v1.0.0 (2017-10-01)

This is the first production ready release of Judge0 API.

Deployment Procedure

1. Install Docker and Docker Compose.
2. Download and extract release archive:

wget https://github.com/judge0/api/releases/download/v1.0.0/judge0-api-v1.0.0.zip
unzip judge0-api-v1.0.0.zip

3. Run all services and wait few seconds until everything is initialized:

cd judge0-api-v1.0.0
docker-compose up -d
sleep 10s

4. Your instance of Judge0 API v1.0.0 is now available at http://<IP OF YOUR SERVER>:3000.