code2pg is a tool that help migrating application code that contains SQL queries from Oracle to PostgreSQL standard.
It can:
- estimate in man-days how difficult a migration will be for application code (in Java files for example);
- tag the source file for Oracle instructions that might need to be migrated;
- generate different reports: html, text or minimal;
- connect directly to a SVN repository or use local files;
- be tuned according to the team's expertise.
code2pg is a standalone script. It requires the File::Slurp, File::Find::Rule, Text::ASCIITable and Config::General Perl modules. They can be obtained either from a CPAN client or from your distribution.
On a Centos 7(+) box, it can be installed this way:
sudo yum install perl-Text-ASCIITable perl-File-Slurp perl-File-Find-Rule perl-Config-General
On a Debian box, the packages could be installed with:
sudo apt-get install libtext-asciitable-perl libfile-slurp-perl libfile-find-rule-perl libconfig-general-perl
The script has been tested on Windows with Strawberry Perl (v5.24.3) with the proper modules installed (the CPAN client can be used for this). A warning is issued though as wc is usually not recognized.
git clone https://github.com/societe-generale/code2pg
The script should then be made executable:
chmod +x code2pg
Besides the complete generated documentation, here a few examples:
- show the command line options of the tool:
./code2pg --help
- give some help on a specific instruction:
./code2pg --help COMMIT
- analyze java files in the current directory with an extension .java and generate an estimation.html report:
./code2pg -e java -l java
- analyze java, jsp and .properties files in the current directory. This will so far need two reports as Oracle instructins will need to be analyzed in "" delimited strings, but directly in .properties files:
./code2pg -e java -e jsp -l java -f myproject_java.html
./code2pg -e properties -l plsql -f myproject_properties.html
- analyze plsql files in two directories with extension .properties and generate a named html report. When SQL files must be analyzed directly (such as pl/sql or .properties files), please configure the language as plsql. For other languages, Oracle instructions will be searched between string delimiters.
./code2pg -e properties -l plsql -d /tmp/project1 -d /tmp/project2 -o project_estimate.html
- analyze java files in a SVN repository and generate a text report:
./code2pg -D svn -d https://mysvnrepo/project/trunk -l java -e java -f txt
- use a configuration file
./code2pg -c code2pg.conf
- minimal output:
Done !
Estimation: 0.19 man-days
- text output:
.----------------------------------------------------------------------------------------------------------------.
| code2pg |
'----------------------------------------------------------------------------------------------------------------'
Version 0.9
Analysis date 05/10/2017
Source code directory /home/user/migration-project/
Number of files with extension .properties 13
Language plsql
Number of analyzed LOC 1826
Log file
orafce usage No
.---------------------------------------------------------------------------------------------------------------.
| | Number of instructions | Time/instruction | Estimated time (minutes) | Man-days |
+-----------------------------+------------------------+------------------+--------------------------+----------+
| Level 1 | 52 | 1 | 52 | 0.14 |
| Level 2 | 106 | 4 | 424 | 1.18 |
| Level 3 | 118 | 8 | 944 | 2.62 |
| Level 4 | 2 | 16 | 32 | 0.09 |
+-----------------------------+------------------------+------------------+--------------------------+----------+
| Application code estimation | 278 | 5.22 | 1452 | 4.03 |
'-----------------------------+------------------------+------------------+--------------------------+----------'
.--------------------------------------.
| Level | Instruction | Number |
+-------+---------------------+--------+
| 1 | DELETE_WITHOUT_FROM | 17 |
| 1 | DUAL | 6 |
| 1 | MAX | 6 |
| 1 | UPPER | 2 |
| 1 | USER | 21 |
+-------+---------------------+--------+
| 2 | COMMIT | 1 |
| 2 | NVL | 28 |
| 2 | ROLLBACK | 1 |
| 2 | SYSDATE | 4 |
| 2 | TO_DATE | 72 |
+-------+---------------------+--------+
| 3 | FIRST | 26 |
| 3 | LAST | 5 |
| 3 | TO_CHAR | 87 |
+-------+---------------------+--------+
| 4 | UID | 2 |
'-------+---------------------+--------'
- html output:
- help output:
[user@localhost curdir]$ ./code2pg -h ADD_MONTHS
ORACLE
======
- Instruction: ADD_MONTHS
- Documentation: http://docs.oracle.com/database/121/SQLRF/functions011.htm
POSTGRESQL
==========
- Postgresql instruction: No equivalent
- Documentation:
- Level 3 - estimated time : 8 minutes.
COMMENTS
========
A function can be created. For example: CREATE OR REPLACE FUNCTION public.add_months(date date, months integer)
RETURNS date
LANGUAGE plpgsql
AS $function$
BEGIN
RETURN (date + (months * '1 month' :: interval)) :: date;
END;
$function$
See CONTRIBUTING.md
License is under the 2-Clause BSD License.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent