Update:Remora Database Migration: Difference between revisions

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Revision as of 19:55, 10 October 2006

« Back to Update:Remora

This page is about the migration from the v1 database to the new (remora) database structures.

The Utility

The Python script that does the migration has all sorts of fun features, exciting options, as well as providing thrilling output. It is a wholesome command line program.

Installation

The script is called migration.py and lives in svn at .../trunk/services/bin

The script has two Python library dependencies:

Command Line Options

lars@deerlodge:~/project> ./m1.py -?
m1 0.2
This routine migrates data from the old AMO database schems to the new one.
        -a, --addons
                a quoted comma delimited list of the ids of addons OR the word
                "all" (default: all)
            --clear
                clear all exisiting information from the new database
            --clearAddons
                clear all exisiting addons in the "addons" option list
                information from the new database
        -c, --config
                specify the location and name of the config file 
                (default: ./migration.conf)
        -?, --help
                print this message
        -A, --migrateAddons
                if present, this switch causes the addons in the "addons" 
                option list to be migrated
        -M, --migrateMetaData
                if present, this switch causes the metadata tables to 
                be migrated
            --newDatabaseName
                the name of the new database within the server (default: )
            --newPassword
                the password for the user in the new database (default: )
            --newServerName
                the name of the new database server (default: )
            --newUserName
                the name of the user in the new database (default: )
        -n, --not
                reverses the meaning of the "addon" option.  If the "addon"
                option has a list, then specify everything except what's on 
                the list
            --oldDatabaseName
                the name of the old database within the server (default: )
            --oldPassword
                the password for the user in the old database (default: )
            --oldServerName
                the name of the old database server (default: )
            --oldUserName
                the name of the user in the old database (default: )
            --tests
                run the test cases
        -v, --verbose
                print status information as it runs

Usage examples

Migrate all metadata (-M) and all addons (-A) and talk alot about what's going on (-v): 

lars@deerlodge:~/project> ./m1.py -MAv
2006-08-21 21:05:56.80 beginning migration version 0.2 with options:
        addons=all
        config=./migration.conf
        migrateAddons
        migrateMetaData
        newDatabaseName=noo
        newPassword=**********
        newServerName=deerlodge
        newUserName=lars
        oldDatabaseName=old
        oldPassword=**********
        oldServerName=deerlodge
        oldUserName=lars
        verbose
        version=0.2
2006-08-21 21:05:56.80 beginning metadata migration
2006-08-21 21:05:56.80  clearing metadata tables...
                        done.
2006-08-21 21:05:58.19  beginning applicationsToApplications...
                        done.
2006-08-21 21:05:58.65  beginning categoriesToTags...
                        done.
2006-08-21 21:05:58.76  beginning osToPlatforms...
                        done.
2006-08-21 21:05:58.79  beginning userprofilesToUsers...
                        done.
2006-08-21 21:06:29.47 beginning addons migration
2006-08-21 21:06:29.47  clearing addons tables...
                        done.
2006-08-21 21:06:29.47  beginning mainToAddOns...
                        done.
2006-08-21 21:06:33.21  beginning authorxrefToAddons_users...
                        done.
2006-08-21 21:06:34.87  beginning versionToVerions...
2006-08-21 21:07:02.08  WARNING -- version ID 15798 of addon 2506 for application 79 fails to migrate.
                        (1452, 'Cannot add or update a child row: a foreign key constraint fails 
                          (`noo/applications_versions`, CONSTRAINT `applications_versions_ibfk_1` FOREIGN KEY 
                          (`application_id`) REFERENCES `applications` (`id`))')
2006-08-21 21:07:02.08  WARNING -- version ID 15799 of addon 2507 for application 79 fails to migrate.
                        (1452, 'Cannot add or update a child row: a foreign key constraint fails 
                          (`noo/applications_versions`, CONSTRAINT `applications_versions_ibfk_1` FOREIGN KEY 
                          (`application_id`) REFERENCES `applications` (`id`))')
                        done.
2006-08-21 21:07:09.55  beginning categoryxrefToAddons_tags...
                        done.
2006-08-21 21:07:13.81  beginning previewsToPreviews...
                        done.
done.

Clear all the Addon information from the new database silently: 

lars@deerlodge:~/project> ./m1.py --clearAddons

Copy only addons 3110, 3112 and 3113 to the new database: 

lars@deerlodge:~/project> ./m1.py -A -a 3110,3112,3113 -v
2006-08-21 21:14:42.80 beginning migration version 0.2 with options:
        addons=3110,3112,3113
        config=./migration.conf
        migrateAddons
        newDatabaseName=noo
        newPassword=**********
        newServerName=deerlodge
        newUserName=lars
        oldDatabaseName=old
        oldPassword=**********
        oldServerName=deerlodge
        oldUserName=lars
        verbose
        version=0.2
2006-08-21 21:14:42.80  beginning setupAddonSelectionTable...
                        done.
2006-08-21 21:14:42.97 beginning addons migration
2006-08-21 21:14:42.97  clearing addons tables...
                        done.
2006-08-21 21:14:42.97  beginning mainToAddOns...
                        done.
2006-08-21 21:14:43.01  beginning authorxrefToAddons_users...
                        done.
2006-08-21 21:14:43.02  beginning versionToVerions...
                        done.
2006-08-21 21:14:43.14  beginning categoryxrefToAddons_tags...
                        done.
2006-08-21 21:14:43.17  beginning previewsToPreviews...
                        done.
done.

Copy all addons except 3110, 3112 and 3113 to the new database: 

lars@deerlodge:~/project> ./m1.py -A -na 3110,3112,3113 -v
2006-08-21 21:16:16.01 beginning migration version 0.2 with options:
        addons=3110,3112,3113
        config=./migration.conf
        migrateAddons
        newDatabaseName=noo
        newPassword=**********
        newServerName=deerlodge
        newUserName=lars
        not
        oldDatabaseName=old
        oldPassword=**********
        oldServerName=deerlodge
        oldUserName=lars
        verbose
        version=0.2
2006-08-21 21:16:16.01  beginning setupAddonSelectionTable...
                        done.
2006-08-21 21:16:18.25 beginning addons migration
2006-08-21 21:16:18.25  clearing addons tables...
                        done.
2006-08-21 21:16:18.25  beginning mainToAddOns...
                        done.
2006-08-21 21:16:21.79  beginning authorxrefToAddons_users...
                        done.
2006-08-21 21:16:23.15  beginning versionToVerions...
2006-08-21 21:16:50.91  WARNING -- version ID 15798 of addon 2506 for application 79 fails to migrate.
                        (1452, 'Cannot add or update a child row: a foreign key constraint fails 
                          (`noo/applications_versions`, CONSTRAINT `applications_versions_ibfk_1` FOREIGN KEY 
                          (`application_id`) REFERENCES `applications` (`id`))')
2006-08-21 21:16:50.91  WARNING -- version ID 15799 of addon 2507 for application 79 fails to migrate.
                        (1452, 'Cannot add or update a child row: a foreign key constraint fails 
                          (`noo/applications_versions`, CONSTRAINT `applications_versions_ibfk_1` FOREIGN KEY 
                          (`application_id`) REFERENCES `applications` (`id`))')
                        done.
2006-08-21 21:16:58.47  beginning categoryxrefToAddons_tags...
                        done.
2006-08-21 21:17:02.80  beginning previewsToPreviews...
                        done.
done.

Remove Addons 2506 and 2507 from the new database: 

lars@deerlodge:~/project> ./m1.py --clearAddons -a 2506,2507

Independent Information (metadata)

applications to applications, appversions

Old Database New Database
AppID applications.id
GUID applications.guid
AppName applications.name
major no mapping
minor no mapping
release no mapping
Old Database New Database
AppID appversions.id
AppID appversions.application_id
use AppID for originally encountered application
Version appversions.version
appversions.created
time.now
appversions.modified
use default value

categories to tags

Old Database New Database
CategoryID id
CatName name
CatDesc description
CatType addontype_id
lookup in addontypes.name assuming mapping of E->extensions, T->themes...
CatApp application_id
lookup in applications.name
created
time.now
modified
use default value

os to platforms

Old Database New Database
OSID id
OSName name
OSName shortname
created
time.now
modified
use default value

userprofiles to users

Old Database New Database
UserID id
UserName parse to firstname, lastname
nickname
no source for data, Null not allowed, no default - I put in an empty string
UserEmail email
UserWebsite homepage
UserPass password
UserMode no mapping
UserTrusted no mapping
UserEmailHide emailhidden
UserLastLogin no mapping
ConfirmationCode confirmationcode
created
time.now
modified
use default value
notes
null

authorxref to addons_users

Old Database New Database
ID addon_id
UserID user_id
created
time.now
modified
use default value

add-on specific information (per addon ID)

main to addons

Old Database New Database
ID id
GUID guid
Name name
Type addontype_id
will have to find type in type table
DateAdded created
DateUpdated modified
Homepage homepage
Description description
Rating averagerating
downloadcount weeklydownloads
TotalDownloads totaldownloads
devcomments developercomments
icon
use default value
Description summary
take up to 250 characters, do not break inside a word, add ellipsis if break is not at the end of sentence
inactive
use default value
prerelease
use default value
adminreview
use default value
sitespecific
use default value
externalsoftware
use default value
approvalnotes
use NULL
eula
use NULL
privacypolicy
use NULL

version to versions, files, applications_versions

Old Database New Database
vID versions.id
ID versions.addon_id
Version versions.version
MinAppVer_int
no mapping
MaxAppVer_int
no mapping
DateAdded versions.created
DateApproved versions.dateapproved
DateUpdated versions.modified
Notes versions.releasenotes
addons.approvalnotes
empty string
approved versions.approved
mapping -- "YES": 2, "NO": 3, "?":1, "DISABLED":6
versions.created
time.now
modified
use default value
Old Database New Database
AppID applications_versions.application_id
vID applications_versions.version_id
MinAppVer applications_versions.min
look up in appversions table
ambiguous versions are translated via the technique outlined in update:ToublesInAddonMigration. Missing versions are added to the appversiontable
MaxAppVer applications_versions.max
look up in appversions table
ambiguous versions are translated via the technique outlined in update:ToublesInAddonMigration. Missing versions are added to the appversiontable
applications_versions.created
time.now
applications_versions.modified
use default value
Old Database New Database
id
auto-increment
vID files.version_id
OSID files.platform_id
URI files.filename
use base name only
Size files.size
hash files.hash
DateApproved files.dateapproved
approved files.approved
mapping -- "YES": 2, "NO": 3, "?":1, "DISABLED":6
files.created
time.now
files.modified
use default value

categoryxref to addons_tags

Old Database New Database
ID addon_id
CategoryID tag_id

previews to previews

Old Database New Database
PreviewID id
PreviewURI filename
ID addon_id
caption caption
preview highlight
conversion -- "YES":1, "NO":0
created
time.now
modified
use default value
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