createIndex if 'NOT indexExists' fails (version 4.15) #283
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jmayday
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jmayday
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jmayday
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hello, any update on it? |
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Can we have this fixed pls? |
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@r-michal-ah @kb-mendozaACN I don't think it's worth waiting. I've started using Mongock, maybe it will be good choice for you guys. |
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@jmayday unfortunately, we can not introduce more tools. have you tried creating via mongodb:runCommand? I wanted to try it as well, but checking here first, just in case someone already tried and failed too. |
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Sorry, I don't understand. What you mean exactly? |
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I think I tried. But I don't remember exactly, as it was year ago :). I think I exhausted options to use liquibase with Mongo, and there was no support at all (as we see in this thread), so I started checking alternatives and ended up using Mongock. |
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I would love to see this implemented to. The workaround I found was not fail the change set if there was an error. Better than nothing. <?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog
xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
https://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd
http://www.liquibase.org/xml/ns/dbchangelog-ext https://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd">
<!--
Mongo Liquibase does not have a precondition to check if an index exists, so set
failOnError to be false. See https://github.com/liquibase/liquibase-mongodb/issues/283.
-->
<changeSet id="4" author="psc" failOnError="false">
<ext:dropIndex collectionName="testers">
<ext:keys>{firstName: 1}</ext:keys>
</ext:dropIndex>
<rollback>
<ext:createIndex collectionName="testers">
<ext:keys>{firstName: 1}</ext:keys>
<ext:options>{name: "firstName_asc"}</ext:options>
</ext:createIndex>
</rollback>
<comment>
Drops the index on the firstName field in the testers collection
</comment>
</changeSet>
</databaseChangeLog> |
Demo project: https://github.com/jmayday/liquibase-demo
Liquibase version: 4.15.0 #4001 built at 2022-08-05 16:17+0000
I'm adding Liquibase integration to project and I would like to prepare a change set creating indexes if they are missing only. Someone already asked about indexExists precondition here #69 but there was no answer.
This is change set without any precondition and it fails with error below (which is all correct, as there is already index with such name):
The error message (again - all is fine, index is already existing so we can't 2nd one with same name):
But if I extend the changeSet with preConditions, then an exception is being thrown:
The error:
Dependency tree:
When debugging I find method liquibase.snapshot.JdbcDatabaseSnapshot#getMetaDataFromCache to do casting which throws exception because getDatabase().getConnection() is a MongoConnection:
Whole stacktrace below:
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