Liquibase无法为Spring Boot / MySQL应用执行

Question

Spring Boot 1.5.8 and Java 8 here. I've followed all the Spring Boot & Liquibase guides and I can't seem to get Liquibase to work.

Here is a link to a GitHub repo for reproducing the issue exactly, but here's the scoop:

I have the following MySQL v8 database that gets created like so ahead of time (before the app runs):

CREATE DATABASE IF NOT EXISTS troubleshooting_db CHARACTER SET utf8 COLLATE utf8_general_ci;

I have the following src/main/resources/db/changelog files:

db.changelog-master.yaml:
===
databaseChangeLog:
- include:
  file: db/changelog/1-setup.sql

1-setup.sql:
===
--liquibase formatted sql

--changeset troubleshooting:1 dbms:mysql
-- LOOKUPS
CREATE TABLE IF NOT EXISTS metric_range_categories (
    metric_range_category_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
    metric_range_category_ref_id VARCHAR(36) NOT NULL,
    metric_range_category_name VARCHAR(250) NOT NULL,
    metric_range_category_label VARCHAR(250) NOT NULL,
    metric_range_category_description VARCHAR(500) NOT NULL,

    CONSTRAINT pk_metric_range_categories PRIMARY KEY (metric_range_category_id),

    INDEX idx_metric_range_categories_metric_range_category_ref_id (metric_range_category_ref_id),
    INDEX idx_metric_range_categories_metric_range_category_label (metric_range_category_label),

    CONSTRAINT uc_metric_range_categories_metric_range_category_ref_id UNIQUE (metric_range_category_ref_id),
    CONSTRAINT uc_metric_range_categories_metric_range_category_name UNIQUE (metric_range_category_name),
    CONSTRAINT uc_metric_range_categories_metric_range_category_label UNIQUE (metric_range_category_label)
);

-- Lots of other CREATE TABLE statements down here...

And the following JPA-annotated entity:

@Entity
@Table(name = "metric_range_categories")
@AttributeOverrides({
        @AttributeOverride(name = "id", column = @Column(name = "metric_range_category_id")),
        @AttributeOverride(name = "refId", column = @Column(name = "metric_range_category_ref_id")),
        @AttributeOverride(name = "name", column = @Column(name = "metric_range_category_name")),
        @AttributeOverride(name = "label", column = @Column(name = "metric_range_category_label")),
        @AttributeOverride(name = "description", column = @Column(name = "metric_range_category_description"))
})
public class MetricRangeCategory extends BaseLookup {
    public MetricRangeCategory() {
    }

    public MetricRangeCategory(Long id, String refId, String name, String label, String description) {
        super(id, refId, name, label, description);
    }
}

At runtime I get the following exception:

Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing table [metric_range_categories]
    at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:67)
    at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:50)
    at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:91)
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:475)
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:879)
    ... 29 common frames omitted

So when it starts up, Liquibase does not excute/engage and so Hibernate JPA validation fails because its looking for a table that doesn't exist (because Liquibase never kicked in and did its job!). Any ideas as to where I'm going awry? Why isn't Liquibase kicking in?

Answer 1

There are 2 different problems in the repo :

1. Wrong location of application.yml. Move it from root to src/main/resources
2. Nested property in TroubleshootingConfig.Machine has null value, because of this bean "authInfo" is not created and context initialization fails. Here is the reference on how Spring Boot Configuration Binding works.