Nacos adapts to oracle11g- modify the source code of Nacos

nacos Only supported by default mysql database , To adapt oracle data source , You must modify the source code before compiling and deploying

One . The source code for

download nacos: link Source code , When the download is complete, switch the branch to feature_multiple_datasource_support

Two . jar Package introduction and replacement

Because this branch supports oracle12c, The driver package version needs to be changed

1.nacos-all Next pom File modification

<properties>
		...
        <!--     remove ojdbc8 Dependent version     -->
        <!--        <ojdbc.version>19.3.0.0</ojdbc.version>-->
        <!--      change oracle Version is ojdbc7-->
        <ojdbc.version>12.1.0.1.0</ojdbc.version>
        ...
</properties>

<!--  Manage dependent version numbers , Subprojects do not depend on... By default  -->
<dependencyManagement>
    <dependencies>
    ...
         <!-- oracle package  -->
         <dependency>
             <groupId>com.oracle</groupId>
             <artifactId>ojdbc7</artifactId>
             <version>${ojdbc.version}</version>
         </dependency>
	...
<!-- remove ojdbc8 Dependent version -->
<!--            <dependency>-->
<!--                <groupId>com.oracle.ojdbc</groupId>-->
<!--                <artifactId>ojdbc8</artifactId>-->
<!--                <version>${ojdbc.version}</version>-->
<!--            </dependency>-->
...
    </dependencies>
</dependencyManagement>

2.nacos-config Of pom The file is added to introduce the database driver that needs to be supported , And cancel oracle High version driver is introduced

<!--        <dependency>-->
<!--            <groupId>com.oracle.ojdbc</groupId>-->
<!--            <artifactId>ojdbc8</artifactId>-->
<!--        </dependency>-->
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc7</artifactId>
        </dependency>

3、 ... and . Logical modification of the primary key of the database mapping entity 【 It needs to be used with subsequent sequence statements 】

because mysql It uses a self increasing sequence ,oracle11g Does not support , So it's using jpa You need to specify the primary key and the name of the index used , The entity class needs to be modified

1. nacos-config Next

com.alibaba.nacos.config.server.modules.entity
Here is just one example , The blue part is modified

It should be noted that PermissionsEntity Class resource Field , the reason being that oracle Database keywords , All statements in the table under construction （ Download table creation statement ） Modified as resources, You need to modify the corresponding fields

/**
     * resource.
     */
    @Column(name = "resources")
    private String resource;

Four . modify nacos-console The configuration file application.properties

# oracle Database configuration 
nacos.datasource.type=ORACLE

nacos.datasource.relational.dsList[0].url=jdbc:oracle:thin:@xxx:1521:orcl
nacos.datasource.relational.dsList[0].username=xxx
nacos.datasource.relational.dsList[0].password=xxx
nacos.datasource.relational.dsList[0].driver-class-name=oracle.jdbc.driver.OracleDriver
nacos.datasource.relational.dsList[0].hikari.connection-timeout=10000
nacos.datasource.relational.dsList[0].hikari.idle-timeout=120000
nacos.datasource.relational.dsList[0].hikari.max-lifetime=240000
nacos.datasource.relational.dsList[0].hikari.maximum-pool-size=20
nacos.datasource.relational.dsList[0].hikari.data-source-properties.cachePrepStmts=true
nacos.datasource.relational.dsList[0].hikari.data-source-properties.prepStmtCacheSize=250
nacos.datasource.relational.dsList[0].hikari.data-source-properties.prepStmtCacheSqlLimit=2048
nacos.datasource.relational.dsList[0].hikari.connection-test-query=SELECT 1 FROM dual

5、 ... and .idea Start the stand alone nacos debug

nacos-console Modular Nacos Start class

Stand alone mode starts , environment variable -Dnacos.standalone=true

6、 ... and . Boot failure , No symbols found

If an error is reported and no symbol is found com.alibaba.nacos.consistency.entity

The simplest way is to execute mvn compile, The reason is that the package directory is made up of protobuf Automatically generated at compile time
Restart it

7、 ... and . Access page ,localhost:8848/nacos user / password ：nacos/nacos