You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2022/02/25 09:54:18 UTC
[GitHub] [shardingsphere] wsg96321 opened a new issue #15636: Exception with No implementation class load from SPI
wsg96321 opened a new issue #15636:
URL: https://github.com/apache/shardingsphere/issues/15636
version : v5.1.0 sharding-jdbc
hello , below is the code of my own :
```
public final class DatabaseHintShardingAlgorithm implements HintShardingAlgorithm<String> {
@Override
public Collection<String> doSharding(Collection<String> availableTargetNames, HintShardingValue<String> shardingValue) {
Collection<String> result = new ArrayList<>();
for (String each : availableTargetNames) {
for (String value : shardingValue.getValues()) {
String[] values = value.split(",");
for (String s : values) {
if (each.endsWith("_" + s)) {
result.add(each);
}
}
}
}
return result;
}
@Override
public void init() {
}
@Override
public String getType() {
return "COMMON_SHARD";
}
}
```
But when I use it in my test code it report ERROR:
```
File ymlfile = new File(HintAlgorithmTest.class.getResource("/META-INF/config-xx.yaml").getFile());
dataSource = YamlShardingSphereDataSourceFactory.createDataSource(ymlfile);
```
```
Exception in thread "main" org.apache.shardingsphere.spi.exception.ServiceProviderNotFoundException: No implementation class load from SPI `org.apache.shardingsphere.sharding.spi.ShardingAlgorithm` with type `COMMON_SHARD`.
at org.apache.shardingsphere.spi.typed.TypedSPIRegistry.getRegisteredService(TypedSPIRegistry.java:76)
at org.apache.shardingsphere.infra.config.algorithm.ShardingSphereAlgorithmFactory.createAlgorithm(ShardingSphereAlgorithmFactory.java:41)
at org.apache.shardingsphere.sharding.rule.ShardingRule.lambda$new$0(ShardingRule.java:109)
at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
at org.apache.shardingsphere.sharding.rule.ShardingRule.<init>(ShardingRule.java:109)
at org.apache.shardingsphere.sharding.rule.builder.ShardingRuleBuilder.build(ShardingRuleBuilder.java:41)
at org.apache.shardingsphere.sharding.rule.builder.ShardingRuleBuilder.build(ShardingRuleBuilder.java:35)
at org.apache.shardingsphere.infra.rule.builder.schema.SchemaRulesBuilder.buildRules(SchemaRulesBuilder.java:63)
at org.apache.shardingsphere.mode.metadata.MetaDataContextsBuilder.getSchemaRules(MetaDataContextsBuilder.java:85)
at org.apache.shardingsphere.mode.metadata.MetaDataContextsBuilder.addSchema(MetaDataContextsBuilder.java:77)
at org.apache.shardingsphere.mode.manager.memory.MemoryContextManagerBuilder.build(MemoryContextManagerBuilder.java:47)
at org.apache.shardingsphere.driver.jdbc.core.datasource.ShardingSphereDataSource.createContextManager(ShardingSphereDataSource.java:81)
at org.apache.shardingsphere.driver.jdbc.core.datasource.ShardingSphereDataSource.<init>(ShardingSphereDataSource.java:64)
at org.apache.shardingsphere.driver.api.ShardingSphereDataSourceFactory.createDataSource(ShardingSphereDataSourceFactory.java:77)
at org.apache.shardingsphere.driver.api.yaml.YamlShardingSphereDataSourceFactory.createDataSource(YamlShardingSphereDataSourceFactory.java:132)
at org.apache.shardingsphere.driver.api.yaml.YamlShardingSphereDataSourceFactory.createDataSource(YamlShardingSphereDataSourceFactory.java:61)
```
below is my config :
```
schemaName: test
dataSources:
ds_1:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.jdbc.Driver
url: jdbc:mysql://10.0.0.1:3306/player_90001
username: test
password: test
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 10
ds_2:
dataSourceClassName: com.zaxxer.hikari.HikariDataSource
driverClassName: com.mysql.jdbc.Driver
url: jdbc:mysql://10.0.0.2:3306/player_90002
username: test
password: test
connectionTimeoutMilliseconds: 30000
idleTimeoutMilliseconds: 60000
maxLifetimeMilliseconds: 1800000
maxPoolSize: 10
rules:
- !SHARDING
tables:
hero:
actualDataNodes: ds_${1..2}.hero
bindingTables:
- hero
defaultDatabaseStrategy:
hint:
shardingAlgorithmName: hint-common
defaultTableStrategy:
none:
shardingAlgorithms:
hint-common:
type: COMMON_SHARD
props:
sql-show: true
```
I found it is seems to this issues : [(https://github.com/apache/shardingsphere/issues/12703)](https://github.com/apache/shardingsphere/issues/12703)
Then I have read the code with [https://github.com/apache/shardingsphere/blob/5.1.0/examples/shardingsphere-proxy-example/shardingsphere-proxy-hint-example/.../shardingsphere/example/proxy/hint/ModuloHintShardingAlgorithm.java](https://github.com/apache/shardingsphere/blob/5.1.0/examples/shardingsphere-proxy-example/shardingsphere-proxy-hint-example/src/main/java/org/apache/shardingsphere/example/proxy/hint/ModuloHintShardingAlgorithm.java), but find no idea to deal with this problem.
PS: this is my structure with project though I don't know why need to use directory `META-INF` and `services`, and it is unuse .
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@shardingsphere.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [shardingsphere] wsg96321 closed issue #15636: Exception with No implementation class load from SPI
Posted by GitBox <gi...@apache.org>.
wsg96321 closed issue #15636:
URL: https://github.com/apache/shardingsphere/issues/15636
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@shardingsphere.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [shardingsphere] wsg96321 commented on issue #15636: Exception with No implementation class load from SPI
Posted by GitBox <gi...@apache.org>.
wsg96321 commented on issue #15636:
URL: https://github.com/apache/shardingsphere/issues/15636#issuecomment-1053810649
Thanks a lot . I think I have resolve this problem . It's my mistake for the wrong file name in services. The file name in /META-INF/services must be `org.apache.shardingsphere.sharding.spi.ShardingAlgorithm`. This is my test project , hope to it can help others.
[https://github.com/wsg96321/sharding-project.git](https://github.com/wsg96321/sharding-project.git)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@shardingsphere.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org
[GitHub] [shardingsphere] zjcnb commented on issue #15636: Exception with No implementation class load from SPI
Posted by GitBox <gi...@apache.org>.
zjcnb commented on issue #15636:
URL: https://github.com/apache/shardingsphere/issues/15636#issuecomment-1050712131
@wsg96321 Hi, Can your provider your project ? Maybe your META-INF/services structure has problem. https://github.com/apache/shardingsphere/blob/master/examples/shardingsphere-jdbc-example/single-feature-example/sharding-example/sharding-raw-jdbc-example/src/main/java/org/apache/shardingsphere/example/sharding/raw/jdbc/ShardingHintRawExample.java
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscribe@shardingsphere.apache.org
For queries about this service, please contact Infrastructure at:
users@infra.apache.org