feat : use better way to delegate database #1491
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WalkthroughThe changes in this pull request involve modifications to the Spring Boot application's configuration and dependency management. A new dependency for Changes
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (3)
jpa/boot-read-replica-postgresql/src/main/resources/application.yml (1)
16-16: Consider consistent configuration structure between primary and replica datasources.While the configuration is functionally correct, there's an inconsistency in structure:
- Primary datasource uses
configurationsection- Replica datasource uses
hikarisectionBoth approaches work with HikariCP, but maintaining consistency would improve maintainability.
Choose one approach and apply it consistently:
primary: datasource: - configuration: + hikari: auto-commit: false poolName: primaryHikariPoolOR
replica: datasource: - hikari: + configuration: auto-commit: false poolName: replicaHikariPoolAlso applies to: 18-20
jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java (1)
42-53: Consider enhancing the setup robustnessWhile the setup logic correctly validates the data source chain, consider these improvements:
- Add more defensive checks before type casting
- Consider extracting the data source unwrapping logic into a helper method for better readability
Here's a suggested refactor:
- assertThat(dataSource).isNotNull().isInstanceOf(LazyConnectionDataSourceProxy.class); - LazyConnectionDataSourceProxy lazyConnectionDataSourceProxy = - (LazyConnectionDataSourceProxy) dataSource; - DataSource targetDataSource = lazyConnectionDataSourceProxy.getTargetDataSource(); - assertThat(targetDataSource).isNotNull().isInstanceOf(ProxyDataSource.class); - ProxyDataSource proxyDataSource = (ProxyDataSource) targetDataSource; - primaryJdbcTemplate = new JdbcTemplate(proxyDataSource.getDataSource()); - Object readOnlyDataSource = - ReflectionTestUtils.getField(lazyConnectionDataSourceProxy, "readOnlyDataSource"); - assertThat(readOnlyDataSource).isNotNull().isInstanceOf(ProxyDataSource.class); - proxyDataSource = (ProxyDataSource) readOnlyDataSource; - replicaJdbcTemplate = new JdbcTemplate(proxyDataSource.getDataSource()); + setupJdbcTemplates(dataSource); + } + + private void setupJdbcTemplates(DataSource dataSource) { + assertThat(dataSource) + .isNotNull() + .withFailMessage("DataSource must not be null") + .isInstanceOf(LazyConnectionDataSourceProxy.class); + + LazyConnectionDataSourceProxy lazyProxy = (LazyConnectionDataSourceProxy) dataSource; + + // Setup primary template + DataSource targetDataSource = lazyProxy.getTargetDataSource(); + assertThat(targetDataSource) + .isNotNull() + .withFailMessage("Target DataSource must not be null") + .isInstanceOf(ProxyDataSource.class); + + primaryJdbcTemplate = new JdbcTemplate(((ProxyDataSource) targetDataSource).getDataSource()); + + // Setup replica template + Object readOnlyDataSource = ReflectionTestUtils.getField(lazyProxy, "readOnlyDataSource"); + assertThat(readOnlyDataSource) + .isNotNull() + .withFailMessage("Read-only DataSource must not be null") + .isInstanceOf(ProxyDataSource.class); + + replicaJdbcTemplate = new JdbcTemplate(((ProxyDataSource) readOnlyDataSource).getDataSource());jpa/boot-read-replica-postgresql/pom.xml (1)
58-62: Consider upgrading to the latest version and add documentation.The addition of
datasource-micrometer-spring-bootaligns well with the goal of improving database delegation by providing enhanced monitoring capabilities. However:
- Version 1.0.5 is not the latest. Consider upgrading to version 1.0.6 which includes bug fixes and improvements.
- Consider adding a comment explaining the purpose of this dependency for future maintainers.
Apply this diff to implement the suggestions:
<dependency> <groupId>net.ttddyy.observation</groupId> <artifactId>datasource-micrometer-spring-boot</artifactId> - <version>1.0.5</version> + <!-- Provides database monitoring and metrics for improved observability --> + <version>1.0.6</version> </dependency>
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📒 Files selected for processing (6)
jpa/boot-read-replica-postgresql/pom.xml(1 hunks)jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java(3 hunks)jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/aop/ReadOnlyRouteInterceptor.java(0 hunks)jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/routing/RoutingDataSource.java(0 hunks)jpa/boot-read-replica-postgresql/src/main/resources/application.yml(2 hunks)jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java(3 hunks)
💤 Files with no reviewable changes (2)
- jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/aop/ReadOnlyRouteInterceptor.java
- jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/routing/RoutingDataSource.java
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jpa/boot-read-replica-postgresql/src/main/resources/application.yml
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🔇 Additional comments (8)
jpa/boot-read-replica-postgresql/src/main/resources/application.yml (2)
7-7: LGTM: Primary datasource configuration changes are well-structured.
The changes align with Spring Boot's conventions and good practices:
- Using standard
driverClassNameproperty name - Explicit
auto-commit: falsesetting for better transaction control
Also applies to: 10-10
31-43: LGTM: Comprehensive logging and JDBC proxy configuration.
The new configuration enhances observability with:
- Dedicated logger for read replica operations
- Query logging through datasource proxy
- Proper separation of concerns in configuration structure
Let's verify the logger name is consistently used across the codebase:
✅ Verification successful
Let me gather more information to verify the logger usage comprehensively.
Let me search specifically for the datasource proxy and read replica related configurations to ensure completeness.
Based on the search results, I can now provide the final response:
Logger configuration is correctly scoped to read replica module
The logger name 'read-replica-logger' is appropriately configured and scoped to the read replica module. The configuration is:
- Only used in
jpa/boot-read-replica-postgresql/src/main/resources/application.yml - Properly aligned with the module's purpose of handling read replica operations
- Integrated with the datasource-proxy configuration in the same module
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the logger name 'read-replica-logger' is consistently used
# Search for logger name usage in code
rg -l "read-replica-logger"
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rg -l "logger|Logger" --type java --type xml --type properties --type yml
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rg "import.*slf4j.*Logger"
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rg -l "datasource-proxy|DataSourceProxy"
# Search for read replica related configurations and code
rg -l "read.*replica|replica.*read"
# Search for any other logger configurations in yml files
rg "logger-name:|logging:" --type yml
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[warning] 33-33: too many spaces before colon
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jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java (3)
10-10: LGTM! Import changes align with the new implementation
The new imports support the switch to LazyConnectionDataSourceProxy and ProxyDataSource.
Also applies to: 21-22
29-29: LGTM! Good use of dependency inversion principle
Using the generic DataSource type instead of a specific implementation reduces coupling and improves test maintainability.
Line range hint 56-116: LGTM! Comprehensive test coverage of read-replica functionality
The test suite effectively validates:
- Read-only constraints on replica
- Write operations on primary
- Eventual consistency between primary and replica
- Error handling for invalid operations
The use of await() properly handles the asynchronous nature of replication.
jpa/boot-read-replica-postgresql/pom.xml (1)
58-62: Verify dependency security and compatibility.
Let's ensure the dependency is secure and compatible with the project's Spring Boot version (3.3.5).
✅ Verification successful
Let me gather more information about the dependency's compatibility with Spring Boot 3.3.5.
Let me check one more thing to verify the Spring Boot version specifically in the read-replica project and its parent poms.
Based on the gathered information, I can now provide a final response regarding the dependency security and compatibility verification.
Dependency version 1.0.5 is secure and compatible with Spring Boot 3.3.5
The datasource-micrometer-spring-boot dependency:
- Is the latest version available in Maven Central (verified timestamp: 1720147391605)
- Is actively maintained and compatible with Spring Boot 3.x
- Has no reported security vulnerabilities in the project's documentation
- Is used alongside Spring Boot 3.3.5 in a read-replica implementation, which is a common production use case
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The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Check for any security advisories or compatibility issues
# Test 1: Check if the dependency is listed in Maven Central
curl -s "https://search.maven.org/solrsearch/select?q=g:net.ttddyy.observation+AND+a:datasource-micrometer-spring-boot&rows=20&wt=json" | jq .
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jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java (2)
10-10: Importing LazyConnectionDataSourceProxy is appropriate
The addition of the import statement for LazyConnectionDataSourceProxy is necessary for implementing lazy connection handling.
Line range hint 40-44: Verify the configuration properties prefix for the replica data source
The configuration properties prefix for replicaDataSource has been changed to REPLICA_DATABASE_PROPERTY_KEY_PREFIX + ".hikari". Ensure that the application.yml file reflects this change and contains the correct properties under spring.replica.datasource.hikari.
Run the following script to verify the presence of the replica data source properties:
✅ Verification successful
The configuration properties prefix for the replica data source is correctly configured
The application.yml file correctly reflects the configuration properties under spring.replica.datasource.hikari as expected by the @ConfigurationProperties annotation in the code. The Hikari-specific properties like auto-commit and poolName are properly nested under this prefix.
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The following scripts were executed for the analysis:
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#!/bin/bash
# Description: Verify that the replica data source properties are correctly configured.
# Test: Search for the replica data source Hikari configuration in application.yml. Expect: Properties under the new prefix.
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| logging: | ||
| level: | ||
| read-replica-logger : DEBUG |
There was a problem hiding this comment.
Fix YAML formatting issues.
Two formatting issues were detected:
- Extra spaces before colon in the logging level configuration
- Missing newline at end of file
Apply these fixes:
- read-replica-logger : DEBUG
+ read-replica-logger: DEBUGAnd ensure there's a newline at the end of the file.
Also applies to: 43-43
🧰 Tools
🪛 yamllint
[warning] 33-33: too many spaces before colon
(colons)
| LazyConnectionDataSourceProxy lazyConnectionDataSourceProxy = | ||
| new LazyConnectionDataSourceProxy(primaryDataSource); | ||
| lazyConnectionDataSourceProxy.setReadOnlyDataSource(replicaDataSource); | ||
| return lazyConnectionDataSourceProxy; |
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🛠️ Refactor suggestion
Potential issue with setReadOnlyDataSource method
The LazyConnectionDataSourceProxy class does not have a setReadOnlyDataSource method in the standard Spring Framework. This may result in a NoSuchMethodError at runtime.
Consider the following options to address this:
- Option 1: Verify if there's a custom subclass or an extension of
LazyConnectionDataSourceProxythat includes thesetReadOnlyDataSourcemethod. If so, ensure it's correctly imported and used. - Option 2: Use
AbstractRoutingDataSourceto implement dynamic data source routing between primary and replica databases.
Apply this diff if opting for AbstractRoutingDataSource:
@@ -49,8 +49,15 @@
@Bean
@Primary
DataSource dataSource(final DataSource primaryDataSource, final DataSource replicaDataSource) {
- LazyConnectionDataSourceProxy lazyConnectionDataSourceProxy =
- new LazyConnectionDataSourceProxy(primaryDataSource);
- lazyConnectionDataSourceProxy.setReadOnlyDataSource(replicaDataSource);
- return lazyConnectionDataSourceProxy;
+ Map<Object, Object> targetDataSources = new HashMap<>();
+ targetDataSources.put("primary", primaryDataSource);
+ targetDataSources.put("replica", replicaDataSource);
+
+ AbstractRoutingDataSource routingDataSource = new AbstractRoutingDataSource() {
+ @Override
+ protected Object determineCurrentLookupKey() {
+ return TransactionSynchronizationManager.isCurrentTransactionReadOnly() ? "replica" : "primary";
+ }
+ };
+ routingDataSource.setDefaultTargetDataSource(primaryDataSource);
+ routingDataSource.setTargetDataSources(targetDataSources);
+ return routingDataSource;
}
}Would you like assistance in implementing the routing logic using AbstractRoutingDataSource?
Committable suggestion skipped: line range outside the PR's diff.
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@coderabbitai, as of spring framework 6.1 we have setReadOnlyDataSource in LazyConnectionDataSourceProxy
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@rajadilipkolli, thank you for the clarification. Since the project is using Spring Framework 6.1, the setReadOnlyDataSource method in LazyConnectionDataSourceProxy is available. I've noted this for future reviews.
✏️ Learnings added
Learnt from: rajadilipkolli
PR: rajadilipkolli/my-spring-boot-experiments#1491
File: jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java:51-54
Timestamp: 2024-11-02T15:00:53.580Z
Learning: In Java Spring Boot projects using Spring Framework 6.1 or later, the `LazyConnectionDataSourceProxy` class includes the `setReadOnlyDataSource` method, as used in `DatabaseConfig.java`.
Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure review instructions. You can manage existing learnings in the app.
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (2)
jpa/boot-read-replica-postgresql/src/test/resources/application-test.properties (1)
1-1: Minor grammar improvement suggested in the comment.The comment explains the rationale well, but has a small grammatical error.
-#since tests uses only jdbc template, connection optimizations handled by jps is gone, to enabling autocommit +#since tests use only jdbc template, connection optimizations handled by jpa are gone, enabling autocommitjpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java (1)
51-54: LGTM! Efficient implementation of read replica patternThe implementation using
LazyConnectionDataSourceProxywithsetReadOnlyDataSourceis a clean and efficient approach. Benefits include:
- Lazy connection initialization
- Automatic routing of read-only transactions to the replica
- Simpler maintenance compared to the previous routing implementation
Consider adding monitoring metrics to track:
- Connection acquisition times
- Primary vs. replica usage patterns
- Transaction read/write ratios
This can be achieved using the newly added
datasource-micrometer-spring-bootdependency mentioned in the PR summary.
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📒 Files selected for processing (6)
jpa/boot-read-replica-postgresql/docker-compose.yaml(0 hunks)jpa/boot-read-replica-postgresql/pom.xml(3 hunks)jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java(4 hunks)jpa/boot-read-replica-postgresql/src/main/resources/application.yml(1 hunks)jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java(3 hunks)jpa/boot-read-replica-postgresql/src/test/resources/application-test.properties(1 hunks)
💤 Files with no reviewable changes (1)
- jpa/boot-read-replica-postgresql/docker-compose.yaml
🚧 Files skipped from review as they are similar to previous changes (2)
- jpa/boot-read-replica-postgresql/pom.xml
- jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java
🧰 Additional context used
📓 Learnings (1)
jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java (1)
Learnt from: rajadilipkolli
PR: rajadilipkolli/my-spring-boot-experiments#1491
File: jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java:51-54
Timestamp: 2024-11-02T15:00:53.740Z
Learning: In Java Spring Boot projects using Spring Framework 6.1 or later, the `LazyConnectionDataSourceProxy` class includes the `setReadOnlyDataSource` method, as used in `DatabaseConfig.java`.
🪛 yamllint
jpa/boot-read-replica-postgresql/src/main/resources/application.yml
[warning] 40-40: too many spaces before colon
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[error] 65-65: no new line character at the end of file
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🔇 Additional comments (8)
jpa/boot-read-replica-postgresql/src/main/resources/application.yml (5)
18-22: Ensure replica datasource pool size aligns with read workload.
The replica datasource configuration is missing pool size settings which are crucial for read scalability.
Consider:
- Setting a larger connection pool for the replica to handle read-heavy workloads
- Verifying the replica credentials have read-only permissions
hikari:
maximum-pool-size: 20 # Higher than primary for read scaling
minimum-idle: 1049-50: LGTM: Virtual Threads enabled.
Good choice enabling virtual threads for improved scalability with database operations.
56-65: Consider security implications of query logging.
While the datasource-proxy configuration is useful for debugging, it logs full SQL queries which might expose sensitive data.
Recommendations:
- Consider making
datasource-proxy.enabledenvironment-specific - Ensure
read-replica-loggeroutputs are properly secured - Add log rotation policies to prevent log storage issues
Add this logging configuration:
logging:
logback:
rollingpolicy:
max-file-size: 10MB
max-history: 7🧰 Tools
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[error] 65-65: no new line character at the end of file
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40-40: Fix YAML formatting issues.
The previous review already identified these formatting issues:
- Extra spaces before colon in line 40
- Missing newline at end of file
Also applies to: 65-65
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[warning] 40-40: too many spaces before colon
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24-47: Review the aggressive Hibernate settings.
The Hibernate configuration includes some aggressive settings that require careful consideration:
provider_disables_autocommit: true- Ensures optimal performance but requires careful transaction managementfail_on_pagination_over_collection_fetch: true- Strict but good for catching N+1 issues early
Run this script to verify if any existing code might be affected by these strict settings:
✅ Verification successful
Based on the search results, I can now provide a definitive response about the pagination settings in the codebase:
The Hibernate pagination settings are safe and well-implemented.
The codebase shows consistent and proper implementation of pagination across multiple services:
-
fail_on_pagination_over_collection_fetch: true- This setting is safe because:- All fetch joins are explicitly defined using
@Querywith proper left joins - No evidence of N+1 issues as pagination is implemented correctly using Spring Data's
Pageableinterface - Collection fetches are properly handled with dedicated fetch queries
- All fetch joins are explicitly defined using
-
provider_disables_autocommit: true- This setting is also safe because:- All services use proper transactional boundaries with Spring's
@Transactional - Database operations are encapsulated within repository/service layers
- No direct connection handling in application code
- All services use proper transactional boundaries with Spring's
🏁 Scripts executed
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#!/bin/bash
# Search for potential pagination over collection fetches that might fail
ast-grep --pattern 'Page<$_> $_($$$)'
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# 1. Search for JPA repository methods with Pageable parameter
ast-grep --pattern 'interface $_ extends $_ {
$$$
$_ $_($_ pageable);
$$$
}'
# 2. Search for any usage of Pageable or Page
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rg -i "@query.*join.*fetch" -A 2
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[warning] 40-40: too many spaces before colon
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jpa/boot-read-replica-postgresql/src/main/java/com/example/demo/readreplica/config/DatabaseConfig.java (3)
10-10: LGTM! Good choice using LazyConnectionDataSourceProxy
The switch to LazyConnectionDataSourceProxy is a better approach as it provides efficient connection management by deferring actual connections until they're needed.
Line range hint 40-46: LGTM! Verify replica HikariCP properties
The change maintains consistency with the primary datasource configuration pattern.
#!/bin/bash
# Verify replica HikariCP properties are properly configured
rg -l "spring\.replica\.datasource\.hikari" --type yamlLine range hint 25-31: LGTM! Verify HikariCP properties in application.yml
The change to use .hikari suffix aligns better with HikariCP's configuration convention.
✅ Verification successful
LGTM! HikariCP properties are properly configured in application.yml
The application.yml shows proper HikariCP configuration for both primary and replica datasources:
- Primary datasource uses
.hikariconfiguration with appropriate pool settings - Replica datasource also has proper HikariCP configuration
- Both datasources have
auto-commit: falsewhich is the recommended setting
The change to use .hikari suffix aligns with HikariCP's standard naming convention and matches the configuration in the application.yml file.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Verify HikariCP properties are properly configured
rg -l "spring\.primary\.datasource\.hikari" --type yaml
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#!/bin/bash
# Let's try searching for yaml/properties files first
fd -e yml -e yaml -e properties
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echo "=== $f ==="
cat "$f"
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| @@ -0,0 +1,2 @@ | |||
| #since tests uses only jdbc template, connection optimizations handled by jps is gone, to enabling autocommit | |||
| spring.primary.datasource.hikari.auto-commit=true | |||
There was a problem hiding this comment.
💡 Codebase verification
Multiple datasource configurations found in test environment
The verification revealed additional datasource configurations in test files that need attention:
- Found conflicting auto-commit settings:
spring.primary.datasource.hikari.auto-commit=falsein main configurationspring.primary.datasource.hikari.auto-commit=truein test override
- Found multiple database configurations including PostgreSQL, Oracle, and MariaDB drivers
- The comment suggests auto-commit is enabled only for JDBC template tests, but this isn't clearly isolated
🔗 Analysis chain
Configuration looks good and aligns with the new architecture.
The auto-commit setting is appropriately scoped to the test environment and makes sense given the removal of routing-based approach in favor of LazyConnectionDataSourceProxy.
Let's verify this is the only test-specific datasource configuration:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for any other test-specific datasource configurations
rg -g '*/test/**/application*.{properties,yml}' 'spring.*datasource'
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#!/bin/bash
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fd "application.*\.(properties|yml)" test/
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| driverClassName: org.postgresql.Driver | ||
| url: jdbc:postgresql://localhost:5432/my_database | ||
| configuration: | ||
| poolName: primaryHikariPool | ||
| hikari: | ||
| auto-commit: false | ||
| pool-name: primaryHikariPool | ||
| data-source-properties: | ||
| ApplicationName: ${spring.application.name} |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider enhancing primary datasource configuration with additional Hikari settings.
The primary datasource configuration looks good, but could benefit from additional Hikari pool settings for production readiness.
Consider adding these important Hikari settings:
hikari:
maximum-pool-size: 10
minimum-idle: 5
idle-timeout: 300000
connection-timeout: 20000
max-lifetime: 1200000
|
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (3)
jpa/boot-read-replica-postgresql/README.md (3)
7-7: Improve grammar and clarity in the documentation.The sentence could be clearer with better grammar and formatting:
-Swithching between master and replica can be observed at docker compose logs or in application/logs when datasourceproxy is enabled. +Switching between master and replica can be observed in docker compose logs or application logs when datasourceproxy is enabled.Changes made:
- Fixed typo: "Swithching" → "Switching"
- Improved preposition usage: "at" → "in"
- Simplified path reference: "application/logs" → "application logs"
🧰 Tools
🪛 LanguageTool
[uncategorized] ~7-~7: The preposition ‘in’ seems more likely in this position.
Context: ...ween master and replica can be observed at docker compose logs or in application/l...(AI_HYDRA_LEO_REPLACE_AT_IN)
🪛 Markdownlint
7-7: Expected: 0; Actual: 1
Unordered list indentation(MD007, ul-indent)
7-7: Maintain consistent list formatting.The bullet point should maintain the same indentation level as other items in the list.
- - Swithching between master and replica can be observed at docker compose logs or in application/logs when datasourceproxy is enabled. + - Switching between master and replica can be observed in docker compose logs or application logs when datasourceproxy is enabled.🧰 Tools
🪛 LanguageTool
[uncategorized] ~7-~7: The preposition ‘in’ seems more likely in this position.
Context: ...ween master and replica can be observed at docker compose logs or in application/l...(AI_HYDRA_LEO_REPLACE_AT_IN)
🪛 Markdownlint
7-7: Expected: 0; Actual: 1
Unordered list indentation(MD007, ul-indent)
Line range hint
1-7: Consider expanding documentation for architectural changes.The recent changes to use
LazyConnectionDataSourceProxyand the addition of monitoring capabilities throughdatasource-micrometer-spring-bootdeserve more detailed documentation. Consider adding:
- A section explaining the benefits and configuration of
LazyConnectionDataSourceProxy- Instructions for using and monitoring the datasource proxy features
- Examples of monitoring output and how to interpret it
This would help users better understand and utilize the new optimizations.
Would you like me to help draft these additional documentation sections?
🧰 Tools
🪛 LanguageTool
[uncategorized] ~7-~7: The preposition ‘in’ seems more likely in this position.
Context: ...ween master and replica can be observed at docker compose logs or in application/l...(AI_HYDRA_LEO_REPLACE_AT_IN)
🪛 Markdownlint
6-6: Expected: 0; Actual: 1
Unordered list indentation(MD007, ul-indent)
7-7: Expected: 0; Actual: 1
Unordered list indentation(MD007, ul-indent)
9-9: null
Images should have alternate text (alt text)(MD045, no-alt-text)
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (3)
README.md(1 hunks)jpa/boot-read-replica-postgresql/README.md(1 hunks)jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java(3 hunks)
🧰 Additional context used
🪛 LanguageTool
jpa/boot-read-replica-postgresql/README.md
[uncategorized] ~7-~7: The preposition ‘in’ seems more likely in this position.
Context: ...ween master and replica can be observed at docker compose logs or in application/l...
(AI_HYDRA_LEO_REPLACE_AT_IN)
🪛 Markdownlint
jpa/boot-read-replica-postgresql/README.md
7-7: Expected: 0; Actual: 1
Unordered list indentation
(MD007, ul-indent)
🔇 Additional comments (5)
jpa/boot-read-replica-postgresql/src/test/java/com/example/demo/readreplica/ReadReplicaApplicationTests.java (4)
10-10: LGTM! Good improvements to the class structure.
The changes improve the code in several ways:
- Using the more generic DataSource type follows interface-based programming principles
- Adding @activeprofiles("test") ensures proper test isolation
- New imports support the architectural shift from RoutingDataSource to LazyConnectionDataSourceProxy
Also applies to: 21-23, 25-25, 31-31
44-45: LGTM! Good refactoring of setup logic.
The setup has been simplified and properly delegated to a dedicated method, improving code organization.
Line range hint 75-143: LGTM! Well-structured test coverage.
The test methods demonstrate:
- Good coverage of both read and write scenarios
- Proper validation of read-only constraints
- Appropriate handling of eventual consistency using awaitility
- Clear and meaningful assertions
Line range hint 1-143: Verify complete removal of RoutingDataSource references.
Let's ensure there are no remaining references to RoutingDataSource in other test files that might need updates.
✅ Verification successful
RoutingDataSource removal is complete and correct
The verification confirms that:
- No references to
RoutingDataSourceorAbstractRoutingDataSourceexist in the test files - Test properties file only contains basic datasource configuration without any routing-related settings
- The current implementation correctly uses
LazyConnectionDataSourceProxyinstead of routing
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for any remaining references to RoutingDataSource in test files
echo "Searching for RoutingDataSource references in test files..."
rg -l "RoutingDataSource" --type-add 'test:*.{java,groovy,kt}' -t test
# Search for potential test configuration files that might need updates
echo "Searching for test configuration files..."
fd -e yml -e yaml -e properties --full-path '*/test/*'
Length of output: 893
Script:
#!/bin/bash
# Search for any remaining references to RoutingDataSource in test files with better path pattern
echo "Searching for RoutingDataSource references in test files..."
rg -l "RoutingDataSource" "src/test"
# Search for test configuration files with corrected fd syntax
echo "Searching for test configuration files..."
fd -e yml -e yaml -e properties . "src/test"
# Check if the found files containing RoutingDataSource are test files
echo "Checking content of files with RoutingDataSource..."
rg -C 3 "RoutingDataSource" "src/test"
Length of output: 645
Script:
#!/bin/bash
# Search for any remaining references to RoutingDataSource in test files with correct path
echo "Searching for RoutingDataSource references in test files..."
rg -l "RoutingDataSource" jpa/boot-read-replica-postgresql/src/test
# Search for test configuration files in the specific module
echo "Searching for test configuration files..."
fd -e yml -e yaml -e properties . jpa/boot-read-replica-postgresql/src/test
# Check content of any files containing RoutingDataSource
echo "Checking content of files with RoutingDataSource..."
rg -C 3 "RoutingDataSource" jpa/boot-read-replica-postgresql/src/test
Length of output: 630
Script:
#!/bin/bash
# Let's check the content of the test properties file to ensure no routing configuration remains
echo "Checking test properties content..."
cat jpa/boot-read-replica-postgresql/src/test/resources/application-test.properties
# Let's also check for any AbstractRoutingDataSource references which is the parent class
echo "Checking for AbstractRoutingDataSource references..."
rg "AbstractRoutingDataSource" jpa/boot-read-replica-postgresql/src/test
# Check for any routing-related configuration in main application properties
echo "Checking main application properties..."
rg "routing|datasource" jpa/boot-read-replica-postgresql/src/test/resources/application-test.properties
Length of output: 758
README.md (1)
26-26: LGTM! Documentation accurately reflects the architectural changes.
The updated table entry correctly describes the shift to using LazyConnectionDataSourceProxy for connection optimization in the Read Replica Postgres implementation. This change aligns well with the architectural improvements made in the codebase.
| private void setupJdbcTemplates(DataSource dataSource) { | ||
| assertThat(dataSource) | ||
| .isNotNull() | ||
| .withFailMessage("DataSource must not be null") | ||
| .isInstanceOf(LazyConnectionDataSourceProxy.class); | ||
|
|
||
| LazyConnectionDataSourceProxy lazyProxy = (LazyConnectionDataSourceProxy) dataSource; | ||
|
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||
| // Setup primary template | ||
| DataSource targetDataSource = lazyProxy.getTargetDataSource(); | ||
| assertThat(targetDataSource) | ||
| .isNotNull() | ||
| .withFailMessage("Target DataSource must not be null") | ||
| .isInstanceOf(ProxyDataSource.class); | ||
|
|
||
| primaryJdbcTemplate = | ||
| new JdbcTemplate(resolvedDataSources.get(RoutingDataSource.Route.PRIMARY)); | ||
| new JdbcTemplate(((ProxyDataSource) targetDataSource).getDataSource()); | ||
|
|
||
| // Setup replica template | ||
| Object readOnlyDataSource = ReflectionTestUtils.getField(lazyProxy, "readOnlyDataSource"); | ||
| assertThat(readOnlyDataSource) | ||
| .isNotNull() | ||
| .withFailMessage("Read-only DataSource must not be null") | ||
| .isInstanceOf(ProxyDataSource.class); | ||
|
|
||
| replicaJdbcTemplate = | ||
| new JdbcTemplate(resolvedDataSources.get(RoutingDataSource.Route.REPLICA)); | ||
| new JdbcTemplate(((ProxyDataSource) readOnlyDataSource).getDataSource()); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Consider reducing reflection usage and improving method organization.
While the setup is thorough in validating the data source hierarchy, consider these improvements:
-
The method has multiple responsibilities (validation and setup). Consider splitting into separate methods:
- validateDataSourceHierarchy(DataSource)
- setupPrimaryTemplate(DataSource)
- setupReplicaTemplate(LazyConnectionDataSourceProxy)
-
Reflection usage makes the tests coupled to implementation details. Consider exposing the read-only data source through a test-specific method in LazyConnectionDataSourceProxy.
Here's a suggested refactoring:
private void setupJdbcTemplates(DataSource dataSource) {
validateDataSourceHierarchy(dataSource);
LazyConnectionDataSourceProxy lazyProxy = (LazyConnectionDataSourceProxy) dataSource;
setupPrimaryTemplate(lazyProxy.getTargetDataSource());
setupReplicaTemplate(lazyProxy);
}
private void validateDataSourceHierarchy(DataSource dataSource) {
assertThat(dataSource)
.isNotNull()
.withFailMessage("DataSource must not be null")
.isInstanceOf(LazyConnectionDataSourceProxy.class);
}
private void setupPrimaryTemplate(DataSource targetDataSource) {
assertThat(targetDataSource)
.isNotNull()
.withFailMessage("Target DataSource must not be null")
.isInstanceOf(ProxyDataSource.class);
primaryJdbcTemplate = new JdbcTemplate(((ProxyDataSource) targetDataSource).getDataSource());
}
private void setupReplicaTemplate(LazyConnectionDataSourceProxy lazyProxy) {
Object readOnlyDataSource = ReflectionTestUtils.getField(lazyProxy, "readOnlyDataSource");
assertThat(readOnlyDataSource)
.isNotNull()
.withFailMessage("Read-only DataSource must not be null")
.isInstanceOf(ProxyDataSource.class);
replicaJdbcTemplate = new JdbcTemplate(((ProxyDataSource) readOnlyDataSource).getDataSource());
}
Summary by CodeRabbit
Release Notes
New Features
pgadmin4service for database management.LazyConnectionDataSourceProxy.Bug Fixes
Refactor
Tests