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chore: Add powertools specific user-agent-suffix to the AWS SDK v2 clients #1306
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jeromevdl
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aws-powertools:main
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eldimi:chore/user_agent_sdk_clients
Aug 2, 2023
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7f74a9f
chore: add powertools user-agent-suffix to the AWS SDK v2 clients
eldimi 44f6b9b
Merge branch 'main' into chore/user_agent_sdk_clients
eldimi b1809cc
fix wrong import for logger
eldimi 3bf973c
fix review comments: Add comments and javadoc for readability, rename…
eldimi 0c1f723
Merge branch 'main' into chore/user_agent_sdk_clients
eldimi 825b41c
fix typo
eldimi 51313a3
Merge branch 'main' into chore/user_agent_sdk_clients
eldimi ecaa919
fix code smells and formatting issues
eldimi 5c9f462
Merge branch 'main' into chore/user_agent_sdk_clients
eldimi 7371857
Merge branch 'main' into chore/user_agent_sdk_clients
jeromevdl 8f0e137
Merge branch 'main' into chore/user_agent_sdk_clients
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90 changes: 90 additions & 0 deletions
90
...re/src/main/java/software/amazon/lambda/powertools/core/internal/UserAgentConfigurer.java
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| @@ -0,0 +1,90 @@ | ||
| package software.amazon.lambda.powertools.core.internal; | ||
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| import com.sun.org.slf4j.internal.Logger; | ||
| import com.sun.org.slf4j.internal.LoggerFactory; | ||
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| import java.io.FileInputStream; | ||
| import java.io.IOException; | ||
| import java.net.URL; | ||
| import java.util.Properties; | ||
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| import static software.amazon.lambda.powertools.core.internal.SystemWrapper.getenv; | ||
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| public class UserAgentConfigurer { | ||
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| public static final String NA = "NA"; | ||
| public static final String VERSION_KEY = "powertools.version"; | ||
| public static final String PT_FEATURE_VARIABLE = "${PT_FEATURE}"; | ||
| public static final String PT_EXEC_ENV_VARIABLE = "${PT_EXEC_ENV}"; | ||
| public static final String VERSION_PROPERTIES_FILENAME = "version.properties"; | ||
| public static final String AWS_EXECUTION_ENV = "AWS_EXECUTION_ENV"; | ||
| private static final Logger LOG = LoggerFactory.getLogger(UserAgentConfigurer.class); | ||
| private static final String NO_OP = "no-op"; | ||
| private static String PT_VERSION = getProjectVersion(); | ||
| private static String USER_AGENT_PATTERN = "PT/" + PT_FEATURE_VARIABLE + "/" + PT_VERSION + " PTEnv/" + PT_EXEC_ENV_VARIABLE; | ||
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| /** | ||
| * Retrieves the project version from the version.properties file | ||
| * | ||
| * @return the project version | ||
| */ | ||
| static String getProjectVersion() { | ||
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| return getVersionFromProperties(VERSION_PROPERTIES_FILENAME, VERSION_KEY); | ||
| } | ||
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| /** | ||
| * Retrieves the project version from a properties file. | ||
| * The file should be in the resources folder. | ||
| * The version is retrieved from the property with the given key. | ||
| * | ||
| * @param propertyFileName the name of the properties file | ||
| * @param versionKey the key of the property that contains the version | ||
| * @return the version of the project as configured in the given properties file | ||
| */ | ||
| static String getVersionFromProperties(String propertyFileName, String versionKey) { | ||
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| URL propertiesFileURI = Thread.currentThread().getContextClassLoader().getResource(propertyFileName); | ||
| if (propertiesFileURI != null) { | ||
| try (FileInputStream fis = new FileInputStream(propertiesFileURI.getPath())) { | ||
| Properties properties = new Properties(); | ||
| properties.load(fis); | ||
| String version = properties.getProperty(versionKey); | ||
| if (version != null && !version.isEmpty()) { | ||
| return version; | ||
| } | ||
| } catch (IOException e) { | ||
| LOG.warn("Unable to read {} file. Using default version.", propertyFileName); | ||
| LOG.debug("Exception:", e); | ||
| } | ||
| } | ||
| return NA; | ||
| } | ||
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| /** | ||
| * Retrieves the user agent string for the Powertools for AWS Lambda. | ||
| * It follows the pattern PT/{PT_FEATURE}/{PT_VERSION} PTEnv/{PT_EXEC_ENV} | ||
| * The version of the project is automatically retrieved. | ||
| * The PT_EXEC_ENV is automatically retrieved from the AWS_EXECUTION_ENV environment variable. | ||
| * If it AWS_EXECUTION_ENV is not set, PT_EXEC_ENV defaults to "NA" | ||
| * | ||
| * @param ptFeature a custom feature to be added to the user agent string (e.g. idempotency). | ||
| * If null or empty, the default PT_FEATURE is used. | ||
| * The default PT_FEATURE is "no-op". | ||
| * @return the user agent string | ||
| */ | ||
| public static String getUserAgent(String ptFeature) { | ||
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| String awsExecutionEnv = getenv(AWS_EXECUTION_ENV); | ||
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| String ptExecEnv = awsExecutionEnv != null ? awsExecutionEnv : NA; | ||
| String userAgent = USER_AGENT_PATTERN.replace(PT_EXEC_ENV_VARIABLE, ptExecEnv); | ||
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| if (ptFeature == null || ptFeature.isEmpty()) { | ||
| ptFeature = NO_OP; | ||
| } | ||
| return userAgent | ||
| .replace(PT_FEATURE_VARIABLE, ptFeature) | ||
| .replace(PT_EXEC_ENV_VARIABLE, ptExecEnv); | ||
| } | ||
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| } | ||
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| @@ -0,0 +1 @@ | ||
| powertools.version=${project.version} | ||
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102 changes: 102 additions & 0 deletions
102
...rc/test/java/software/amazon/lambda/powertools/core/internal/UserAgentConfigurerTest.java
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| @@ -0,0 +1,102 @@ | ||
| package software.amazon.lambda.powertools.core.internal; | ||
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| import org.junit.jupiter.api.Test; | ||
| import org.mockito.MockedStatic; | ||
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| import java.io.File; | ||
| import java.util.regex.Pattern; | ||
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| import static org.assertj.core.api.Assertions.assertThat; | ||
| import static org.mockito.Mockito.mockStatic; | ||
| import static software.amazon.lambda.powertools.core.internal.SystemWrapper.getenv; | ||
| import static software.amazon.lambda.powertools.core.internal.UserAgentConfigurer.VERSION_KEY; | ||
| import static software.amazon.lambda.powertools.core.internal.UserAgentConfigurer.getVersionFromProperties; | ||
| import static software.amazon.lambda.powertools.core.internal.UserAgentConfigurer.VERSION_PROPERTIES_FILENAME; | ||
| import static software.amazon.lambda.powertools.core.internal.UserAgentConfigurer.AWS_EXECUTION_ENV; | ||
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| public class UserAgentConfigurerTest { | ||
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| private static final String SEM_VER_PATTERN = "^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?$"; | ||
| private static final String VERSION = UserAgentConfigurer.getProjectVersion(); | ||
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| @Test | ||
| public void testGetVersion() { | ||
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| assertThat(VERSION).isNotNull(); | ||
| assertThat(VERSION).isNotEmpty(); | ||
| assertThat(Pattern.matches(SEM_VER_PATTERN, VERSION)).isTrue(); | ||
| } | ||
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| @Test | ||
| public void testGetVersionFromProperties_WrongKey() { | ||
| String version = getVersionFromProperties(VERSION_PROPERTIES_FILENAME, "some invalid key"); | ||
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| assertThat(version).isNotNull(); | ||
| assertThat(version).isEqualTo("NA"); | ||
| } | ||
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| @Test | ||
| public void testGetVersionFromProperties_FileNotExist() { | ||
| String version = getVersionFromProperties("some file", VERSION_KEY); | ||
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| assertThat(version).isNotNull(); | ||
| assertThat(version).isEqualTo("NA"); | ||
| } | ||
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| @Test | ||
| public void testGetVersionFromProperties_InvalidFile() { | ||
| File f = new File(Thread.currentThread().getContextClassLoader().getResource("unreadable.properties").getPath()); | ||
| f.setReadable(false); | ||
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| String version = getVersionFromProperties("unreadable.properties", VERSION_KEY); | ||
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| assertThat(version).isEqualTo("NA"); | ||
| } | ||
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| @Test | ||
| public void testGetVersionFromProperties_EmptyVersion() { | ||
| String version = getVersionFromProperties("test.properties", VERSION_KEY); | ||
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| assertThat(version).isEqualTo("NA"); | ||
| } | ||
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| @Test | ||
| public void testGetUserAgent() { | ||
| String userAgent = UserAgentConfigurer.getUserAgent("test-feature"); | ||
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| assertThat(userAgent).isNotNull(); | ||
| assertThat(userAgent).isEqualTo("PT/test-feature/" + VERSION + " PTEnv/NA"); | ||
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| } | ||
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| @Test | ||
| public void testGetUserAgent_NoFeature() { | ||
| String userAgent = UserAgentConfigurer.getUserAgent(""); | ||
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| assertThat(userAgent).isNotNull(); | ||
| assertThat(userAgent).isEqualTo("PT/no-op/" + VERSION + " PTEnv/NA"); | ||
| } | ||
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| @Test | ||
| public void testGetUserAgent_NullFeature() { | ||
| String userAgent = UserAgentConfigurer.getUserAgent(null); | ||
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| assertThat(userAgent).isNotNull(); | ||
| assertThat(userAgent).isEqualTo("PT/no-op/" + VERSION + " PTEnv/NA"); | ||
| } | ||
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| @Test | ||
| public void testGetUserAgent_SetAWSExecutionEnv() { | ||
| try (MockedStatic<SystemWrapper> mockedSystemWrapper = mockStatic(SystemWrapper.class)) { | ||
| mockedSystemWrapper.when(() -> getenv(AWS_EXECUTION_ENV)).thenReturn("AWS_Lambda_java8"); | ||
| String userAgent = UserAgentConfigurer.getUserAgent("test-feature"); | ||
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| assertThat(userAgent).isNotNull(); | ||
| assertThat(userAgent).isEqualTo("PT/test-feature/" + VERSION + " PTEnv/AWS_Lambda_java8"); | ||
| } | ||
| } | ||
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| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| powertools.version= |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| powertools.version=${project.version} | ||
|
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