Introduction

I want to spy maven for all File creation/modification/deletion under its local repository dir.

Moreover, I want to have the stack trace (the source code) that performs such calls.

Let's launch maven instrumented under several conditions:

  • mvn install
  • mvn ... downloading from remote repositories some pom.xml and jar files
  • mvn ... downloading from an invalid Http Proxy some pom.xml and jar files, all files are corrupted html files (using default checkSumPolicy=warn)
  • mvn ... downloading from an invalid Http Proxy some pom.xml and jar files, but forcing checkSumPolicy=fail

Using (see previous post) Glowroot Plugin on Maven itself

In the previous post, I have described a Glowroot plugin to instrument calls done on java.io.*

Now for instrumenting maven itself, let's use it. Notice maven use some custom classloaders, and for it Bootstrap ClassLoader, it scans all jars in "${MAVEN_HOME}/boot/plexus-classworlds-*.jar"

Therefore, it is simpler to use the jvm argument "-Xbootclasspath/a:" to append a jar in the bootclasspath:

I use this script to launch an instrumented maven jvm: 

./mvn-glowroot-file.sh install
cf detailed script: 
#!/bin/bash

# file: mvn-glowroot-file.sh

# script similar to "mvn", that add glowroot file write plugin instrumentation


PROJECT_VERSION=$(mvn -q -DforceStdout help:evaluate -Dexpression=project.version)
PLUGIN_JAR="./target/test-glowroot-${PROJECT_VERSION}.jar"

MAVEN_OPTS="${MAVEN_OPTS} -javaagent:./glowroot/glowroot.jar"
MAVEN_OPTS="${MAVEN_OPTS} -Xbootclasspath/a:${PLUGIN_JAR}"

# MAVEN_OPTS="${MAVEN_OPTS} -Dglowroot.debug.printClassLoading=true"


export MAVEN_OPTS

mvn $@

Result File write acces for "mvn install"

Write access performed by maven are printed to stdout lines starting by '#### (glowroot-file) ', with the corresponding stack trace.

In this default plugin configuration, only pathes that start with '/home/' are printed, this can be changed by glooroot arguments and configuration files (-Dglowroot.conf.dir, config.json, config-default.json, ...)

Notice that default values from the META-INF/glowroot.plugin.json get cached in the glowroot/config.json !

Results logs: 

2019-05-11 19:58:44.813 INFO  org.glowroot - Glowroot version: 0.13.4, built 2019-04-21 20:27:33 +0000
2019-05-11 19:58:44.815 INFO  org.glowroot - Java version: 1.8.0_131 (Oracle Corporation / Linux)
2019-05-11 19:58:44.816 INFO  org.glowroot - Java args: -javaagent:./glowroot/glowroot.jar -Xbootclasspath/a:./target/test-glowroot-0.0.1-SNAPSHOT.jar
#### (glowroot-file)  cinit class fr.an.test.glowroot.FileAspect
#### (glowroot-file)  logging only java.io.File modifications under path:'/home/' with pattern:.*
#### (glowroot-file) (1/1) FileOutputStream.open() '/home/arnaud/.oracle_jre_usage/db4f55ab9af3a5a2.timestamp'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileOutputStreamOpenAdvice.onBefore:56/FileOutputStream.open/<init>:213/<init>:162/UsageTrackerClient.registerUsage:434/setupAndTimestamp:300/access$000:78/UsageTrackerClient$4.run:322/run:317/AccessController.doPrivileged/UsageTrackerClient.run:317/PostVMInitHook.trackJavaUsage:29/run:21
2019-05-11 19:58:48.152 ERROR org.glowroot - Error binding to 127.0.0.1:4000, the UI is not available (will keep trying to bind...): Address already in use
#### (glowroot-file) File.mkdirs() '/home/arnaud/.m2/repository'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileMkdirsAdvice.onBefore:107/File.mkdirs/DefaultMaven.validateLocalRepository:360/doExecute:169/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------------< fr.an.tests:test-glowroot >----------------------
[INFO] Building test-glowroot 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
2019-05-11 19:58:49.155 ERROR org.glowroot - Error binding to 127.0.0.1:4000, the UI is not available (will keep trying to bind...): Address already in use
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ test-glowroot ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ test-glowroot ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ test-glowroot ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ test-glowroot ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ test-glowroot ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ test-glowroot ---
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ test-glowroot ---
[INFO] Installing /mnt/a_1tera2/homeData/arnaud/perso/devPerso/my-github/test-snippets.github/test-glowroot/target/test-glowroot-0.0.1-SNAPSHOT.jar to /home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT/test-glowroot-0.0.1-SNAPSHOT.jar
#### (glowroot-file) File.mkdirs() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileMkdirsAdvice.onBefore:107/File.mkdirs/TrackingFileManager.update:95/EnhancedLocalRepositoryManager.addRepo:193/addArtifact:171/add:149/DefaultInstaller.install:275/install:195/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
[INFO] Installing /mnt/a_1tera2/homeData/arnaud/perso/devPerso/my-github/test-snippets.github/test-glowroot/pom.xml to /home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT/test-glowroot-0.0.1-SNAPSHOT.pom
#### (glowroot-file) (2/5) FileOutputStream.open() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT/test-glowroot-0.0.1-SNAPSHOT.pom'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileOutputStreamOpenAdvice.onBefore:56/FileOutputStream.open/<init>:213/<init>:162/DefaultFileProcessor.copy:166/copy:150/DefaultInstaller.install:267/install:195/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
#### (glowroot-file) File.mkdirs() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileMkdirsAdvice.onBefore:107/File.mkdirs/TrackingFileManager.update:95/EnhancedLocalRepositoryManager.addRepo:193/addArtifact:171/add:149/DefaultInstaller.install:275/install:195/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
#### (glowroot-file) File.mkdirs() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileMkdirsAdvice.onBefore:107/File.mkdirs/MavenMetadata.write:115/merge:78/DefaultInstaller.install:302/install:205/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
#### (glowroot-file) (3/6) FileOutputStream.open() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/0.0.1-SNAPSHOT/maven-metadata-local.xml'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileOutputStreamOpenAdvice.onBefore:56/FileOutputStream.open/<init>:213/<init>:162/XmlStreamWriter.<init>:60/WriterFactory.newXmlWriter:122/MavenMetadata.write:116/merge:78/DefaultInstaller.install:302/install:205/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
#### (glowroot-file) File.mkdirs() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileMkdirsAdvice.onBefore:107/File.mkdirs/MavenMetadata.write:115/merge:78/DefaultInstaller.install:302/install:205/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
#### (glowroot-file) (4/7) FileOutputStream.open() '/home/arnaud/.m2/repository/fr/an/tests/test-glowroot/maven-metadata-local.xml'
#### (glowroot-file) from stack: FileAspect.logCall:155/FileAspect$FileOutputStreamOpenAdvice.onBefore:56/FileOutputStream.open/<init>:213/<init>:162/XmlStreamWriter.<init>:60/WriterFactory.newXmlWriter:122/MavenMetadata.write:116/merge:78/DefaultInstaller.install:302/install:205/install:152/DefaultRepositorySystem.install:377/DefaultArtifactInstaller.install:107/InstallMojo.execute:115/DefaultBuildPluginManager.executeMojo:137/MojoExecutor.execute:208/execute:154/execute:146/LifecycleModuleBuilder.buildProject:117/buildProject:81/SingleThreadedBuilder.build:56/LifecycleStarter.execute:128/DefaultMaven.doExecute:305/doExecute:192/execute:105/MavenCli.execute:954/doMain:288/main:192/NativeMethodAccessorImpl.invoke0/invoke:62/DelegatingMethodAccessorImpl.invoke:43/Method.invoke:498/Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.859 s
[INFO] Finished at: 2019-05-11T19:58:49+02:00
[INFO] ------------------------------------------------------------------------
The print format for a stack trace element is
   "className.methodName:lineNumber/"
or simply
   "methodName:lineNumber/" to avoid repeating the same className as the one before.

Moreover, only the short classname are printed... it is pretty easy to find out the fully qualified name for the short name.

The equivalent stack trace vertically is .. 

FileAspect$FileOutputStreamOpenAdvice.onBefore:46
FileOutputStream.open/<init>:213/<init>:162
XmlStreamWriter.<init>:60
WriterFactory.newXmlWriter:122
MavenMetadata.write:116/merge:78
DefaultInstaller.install:302/install:205/install:152
DefaultRepositorySystem.install:377
DefaultArtifactInstaller.install:107
InstallMojo.execute:115
DefaultBuildPluginManager.executeMojo:137
MojoExecutor.execute:208/execute:154/execute:146
LifecycleModuleBuilder.buildProject:117/buildProject:81
SingleThreadedBuilder.build:56
LifecycleStarter.execute:128
DefaultMaven.doExecute:305/doExecute:192/execute:105
MavenCli.execute:954
MavenCli.doMain:288
MavenCli.main:192
NativeMethodAccessorImpl.invoke0
NativeMethodAccessorImpl.invoke:62
DelegatingMethodAccessorImpl.invoke:43
Method.invoke:498
Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356

Test again .. log stacktrace for files downloaded and written to local repo

Here is another test execution, to detect the files downloaded by maven and written to local repository 
rm -rf ~/.m2/repository/org/glowroot/glowroot-agent-plugin-api/
./mvn-glowroot-file.sh package
Results: written files:
  • .pom.part
  • .pom.sha1-$(uuid).tmp
  • .pom   (.pom.part renamedTo)
  • .pom.sha1   (.pom.sha1..tmp renamedTo)
  • .jar.part
  • .jar.sha1-$(uuid).tmp
  • .jar   (.jar.part renamedTo)
  • .jar.sha1   (.pom.sha1 renamedTo)
All following stack traces have in common this stack fragment, ommited next 
    MojoExecutor.execute:202/execute:156/execute:148
    LifecycleModuleBuilder.buildProject:117/buildProject:81
    SingleThreadedBuilder.build:56
    LifecycleStarter.execute:128
    DefaultMaven.doExecute:305/doExecute:192/execute:105
    MavenCli.execute:956/doMain:288/main:192
    NativeMethodAccessorImpl.invoke0:62
    DelegatingMethodAccessorImpl.invoke:43
    Method.invoke:498
    Launcher.launchEnhanced:289/launch:229/mainWithExitCode:415/main:356
..

Downloading from central: https://repo.maven.apache.org/maven2/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom
#### (glowroot-file) FileOutputStream.open() '..\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.part 
#### (glowroot-file) from stack:
    FileOutputStream.open/<init>:213/<init>:162
    LazyFileOutputStream.initialize:154
    LazyFileOutputStream.write:126
    AbstractWagon.transfer:581/getTransfer:372/getTransfer:315/getTransfer:284
    StreamWagon.getIfNewer:97/get:61
    WagonTransporter$GetTaskRunner.run:567
    WagonTransporter.execute:435/get:412
    BasicRepositoryConnector$GetTaskRunner.runTask:456
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.resolveCachedArtifactDescriptor:530/getArtifactDescriptorResult:513/
        processDependency:402/processDependency:356/process:344/collectDependencies:247
    DefaultRepositorySystem.collectDependencies:269
    DefaultProjectDependenciesResolver.resolve:169
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248
        
#### (glowroot-file) FileOutputStream.open() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.sha1-77ce64e42112642211906003866.tmp 
#### (glowroot-file) from stack:
    FileOutputStream.open:213/<init>:162
    LazyFileOutputStream.initialize:154/write:126
    AbstractWagon.transfer:581/getTransfer:372/getTransfer:315/getTransfer:284
    StreamWagon.getIfNewer:97/get:61
    WagonTransporter$GetTaskRunner.run:567
    WagonTransporter.execute:435/get:412
    BasicRepositoryConnector$GetTaskRunner.fetchChecksum:423
    ChecksumValidator.validateExternalChecksums:157/validate:103
    BasicRepositoryConnector$GetTaskRunner.runTask:459
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.resolveCachedArtifactDescriptor:530/getArtifactDescriptorResult:513/
        processDependency:402/processDependency:356/process:344/collectDependencies:247
    DefaultRepositorySystem.collectDependencies:269
    DefaultProjectDependenciesResolver.resolve:169
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248

#### (glowroot-file) (1/1) File.renameTo() dest: '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom' src:  '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.part' 
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    BasicRepositoryConnector$GetTaskRunner.runTask:481
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.resolveCachedArtifactDescriptor:530/getArtifactDescriptorResult:513
        /processDependency:402/processDependency:356/process:344
    DefaultDependencyCollector.collectDependencies:247
    DefaultRepositorySystem.collectDependencies:269
    ProjectDependenciesResolver.resolve:169
    LifecycleDependencyResolver.getDependencies:243
    LifecycleDependencyResolver.resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248

#### (glowroot-file) (2/2) File.renameTo() dest: '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.sha1' 
    src:  '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.sha1-ad24d7b01489881715896332211.tmp'
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    ChecksumValidator.commit:244
    BasicRepositoryConnector$GetTaskRunner.runTask:484
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.resolveCachedArtifactDescriptor:530/getArtifactDescriptorResult:513
        /processDependency:402/processDependency:356/process:344/collectDependencies:247
    DefaultRepositorySystem.collectDependencies:269
    ProjectectDependenciesResolver.resolve:169
    LifecycleDependencyResolver.getDependencies:243
    LifecycleDependencyResolver.resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248

Downloaded from central: https://repo.maven.apache.org/maven2/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom : https://repo.maven.apache.org/maven2/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.jar

#### (glowroot-file) FileOutputStream.open() ~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar.part 
#### (glowroot-file) from stack:
    FileOutputStream.open:213/<init>:162
    LazyFileOutputStream.initialize:154/write:126
    AbstractWagon.transfer:581/getTransfer:372/getTransfer:315/getTransfer:284
    StreamWagon.getIfNewer:97/get:61
    WagonTransporter$GetTaskRunner.run:567
    WagonTransporter.execute:435/get:412
    BasicRepositoryConnector$GetTaskRunner.runTask:456
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215
    DefaultRepositorySystem.resolveDependencies:325
    DefaultProjectDependenciesResolver.resolve:202
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248
    
#### (glowroot-file) FileOutputStream.open() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar.sha1-cebc165f7113521320898028675.tmp' 
#### (glowroot-file) from stack:
    FileOutputStream.open:213/<init>:162
    LazyFileOutputStream.initialize:154/write:126
    AbstractWagon.transfer:581/getTransfer:372/getTransfer:315/getTransfer:284
    StreamWagon.getIfNewer:97/get:61
    WagonTransporter$GetTaskRunner.run:567
    WagonTransporter.execute:435/get:412
    BasicRepositoryConnector$GetTaskRunner.fetchChecksum:423
    ChecksumValidator.validateExternalChecksums:157
    ChecksumValidator.validate:103
    BasicRepositoryConnector$GetTaskRunner.runTask:459
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215
    DefaultRepositorySystem.resolveDependencies:325
    DefaultProjectDependenciesResolver.resolve:202
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248
    
#### (glowroot-file) File.renameTo() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar' 
    src: '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar.part'
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    BasicRepositoryConnector$GetTaskRunner.runTask:481
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215
    DefaultRepositorySystem.resolveDependencies:325
    DefaultProjectDependenciesResolver.resolve:202
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248)

#### (glowroot-file) File.renameTo() dest: '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar.sha1'
    src: '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.jar.sha1-5c65fc31805141540408522583.tmp'
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    ChecksumValidator.commit:244
    BasicRepositoryConnector$GetTaskRunner.runTask:484
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215
    DefaultRepositorySystem.resolveDependencies:325
    DefaultProjectDependenciesResolver.resolve:202
    LifecycleDependencyResolver.getDependencies:243/resolveProjectDependencies:147
    MojoExecutor.ensureDependenciesAreResolved:248

Test again .. downloaded invalid checkSum files, with default checkSumPolicy=warn

I am using here a dummy http repository server, that always answer http 200, with a welcome html page. Therefore, all pom, jar and sh1 files are invalid. For this, I use an additionnal maven profile "-Pdummy-repo" In the ~/.m2/settings.xml: 
    <profile>
        <id>dummy-repo</id>
        <repositories>
            <repository>
                <id>central</id>
                <url>http://localhost:8090/repo</url>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>central</id>
                <url>http://localhost:8090/repo</url>
            </pluginRepository>
        </pluginRepositories>
    </profile>
rm -rf ~/.m2/repository/org/glowroot/glowroot-agent-plugin-api/
./mvn-glowroot-file.sh -Pdummy-repo package
Now, we can see maven is still downloading pom.part, pom.sha1, and then does renameTo the same way !!! By debugging it, this is because by default, repositories have checkSumPolicy="warn", instead of "fail" 
[WARNING] Checksum validation failed, expected <!DOCTYPE but is 28db9960ddfec8ed449bb87ec4d17c139d9301fd from central for http://localhost:8090/repo/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom

[WARNING] Could not validate integrity of download from http://localhost:8090/repo/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom: Checksum validation failed, expected <!DOCTYPE but is 28db9960ddfec8ed449bb87ec4d17c139d9301fd
                   
[WARNING] Checksum validation failed, expected <!DOCTYPE but is 28db9960ddfec8ed449bb87ec4d17c139d9301fd from central for http://localhost:8090/repo/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom

#### (glowroot-file) (1/1) File.renameTo() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom'
    src:'~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.part'
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    BasicRepositoryConnector$GetTaskRunner.runTask:481
    BasicRepositoryConnector$TaskRunner.run:363)
    RunnableErrorForwarder$1.run:75)
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.resolveCachedArtifactDescriptor:530


#### (glowroot-file) (2/2) File.renameTo() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.sha1' 
    src:'~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.sha1-1461f17f5117003776646361438.tmp'
#### (glowroot-file) from stack:
    File.renameTo
    DefaultFileProcessor.move:249
    ChecksumValidator.commit:244
    BasicRepositoryConnector$GetTaskRunner.runTask:484
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489
    DefaultArtifactResolver.resolve:390

Test again .. downloaded invalid checkSum files, with forced checkSumPolicy=fail

For this, I now use maven profile "-Pdummy-repo-fail" In the ~/.m2/settings.xml: 
    <profile>
        <id>dummy-repo-fail</id>
        <repositories>
            <repository>
                <id>central</id>
                <url>http://localhost:8090/repo</url>
                <releases>
                    <checksumPolicy>fail</checksumPolicy>
                </releases>
                <snapshots>
                    <checksumPolicy>fail</checksumPolicy>
                </snapshots>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>central</id>
                <url>http://localhost:8090/repo</url>
                <releases>
                    <checksumPolicy>fail</checksumPolicy>
                </releases>
                <snapshots>
                    <checksumPolicy>fail</checksumPolicy>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
    </profile>
rm -rf ~/.m2/repository/org/glowroot/glowroot-agent-plugin-api/
./mvn-glowroot-file.sh -Pdummy-repo-fail package
Now maven correctly detects a build failure. 
Downloading from central: http://localhost:8090/repo/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom
[WARNING] Checksum validation failed, expected <!DOCTYPE but is 28db9960ddfec8ed449bb87ec4d17c139d9301fd from central for http://localhost:8090/repo/org/glowroot/glowroot-agent-plugin-api/0.13.4/glowroot-agent-plugin-api-0.13.4.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  1.224 s
[INFO] Finished at: 2019-05-11T15:42:35+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project test-glowroot: Could not resolve dependencies for project fr.an.tests:test-glowroot:jar:0.0.1-SNAPSHOT: Failed to collect dependencies at org.glowroot:glowroot-agent-plugin-api:jar:0.13.4: Failed to read artifact descriptor for org.glowroot:glowroot-agent-plugin-api:jar:0.13.4: Could not transfer artifact org.glowroot:glowroot-agent-plugin-api:pom:0.13.4 from/to central (http://localhost:8090/repo): Checksum validation failed, expected <!DOCTYPE but is 28db9960ddfec8ed449bb87ec4d17c139d9301fd -> [Help 1]
And we can check that only ".part" or ".tmp" files are written, and they are deleted correctly. 
#### (glowroot-file) (2/2) File.delete() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.part'
#### (glowroot-file) from stack:
    at java.io.File.delete:342)
    BasicRepositoryConnector$GetTaskRunner.runTask:489
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.collectDependencies:247

#### (glowroot-file) (3/3) File.delete() '~\.m2\repository\org\glowroot\glowroot-agent-plugin-api\0.13.4\glowroot-agent-plugin-api-0.13.4.pom.part.lock'
#### (glowroot-file) from stack:
    File.delete
    PartialFile$LockFile.close:236
    PartialFile.close:349
    BasicRepositoryConnector$GetTaskRunner.runTask:489
    BasicRepositoryConnector$TaskRunner.run:363
    RunnableErrorForwarder$1.run:75
    BasicRepositoryConnector$DirectExecutor.execute:642
    BasicRepositoryConnector.get:262
    DefaultArtifactResolver.performDownloads:489/resolve:390/resolveArtifacts:215/resolveArtifact:192
    DefaultArtifactDescriptorReader.loadPom:240/readArtifactDescriptor:171
    DefaultDependencyCollector.collectDependencies:247

Conclusion

Maven is unfortunatly badly configured by default for checkSumPolicy...
It uses "warn", but it should rather use "fail"
In particular if you are working behind a badly configured http proxy.

Glowroot is very helpfull to understand deep inside a jvm what is going on, without touching the program source code

View the full source-code https://github.com/Arnaud-Nauwynck/test-snippets/tree/master/test-glowroot