NPM Sonar Scanner fails to run on Jenkins CI (UNIX)

[prasadpamidi]

Hi,

We are seeing intermittent failures while running sonar scan on our Jenkins (UNIX) machines.

Before kicking off the scan, we run these custom commands

ls -la /home/jenkins | grep sonar
mkdir -p /home/jenkins/.sonar	
ln -fs /opt/sonar /home/jenkins/.sonar/native-sonar-scanner || echo "link already exists, skipping link creation"
ls -la /home/jenkins/.sonar

And we kickoff the scan via npm action defined in the package.json.

npm run sonar-scan

While running the above command, the sonar scanner is failing occasionally with the following error.

[19:53:10] Starting analysis...
[19:53:10] Checking if executable exists: /home/jenkins/.sonar/native-sonar-scanner/sonar-scanner-4.5.0.2216-linux/bin/sonar-scanner
[19:53:10] Could not find executable in "/home/jenkins/.sonar/native-sonar-scanner".
[19:53:10] Proceed with download of the platform binaries for SonarScanner...
[19:53:10] Creating /home/jenkins/.sonar/native-sonar-scanner
/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/node_modules/mkdirp/lib/mkdirp-manual.js:59
      throw er
      ^

Error: EEXIST: file already exists, mkdir '/home/jenkins/.sonar/native-sonar-scanner'
    at Object.mkdirSync (fs.js:987:3)
    at mkdirpManualSync (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/node_modules/mkdirp/lib/mkdirp-manual.js:48:10)
    at mkdirpNativeSync (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/node_modules/mkdirp/lib/mkdirp-native.js:33:14)
    at mkdirpSync (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/node_modules/mkdirp/index.js:21:7)
    at getSonarScannerExecutable (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/dist/sonar-scanner-executable.js:98:3)
    at scanCLI (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/dist/index.js:31:3)
    at Object.<anonymous> (/home/jenkins/workspace/**********/**********/node_modules/sonarqube-scanner/dist/bin/sonar-scanner:9:1)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32) {
  errno: -17,
  syscall: 'mkdir',
  code: 'EEXIST',
  path: '/home/jenkins/.sonar/native-sonar-scanner'
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the **********@ sonar-scan script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Is there something wrong with what we are doing? Is there a way to fix this?