Fix issue with empty xml resulting in parse errors.

Improve version information.

bitbucket-pipelines.yml

@@ -17,7 +17,7 @@ pipelines:
             - gradle
           name: Build and Release
           script:
-            - ./gradlew clean build shadowJar startShadowScripts buildRpm buildDeb
+            - ./gradlew clean versionTxt build shadowJar startShadowScripts buildRpm buildDeb
             - shopt -s nullglob ; for file in ${BITBUCKET_CLONE_DIR}/build/libs/*-all.jar ; do curl -X POST --user "${BB_AUTH_STRING}" "https://api.bitbucket.org/2.0/repositories/${BITBUCKET_REPO_OWNER}/${BITBUCKET_REPO_SLUG}/downloads" --form files=@"${file}" ; done
             - shopt -s nullglob ; for file in ${BITBUCKET_CLONE_DIR}/build/distributions/*.rpm ; do curl -X POST --user "${BB_AUTH_STRING}" "https://api.bitbucket.org/2.0/repositories/${BITBUCKET_REPO_OWNER}/${BITBUCKET_REPO_SLUG}/downloads" --form files=@"${file}" ; done
             - shopt -s nullglob ; for file in ${BITBUCKET_CLONE_DIR}/build/distributions/*.deb ; do curl -X POST --user "${BB_AUTH_STRING}" "https://api.bitbucket.org/2.0/repositories/${BITBUCKET_REPO_OWNER}/${BITBUCKET_REPO_SLUG}/downloads" --form files=@"${file}" ; done

build.gradle

@@ -9,6 +9,7 @@ plugins {
     id 'jacoco'
 
     id "com.github.johnrengelman.shadow" version "6.0.0"
+    id "net.nemerosa.versioning" version "2.14.0"
     id "nebula.ospackage" version "8.4.1"
 }
 
@@ -97,3 +98,23 @@ jacocoTestCoverageVerification {
     }
 }
 check.dependsOn jacocoTestCoverageVerification
+
+
+processResources.dependsOn.add("versionFile")
+versionFile {
+    // Path to the file to be written
+    file = new File(project.buildDir, 'resources/main/version.properties')
+}
+
+jar {
+    manifest {
+        attributes(
+            'Built-By'       : System.properties['user.name'],
+            'Build-Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ss.SSSZ").toString(),
+            'Build-Revision' : versioning.info.commit,
+            'Created-By'     : "Gradle ${gradle.gradleVersion}",
+            'Build-Jdk'      : "${System.properties['java.version']} (${System.properties['java.vendor']} ${System.properties['java.vm.version']})",
+            'Build-OS'       : "${System.properties['os.name']} ${System.properties['os.arch']} ${System.properties['os.version']}"
+        )
+    }
+}

gradle.properties

@@ -1,2 +1,3 @@
+id            = hmci
 group         = biz.nellemann.hmci
 version       = 1.0.8

src/main/groovy/biz/nellemann/hmci/App.groovy

@@ -160,20 +160,33 @@ class App implements Runnable {
     }
 
 
+    static String getVersion() {
+        URL url = getClass().getResource("/version.properties");
+        if (url == null) {
+            return "No version.txt file found in the classpath."
+        }
+        Properties properties = new Properties();
+        properties.load(url.openStream());
+        return properties.getProperty("VERSION_GRADLE") + "-" + properties.getProperty("VERSION_BUILD")
+    }
+
+
     static void main(String... args) {
 
         def cli = new CliBuilder(name: "hmci")
-        cli.h(longOpt: 'help', 'display usage')
-        cli.v(longOpt: 'version', 'display version')
-        cli.c(longOpt: 'config', args: 1, required: true, defaultValue: '/etc/hmci.groovy', 'configuration file')
+        cli.h(longOpt: 'help', usageHelp: true, 'display usage information')
+        cli.v(longOpt: 'version', versionHelp: true, 'display version information')
+        cli.c(longOpt: 'config', args: 1, required: true, paramLabel: "FILE", defaultValue: '/etc/hmci.groovy', 'configuration file')
 
         OptionAccessor options = cli.parse(args)
-        if (options.h) cli.usage()
+        if (options.h) {
+            cli.usage()
+            return
+        }
 
         if(options.v) {
-            // TODO - how to display correct version or build number ?
-            println("See https://bitbucket.org/mnellemann/hmci for more information.")
-            System.exit(0)
+            println("Version " + getVersion())
+            return
         }
 
         ConfigObject configuration
@@ -194,7 +207,6 @@ class App implements Runnable {
         }
 
         new App(configuration)
-        System.exit(0);
     }
 
 

src/main/groovy/biz/nellemann/hmci/HmcClient.groovy

@@ -44,6 +44,7 @@ class HmcClient {
     private final String password
     private final Boolean unsafe
 
+    protected Integer responseErrors = 0
     protected String authToken
     private final OkHttpClient client
 
@@ -151,6 +152,7 @@ class HmcClient {
 
         // Do not try to parse empty response
         if(responseBody.empty || responseBody.size() < 1) {
+            responseErrors++
             return managedSystemsMap
         }
 
@@ -191,6 +193,7 @@ class HmcClient {
 
         // Do not try to parse empty response
         if(responseBody.empty || responseBody.size() < 1) {
+            responseErrors++
             return partitionMap
         }
 
@@ -227,9 +230,14 @@ class HmcClient {
         URL url = new URL(String.format("%s/rest/api/pcm/ManagedSystem/%s/ProcessedMetrics?NoOfSamples=1", baseUrl, system.id))
         Response response = getResponse(url)
         String responseBody = response.body.string()
-
         String jsonBody
 
+        // Do not try to parse empty response
+        if(responseBody.empty || responseBody.size() < 1) {
+            responseErrors++
+            return jsonBody
+        }
+
         // Parse XML and fetch JSON link
         def feed = new XmlSlurper().parseText(responseBody)
         feed?.entry?.each { entry ->
@@ -255,10 +263,14 @@ class HmcClient {
         URL url = new URL(String.format("%s/rest/api/pcm/ManagedSystem/%s/LogicalPartition/%s/ProcessedMetrics?NoOfSamples=1", baseUrl, partition.system.id, partition.id))
         Response response = getResponse(url)
         String responseBody = response.body.string()
-
-        //log.debug(responseBody)
         String jsonBody
 
+        // Do not try to parse empty response
+        if(responseBody.empty || responseBody.size() < 1) {
+            responseErrors++
+            return jsonBody
+        }
+
         // Parse XML and fetch JSON link
         def feed = new XmlSlurper().parseText(responseBody)
         feed?.entry?.each { entry ->
@@ -295,6 +307,12 @@ class HmcClient {
      */
     private Response getResponse(URL url, Integer retry = 0) {
 
+        if(responseErrors > 2) {
+            responseErrors = 0
+            login(true)
+            return getResponse(url, retry++)
+        }
+
         Request request = new Request.Builder()
                 .url(url)
                 .addHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8")

src/main/resources/.gitignore

@@ -0,0 +1 @@
+version.properties