gistfile1.txt

      import hudson.model.*
        import hudson.slaves.*
        import jenkins.model.*
        import jenkins.slaves.*

        slave = Jenkins.instance.getNode('adapt-lin-s1') as Slave

        if(slave == null) {
          return null
        }

        current_slave = [
          name:slave.name,
          description:slave.nodeDescription,
          remote_fs:slave.remoteFS,
          executors:slave.numExecutors.toInteger(),
          usage_mode:slave.mode.toString().toLowerCase(),
          labels:slave.labelString.split().sort(),
          environment:new java.util.HashMap<String,String>(slave.nodeProperties.get(EnvironmentVariablesNodeProperty.class)?.envVars),
          connected:(slave.computer.connectTime > 0),
          online:slave.computer.online
        ]

        // Determine retention strategy
        if (slave.retentionStrategy instanceof RetentionStrategy.Always) {
          current_slave['availability'] = 'always'
        } else if (slave.retentionStrategy instanceof RetentionStrategy.Demand) {
          current_slave['availability'] = 'demand'
          retention = slave.retentionStrategy as RetentionStrategy.Demand
          current_slave['in_demand_delay'] = retention.inDemandDelay
          current_slave['idle_delay'] = retention.idleDelay
        } else {
          current_slave['availability'] = null
        }
        
         builder = new groovy.json.JsonBuilder(current_slave)
         println(builder)