Add support for several process directives

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

README.md

@@ -110,13 +110,20 @@ process {
 * `workDir` is where we mount the NFS and where Nextflow put the process files.
 * In the `float` section, users must supply the address of the MMCE operation
   center and the proper credentials.
-  * `address` address of your operation center(s).  Separate multiple addresses with `,`.
-  * `username` and `password` are the credentials for your operation center
-  * `nfs` points to the location of the NFS.
-  * `commonExtra` allows the user to specify other submit parameters.  This parameter
-    will be appended to every float submit command.
-* In the `process` scope, we assign `float` to `executor` to tell Nextflow to run
-  the task with the float executor.
+* In the `process` scope, we specify `executor = 'float'` to tell Nextflow to execute
+  tasks with the Float executor.
+
+Available `float` config options: 
+
+* `address`: address of your operation center(s).  Separate multiple addresses with `,`.
+* `username`, `password`: the credentials for your operation center
+* `nfs`: the location of the NFS (if using NFS for the work directory)
+* `migratePolicy`: the migration policy used by WaveRider, specified as a map.  Refer to
+              the CLI usage for the list of available options.
+* `vmPolicy`: the VM creation policy, specified as a map.  Refer to the CLI usage
+              for the list of available options.
+* `commonExtra`: allows the user to specify other submit CLI options.  This parameter
+                 will be appended to every float submit command.
 
 ### Configure with environment variables
 
@@ -226,14 +233,18 @@ In additional, you may want to:
 * specify your s3 credentials in the `aws` scope.
 
 When fusion is enabled, you can find similar submit command line in your `.nextflow.log`
-```
-float -a 34.71.114.123 -u admin -p *** submit --image \
-wave.seqera.io/wt/dfd4c4e2d48d/biocontainers/mulled-v2-***:***-0 \
---cpu 12 --mem 72 --job /tmp/nextflow5377817282489183149.command.run \
---env FUSION_WORK=/fusion/s3/cedric-memverge-test/nf-work/work/31/a4b682beb93c944fbd3a342ffc41c5 \
---env AWS_ACCESS_KEY_ID=*** --env AWS_SECRET_ACCESS_KEY=*** \
---env FUSION_TAGS=[.command.*|.exitcode|.fusion.*](nextflow.io/metadata=true),[*](nextflow.io/temporary=true) \
---extraContainerOpts --privileged --customTag nf-job-id:znzjht-4
+```bash
+float -a 34.71.114.123 -u admin -p '***' submit
+    --image 'wave.seqera.io/wt/dfd4c4e2d48d/biocontainers/mulled-v2-***:***-0'
+    --cpu 12
+    --mem 72
+    --job /tmp/nextflow5377817282489183149.command.run
+    --env FUSION_WORK=/fusion/s3/cedric-memverge-test/nf-work/work/31/a4b682beb93c944fbd3a342ffc41c5
+    --env AWS_ACCESS_KEY_ID=***
+    --env AWS_SECRET_ACCESS_KEY=***
+    --env 'FUSION_TAGS=[.command.*|.exitcode|.fusion.*](nextflow.io/metadata=true),[*](nextflow.io/temporary=true)'
+    --extraContainerOpts --privileged
+    --customTag nf-job-id:znzjht-4
 ```
 * the task image is wrapped by a layer provided by wave.
   __note__: releases prior to MMC 2.3.1 has bug that fails the image pull requests to the wave registry.  
@@ -248,7 +259,27 @@ Tests for the fusion support.
 * the test profile of nf-core/rnaseq
 * the test profile of nf-core/sarek
 
-## Task Sample
+### Configure VM creation and migration policies
+
+While the VM and migration policies can be specified like any CLI option via `float.commonExtra`,
+they can also be specified using the config options `float.vmPolicy` and `float.migratePolicy` as maps:
+
+```groovy
+float {
+    vmPolicy = [
+        spotFirst: true,
+        retryLimit: 3,
+        retryInterval: '10m'
+    ]
+
+    migratePolicy = [
+        cpu: [upperBoundRatio: 90, upperBoundDuration: '10s'],
+        mem: [lowerBoundRatio: 20, upperBoundRatio: 90]
+    ]
+}
+```
+
+## Process definition
 
 For each process, users could supply their requirements for the CPU, memory and container image using the standard Nextflow process directives.
 Here is an example of a hello world workflow.
@@ -273,12 +304,16 @@ workflow {
 }
 ```
 
-* `executor 'float'` - tells Nextflow to execute tasks with Float.
-* `cpus` - specifies the number of cores required by this process.
-* `memory` specifies the memory.
-* `container` - specifies the container image.
-* `extra` - specifies extra parameters for the job.  It will be merged with
-            the `commonExtra` parameter.
+The following process directives are supported for specifying task resources:
+
+* `conda` (only when using [Wave](https://seqera.io/wave/))
+* `container`
+* `cpus`
+* `disk` (controls the size of the root volume)
+* `machineType`
+* `memory`
+* `resourceLabels`
+* `time`
 
 ## Run the Workflow
 
@@ -289,36 +324,6 @@ file and task file as arguments.  Here is an example.
 ./nextflow run samples/tutorial.nf -c conf/float-rt.conf
 ```
 
-## Plugin Assets
-                    
-- `settings.gradle`
-
-    Gradle project settings. 
-
-- `plugins/nf-float`
-
-    The plugin implementation base directory.
-
-- `plugins/nf-float/build.gradle` 
-
-    Plugin Gradle build file
-
-- `plugins/nf-float/src/resources/META-INF/MANIFEST.MF` 
-
-    Manifest file defining the plugin attributes.
-
-- `plugins/nf-float/src/resources/META-INF/extensions.idx`
-
-    This file declares one or more extension classes provided by the plugin.
-
-- `plugins/nf-float/src/main` 
-
-    The plugin implementation sources.
-
-- `plugins/nf-float/src/test` 
-
-    The plugin unit tests. 
-
 ## Unit testing 
 
 Run the following command in the project root directory (ie. where the file `settings.gradle` is located):

plugins/nf-float/src/main/com/memverge/nextflow/FloatConf.groovy

@@ -44,6 +44,8 @@ class FloatConf {
     String s3secretKey
 
     /** parameters for submitting the tasks */
+    String vmPolicy
+    String migratePolicy
     String commonExtra
 
     /**
@@ -118,6 +120,13 @@ class FloatConf {
                     .findAll { it.size() > 0 }
         }
         this.nfs = floatNode.nfs
+
+        if (floatNode.vmPolicy) {
+            this.vmPolicy = collapseMapToString(floatNode.vmPolicy as Map)
+        }
+        if (floatNode.migratePolicy) {
+            this.migratePolicy = collapseMapToString(floatNode.migratePolicy as Map)
+        }
         this.commonExtra = floatNode.commonExtra
 
         if (floatNode.cpu)
@@ -134,13 +143,22 @@ class FloatConf {
             warnDeprecated("float.container", "process.container")
     }
 
-    private static def warnDeprecated(String deprecated, String replacement) {
+    private String collapseMapToString(Map map) {
+        final collapsedStr = map
+                .toConfigObject()
+                .flatten()
+                .collect( (k, v) -> "${k}=${v}" )
+                .join(',')
+        return "[${collapsedStr}]"
+    }
+
+    private static void warnDeprecated(String deprecated, String replacement) {
         log.warn "[float] config option `$deprecated` " +
                 "is no longer supported, " +
                 "use `$replacement` instead"
     }
 
-    private def initAwsConf(Map conf) {
+    private void initAwsConf(Map conf) {
         def cred = Global.getAwsCredentials(System.getenv(), conf)
         if (cred && cred.size() > 1) {
             s3accessKey = cred[0]

plugins/nf-float/src/main/com/memverge/nextflow/FloatGridExecutor.groovy

@@ -207,6 +207,19 @@ class FloatGridExecutor extends AbstractGridExecutor {
                 : [:]
     }
 
+    private Map<String,String> getCustomTags(TaskRun task) {
+        final result = new LinkedHashMap<String,String>(10)
+        result[FloatConf.NF_JOB_ID] = floatJobs.getJobName(task.id)
+        result.'nextflow.io/processName' = task.processor.name
+        result.'nextflow.io/runName' = session.runName
+        result.'nextflow.io/sessionId' = "uuid-${session.uniqueId}".toString()
+        result.'nextflow.io/taskName' = task.name
+        final resourceLabels = task.config.getResourceLabels()
+        if( resourceLabels )
+            result.putAll(resourceLabels)
+        return result
+    }
+
     @Override
     List<String> getSubmitCommandLine(TaskRun task, Path scriptFile) {
         return getSubmitCommandLine(new FloatTaskHandler(task, this), scriptFile)
@@ -217,11 +230,9 @@ class FloatGridExecutor extends AbstractGridExecutor {
 
         validate(task)
 
-        final jobName = floatJobs.getJobName(task.id)
-        final String tag = "${FloatConf.NF_JOB_ID}:${jobName}"
         final container = task.getContainer()
         if (!container) {
-            throw new AbortOperationException("container is empty." +
+            throw new AbortOperationException("container is empty. " +
                     "you can specify a default container image " +
                     "with `process.container`")
         }
@@ -239,7 +250,24 @@ class FloatGridExecutor extends AbstractGridExecutor {
             cmd << '--extraContainerOpts'
             cmd << '--privileged'
         }
-        cmd << '--customTag' << tag
+        getCustomTags(task).each { key, val ->
+            cmd << '--customTag' << "${key}:${val}".toString()
+        }
+        if (task.config.getMachineType()) {
+            cmd << '--instType' << task.config.getMachineType()
+        }
+        if (task.config.getDisk()) {
+            cmd << '--rootVolSize' << task.config.getDisk().toGiga().toString()
+        }
+        if (task.config.getTime()) {
+            cmd << '--timeLimit' << "${task.config.getTime().toSeconds()}s".toString()
+        }
+        if (floatConf.vmPolicy) {
+            cmd << '--vmPolicy' << floatConf.vmPolicy
+        }
+        if (floatConf.migratePolicy) {
+            cmd << '--migratePolicy' << floatConf.migratePolicy
+        }
         cmd.addAll(getExtra(task))
         log.info "[float] submit job: ${toLogStr(cmd)}"
         return cmd

plugins/nf-float/src/test/com/memverge/nextflow/FloatBaseTest.groovy

@@ -94,6 +94,7 @@ class FloatBaseTest extends BaseTest {
         task.id = taskID
         task.index = taskSerial.incrementAndGet()
         task.workDir = Paths.get(workDir)
+        task.name = "foo (${task.index})"
         return task
     }
 

plugins/nf-float/src/test/com/memverge/nextflow/FloatConfTest.groovy

@@ -186,4 +186,26 @@ class FloatConfTest extends BaseTest {
         then:
         volume == 'nfs://1.2.3.4/work/dir:/local'
     }
+
+    def "get vm policy from config"() {
+        expect:
+        FloatConf.getConf([float: [vmPolicy: CONF]]).vmPolicy == STR
+
+        where:
+        CONF                                              | STR
+        [spotOnly:true,retryLimit:10,retryInterval:'30s'] | '[spotOnly=true,retryLimit=10,retryInterval=30s]'
+        [spotOnly:true,priceLimit:0.1]                    | '[spotOnly=true,priceLimit=0.1]'
+    }
+
+    def "get migrate policy from config"() {
+        expect:
+        FloatConf.getConf([float: [migratePolicy: CONF]]).migratePolicy == STR
+
+        where:
+        CONF                                                | STR
+        [disable:true]                                      | '[disable=true]'
+        [cpu:[upperBoundRatio:90,upperBoundDuration:'10s']] | '[cpu.upperBoundRatio=90,cpu.upperBoundDuration=10s]'
+        [cpu:[lowerBoundRatio:30],mem:[upperBoundRatio:90]] | '[cpu.lowerBoundRatio=30,mem.upperBoundRatio=90]'
+        [cpu:[step:50]]                                     | '[cpu.step=50]'
+    }
 }

plugins/nf-float/src/test/com/memverge/nextflow/FloatGridExecutorTest.groovy

@@ -269,13 +269,73 @@ class FloatGridExecutorTest extends FloatBaseTest {
         cmd.join(' ') == expected.join(' ')
     }
 
+    def "use machine type directive"() {
+        given:
+        final exec = newTestExecutor()
+        final task = newTask(exec, new TaskConfig(
+                container: image,
+                machineType: 't2.xlarge',
+        ))
+
+        when:
+        final cmd = exec.getSubmitCommandLine(task, Paths.get(script))
+
+        then:
+        cmd.join(' ').contains('--instType t2.xlarge')
+    }
+
+    def "use disk directive"() {
+        given:
+        final exec = newTestExecutor()
+        final task = newTask(exec, new TaskConfig(
+                container: image,
+                disk: '40G',
+        ))
+
+        when:
+        final cmd = exec.getSubmitCommandLine(task, Paths.get(script))
+
+        then:
+        cmd.join(' ').contains('--rootVolSize 40')
+    }
+
+    def "use time directive"() {
+        given:
+        final exec = newTestExecutor()
+        final task = newTask(exec, new TaskConfig(
+                container: image,
+                time: '24h',
+        ))
+
+        when:
+        final cmd = exec.getSubmitCommandLine(task, Paths.get(script))
+
+        then:
+        cmd.join(' ').contains('--timeLimit 86400s')
+    }
+
+    def "use resourceLabels directive"() {
+        given:
+        final exec = newTestExecutor()
+        final task = newTask(exec, new TaskConfig(
+                container: image,
+                resourceLabels: [foo: 'bar'],
+        ))
+
+        when:
+        final cmd = exec.getSubmitCommandLine(task, Paths.get(script))
+
+        then:
+        cmd.join(' ').contains('--customTag foo:bar')
+    }
+
     private def taskStatus(int i, String st) {
         return """
-            {                                                           
-                "id": "task$i",                          
-                "name": "tJob-$i",                                                                                            
-                "user": "admin",                                        
-                "imageID": "docker.io/memverge/cactus:latest",          
+            {
+                "id": "task$i",
+                "name": "tJob-$i",
+                "user": "admin",
+                "imageID": "docker.io/memverge/cactus:latest",
                 "status": "$st",
                 "customTags": {
                     "nf-job-id": "tJob-$i"