Fix: expose get cluster configuration API (#648)

* fix get and ssh cli calls, add get_configuration api

* update builds to lint aztk_cli in parallel

* remove unnecessary get_configuration calls

.travis.yml

@@ -9,7 +9,7 @@ install:
 
 script:
   - yapf --style .style.yapf -dpr aztk/ aztk_cli/
-  - pylint -E aztk
+  - pylint -j 2 -E aztk aztk_cli
   - pytest --ignore=tests/integration_tests
 
 branches:

.vsts-ci.yml

@@ -24,7 +24,7 @@ phases:
       displayName: yapf
 
     - script: |
-        pylint -E aztk
+        pylint -j 2 -E aztk aztk_cli
       condition: succeeded()
       displayName: pylint
     

aztk/client/base/base_operations.py

@@ -24,7 +24,7 @@ def __init__(self, context):
         self.blob_client = context['blob_client']
         self.secrets_configuration = context['secrets_configuration']
 
-    def get_cluster_config(self, id: str) -> models.ClusterConfiguration:
+    def get_cluster_configuration(self, id: str) -> models.ClusterConfiguration:
         """Open an ssh tunnel to a node
 
         Args:

aztk/spark/client/cluster/helpers/get_configuration.py

@@ -0,0 +1,11 @@
+import azure.batch.models.batch_error as batch_error
+
+from aztk import error
+from aztk.utils import helpers
+
+
+def get_configuration(core_cluster_operations, cluster_id: str):
+    try:
+        return core_cluster_operations.get_cluster_configuration(cluster_id)
+    except batch_error.BatchErrorException as e:
+        raise error.AztkError(helpers.format_batch_exception(e))

aztk/spark/client/cluster/operations.py

@@ -3,7 +3,8 @@
 from aztk.spark.client.base import SparkBaseOperations
 
 from .helpers import (copy, create, create_user, delete, diagnostics, download, get, get_application_log,
-                      get_application_status, get_remote_login_settings, list, node_run, run, submit, wait)
+                      get_application_status, get_configuration, get_remote_login_settings, list, node_run, run, submit,
+                      wait)
 
 
 class ClusterOperations(SparkBaseOperations):
@@ -248,3 +249,14 @@ def wait(self, id: str, application_name: str):
             :obj:`None`
         """
         return wait.wait_for_application_to_complete(self._core_cluster_operations, id, application_name)
+
+    def get_configuration(self, id: str):
+        """Get the initial configuration of the cluster
+
+        Args:
+            id (:obj:`str`): the id of the cluster
+
+        Returns:
+            :obj:`aztk.spark.models.ClusterConfiguration`
+        """
+        return get_configuration.get_configuration(self._core_cluster_operations, id)

aztk_cli/spark/endpoints/cluster/cluster_get.py

@@ -20,8 +20,9 @@ def execute(args: typing.NamedTuple):
     cluster = spark_client.cluster.get(cluster_id)
     utils.print_cluster(spark_client, cluster, args.internal)
 
-    configuration = spark_client.cluster.get_cluster_config(cluster_id)
-    if configuration and args.show_config:
-        log.info("-------------------------------------------")
-        log.info("Cluster configuration:")
-        utils.print_cluster_conf(configuration, False)
+    if args.show_config:
+        configuration = spark_client.cluster.get_configuration(cluster_id)
+        if configuration:
+            log.info("-------------------------------------------")
+            log.info("Cluster configuration:")
+            utils.print_cluster_conf(configuration, False)

aztk_cli/spark/endpoints/cluster/cluster_ssh.py

@@ -37,7 +37,7 @@ def setup_parser(parser: argparse.ArgumentParser):
 def execute(args: typing.NamedTuple):
     spark_client = aztk.spark.Client(config.load_aztk_secrets())
     cluster = spark_client.cluster.get(args.cluster_id)
-    cluster_config = spark_client.cluster.get_cluster_config(args.cluster_id)
+    cluster_configuration = spark_client.cluster.get_configuration(args.cluster_id)
     ssh_conf = SshConfig()
 
     ssh_conf.merge(
@@ -55,21 +55,21 @@ def execute(args: typing.NamedTuple):
     utils.log_property("open webui", "{0}{1}".format(http_prefix, ssh_conf.web_ui_port))
     utils.log_property("open jobui", "{0}{1}".format(http_prefix, ssh_conf.job_ui_port))
     utils.log_property("open jobhistoryui", "{0}{1}".format(http_prefix, ssh_conf.job_history_ui_port))
-    print_plugin_ports(cluster_config)
+    print_plugin_ports(cluster_configuration)
     utils.log_property("ssh username", ssh_conf.username)
     utils.log_property("connect", ssh_conf.connect)
     log.info("-------------------------------------------")
 
     try:
-        shell_out_ssh(spark_client, ssh_conf)
+        shell_out_ssh(spark_client, cluster_configuration, ssh_conf)
     except OSError:
         # no ssh client is found, falling back to pure python
-        native_python_ssh_into_master(spark_client, cluster, ssh_conf, args.password)
+        native_python_ssh_into_master(spark_client, cluster, cluster_configuration, ssh_conf, args.password)
 
 
-def print_plugin_ports(cluster_config: ClusterConfiguration):
-    if cluster_config and cluster_config.plugins:
-        plugins = cluster_config.plugins
+def print_plugin_ports(cluster_configuration: ClusterConfiguration):
+    if cluster_configuration and cluster_configuration.plugins:
+        plugins = cluster_configuration.plugins
         has_ports = False
         plugin_ports = {}
         for plugin in plugins:
@@ -93,12 +93,12 @@ def print_plugin_ports(cluster_config: ClusterConfiguration):
                     utils.log_property(label, url)
 
 
-def native_python_ssh_into_master(spark_client, cluster, ssh_conf, password):
+def native_python_ssh_into_master(spark_client, cluster, cluster_configuration, ssh_conf, password):
     if not ssh_conf.connect:
         log.warning("No ssh client found, using pure python connection.")
         return
 
-    configuration = spark_client.cluster.get_cluster_config(cluster.id)
+    configuration = spark_client.cluster.get_configuration(cluster.id)
     plugin_ports = []
     if configuration and configuration.plugins:
         ports = [
@@ -124,11 +124,12 @@ def native_python_ssh_into_master(spark_client, cluster, ssh_conf, password):
         internal=ssh_conf.internal)
 
 
-def shell_out_ssh(spark_client, ssh_conf):
+def shell_out_ssh(spark_client, cluster_configuration, ssh_conf):
     try:
         ssh_cmd = utils.ssh_in_master(
             client=spark_client,
             cluster_id=ssh_conf.cluster_id,
+            cluster_configuration=cluster_configuration,
             webui=ssh_conf.web_ui_port,
             jobui=ssh_conf.job_ui_port,
             jobhistoryui=ssh_conf.job_history_ui_port,

aztk_cli/utils.py

@@ -130,6 +130,7 @@ def stream_logs(client, cluster_id, application_name):
 
 def ssh_in_master(client,
                   cluster_id: str,
+                  cluster_configuration: models.ClusterConfiguration,
                   username: str = None,
                   webui: str = None,
                   jobui: str = None,
@@ -152,7 +153,6 @@ def ssh_in_master(client,
 
     # Get master node id from task (job and task are both named pool_id)
     cluster = client.cluster.get(cluster_id)
-    configuration = client.cluster.get_cluster_config(cluster_id)
 
     master_node_id = cluster.master_node_id
 
@@ -186,8 +186,8 @@ def ssh_in_master(client,
     if ports is not None:
         for port in ports:
             ssh_command.add_option("-L", "{0}:localhost:{1}".format(port[0], port[1]))
-    if configuration and configuration.plugins:
-        for plugin in configuration.plugins:
+    if cluster_configuration and cluster_configuration.plugins:
+        for plugin in cluster_configuration.plugins:
             for port in plugin.ports:
                 if port.expose_publicly:
                     ssh_command.add_option("-L", "{0}:localhost:{1}".format(port.public_port, port.internal))