modernize-wml-pipeline (#1227)

* modernized-wml-pipeline

* simplifying-params

samples/ibm-samples/watson/watson_train_serve_pipeline.py

@@ -16,60 +16,63 @@ CONFIG_FILE_URL = 'https://raw.githubusercontent.com/user-name/kfp-secrets/maste
 
 # generate default secret name
 import os
-secret_name = 'ai-pipeline-' + os.path.splitext(os.path.basename(CONFIG_FILE_URL))[0]
-
-# create pipelines
-import kfp.dsl as dsl
+import kfp
+from kfp import components
+from kfp import dsl
 import ai_pipeline_params as params
 
+secret_name = 'kfp-creds'
+configuration_op = components.load_component_from_url('https://raw.githubusercontent.com/kubeflow/pipelines/master/components/ibm-components/commons/config/component.yaml')
+train_op = components.load_component_from_url('https://raw.githubusercontent.com/kubeflow/pipelines/master/components/ibm-components/watson/train/component.yaml')
+store_op = components.load_component_from_url('https://raw.githubusercontent.com/kubeflow/pipelines/master/components/ibm-components/watson/store/component.yaml')
+deploy_op = components.load_component_from_url('https://raw.githubusercontent.com/kubeflow/pipelines/master/components/ibm-components/watson/deploy/component.yaml')
+    
+# create pipelines
+
 @dsl.pipeline(
     name='KFP on WML training',
     description='Kubeflow pipelines running on WML performing tensorflow image recognition.'
 )
 def kfp_wml_pipeline(
+    GITHUB_TOKEN='',
+    CONFIG_FILE_URL='https://raw.githubusercontent.com/user/repository/branch/creds.ini',
+    train_code='tf-model.zip',
+    execution_command='\'python3 convolutional_network.py --trainImagesFile ${DATA_DIR}/train-images-idx3-ubyte.gz --trainLabelsFile ${DATA_DIR}/train-labels-idx1-ubyte.gz --testImagesFile ${DATA_DIR}/t10k-images-idx3-ubyte.gz --testLabelsFile ${DATA_DIR}/t10k-labels-idx1-ubyte.gz --learningRate 0.001 --trainingIters 20000\'',
+    framework= 'tensorflow',
+    framework_version = '1.5',
+    runtime = 'python',
+    runtime_version = '3.5',
+    run_definition = 'wml-tensorflow-definition',
+    run_name = 'wml-tensorflow-run',
+    model_name='wml-tensorflow-mnist',
+    scoring_payload='tf-mnist-test-payload.json'
 ):
     # op1 - this operation will create the credentials as secrets to be used by other operations
-    config_op = dsl.ContainerOp(
-        name="config",
-        image="aipipeline/wml-config",
-        command=['python3'],
-        arguments=['/app/config.py', 
-                   '--token', GITHUB_TOKEN, 
-                   '--url', CONFIG_FILE_URL],
-        file_outputs={'secret-name' : '/tmp/'+secret_name}
+    get_configuration = configuration_op(
+                   token = GITHUB_TOKEN,
+                   url = CONFIG_FILE_URL,
+                   name = secret_name
     )
     
     # op2 - this operation trains the model with the model codes and data saved in the cloud object store
-    train_op = dsl.ContainerOp(
-        name="train",
-        image="aipipeline/wml-train",
-        command=['python3'],
-        arguments=['/app/wml-train.py',
-                   '--config', config_op.output,
-                   '--train-code', 'tf-model.zip',
-                   '--execution-command', '\'python3 convolutional_network.py --trainImagesFile ${DATA_DIR}/train-images-idx3-ubyte.gz --trainLabelsFile ${DATA_DIR}/train-labels-idx1-ubyte.gz --testImagesFile ${DATA_DIR}/t10k-images-idx3-ubyte.gz --testLabelsFile ${DATA_DIR}/t10k-labels-idx1-ubyte.gz --learningRate 0.001 --trainingIters 20000\''],
-        file_outputs={'run-uid' : '/tmp/run_uid'}).apply(params.use_ai_pipeline_params(secret_name))
+    wml_train = train_op(
+                   get_configuration.output,
+                   train_code,
+                   execution_command
+                   ).apply(params.use_ai_pipeline_params(secret_name))
     
     # op3 - this operation stores the model trained above
-    store_op = dsl.ContainerOp(
-        name="store",
-        image="aipipeline/wml-store",
-        command=['python3'],
-        arguments=['/app/wml-store.py', 
-                   '--run-uid', train_op.output,
-                   '--model-name', 'python-tensorflow-mnist'],
-        file_outputs={'model-uid' : '/tmp/model_uid'}).apply(params.use_ai_pipeline_params(secret_name))
+    wml_store = store_op(
+                   wml_train.output,
+                   model_name
+                  ).apply(params.use_ai_pipeline_params(secret_name))
     
     # op4 - this operation deploys the model to a web service and run scoring with the payload in the cloud object store
-    deploy_op = dsl.ContainerOp(
-        name="deploy",
-        image="aipipeline/wml-deploy",
-        command=['python3'],
-        arguments=['/app/wml-deploy.py',
-                   '--model-uid', store_op.output,
-                   '--model-name', 'python-tensorflow-mnist',
-                   '--scoring-payload', 'tf-mnist-test-payload.json'],
-        file_outputs={'output' : '/tmp/output'}).apply(params.use_ai_pipeline_params(secret_name))
+    wml_deploy = deploy_op(
+                  wml_store.output,
+                  model_name,
+                  scoring_payload
+                 ).apply(params.use_ai_pipeline_params(secret_name))
 
 if __name__ == '__main__':
     # compile the pipeline