Bug fixes and performance improvements

0.7.1

Released on Nov 5, 2019

Features

• None

Enhancements

• Add a save/load interface to Flows - #1685, #1695
• Add option to specify aws_session_token for the FargateTaskEnvironment - #1688
• Add EnvVarSecrets for loading sensitive information from environment variables - #1683
• Add an informative version header to all Cloud client requests - #1690
• Auto-label Flow environments when using Local storage - #1696
• Batch upload logs to Cloud in a background thread for improved performance - #1691
• Include agent labels within each flow's configuration environment - #1671

Task Library

• None

Fixes

• Fix Fargate Agent access defaults and environment variable support - #1687
• Removed default python version for docker builds - #1705
• Attempt to install prefect in any docker image (if it is not already installed) - #1704
• Kubernetes Agent deployment yaml now respects new prefecthq/prefect image tagging convention - #1707

Deprecations

• None

Breaking Changes

• None

Contributors

• None

To Affinity and Beyond

0.7.0

Released on October 29th, 2019.

Features

• Flow Affinity: Environments and Agents now support labeling for execution specification - #1651
• Add new Secret Tasks for a pluggable and reusable Secrets API - #1346, #1587

Enhancements

• Add the ability to delete task tag limits using the client - #1622
• Adds an "Ask for help" button with a link to the prefect.io support page - #1637
• Reduces the size of the prefecthq/prefect Docker image by ~400MB, which is now the base Docker image used in Flows - #1648
• Add a new healthcheck for environment dependencies - #1653
• Add default 30 second timeout to Client requests - #1672

Task Library

• Add new Secret Tasks for a pluggable and reusable Secrets API - #1346, #1587
• Add support for directly passing credentials to task library tasks, instead of passing secret names - #1667

Fixes

• Fix defaults for unspecified ARNs in the Fargate Agent - #1634
• Fix ShellTask return value on empty stdout - #1632
• Fix issue with some Cloud Secrets not being converted from strings - #1655
• Fix issue with Agent logging config setting not working - #1657
• Fix issue with SnowflakeQuery tasks not working - #1663

Deprecations

• Tasks that accepted the name of a secret (often credentials_secret) will raise a deprecation warning - #1667

Breaking Changes

• Fargate Agent now takes in all boto3 camel case arguments instead of specific snake case options - #1649
• kubernetes is no longer installed by default in deployed flow images - #1653
• Tasks that accepted the name of a secret (often credentials_secret) no longer have a default value for that argument, as it has been deprecated - #1667

Contributors

• Tobias Schmidt

Oh Six Seven

Changelog

0.6.7

Released on Oct 16, 2019

Features

• Environments now allow for optional on_start and on_exit callbacks - #1610

Enhancements

• Raise more informative error when calling flow.visualize() if Graphviz executable not installed - #1602
• Allow authentication to Azure Blob Storage with SAS token - #1600
• Additional debug logs to Docker Container and Docker Image tasks - #920
• Changes to Fargate agent to support temporary credentials and IAM role based credentials within AWS compute such as a container or ec2 instance. #1607
• Local Secrets set through environment variable now retain their casing - #1601
• Agents can accept an optional name for logging and debugging - #1612
• Added AWS configuration options for Fargate Agent (task_role_arn, execution_role_arn) - #1614
• Change EmailTask to accept SMTP server settings as well as an email_from kwarg - #1619

Task Library

• Add return_all kwarg to ShellTask for optionally returning all lines of stdout - #1598
• Add CosmosDBCreateItem, CosmosDBReadItems, CosmosDBQueryItems and for interacting with data stored on Azure Cosmos DB - #1617

Fixes

• Fix issue with running local Flow without a schedule containing cached tasks - #1599
• Remove blank string for task_run_id in k8s resource manager - #1604
• Fix issue with merge task not working for pandas dataframes and numpy arrays - #1609

Deprecations

• None

Breaking Changes

• Local Secrets set through environment variable now retain their casing - #1601

Contributors

• Mark McDonald
• Sherman K

Wait for it...

0.6.6

Released on October 3, 2019

Features

• Added KubernetesJobEnvironment - #1548
• Add ability to enforce Task concurrency limits by tag in Prefect Cloud - #1570
• Added FargateTaskEnvironment - #1592

Enhancements

• Allow the Client to more gracefully handle failed login attempts on initialization - #1535
• Replace DotDict with box.Box - #1518
• Store cached_inputs on Failed states and call their result handlers if they were provided - #1557
• raise_on_exception no longer raises for Prefect Signals, as these are typically intentional / for control flow - #1562
• run cloud CLI command takes in optional --parameters as a file path pointing to a JSON file - #1582
• Always consider Constant tasks successful and unpack them immediately instead of submitting them for execution - #1527

Task Library

• Add BlobStorageDownload and BlobStorageUpload for interacting with data stored on Azure Blob Storage - #1538
• Loosen Kubernetes Tasks' requirement of an API secret key - #1559
• Add tasks for working in Azure Machine Learning Serviec with Datastores and Datasets - #1590

Fixes

• Fix issue with certain Pause / Resume / Retry pipelines retrying indefinitely - #1177
• Kubernetes Agent deployment YAML generation defaults to local Prefect version - #1573
• Fix issue with custom result handlers not working when called in cached_inputs - #1585

Deprecations

• None

Breaking Changes

• None

Contributors

• Fredrik Sannholm

Agents of Environmental Change

Changelog

Released on September 19th, 2019.

Features

• Added Fargate agent - #1521
• Custom user-written environments can be deployed to Prefect Cloud - #1534, #1537

Enhancements

• Allow for Agents to correctly run in environments with differently calibrated clocks - #1402
• Refactor RemoteEnvironment to utilize the get_flow storage interface - #1476
• Ensure Task logger is available in context throughout every pipeline step of the run - #1509
• Skip Docker registry pushing and pulling on empty registry_url attribute - #1525
• Agents now log platform errors to flow runs which cannot deploy - #1528
• Updating ShellTask to work more like Airflow Bash Operator for streaming logs and returning values - #1451
• Agents now have a verbose/debug logging option for granular output - #1532
• DaskKubernetesEnvironment now allows for custom scheduler and worker specs - #1543, #1537

Task Library

• None

Fixes

• Fix map error by removing imagePullSecrets from Kubernetes Agent install if not provided - #1524
• Fix issue with two INFO logs not being associated with the Task Run in Cloud - #1526
• execute CLI command can now load custom environments off of the flow object - #1534

Deprecations

• None

Breaking Changes

• Update ShellTask to return only the last line of stdout, as a string - #1451

Contributors

• braunreyes

I installed Docker on a Windows machine and all I got was this release

Changelog

Released on September 10, 2019

Features

• Improve Windows compatibility for local development and deploying to Prefect Cloud - #1441, #1456, #1465, #1466

Enhancements

• Add OS platform check to Local Agent for running on Windows machines - #1441
• Add --base-url argument for Docker daemons to agent start CLI command - #1441
• Add environment labels for organizing / tagging different Flow execution environments - #1438
• Use -U option when installing prefect in Docker containers to override base image version - #1461
• Remove restriction that prevented DotDict classes from having keys that shadowed dict methods - #1462
• Added livenessProbe to Kubernetes Agent - #1474
• Ensure external Dask Clusters do not require Prefect Cloud environment variables to run Cloud flows - #1481

Task Library

• None

Fixes

• Fix incorrect import in DaskKubernetesEnvironment job template - #1458
• Raise error on Agents started without an appropriate API token - #1459
• Fix bug when calling as_nested_dict on DotDicts with an items key - #1462
• Fix --resource-manager flag on agent install invalidating imagePullSecrets - #1469
• Fix issue with user-written result handlers in Prefect Cloud preventing some states from being set - #1480

Deprecations

• None

Breaking Changes

• None

Contributors

• Joe Schmid
• Brett Naul

Retry Release

0.6.3

Released August 30, 2019

Fixes

• Fix issue with reduced mapped tasks not respecting retries - #1436

Onboards and Upwards

Changelog

0.6.2

Released August 30, 2019

Features

• Added Local, Kubernetes, and Nomad agents - #1341
• Add the ability for Tasks to sequentially loop - #1356

Enhancements

• Adds a copy to clipboard button for codeblocks - #213
• Updates Vuepress to v1.0.3 - #770
• Introduce configurable default for storage class on Flows - #1044
• Allow for min and max workers to be specified in DaskKubernetesEnvironment - #1338
• Use task and flow names for corresponding logger names for better organization - #1355
• Paused states subclass Scheduled and can have predefined expirations - #1375
• Introduce new Flow health checks prior to Cloud deployment - #1372
• Improve logging functionality to include tracebacks - #1374
• Improve CLI user experience while working with Cloud - #1384
• Users can now create projects from the CLI - #1388
• Add a health check to confirm that serialized flows are valid prior to Cloud deploy - #1397
• Add task_slug, flow_id, and flow_run_id to context - #1405
• Support persistent scheduled_start_time for scheduled flow runs when run locally with flow.run() - #1418, #1429
• Add task_args to Task.map - #1390
• Add auth flows for USER-scoped Cloud API tokens - #1423
• Add AzureResultHandler for handling results to / from Azure Blob storage containers - #1421
• Add new configurable LocalDaskExecutor - #1336
• Add CLI commands for working with Prefect Cloud auth - #1431

Task Library

• Add new SnowflakeQuery task for using snowflake data warehouse - #1113

Fixes

• Fix issue with Docker storage not respecting user-provided image names - #1335
• Fix issue with local retries in Cloud not always running in-process - #1348

Deprecations

• Rename SynchronousExecutor as LocalDaskExecutor - #1434

Breaking Changes

• Rename CloudEnvironment to DaskKubernetesEnvironment - #1250
• Remove unused queue method from all executors - #1434

Contributors

• Alex Kravetz

Prefect Timing

Changelog

0.6.1

Released August 8, 2019

Features

• Introduce new flows.checkpointing configuration setting for checkpointing Tasks in local execution - #1283
• Introduce new, flexible Schedule objects - #1320

Enhancements

• Allow passing of custom headers in Client calls - #1255
• Autogenerate informative names and tags for Docker images built for Flow storage - #1237
• Allow mixed-case configuration keys (environment variables are interpolated as lowercase) - #1288
• Ensure state handler errors are logged informatively - #1326

Task Library

• Add BigQueryLoadGoogleCloudStorage task for loading data into BigQuery from Google Cloud Storage #1317

Fixes

• Fix issue with logs not always arriving in long-standing Dask clusters - #1244
• Fix issue with BuildImage docker task not actually running to completion - #1243
• Fix run --logs CLI command not exiting on flow run finished state - #1319

Deprecations

• OneTimeSchedule and UnionSchedule are deprecated, but remain callable as convenience functions - #1320
• Old-style schedules can be deserialized as new-style schedules, but support will eventually be dropped - #1320

Breaking Changes

• prefect.Client.graphql() and prefect.Client.post() now use an explicit keyword, not **kwargs, for variables or parameters - #1259
• auth add CLI command replaced with auth login - #1319

Cloud Ready

Changelog

0.6.0

Released July 16, 2019

Features

• Add the Prefect CLI for working with core objects both locally and in cloud - #1059
• Add RemoteEnvironment for simple executor based executions - #1215
• Add the ability to share caches across Tasks and Flows - #1222
• Add the ability to submit tasks to specific dask workers for task / worker affinity - #1229

Enhancements

• Refactor mapped caching to be independent of order - #1082
• Refactor caching to allow for caching across multiple runs - #1082
• Allow for custom secret names in Result Handlers - #1098
• Have execute cloud-flow CLI immediately set the flow run state to Failed if environment fails - #1122
• Validate configuration objects on initial load - #1136
• Add auto_generated property to Tasks for convenient filtering - #1135
• Disable dask work-stealing in kubernetes via scheduler config - #1166
• Implement backoff retry settings on Client calls - #1187
• Explicitly set Dask keys for a better Dask visualization experience - #1218
• Implement a local cache which persists for the duration of a Python session - #1221
• Implement in-process retries for Cloud Tasks which request retry in less than one minute - #1228
• Support Client.login() with API tokens - #1240
• Add live log streaming for prefect run cloud command - #1241

Task Library

• Add task to trigger AWS Step function workflow #1012
• Add task to copy files within Google Cloud Storage - #1206
• Add task for downloading files from Dropbox - #1205

Fixes

• Fix issue with mapped caching in Prefect Cloud - #1096
• Fix issue with Result Handlers deserializing incorrectly in Cloud - #1112
• Fix issue caused by breaking change in marshmallow==3.0.0rc7 - #1151
• Fix issue with passing results to Prefect signals - #1163
• Fix issue with flow.update not preserving mapped edges - #1164
• Fix issue with Parameters and Context not being raw dictionaries - #1186
• Fix issue with asynchronous, long-running mapped retries in Prefect Cloud - #1208
• Fix issue with automatically applied collections to task call arguments when using the imperative API - #1211

Breaking Changes

• The CLI command prefect execute-flow and prefect execute-cloud-flow no longer exist - #1059
• The slack_notifier state handler now uses a webhook_secret kwarg to pull the URL from a Secret - #1075
• Use GraphQL for Cloud logging - #1193
• Remove the CloudResultHandler default result handler - #1198
• Rename LocalStorage to Local - #1236

Contributors

• Kwangyoun Jung
• Anes Benmerzoug