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Published: Mar 18, 2024 License: Apache-2.0, BSD-3-Clause, MIT

README

Go SDK

The Apache Beam Go SDK is the Beam Model implemented in the Go Programming Language. It is based on the following initial design.

How to run the examples

Prerequisites: to use Google Cloud sources and sinks (default for most examples), follow the setup here. You can verify that it works by running the corresponding Java example.

The examples are normal Go programs and are most easily run directly. They are parameterized by Go flags. For example, to run wordcount on the Go direct runner do:

$ pwd
[...]/sdks/go
$ go run examples/wordcount/wordcount.go --output=/tmp/result.txt
[{6: KV<string,int>/GW/KV<bytes,int[varintz]>}]
[{10: KV<int,string>/GW/KV<int[varintz],bytes>}]
2018/03/21 09:39:03 Pipeline:
2018/03/21 09:39:03 Nodes: {1: []uint8/GW/bytes}
{2: string/GW/bytes}
{3: string/GW/bytes}
{4: string/GW/bytes}
{5: string/GW/bytes}
{6: KV<string,int>/GW/KV<bytes,int[varintz]>}
{7: CoGBK<string,int>/GW/CoGBK<bytes,int[varintz]>}
{8: KV<string,int>/GW/KV<bytes,int[varintz]>}
{9: string/GW/bytes}
{10: KV<int,string>/GW/KV<int[varintz],bytes>}
{11: CoGBK<int,string>/GW/CoGBK<int[varintz],bytes>}
Edges: 1: Impulse [] -> [Out: []uint8 -> {1: []uint8/GW/bytes}]
2: ParDo [In(Main): []uint8 <- {1: []uint8/GW/bytes}] -> [Out: T -> {2: string/GW/bytes}]
3: ParDo [In(Main): string <- {2: string/GW/bytes}] -> [Out: string -> {3: string/GW/bytes}]
4: ParDo [In(Main): string <- {3: string/GW/bytes}] -> [Out: string -> {4: string/GW/bytes}]
5: ParDo [In(Main): string <- {4: string/GW/bytes}] -> [Out: string -> {5: string/GW/bytes}]
6: ParDo [In(Main): T <- {5: string/GW/bytes}] -> [Out: KV<T,int> -> {6: KV<string,int>/GW/KV<bytes,int[varintz]>}]
7: CoGBK [In(Main): KV<string,int> <- {6: KV<string,int>/GW/KV<bytes,int[varintz]>}] -> [Out: CoGBK<string,int> -> {7: CoGBK<string,int>/GW/CoGBK<bytes,int[varintz]>}]
8: Combine [In(Main): int <- {7: CoGBK<string,int>/GW/CoGBK<bytes,int[varintz]>}] -> [Out: KV<string,int> -> {8: KV<string,int>/GW/KV<bytes,int[varintz]>}]
9: ParDo [In(Main): KV<string,int> <- {8: KV<string,int>/GW/KV<bytes,int[varintz]>}] -> [Out: string -> {9: string/GW/bytes}]
10: ParDo [In(Main): T <- {9: string/GW/bytes}] -> [Out: KV<int,T> -> {10: KV<int,string>/GW/KV<int[varintz],bytes>}]
11: CoGBK [In(Main): KV<int,string> <- {10: KV<int,string>/GW/KV<int[varintz],bytes>}] -> [Out: CoGBK<int,string> -> {11: CoGBK<int,string>/GW/CoGBK<int[varintz],bytes>}]
12: ParDo [In(Main): CoGBK<int,string> <- {11: CoGBK<int,string>/GW/CoGBK<int[varintz],bytes>}] -> []
2018/03/21 09:39:03 Reading from gs://apache-beam-samples/shakespeare/kinglear.txt
2018/03/21 09:39:04 Writing to /tmp/result.txt

The debugging output is currently quite verbose and likely to change. The output is a local file in this case:

$ head /tmp/result.txt
while: 2
darkling: 1
rail'd: 1
ford: 1
bleed's: 1
hath: 52
Remain: 1
disclaim: 1
sentence: 1
purse: 6

To run wordcount on dataflow runner do:

$  go run wordcount.go --runner=dataflow --project=<YOUR_GCP_PROJECT> --region=<YOUR_GCP_REGION> --staging_location=<YOUR_GCS_LOCATION>/staging --worker_harness_container_image=<YOUR_SDK_HARNESS_IMAGE_LOCATION> --output=<YOUR_GCS_LOCATION>/output

The output is a GCS file in this case:

$ gsutil cat <YOUR_GCS_LOCATION>/output* | head
Blanket: 1
blot: 1
Kneeling: 3
cautions: 1
appears: 4
Deserved: 1
nettles: 1
OSWALD: 53
sport: 3
Crown'd: 1

See BUILD.md for how to build Go code in general. See container documentation for how to build and push the Go SDK harness container image.

Issues

Please use the sdk-go component for any bugs or feature requests.

Contributing to the Go SDK

New to developing Go?

https://tour.golang.org : The Go Tour gives you the basics of the language, interactively no installation required.

https://github.com/campoy/go-tooling-workshop is a great start on learning good (optional) development tools for Go.

Developing Go Beam SDK on Github

The Go SDK uses Go Modules for dependency management so it's as simple as cloning the repo, making necessary changes and running tests.

Executing all unit tests for the SDK is possible from the <beam root>\sdks\go directory and running go test ./....

To test your change as Jenkins would execute it from a PR, from the beam root directory, run:

  • ./gradlew :sdks:go:goTest executes the unit tests.
  • ./gradlew :sdks:go:test:prismValidatesRunner validates the SDK against the Go Prism runner as a stand alone binary, with containers.
  • ./gradlew :sdks:go:test:ulrValidatesRunner validates the SDK against the Portable Python runner.
  • ./gradlew :sdks:go:test:flinkValidatesRunner validates the SDK against the Flink runner.

Follow the contribution guide to create branches, and submit pull requests as normal.

Directories

Path Synopsis
cmd
beamctl
beamctl is a command line client for the Apache Beam portability services.
beamctl is a command line client for the Apache Beam portability services.
beamctl/cmd
Package cmd contains the commands for beamctl.
Package cmd contains the commands for beamctl.
prism
prism is a stand alone local Beam Runner.
prism is a stand alone local Beam Runner.
specialize
specialize is a low-level tool to generate type-specialized code.
specialize is a low-level tool to generate type-specialized code.
starcgen
starcgen is a tool to generate specialized type assertion shims to be used in Apache Beam Go SDK pipelines instead of the default reflection shim.
starcgen is a tool to generate specialized type assertion shims to be used in Apache Beam Go SDK pipelines instead of the default reflection shim.
symtab
Package verifies that functions sym2addr and addr2sym work correctly.
Package verifies that functions sym2addr and addr2sym work correctly.
tools
Package tools contains utilities for Beam bootloader containers, such as for obtaining runtime provision information -- such as pipeline options.
Package tools contains utilities for Beam bootloader containers, such as for obtaining runtime provision information -- such as pipeline options.
examples
cookbook/tornadoes
tornadoes is an example that reads the public samples of weather data from BigQuery, counts the number of tornadoes that occur in each month, and writes the results to BigQuery.
tornadoes is an example that reads the public samples of weather data from BigQuery, counts the number of tornadoes that occur in each month, and writes the results to BigQuery.
debugging_wordcount
debugging_wordcount is an example that verifies word counts in Shakespeare and includes Beam best practices.
debugging_wordcount is an example that verifies word counts in Shakespeare and includes Beam best practices.
fhirio/import
import is a pipeline example using the fhirio connector to bulk import FHIR resources from GCS into a given FHIR store.
import is a pipeline example using the fhirio connector to bulk import FHIR resources from GCS into a given FHIR store.
fhirio/read_write_pubsub
read_write_pubsub is a pipeline example using the fhirio connector to read FHIR resources from GCS, write them to a GCP FHIR store, and, if a PubSub topic is provided, read the written resources from the FHIR store and log them based on the PubSub notifications about store updates.
read_write_pubsub is a pipeline example using the fhirio connector to read FHIR resources from GCS, write them to a GCP FHIR store, and, if a PubSub topic is provided, read the written resources from the FHIR store and log them based on the PubSub notifications about store updates.
forest
forest is an example that shows that pipeline construction is normal Go code -- the pipeline "forest" is created recursively and uses a global variable -- and that a pipeline may contain non-connected parts.
forest is an example that shows that pipeline construction is normal Go code -- the pipeline "forest" is created recursively and uses a global variable -- and that a pipeline may contain non-connected parts.
kafka
taxi is an example using a cross-language Kafka pipeline to write and read to Kafka.
taxi is an example using a cross-language Kafka pipeline to write and read to Kafka.
large_wordcount
large_wordcount is an example that demonstrates a more complex version of a wordcount pipeline.
large_wordcount is an example that demonstrates a more complex version of a wordcount pipeline.
minimal_wordcount
minimal_wordcount is an example that counts words in King Lear, by William Shakespeare.
minimal_wordcount is an example that counts words in King Lear, by William Shakespeare.
multiout
multiout is a wordcount variation that uses a multi-outout DoFn and writes 2 output files.
multiout is a wordcount variation that uses a multi-outout DoFn and writes 2 output files.
native_wordcap
native_wordcap is a toy streaming pipeline that uses PubSub.
native_wordcap is a toy streaming pipeline that uses PubSub.
native_wordcap/nativepubsubio
Package nativepubsubio contains a Golang implementation of streaming reads and writes to PubSub.
Package nativepubsubio contains a Golang implementation of streaming reads and writes to PubSub.
readavro
readavro is a simple Avro read/write Example This example uses a 500 Byte sample avro file [twitter.avro] download here: https://s3-eu-west-1.amazonaws.com/daidokoro-dev/apache/twitter.avro
readavro is a simple Avro read/write Example This example uses a 500 Byte sample avro file [twitter.avro] download here: https://s3-eu-west-1.amazonaws.com/daidokoro-dev/apache/twitter.avro
slowly_updating_side_input
slowly_updating_side_input is an example pipeline demonstrating the pattern described at https://beam.apache.org/documentation/patterns/side-inputs/.
slowly_updating_side_input is an example pipeline demonstrating the pattern described at https://beam.apache.org/documentation/patterns/side-inputs/.
snippets
Package snippets contains code used in the Beam Programming Guide as examples for the Apache Beam Go SDK.
Package snippets contains code used in the Beam Programming Guide as examples for the Apache Beam Go SDK.
streaming_wordcap
streaming_wordcap is a toy streaming pipeline that uses PubSub.
streaming_wordcap is a toy streaming pipeline that uses PubSub.
stringsplit
An example of using a Splittable DoFn in the Go SDK with a portable runner.
An example of using a Splittable DoFn in the Go SDK with a portable runner.
timer_wordcap
timer_wordcap is a toy streaming pipeline that demonstrates the use of State and Timers.
timer_wordcap is a toy streaming pipeline that demonstrates the use of State and Timers.
wasm
wasm is a simple example that loads and executes a wasm file function.
wasm is a simple example that loads and executes a wasm file function.
windowed_wordcount
windowed_wordcount counts words in text, and can run over either unbounded or bounded input collections.
windowed_wordcount counts words in text, and can run over either unbounded or bounded input collections.
wordcount
wordcount is an example that counts words in Shakespeare and demonstrates Beam best practices.
wordcount is an example that counts words in Shakespeare and demonstrates Beam best practices.
xlang
Package xlang contains functionality for testing cross-language transforms.
Package xlang contains functionality for testing cross-language transforms.
xlang/bigquery
Wordcount is an example using cross-language BigQuery transforms to read and write to BigQuery.
Wordcount is an example using cross-language BigQuery transforms to read and write to BigQuery.
xlang/cogroup_by
cogroup_by exemplifies using a cross-language cogroup by key transform from a test expansion service.
cogroup_by exemplifies using a cross-language cogroup by key transform from a test expansion service.
xlang/combine
combine exemplifies using a cross-language combine per key transform from a test expansion service.
combine exemplifies using a cross-language combine per key transform from a test expansion service.
xlang/combine_globally
combine_globally exemplifies using a cross-language combine global transform from a test expansion service.
combine_globally exemplifies using a cross-language combine global transform from a test expansion service.
xlang/group_by
group_by exemplifies using a cross-language group by key transform from a test expansion service.
group_by exemplifies using a cross-language group by key transform from a test expansion service.
xlang/multi_input_output
multi exemplifies using a cross-language transform with multiple inputs and outputs from a test expansion service.
multi exemplifies using a cross-language transform with multiple inputs and outputs from a test expansion service.
xlang/partition
partition exemplifies using a cross-language partition transform from a test expansion service.
partition exemplifies using a cross-language partition transform from a test expansion service.
xlang/sql
Prerequisites to run sql: –> [Required] Job needs to be submitted to a portable runner (--runner=universal) –> [Required] Endpoint of job service needs to be passed (--endpoint=<ip:port>) –> [Required] Endpoint of expansion service needs to be passed (--expansion_addr=<ip:port>) –> [Optional] Environment type can be LOOPBACK.
Prerequisites to run sql: –> [Required] Job needs to be submitted to a portable runner (--runner=universal) –> [Required] Endpoint of job service needs to be passed (--endpoint=<ip:port>) –> [Required] Endpoint of expansion service needs to be passed (--expansion_addr=<ip:port>) –> [Optional] Environment type can be LOOPBACK.
xlang/wordcount
wordcount exemplifies using a cross-language Count transform from a test expansion service to count words.
wordcount exemplifies using a cross-language Count transform from a test expansion service to count words.
yatzy
yatzy is an implementation of https://en.wikipedia.org/wiki/Yatzy that shows that pipeline construction is normal Go code.
yatzy is an implementation of https://en.wikipedia.org/wiki/Yatzy that shows that pipeline construction is normal Go code.
pkg
beam
Package beam is an implementation of the Apache Beam (https://beam.apache.org) programming model in Go.
Package beam is an implementation of the Apache Beam (https://beam.apache.org) programming model in Go.
beam/artifact
Package artifact contains utilities for staging and retrieving artifacts.
Package artifact contains utilities for staging and retrieving artifacts.
beam/artifact/gcsproxy
Package gcsproxy contains artifact staging and retrieval servers backed by GCS.
Package gcsproxy contains artifact staging and retrieval servers backed by GCS.
beam/core
Package core contains constants and other static data related to the SDK, such as the SDK Name and version.
Package core contains constants and other static data related to the SDK, such as the SDK Name and version.
beam/core/funcx
Package funcx contains functions and types used to perform type analysis of Beam functions.
Package funcx contains functions and types used to perform type analysis of Beam functions.
beam/core/graph
Package graph is the internal representation of the Beam execution plan.
Package graph is the internal representation of the Beam execution plan.
beam/core/graph/coder
Package coder contains coder representation and utilities.
Package coder contains coder representation and utilities.
beam/core/graph/coder/testutil
Package testutil contains helpers to test and validate custom Beam Schema coders.
Package testutil contains helpers to test and validate custom Beam Schema coders.
beam/core/graph/mtime
Package mtime contains a millisecond representation of time.
Package mtime contains a millisecond representation of time.
beam/core/graph/window
Package window contains window representation, windowing strategies and utilities.
Package window contains window representation, windowing strategies and utilities.
beam/core/graph/window/trigger
Package trigger helps construct aggregation triggers with beam.WindowInto.
Package trigger helps construct aggregation triggers with beam.WindowInto.
beam/core/metrics
Package metrics implements the Beam metrics API, described at http://s.apache.org/beam-metrics-api
Package metrics implements the Beam metrics API, described at http://s.apache.org/beam-metrics-api
beam/core/runtime
Package runtime contains runtime hooks and utilities for pipeline options and type registration.
Package runtime contains runtime hooks and utilities for pipeline options and type registration.
beam/core/runtime/coderx
Package coderx contains coders for primitive types that aren't included in the beam model.
Package coderx contains coders for primitive types that aren't included in the beam model.
beam/core/runtime/contextreg
Package contextreg contains the global registrations of functions for extracting ptransform annotations or environment resource hints from context.Context attached to scopes.
Package contextreg contains the global registrations of functions for extracting ptransform annotations or environment resource hints from context.Context attached to scopes.
beam/core/runtime/exec
Package exec contains runtime plan representation and execution.
Package exec contains runtime plan representation and execution.
beam/core/runtime/exec/optimized
Package optimized contains type-specialized shims for faster execution.
Package optimized contains type-specialized shims for faster execution.
beam/core/runtime/genx
Package genx is a convenience package to better support the code generator.
Package genx is a convenience package to better support the code generator.
beam/core/runtime/graphx
Package graphx provides facilities to help with the serialization of pipelines into a serializable graph structure suitable for the worker.
Package graphx provides facilities to help with the serialization of pipelines into a serializable graph structure suitable for the worker.
beam/core/runtime/graphx/schema
Package schema contains utility functions for relating Go types and Beam Schemas.
Package schema contains utility functions for relating Go types and Beam Schemas.
beam/core/runtime/harness
Package harness implements the SDK side of the Beam FnAPI.
Package harness implements the SDK side of the Beam FnAPI.
beam/core/runtime/harness/init
Package init contains the harness initialization code defined by the FnAPI.
Package init contains the harness initialization code defined by the FnAPI.
beam/core/runtime/harness/statecache
Package statecache implements the state caching feature described by the Beam Fn API
Package statecache implements the state caching feature described by the Beam Fn API
beam/core/runtime/pipelinex
Package pipelinex contains utilities for manipulating Beam proto pipelines.
Package pipelinex contains utilities for manipulating Beam proto pipelines.
beam/core/runtime/xlangx
Package xlangx contains various low-level utilities needed for adding cross-language transforms to the pipeline.
Package xlangx contains various low-level utilities needed for adding cross-language transforms to the pipeline.
beam/core/runtime/xlangx/expansionx
Package expansionx contains utilities for starting expansion services for cross-language transforms.
Package expansionx contains utilities for starting expansion services for cross-language transforms.
beam/core/sdf
Package contains interfaces used specifically for splittable DoFns.
Package contains interfaces used specifically for splittable DoFns.
beam/core/state
Package state contains structs for reading and manipulating pipeline state.
Package state contains structs for reading and manipulating pipeline state.
beam/core/timers
Package timers contains structs for setting pipeline timers.
Package timers contains structs for setting pipeline timers.
beam/core/typex
Package typex contains full type representation for PCollections and DoFns, and utilities for type checking.
Package typex contains full type representation for PCollections and DoFns, and utilities for type checking.
beam/core/util/dot
Package dot produces DOT graphs from Beam graph representations.
Package dot produces DOT graphs from Beam graph representations.
beam/core/util/hooks
Package hooks allows runners to tailor execution of the worker harness.
Package hooks allows runners to tailor execution of the worker harness.
beam/core/util/ioutilx
Package ioutilx contains additional io utilities.
Package ioutilx contains additional io utilities.
beam/core/util/jsonx
Package jsonx contains utilities for working with JSON encoded data.
Package jsonx contains utilities for working with JSON encoded data.
beam/core/util/protox
Package protox contains utilities for working with protobufs.
Package protox contains utilities for working with protobufs.
beam/core/util/reflectx
Package reflectx contains a set of reflection utilities and well-known types.
Package reflectx contains a set of reflection utilities and well-known types.
beam/core/util/symtab
Package symtab allows reading low-level symbol information from the symbol table.
Package symtab allows reading low-level symbol information from the symbol table.
beam/internal/errors
Package errors contains functionality for creating and wrapping errors with improved formatting compared to the standard Go error functionality.
Package errors contains functionality for creating and wrapping errors with improved formatting compared to the standard Go error functionality.
beam/io/avroio
Package avroio contains transforms for reading and writing avro files.
Package avroio contains transforms for reading and writing avro files.
beam/io/bigqueryio
Package bigqueryio provides transformations and utilities to interact with Google BigQuery.
Package bigqueryio provides transformations and utilities to interact with Google BigQuery.
beam/io/bigtableio
Package bigtableio provides transformations and utilities to interact with Google Bigtable.
Package bigtableio provides transformations and utilities to interact with Google Bigtable.
beam/io/databaseio
Package databaseio provides transformations and utilities to interact with generic database database/sql API.
Package databaseio provides transformations and utilities to interact with generic database database/sql API.
beam/io/datastoreio
Package datastoreio provides transformations and utilities to interact with Google Datastore.
Package datastoreio provides transformations and utilities to interact with Google Datastore.
beam/io/fhirio
Package fhirio provides an API for reading and writing resources to Google Cloud Healthcare Fhir stores.
Package fhirio provides an API for reading and writing resources to Google Cloud Healthcare Fhir stores.
beam/io/fileio
Package fileio provides transforms for matching and reading files.
Package fileio provides transforms for matching and reading files.
beam/io/filesystem
Package filesystem contains an extensible file system abstraction.
Package filesystem contains an extensible file system abstraction.
beam/io/filesystem/gcs
Package gcs contains a Google Cloud Storage (GCS) implementation of the Beam file system.
Package gcs contains a Google Cloud Storage (GCS) implementation of the Beam file system.
beam/io/filesystem/local
Package local contains a local file implementation of the Beam file system.
Package local contains a local file implementation of the Beam file system.
beam/io/filesystem/memfs
Package memfs contains a in-memory Beam filesystem.
Package memfs contains a in-memory Beam filesystem.
beam/io/filesystem/s3
Package s3 contains an AWS S3 implementation of the Beam file system.
Package s3 contains an AWS S3 implementation of the Beam file system.
beam/io/mongodbio
Package mongodbio contains transforms for reading from and writing to MongoDB.
Package mongodbio contains transforms for reading from and writing to MongoDB.
beam/io/natsio
Package natsio contains transforms for interacting with NATS.
Package natsio contains transforms for interacting with NATS.
beam/io/parquetio
Package parquetio contains transforms for reading and writing parquet files
Package parquetio contains transforms for reading and writing parquet files
beam/io/pubsubio
Package pubsubio provides access to Pub/Sub on Dataflow streaming.
Package pubsubio provides access to Pub/Sub on Dataflow streaming.
beam/io/rtrackers/offsetrange
Package offsetrange defines a restriction and restriction tracker for offset ranges.
Package offsetrange defines a restriction and restriction tracker for offset ranges.
beam/io/spannerio
Package spannerio provides an API for reading and writing resouces to Google Spanner datastores.
Package spannerio provides an API for reading and writing resouces to Google Spanner datastores.
beam/io/synthetic
Package synthetic contains transforms for creating synthetic pipelines.
Package synthetic contains transforms for creating synthetic pipelines.
beam/io/textio
Package textio contains transforms for reading and writing text files.
Package textio contains transforms for reading and writing text files.
beam/io/xlang/bigqueryio
Package bigqueryio contains cross-language functionality for using Google Cloud BigQuery (https://cloud.google.com/bigquery).
Package bigqueryio contains cross-language functionality for using Google Cloud BigQuery (https://cloud.google.com/bigquery).
beam/io/xlang/bigtableio
Package bigtableio contains cross-language functionality for using Google Cloud BigQuery (https://cloud.google.com/bigquery).
Package bigtableio contains cross-language functionality for using Google Cloud BigQuery (https://cloud.google.com/bigquery).
beam/io/xlang/debeziumio
Package debeziumio contains cross-language functionality for using Debezium (http://kafka.apache.org/).
Package debeziumio contains cross-language functionality for using Debezium (http://kafka.apache.org/).
beam/io/xlang/jdbcio
Package jdbcio contains cross-language functionality for reading and writing data to JDBC.
Package jdbcio contains cross-language functionality for reading and writing data to JDBC.
beam/io/xlang/kafkaio
Package kafkaio contains cross-language functionality for using Apache Kafka (http://kafka.apache.org/).
Package kafkaio contains cross-language functionality for using Apache Kafka (http://kafka.apache.org/).
beam/io/xlang/schemaio
Package schemaio contains utilities for constructing cross-language IO wrappers meant to interface with the Java SDK's Schema IOs.
Package schemaio contains utilities for constructing cross-language IO wrappers meant to interface with the Java SDK's Schema IOs.
beam/log
Package log contains a re-targetable context-aware logging system.
Package log contains a re-targetable context-aware logging system.
beam/model
Package model contains the portable Beam model contracts.
Package model contains the portable Beam model contracts.
beam/options/gcpopts
Package gcpopts contains shared options for Google Cloud Platform.
Package gcpopts contains shared options for Google Cloud Platform.
beam/options/jobopts
Package jobopts contains shared options for job submission.
Package jobopts contains shared options for job submission.
beam/options/resource
Package resource supports Beam resource hints to specify scoped hints or annotations to pipelines.
Package resource supports Beam resource hints to specify scoped hints or annotations to pipelines.
beam/provision
Package provision contains utilities for obtaining runtime provision, information -- such as pipeline options.
Package provision contains utilities for obtaining runtime provision, information -- such as pipeline options.
beam/register
Package register contains functions for registering and optimizing your DoFn.
Package register contains functions for registering and optimizing your DoFn.
beam/runners
Package runners defines the common "--runner" flag.
Package runners defines the common "--runner" flag.
beam/runners/dataflow
Package dataflow contains the Dataflow runner for submitting pipelines to Google Cloud Dataflow.
Package dataflow contains the Dataflow runner for submitting pipelines to Google Cloud Dataflow.
beam/runners/dataflow/dataflowlib
Package dataflowlib translates a Beam pipeline model to the Dataflow API job model, for submission to Google Cloud Dataflow.
Package dataflowlib translates a Beam pipeline model to the Dataflow API job model, for submission to Google Cloud Dataflow.
beam/runners/direct
Package direct contains the direct runner for running single-bundle pipelines in the current process.
Package direct contains the direct runner for running single-bundle pipelines in the current process.
beam/runners/dot
Package dot is a Beam runner that "runs" a pipeline by producing a DOT graph of the execution plan.
Package dot is a Beam runner that "runs" a pipeline by producing a DOT graph of the execution plan.
beam/runners/flink
Package flink contains the Flink runner.
Package flink contains the Flink runner.
beam/runners/prism
Package prism contains a local runner for running pipelines in the current process.
Package prism contains a local runner for running pipelines in the current process.
beam/runners/prism/internal
Package internal is where the less separable parts of the runner are put together in order to execute pipelines, and validate that beam features are implemented, and configured appropriately for the variant a pipeline is using.
Package internal is where the less separable parts of the runner are put together in order to execute pipelines, and validate that beam features are implemented, and configured appropriately for the variant a pipeline is using.
beam/runners/prism/internal/config
Package config defines and handles the parsing and provision of configurations for the runner.
Package config defines and handles the parsing and provision of configurations for the runner.
beam/runners/prism/internal/engine
Package engine handles the operational components of a runner, to track elements, watermarks, timers, triggers etc
Package engine handles the operational components of a runner, to track elements, watermarks, timers, triggers etc
beam/runners/prism/internal/jobservices
Package jobservices handles services necessary WRT handling jobs from SDKs.
Package jobservices handles services necessary WRT handling jobs from SDKs.
beam/runners/prism/internal/urns
Package urns handles extracting urns from all the protos.
Package urns handles extracting urns from all the protos.
beam/runners/prism/internal/web
Package web serves a web UI for Prism.
Package web serves a web UI for Prism.
beam/runners/prism/internal/worker
Package worker handles interactions with SDK side workers, representing the worker services, communicating with those services, and SDK environments.
Package worker handles interactions with SDK side workers, representing the worker services, communicating with those services, and SDK environments.
beam/runners/samza
Package samza contains the Samza runner.
Package samza contains the Samza runner.
beam/runners/spark
Package spark contains the Spark runner.
Package spark contains the Spark runner.
beam/runners/universal
Package universal contains a general-purpose runner that can submit jobs to any portable Beam runner.
Package universal contains a general-purpose runner that can submit jobs to any portable Beam runner.
beam/runners/universal/extworker
Package extworker provides an external worker service and related utilities.
Package extworker provides an external worker service and related utilities.
beam/runners/universal/runnerlib
Package runnerlib contains utilities for submitting Go pipelines to a Beam model runner.
Package runnerlib contains utilities for submitting Go pipelines to a Beam model runner.
beam/runners/vet
Package vet is a Beam runner that "runs" a pipeline by producing generated code to avoid symbol table lookups and reflection in pipeline execution.
Package vet is a Beam runner that "runs" a pipeline by producing generated code to avoid symbol table lookups and reflection in pipeline execution.
beam/runners/vet/testpipeline
Package testpipeline exports small test pipelines for testing the vet runner.
Package testpipeline exports small test pipelines for testing the vet runner.
beam/testing/passert
Package passert contains verification transformations for testing pipelines.
Package passert contains verification transformations for testing pipelines.
beam/testing/ptest
Package ptest contains utilities for pipeline unit testing.
Package ptest contains utilities for pipeline unit testing.
beam/testing/teststream
Package teststream contains code configuring the TestStream primitive for use in testing code that is meant to be run on streaming data sources.
Package teststream contains code configuring the TestStream primitive for use in testing code that is meant to be run on streaming data sources.
beam/transforms/filter
Package filter contains transformations for removing pipeline elements based on various conditions.
Package filter contains transformations for removing pipeline elements based on various conditions.
beam/transforms/periodic
Package periodic contains transformations for generating periodic sequences.
Package periodic contains transformations for generating periodic sequences.
beam/transforms/sql
Package sql contains SQL transform APIs, allowing SQL queries to be used in Beam Go pipelines.
Package sql contains SQL transform APIs, allowing SQL queries to be used in Beam Go pipelines.
beam/transforms/sql/sqlx
Package sqlx contains "internal" SQL transform interfaces that are needed by the SQL expansion providers.
Package sqlx contains "internal" SQL transform interfaces that are needed by the SQL expansion providers.
beam/transforms/stats
Package stats contains transforms for statistical processing.
Package stats contains transforms for statistical processing.
beam/transforms/top
Package top contains transformations for finding the smallest (or largest) N elements based on arbitrary orderings.
Package top contains transformations for finding the smallest (or largest) N elements based on arbitrary orderings.
beam/transforms/xlang
Package xlang contains cross-language transforms.
Package xlang contains cross-language transforms.
beam/transforms/xlang/dataframe
Package dataframe is a wrapper for DataframeTransform defined in Apache Beam Python SDK.
Package dataframe is a wrapper for DataframeTransform defined in Apache Beam Python SDK.
beam/transforms/xlang/inference
Package inference has the cross language implementation of RunInference API implemented in Python SDK.
Package inference has the cross language implementation of RunInference API implemented in Python SDK.
beam/transforms/xlang/python
Package python contains data structures required for python external transforms in a multilanguage pipeline.
Package python contains data structures required for python external transforms in a multilanguage pipeline.
beam/transforms/xlang/schema
Package schema has the cross language implementation for calling schema transforms in other language SDKs.
Package schema has the cross language implementation for calling schema transforms in other language SDKs.
beam/util/diagnostics
Package diagnostics is a beam internal package that contains code for writing and uploading diagnostic info (e.g.
Package diagnostics is a beam internal package that contains code for writing and uploading diagnostic info (e.g.
beam/util/errorx
Package errorx contains utilities for handling errors.
Package errorx contains utilities for handling errors.
beam/util/execx
Package execx contains wrappers and utilities for the exec package.
Package execx contains wrappers and utilities for the exec package.
beam/util/fsx
Package fsx contains utilities for working with filesystems.
Package fsx contains utilities for working with filesystems.
beam/util/gcsx
Package gcsx contains utilities for working with Google Cloud Storage (GCS).
Package gcsx contains utilities for working with Google Cloud Storage (GCS).
beam/util/grpcx
Package grpcx contains utilities for working with gRPC.
Package grpcx contains utilities for working with gRPC.
beam/util/harnessopts
Package harnessopts defines user-facing entrypoints into Beam hooks affecting the SDK harness.
Package harnessopts defines user-facing entrypoints into Beam hooks affecting the SDK harness.
beam/util/pubsubx
Package pubsubx contains utilities for working with Google PubSub.
Package pubsubx contains utilities for working with Google PubSub.
beam/util/shimx
Package shimx specifies the templates for generating type assertion shims for Apache Beam Go SDK pipelines.
Package shimx specifies the templates for generating type assertion shims for Apache Beam Go SDK pipelines.
beam/util/starcgenx
Package starcgenx is a Static Analysis Type Assertion shim and Registration Code Generator which provides an extractor to extract types from a package, in order to generate approprate shimsr a package so code can be generated for it.
Package starcgenx is a Static Analysis Type Assertion shim and Registration Code Generator which provides an extractor to extract types from a package, in order to generate approprate shimsr a package so code can be generated for it.
beam/util/structx
Package structx provides utilities for working with structs.
Package structx provides utilities for working with structs.
beam/util/syscallx
Package syscallx provides system call utilities that attempt to hide platform differences.
Package syscallx provides system call utilities that attempt to hide platform differences.
beam/x/beamx
Package beamx is a convenience package for beam.
Package beamx is a convenience package for beam.
beam/x/debug
Package debug contains pipeline components that may help in debugging pipeline issues.
Package debug contains pipeline components that may help in debugging pipeline issues.
beam/x/hooks/perf
Package perf is to add performance measuring hooks to a runner, such as cpu, heap, or trace profiles.
Package perf is to add performance measuring hooks to a runner, such as cpu, heap, or trace profiles.
test
integration
Package integration provides functionality that needs to be shared between all integration tests.
Package integration provides functionality that needs to be shared between all integration tests.
integration/internal/containers
Package containers contains utilities for running test containers in integration tests.
Package containers contains utilities for running test containers in integration tests.
integration/internal/jars
Package jars contains functionality for running jars for integration tests.
Package jars contains functionality for running jars for integration tests.
integration/internal/ports
Package ports contains utilities for handling ports needed for integration tests.
Package ports contains utilities for handling ports needed for integration tests.
integration/io/xlang/bigquery
Package bigquery contains integration tests for cross-language BigQuery IO transforms.
Package bigquery contains integration tests for cross-language BigQuery IO transforms.
integration/io/xlang/bigtable
Package bigtable contains integration tests for cross-language Bigtable IO transforms.
Package bigtable contains integration tests for cross-language Bigtable IO transforms.
integration/io/xlang/debezium
Package debezium contains integration tests for cross-language Debezium IO transforms.
Package debezium contains integration tests for cross-language Debezium IO transforms.
integration/io/xlang/jdbc
Package jdbc contains integration tests for cross-language JDBC IO transforms.
Package jdbc contains integration tests for cross-language JDBC IO transforms.
integration/io/xlang/kafka
Package kafka contains integration tests for cross-language Kafka IO transforms.
Package kafka contains integration tests for cross-language Kafka IO transforms.
integration/primitives
Package primitives contains integration tests for primitives in beam.
Package primitives contains integration tests for primitives in beam.
integration/synthetic
Package synthetic contains pipelines for testing synthetic steps and sources.
Package synthetic contains pipelines for testing synthetic steps and sources.
integration/wordcount
Package wordcount contains transforms for wordcount.
Package wordcount contains transforms for wordcount.
integration/xlang
Package xlang contains integration tests for cross-language transforms.
Package xlang contains integration tests for cross-language transforms.
regression
Package regression contains pipeline regression tests.
Package regression contains pipeline regression tests.
regression/coders/fromyaml
fromyaml generates a resource file from the standard_coders.yaml file for use in these coder regression tests.
fromyaml generates a resource file from the standard_coders.yaml file for use in these coder regression tests.

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