opentofu

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Published: May 8, 2024 License: MPL-2.0

README

OpenTofu

OpenTofu is an OSS tool for building, changing, and versioning infrastructure safely and efficiently. OpenTofu can manage existing and popular service providers as well as custom in-house solutions.

The key features of OpenTofu are:

  • Infrastructure as Code: Infrastructure is described using a high-level configuration syntax. This allows a blueprint of your datacenter to be versioned and treated as you would any other code. Additionally, infrastructure can be shared and re-used.

  • Execution Plans: OpenTofu has a "planning" step where it generates an execution plan. The execution plan shows what OpenTofu will do when you call apply. This lets you avoid any surprises when OpenTofu manipulates infrastructure.

  • Resource Graph: OpenTofu builds a graph of all your resources, and parallelizes the creation and modification of any non-dependent resources. Because of this, OpenTofu builds infrastructure as efficiently as possible, and operators get insight into dependencies in their infrastructure.

  • Change Automation: Complex changesets can be applied to your infrastructure with minimal human interaction. With the previously mentioned execution plan and resource graph, you know exactly what OpenTofu will change and in what order, avoiding many possible human errors.

Getting help and contributing

[!TIP] For more OpenTofu events, subscribe to the OpenTofu Events Calendar!

Reporting security vulnerabilities

If you've found a vulnerability or a potential vulnerability in OpenTofu please follow Security Policy. We'll send a confirmation email to acknowledge your report, and we'll send an additional email when we've identified the issue positively or negatively.

If you believe you have found any possible copyright or intellectual property issues, please contact liaison@opentofu.org. We'll send a confirmation email to acknowledge your report.

License

Mozilla Public License v2.0

Directories

Path Synopsis
cmd
internal
addrs
Package addrs contains types that represent "addresses", which are references to specific objects within a OpenTofu configuration or state.
Package addrs contains types that represent "addresses", which are references to specific objects within a OpenTofu configuration or state.
backend
Package backend provides interfaces that the CLI uses to interact with OpenTofu.
Package backend provides interfaces that the CLI uses to interact with OpenTofu.
backend/init
Package init contains the list of backends that can be initialized and basic helper functions for initializing those backends.
Package init contains the list of backends that can be initialized and basic helper functions for initializing those backends.
backend/remote-state/gcs
Package gcs implements remote storage of state on Google Cloud Storage (GCS).
Package gcs implements remote storage of state on Google Cloud Storage (GCS).
checks
Package checks contains the models for representing various kinds of declarative condition checks that can be defined in a OpenTofu module and then evaluated and reported by OpenTofu Core during plan and apply operations.
Package checks contains the models for representing various kinds of declarative condition checks that can be defined in a OpenTofu module and then evaluated and reported by OpenTofu Core during plan and apply operations.
cloudplugin/mock_cloudproto1
Package mock_cloudproto1 is a generated GoMock package.
Package mock_cloudproto1 is a generated GoMock package.
command/cliconfig
Package cliconfig has the types representing and the logic to load CLI-level configuration settings.
Package cliconfig has the types representing and the logic to load CLI-level configuration settings.
command/clistate
Package state exposes common helpers for working with state from the CLI.
Package state exposes common helpers for working with state from the CLI.
command/e2etest
Package e2etest contains a set of tests that run against a real OpenTofu binary, compiled on the fly at the start of the test run.
Package e2etest contains a set of tests that run against a real OpenTofu binary, compiled on the fly at the start of the test run.
command/format
Package format contains helpers for formatting various OpenTofu structures for human-readabout output.
Package format contains helpers for formatting various OpenTofu structures for human-readabout output.
command/jsonchecks
Package jsonchecks implements the common JSON representation of check results/statuses that we use across both the JSON plan and JSON state representations.
Package jsonchecks implements the common JSON representation of check results/statuses that we use across both the JSON plan and JSON state representations.
command/jsonconfig
Package jsonconfig implements methods for outputting a configuration snapshot in machine-readable json format
Package jsonconfig implements methods for outputting a configuration snapshot in machine-readable json format
command/jsonformat/computed
Package computed contains types that represent the computed diffs for OpenTofu blocks, attributes, and outputs.
Package computed contains types that represent the computed diffs for OpenTofu blocks, attributes, and outputs.
command/jsonformat/structured
Package structured contains the structured representation of the JSON changes returned by the jsonplan package.
Package structured contains the structured representation of the JSON changes returned by the jsonplan package.
command/jsonplan
Package jsonplan implements methods for outputting a plan in a machine-readable json format
Package jsonplan implements methods for outputting a plan in a machine-readable json format
command/jsonprovider
Package jsonprovider contains types and functions to marshal OpenTofu provider schemas into a json formatted output.
Package jsonprovider contains types and functions to marshal OpenTofu provider schemas into a json formatted output.
command/jsonstate
Package jsonstate implements methods for outputting a state in a machine-readable json format
Package jsonstate implements methods for outputting a state in a machine-readable json format
command/workdir
Package workdir models the various local artifacts and state we keep inside a OpenTofu "working directory".
Package workdir models the various local artifacts and state we keep inside a OpenTofu "working directory".
configs
Package configs contains types that represent OpenTofu configurations and the different elements thereof.
Package configs contains types that represent OpenTofu configurations and the different elements thereof.
configs/configload
Package configload knows how to install modules into the .terraform/modules directory and to load modules from those installed locations.
Package configload knows how to install modules into the .terraform/modules directory and to load modules from those installed locations.
configs/configschema
Package configschema contains types for describing the expected structure of a configuration block whose shape is not known until runtime.
Package configschema contains types for describing the expected structure of a configuration block whose shape is not known until runtime.
dag
depsfile
Package depsfile contains the logic for reading and writing OpenTofu's dependency lock and development override configuration files.
Package depsfile contains the logic for reading and writing OpenTofu's dependency lock and development override configuration files.
e2e
encryption/keyprovider/pbkdf2
Package pbkdf2 contains a key provider that takes a passphrase and emits a PBKDF2 hash of the configured length.
Package pbkdf2 contains a key provider that takes a passphrase and emits a PBKDF2 hash of the configured length.
encryption/keyprovider/static
Package static contains a key provider that emits a static key.
Package static contains a key provider that emits a static key.
experiments
Package experiments contains the models and logic for opt-in experiments that can be activated for a particular OpenTofu module.
Package experiments contains the models and logic for opt-in experiments that can be activated for a particular OpenTofu module.
genconfig
Package genconfig implements config generation from provided state values.
Package genconfig implements config generation from provided state values.
getmodules
Package getmodules contains the low-level functionality for fetching remote module packages.
Package getmodules contains the low-level functionality for fetching remote module packages.
getproviders
Package getproviders is the lowest-level provider automatic installation functionality.
Package getproviders is the lowest-level provider automatic installation functionality.
gohcl
Package gohcl allows decoding HCL configurations into Go data structures.
Package gohcl allows decoding HCL configurations into Go data structures.
initwd
Package initwd contains various helper functions used by the "tofu init" command to initialize a working directory.
Package initwd contains various helper functions used by the "tofu init" command to initialize a working directory.
ipaddr
Package ipaddr is a fork of a subset of the Go standard "net" package which retains parsing behaviors from Go 1.16 or earlier.
Package ipaddr is a fork of a subset of the Go standard "net" package which retains parsing behaviors from Go 1.16 or earlier.
lang
Package lang deals with the runtime aspects of OpenTofu's configuration language, with concerns such as expression evaluation.
Package lang deals with the runtime aspects of OpenTofu's configuration language, with concerns such as expression evaluation.
lang/blocktoattr
Package blocktoattr includes some helper functions that can perform preprocessing on a HCL body where a configschema.Block schema is available in order to allow list and set attributes defined in the schema to be optionally written by the user as block syntax.
Package blocktoattr includes some helper functions that can perform preprocessing on a HCL body where a configschema.Block schema is available in order to allow list and set attributes defined in the schema to be optionally written by the user as block syntax.
lang/globalref
Package globalref is home to some analysis algorithms that aim to answer questions about references between objects and object attributes across an entire configuration.
Package globalref is home to some analysis algorithms that aim to answer questions about references between objects and object attributes across an entire configuration.
lang/types
Package types contains non-standard cty types used only within OpenTofu.
Package types contains non-standard cty types used only within OpenTofu.
legacy/helper/acctest
Package acctest contains for OpenTofu Acceptance Tests
Package acctest contains for OpenTofu Acceptance Tests
legacy/helper/schema
Package schema is a legacy package that used to represent the SDK, which is now its own library external to OpenTofu Core https://github.com/hashicorp/terraform-plugin-sdk Some of it is still used by OpenTofu's remote state backends, but this entire package should be removed in the future.
Package schema is a legacy package that used to represent the SDK, which is now its own library external to OpenTofu Core https://github.com/hashicorp/terraform-plugin-sdk Some of it is still used by OpenTofu's remote state backends, but this entire package should be removed in the future.
modsdir
Package modsdir is an internal package containing the model types used to represent the manifest of modules in a local modules cache directory.
Package modsdir is an internal package containing the model types used to represent the manifest of modules in a local modules cache directory.
moduledeps
Package moduledeps contains types that can be used to describe the providers required for all of the modules in a module tree.
Package moduledeps contains types that can be used to describe the providers required for all of the modules in a module tree.
plans
Package plans contains the types that are used to represent OpenTofu plans.
Package plans contains the types that are used to represent OpenTofu plans.
plans/internal/planproto
Package planproto is home to the Go stubs generated from the tfplan protobuf schema.
Package planproto is home to the Go stubs generated from the tfplan protobuf schema.
plans/objchange
Package objchange deals with the business logic of taking a prior state value and a config value and producing a proposed new merged value, along with other related rules in this domain.
Package objchange deals with the business logic of taking a prior state value and a config value and producing a proposed new merged value, along with other related rules in this domain.
plans/planfile
Package planfile deals with the file format used to serialize plans to disk and then deserialize them back into memory later.
Package planfile deals with the file format used to serialize plans to disk and then deserialize them back into memory later.
plugin/mock_proto
Package mock_tfplugin5 is a generated GoMock package.
Package mock_tfplugin5 is a generated GoMock package.
plugin6/mock_proto
Package mock_tfplugin6 is a generated GoMock package.
Package mock_tfplugin6 is a generated GoMock package.
provider-simple
simple provider a minimal provider implementation for testing
simple provider a minimal provider implementation for testing
provider-simple-v6
simple provider a minimal provider implementation for testing
simple provider a minimal provider implementation for testing
providercache
Package providercache contains the logic for auto-installing providers from packages obtained elsewhere, and for managing the local directories that serve as global or single-configuration caches of those auto-installed providers.
Package providercache contains the logic for auto-installing providers from packages obtained elsewhere, and for managing the local directories that serve as global or single-configuration caches of those auto-installed providers.
providers
Package providers contains the interface and primary types required to implement a OpenTofu resource provider.
Package providers contains the interface and primary types required to implement a OpenTofu resource provider.
provisioners
Package provisioners contains the interface and primary types to implement a OpenTofu resource provisioner.
Package provisioners contains the interface and primary types to implement a OpenTofu resource provisioner.
registry/regsrc
Package regsrc provides helpers for working with source strings that identify resources within a OpenTofu registry.
Package regsrc provides helpers for working with source strings that identify resources within a OpenTofu registry.
repl
Package repl provides the structs and functions necessary to run REPL for OpenTofu.
Package repl provides the structs and functions necessary to run REPL for OpenTofu.
replacefile
Package replacefile is a small helper package focused directly at the problem of atomically "renaming" one file over another one.
Package replacefile is a small helper package focused directly at the problem of atomically "renaming" one file over another one.
states
Package states contains the types that are used to represent OpenTofu states.
Package states contains the types that are used to represent OpenTofu states.
states/statefile
Package statefile deals with the file format used to serialize states for persistent storage and then deserialize them into memory again later.
Package statefile deals with the file format used to serialize states for persistent storage and then deserialize them into memory again later.
states/statemgr
Package statemgr defines the interfaces and some supporting functionality for "state managers", which are components responsible for writing state to some persistent storage and then later retrieving it.
Package statemgr defines the interfaces and some supporting functionality for "state managers", which are components responsible for writing state to some persistent storage and then later retrieving it.
terminal
Package terminal encapsulates some platform-specific logic for detecting if we're running in a terminal and, if so, properly configuring that terminal to meet the assumptions that the rest of OpenTofu makes.
Package terminal encapsulates some platform-specific logic for detecting if we're running in a terminal and, if so, properly configuring that terminal to meet the assumptions that the rest of OpenTofu makes.
tfdiags
Package tfdiags is a utility package for representing errors and warnings in a manner that allows us to produce good messages for the user.
Package tfdiags is a utility package for representing errors and warnings in a manner that allows us to produce good messages for the user.
tools
protobuf-compile
protobuf-compile is a helper tool for running protoc against all of the .proto files in this repository using specific versions of protoc and protoc-gen-go, to ensure consistent results across all development environments.
protobuf-compile is a helper tool for running protoc against all of the .proto files in this repository using specific versions of protoc and protoc-gen-go, to ensure consistent results across all development environments.
The version package provides a location to set the release versions for all packages to consume, without creating import cycles.
The version package provides a location to set the release versions for all packages to consume, without creating import cycles.

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