resource

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Version: v0.8.8 Latest Latest
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Published: Mar 2, 2017 License: MPL-2.0 Imports: 23 Imported by: 0

Documentation

Index

Constants

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const TestEnvVar = "TF_ACC"
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const UniqueIdPrefix = `terraform-`

Variables

This section is empty.

Functions

func PrefixedUniqueId added in v0.6.2

func PrefixedUniqueId(prefix string) string

Helper for a resource to generate a unique identifier w/ given prefix

After the prefix, the ID consists of an incrementing 26 digit value (to match previous timestamp output).

func Retry added in v0.3.0

func Retry(timeout time.Duration, f RetryFunc) error

Retry is a basic wrapper around StateChangeConf that will just retry a function until it no longer returns an error.

func Test

func Test(t TestT, c TestCase)

Test performs an acceptance test on a resource.

Tests are not run unless an environmental variable "TF_ACC" is set to some non-empty value. This is to avoid test cases surprising a user by creating real resources.

Tests will fail unless the verbose flag (`go test -v`, or explicitly the "-test.v" flag) is set. Because some acceptance tests take quite long, we require the verbose flag so users are able to see progress output.

func UniqueId added in v0.5.0

func UniqueId() string

Helper for a resource to generate a unique identifier w/ default prefix

func UnitTest added in v0.6.14

func UnitTest(t TestT, c TestCase)

UnitTest is a helper to force the acceptance testing harness to run in the normal unit test suite. This should only be used for resource that don't have any external dependencies.

Types

type CreateFunc

type CreateFunc func(
	*terraform.InstanceState,
	*terraform.InstanceDiff,
	interface{}) (*terraform.InstanceState, error)

CreateFunc is a function that creates a resource that didn't previously exist.

type DestroyFunc

type DestroyFunc func(
	*terraform.InstanceState,
	interface{}) error

DestroyFunc is a function that destroys a resource that previously exists using the state.

type DiffFunc

type DiffFunc func(
	*terraform.InstanceState,
	*terraform.ResourceConfig,
	interface{}) (*terraform.InstanceDiff, error)

DiffFunc is a function that performs a diff of a resource.

type ImportStateCheckFunc added in v0.7.0

type ImportStateCheckFunc func([]*terraform.InstanceState) error

ImportStateCheckFunc is the check function for ImportState tests

type Map

type Map struct {
	Mapping map[string]Resource
}

Map is a map of resources that are supported, and provides helpers for more easily implementing a ResourceProvider.

func (*Map) Apply

func (m *Map) Apply(
	info *terraform.InstanceInfo,
	s *terraform.InstanceState,
	d *terraform.InstanceDiff,
	meta interface{}) (*terraform.InstanceState, error)

Apply performs a create or update depending on the diff, and calls the proper function on the matching Resource.

func (*Map) Diff

func (m *Map) Diff(
	info *terraform.InstanceInfo,
	s *terraform.InstanceState,
	c *terraform.ResourceConfig,
	meta interface{}) (*terraform.InstanceDiff, error)

Diff performs a diff on the proper resource type.

func (*Map) Refresh

func (m *Map) Refresh(
	info *terraform.InstanceInfo,
	s *terraform.InstanceState,
	meta interface{}) (*terraform.InstanceState, error)

Refresh performs a Refresh on the proper resource type.

Refresh on the Resource won't be called if the state represents a non-created resource (ID is blank).

An error is returned if the resource isn't registered.

func (*Map) Resources

func (m *Map) Resources() []terraform.ResourceType

Resources returns all the resources that are supported by this resource map and can be used to satisfy the Resources method of a ResourceProvider.

func (*Map) Validate

func (m *Map) Validate(
	t string, c *terraform.ResourceConfig) ([]string, []error)

type NotFoundError added in v0.6.14

type NotFoundError struct {
	LastError    error
	LastRequest  interface{}
	LastResponse interface{}
	Message      string
	Retries      int
}

func (*NotFoundError) Error added in v0.6.14

func (e *NotFoundError) Error() string

type RefreshFunc

type RefreshFunc func(
	*terraform.InstanceState,
	interface{}) (*terraform.InstanceState, error)

RefreshFunc is a function that performs a refresh of a specific type of resource.

type Resource

type Resource struct {
	ConfigValidator *config.Validator
	Create          CreateFunc
	Destroy         DestroyFunc
	Diff            DiffFunc
	Refresh         RefreshFunc
	Update          UpdateFunc
}

type RetryError added in v0.3.1

type RetryError struct {
	Err       error
	Retryable bool
}

RetryError is the required return type of RetryFunc. It forces client code to choose whether or not a given error is retryable.

func NonRetryableError added in v0.6.13

func NonRetryableError(err error) *RetryError

NonRetryableError is a helper to create a RetryError that's _not)_ retryable from a given error.

func RetryableError added in v0.6.13

func RetryableError(err error) *RetryError

RetryableError is a helper to create a RetryError that's retryable from a given error.

type RetryFunc added in v0.3.0

type RetryFunc func() *RetryError

RetryFunc is the function retried until it succeeds.

type StateChangeConf

type StateChangeConf struct {
	Delay          time.Duration    // Wait this time before starting checks
	Pending        []string         // States that are "allowed" and will continue trying
	Refresh        StateRefreshFunc // Refreshes the current state
	Target         []string         // Target state
	Timeout        time.Duration    // The amount of time to wait before timeout
	MinTimeout     time.Duration    // Smallest time to wait before refreshes
	PollInterval   time.Duration    // Override MinTimeout/backoff and only poll this often
	NotFoundChecks int              // Number of times to allow not found

	// This is to work around inconsistent APIs
	ContinuousTargetOccurence int // Number of times the Target state has to occur continuously
}

StateChangeConf is the configuration struct used for `WaitForState`.

func (*StateChangeConf) WaitForState

func (conf *StateChangeConf) WaitForState() (interface{}, error)

WaitForState watches an object and waits for it to achieve the state specified in the configuration using the specified Refresh() func, waiting the number of seconds specified in the timeout configuration.

If the Refresh function returns a error, exit immediately with that error.

If the Refresh function returns a state other than the Target state or one listed in Pending, return immediately with an error.

If the Timeout is exceeded before reaching the Target state, return an error.

Otherwise, result the result of the first call to the Refresh function to reach the target state.

type StateRefreshFunc

type StateRefreshFunc func() (result interface{}, state string, err error)

StateRefreshFunc is a function type used for StateChangeConf that is responsible for refreshing the item being watched for a state change.

It returns three results. `result` is any object that will be returned as the final object after waiting for state change. This allows you to return the final updated object, for example an EC2 instance after refreshing it.

`state` is the latest state of that object. And `err` is any error that may have happened while refreshing the state.

type TestCase

type TestCase struct {
	// IsUnitTest allows a test to run regardless of the TF_ACC
	// environment variable. This should be used with care - only for
	// fast tests on local resources (e.g. remote state with a local
	// backend) but can be used to increase confidence in correct
	// operation of Terraform without waiting for a full acctest run.
	IsUnitTest bool

	// PreCheck, if non-nil, will be called before any test steps are
	// executed. It will only be executed in the case that the steps
	// would run, so it can be used for some validation before running
	// acceptance tests, such as verifying that keys are setup.
	PreCheck func()

	// Providers is the ResourceProvider that will be under test.
	//
	// Alternately, ProviderFactories can be specified for the providers
	// that are valid. This takes priority over Providers.
	//
	// The end effect of each is the same: specifying the providers that
	// are used within the tests.
	Providers         map[string]terraform.ResourceProvider
	ProviderFactories map[string]terraform.ResourceProviderFactory

	// PreventPostDestroyRefresh can be set to true for cases where data sources
	// are tested alongside real resources
	PreventPostDestroyRefresh bool

	// CheckDestroy is called after the resource is finally destroyed
	// to allow the tester to test that the resource is truly gone.
	CheckDestroy TestCheckFunc

	// Steps are the apply sequences done within the context of the
	// same state. Each step can have its own check to verify correctness.
	Steps []TestStep

	// The settings below control the "ID-only refresh test." This is
	// an enabled-by-default test that tests that a refresh can be
	// refreshed with only an ID to result in the same attributes.
	// This validates completeness of Refresh.
	//
	// IDRefreshName is the name of the resource to check. This will
	// default to the first non-nil primary resource in the state.
	//
	// IDRefreshIgnore is a list of configuration keys that will be ignored.
	IDRefreshName   string
	IDRefreshIgnore []string
}

TestCase is a single acceptance test case used to test the apply/destroy lifecycle of a resource in a specific configuration.

When the destroy plan is executed, the config from the last TestStep is used to plan it.

type TestCheckFunc

type TestCheckFunc func(*terraform.State) error

TestCheckFunc is the callback type used with acceptance tests to check the state of a resource. The state passed in is the latest state known, or in the case of being after a destroy, it is the last known state when it was created.

func ComposeAggregateTestCheckFunc added in v0.7.1

func ComposeAggregateTestCheckFunc(fs ...TestCheckFunc) TestCheckFunc

ComposeAggregateTestCheckFunc lets you compose multiple TestCheckFuncs into a single TestCheckFunc.

As a user testing their provider, this lets you decompose your checks into smaller pieces more easily.

Unlike ComposeTestCheckFunc, ComposeAggergateTestCheckFunc runs _all_ of the TestCheckFuncs and aggregates failures.

func ComposeTestCheckFunc

func ComposeTestCheckFunc(fs ...TestCheckFunc) TestCheckFunc

ComposeTestCheckFunc lets you compose multiple TestCheckFuncs into a single TestCheckFunc.

As a user testing their provider, this lets you decompose your checks into smaller pieces more easily.

func TestCheckNoResourceAttr added in v0.8.5

func TestCheckNoResourceAttr(name, key string) TestCheckFunc

TestCheckNoResourceAttr is a TestCheckFunc which ensures that NO value exists in state for the given name/key combination.

func TestCheckOutput added in v0.6.14

func TestCheckOutput(name, value string) TestCheckFunc

TestCheckOutput checks an output in the Terraform configuration

func TestCheckResourceAttr

func TestCheckResourceAttr(name, key, value string) TestCheckFunc

TestCheckResourceAttr is a TestCheckFunc which validates the value in state for the given name/key combination.

func TestCheckResourceAttrPair added in v0.8.7

func TestCheckResourceAttrPair(nameFirst, keyFirst, nameSecond, keySecond string) TestCheckFunc

TestCheckResourceAttrPair is a TestCheckFunc which validates that the values in state for a pair of name/key combinations are equal.

func TestCheckResourceAttrPtr added in v0.3.7

func TestCheckResourceAttrPtr(name string, key string, value *string) TestCheckFunc

TestCheckResourceAttrPtr is like TestCheckResourceAttr except the value is a pointer so that it can be updated while the test is running. It will only be dereferenced at the point this step is run.

func TestCheckResourceAttrSet added in v0.7.1

func TestCheckResourceAttrSet(name, key string) TestCheckFunc

TestCheckResourceAttrSet is a TestCheckFunc which ensures a value exists in state for the given name/key combination. It is useful when testing that computed values were set, when it is not possible to know ahead of time what the values will be.

func TestMatchOutput added in v0.7.0

func TestMatchOutput(name string, r *regexp.Regexp) TestCheckFunc

func TestMatchResourceAttr added in v0.6.1

func TestMatchResourceAttr(name, key string, r *regexp.Regexp) TestCheckFunc

TestMatchResourceAttr is a TestCheckFunc which checks that the value in state for the given name/key combination matches the given regex.

type TestStep

type TestStep struct {
	// ResourceName should be set to the name of the resource
	// that is being tested. Example: "aws_instance.foo". Various test
	// modes use this to auto-detect state information.
	//
	// This is only required if the test mode settings below say it is
	// for the mode you're using.
	ResourceName string

	// PreConfig is called before the Config is applied to perform any per-step
	// setup that needs to happen. This is called regardless of "test mode"
	// below.
	PreConfig func()

	// Config a string of the configuration to give to Terraform. If this
	// is set, then the TestCase will execute this step with the same logic
	// as a `terraform apply`.
	Config string

	// Check is called after the Config is applied. Use this step to
	// make your own API calls to check the status of things, and to
	// inspect the format of the ResourceState itself.
	//
	// If an error is returned, the test will fail. In this case, a
	// destroy plan will still be attempted.
	//
	// If this is nil, no check is done on this step.
	Check TestCheckFunc

	// Destroy will create a destroy plan if set to true.
	Destroy bool

	// ExpectNonEmptyPlan can be set to true for specific types of tests that are
	// looking to verify that a diff occurs
	ExpectNonEmptyPlan bool

	// ExpectError allows the construction of test cases that we expect to fail
	// with an error. The specified regexp must match against the error for the
	// test to pass.
	ExpectError *regexp.Regexp

	// PreventPostDestroyRefresh can be set to true for cases where data sources
	// are tested alongside real resources
	PreventPostDestroyRefresh bool

	// ImportState, if true, will test the functionality of ImportState
	// by importing the resource with ResourceName (must be set) and the
	// ID of that resource.
	ImportState bool

	// ImportStateId is the ID to perform an ImportState operation with.
	// This is optional. If it isn't set, then the resource ID is automatically
	// determined by inspecting the state for ResourceName's ID.
	ImportStateId string

	// ImportStateCheck checks the results of ImportState. It should be
	// used to verify that the resulting value of ImportState has the
	// proper resources, IDs, and attributes.
	ImportStateCheck ImportStateCheckFunc

	// ImportStateVerify, if true, will also check that the state values
	// that are finally put into the state after import match for all the
	// IDs returned by the Import.
	//
	// ImportStateVerifyIgnore are fields that should not be verified to
	// be equal. These can be set to ephemeral fields or fields that can't
	// be refreshed and don't matter.
	ImportStateVerify       bool
	ImportStateVerifyIgnore []string
}

TestStep is a single apply sequence of a test, done within the context of a state.

Multiple TestSteps can be sequenced in a Test to allow testing potentially complex update logic. In general, simply create/destroy tests will only need one step.

type TestT

type TestT interface {
	Error(args ...interface{})
	Fatal(args ...interface{})
	Skip(args ...interface{})
}

TestT is the interface used to handle the test lifecycle of a test.

Users should just use a *testing.T object, which implements this.

type TimeoutError added in v0.7.0

type TimeoutError struct {
	LastError     error
	LastState     string
	Timeout       time.Duration
	ExpectedState []string
}

TimeoutError is returned when WaitForState times out

func (*TimeoutError) Error added in v0.7.0

func (e *TimeoutError) Error() string

type UnexpectedStateError added in v0.7.0

type UnexpectedStateError struct {
	LastError     error
	State         string
	ExpectedState []string
}

UnexpectedStateError is returned when Refresh returns a state that's neither in Target nor Pending

func (*UnexpectedStateError) Error added in v0.7.0

func (e *UnexpectedStateError) Error() string

type UpdateFunc

type UpdateFunc func(
	*terraform.InstanceState,
	*terraform.InstanceDiff,
	interface{}) (*terraform.InstanceState, error)

UpdateFunc is a function that is called to update a resource that previously existed. The difference between this and CreateFunc is that the diff is guaranteed to only contain attributes that don't require a new resource.

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