cluster

package
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 Go to latest Published: Apr 9, 2021 License: MIT Imports: 20 Imported by: 0

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Types

type ClusterClient 

type ClusterClient interface {
	// Apply applies all of the configs at the given path.
	Apply(ctx context.Context, paths []string, serverSide bool) ([]byte, error)

	// ApplyStructured applies all of the configs at the given path and returns structured,
	// as opposed to raw, outputs
	ApplyStructured(ctx context.Context, paths []string, serverSide bool) ([]apply.Result, error)

	// Diff gets the diffs between the configs at the given path and the actual state of resources
	// in the cluster.
	Diff(ctx context.Context, paths []string, serverSide bool) ([]byte, error)

	// Diff gets the diffs between the configs at the given path and the actual state of resources
	// in the cluster.
	DiffStructured(ctx context.Context, paths []string, serverSide bool) ([]diff.Result, error)

	// Summary returns a summary of all workloads in the cluster.
	Summary(ctx context.Context) (string, error)

	// GetStoreValue gets the value of the given key.
	GetStoreValue(ctx context.Context, key string) (string, error)

	// SetStoreValue sets the given key/value pair in the cluster.
	SetStoreValue(ctx context.Context, key string, value string) error

	// Config returns the config for this cluster.
	Config() *config.ClusterConfig

	// GetNamespaceUID returns the kubernetes identifier for a given namespace in this cluster.
	GetNamespaceUID(ctx context.Context, namespace string) (string, error)

	// Close cleans up this client.
	Close() error
}

ClusterClient is an interface that interacts with the API of a single Kubernetes cluster.

func NewFakeClusterClient 

func NewFakeClusterClient(
	ctx context.Context,
	config *ClusterClientConfig,
) (ClusterClient, error)

NewFakeClusterClient returns a FakeClusterClient that works without errors.

func NewFakeClusterClientError 

func NewFakeClusterClientError(
	ctx context.Context,
	config *ClusterClientConfig,
) (ClusterClient, error)

NewFakeClusterClientError returns a FakeClusterClient that simulates an error when running kubectl.

func NewKubeClusterClient 

func NewKubeClusterClient(
	ctx context.Context,
	config *ClusterClientConfig,
) (ClusterClient, error)

NewKubeClusterClient creates a new ClusterClient instance for a real Kubernetes cluster.

type ClusterClientConfig 

type ClusterClientConfig struct {
	// CheckApplyConsistency indicates whether we should check whether an apply is done with
	// the same SHA as the last diff in the cluster.
	CheckApplyConsistency bool

	// ClusterConfig is the config for the cluster that we are communicating with.
	ClusterConfig *config.ClusterConfig

	// Debug indicates whether commands should be run with debug-level logging.
	Debug bool

	// KeepConfigs indicates whether kube client should keep around intermediate
	// yaml manifests. These are useful for debugging when there are apply errors.
	KeepConfigs bool

	// HeadSHA is the SHA of the current branch. Used for consistency checking, can be omitted
	// if that option is false.
	HeadSHA string

	// UseColors indicates whether output should include colors. Currently only applies to diff
	// operations.
	UseColors bool

	// UseLocks indicates whether a cluster-specific lock should be acquired before any diff
	// and expand operations.
	UseLocks bool

	// SpinnerObj is a pointer to a Spinner instance. If unset, no spinner is used. Currently
	// only applies to diff operations.
	SpinnerObj *spinner.Spinner

	// StreamingOutput indicates whether results should be streamed out to stdout and stderr.
	// Currently only applies to apply operations.
	StreamingOutput bool
}

ClusterClientConfig stores the configuration necessary to create a ClusterClient.

type ClusterClientGenerator 

type ClusterClientGenerator func(
	ctx context.Context,
	config *ClusterClientConfig,
) (ClusterClient, error)

ClusterClientGenerator generates a ClusterClient from a config.

type FakeClusterClient 

type FakeClusterClient struct {
	// contains filtered or unexported fields
}

FakeClusterClient is a fake implementation of a ClusterClient. For testing purposes only.

func (*FakeClusterClient) Apply 

func (cc *FakeClusterClient) Apply(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]byte, error)

Apply runs a fake apply using the configs in the argument path.

func (*FakeClusterClient) ApplyStructured 

func (cc *FakeClusterClient) ApplyStructured(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]apply.Result, error)

ApplyStructured runs a fake structured apply using the configs in the argument path.

func (*FakeClusterClient) Close 

func (cc *FakeClusterClient) Close() error

Close closes the client.

func (*FakeClusterClient) Config 

func (cc *FakeClusterClient) Config() *config.ClusterConfig

Config returns this client's cluster config.

func (*FakeClusterClient) Diff 

func (cc *FakeClusterClient) Diff(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]byte, error)

Diff runs a fake diff using the configs in the argument path.

func (*FakeClusterClient) DiffStructured 

func (cc *FakeClusterClient) DiffStructured(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]diff.Result, error)

Diff runs a fake diff using the configs in the argument path.

func (*FakeClusterClient) GetNamespaceUID 

func (cc *FakeClusterClient) GetNamespaceUID(
	ctx context.Context,
	namespace string,
) (string, error)

GetNamespaceUID returns the kubernetes identifier for a given namespace in this cluster.

func (*FakeClusterClient) GetStoreValue 

func (cc *FakeClusterClient) GetStoreValue(ctx context.Context, key string) (string, error)

GetStoreValue gets the value of the argument key.

func (*FakeClusterClient) SetStoreValue 

func (cc *FakeClusterClient) SetStoreValue(ctx context.Context, key string, value string) error

SetStoreValue sets the argument key to the argument value.

func (*FakeClusterClient) Summary 

func (cc *FakeClusterClient) Summary(ctx context.Context) (string, error)

Summary creates a fake summary output of the current cluster state.

type KubeClusterClient 

type KubeClusterClient struct {
	// contains filtered or unexported fields
}

KubeClusterClient is an implementation of a ClusterClient that hits an actual Kubernetes API. It's backed by a kube.OrderedClient which, in turn, wraps kubectl.

func (*KubeClusterClient) Apply 

func (cc *KubeClusterClient) Apply(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]byte, error)

Apply does a kubectl apply for the resources at the argument path.

func (*KubeClusterClient) ApplyStructured 

func (cc *KubeClusterClient) ApplyStructured(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]apply.Result, error)

ApplyStructured does a structured kubectl apply for the resources at the argument path.

func (*KubeClusterClient) Close 

func (cc *KubeClusterClient) Close() error

Close closes the client and cleans up all of the associated resources.

func (*KubeClusterClient) Config 

func (cc *KubeClusterClient) Config() *config.ClusterConfig

Config returns this client's cluster config.

func (*KubeClusterClient) Diff 

func (cc *KubeClusterClient) Diff(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]byte, error)

Diff runs a kubectl diff between the configs at the argument path and the associated resources in the cluster. It returns raw output that can be immediately printed to the console.

func (*KubeClusterClient) DiffStructured 

func (cc *KubeClusterClient) DiffStructured(
	ctx context.Context,
	paths []string,
	serverSide bool,
) ([]diff.Result, error)

DiffStructured runs a kubectl diff between the configs at the argument path and the associated resources in the cluster. It returns a structured result that can be used printed to a table.

func (*KubeClusterClient) GetNamespaceUID 

func (cc *KubeClusterClient) GetNamespaceUID(
	ctx context.Context,
	namespace string,
) (string, error)

GetNamespaceUID returns the kubernetes identifier for a given namespace in this cluster.

func (*KubeClusterClient) GetStoreValue 

func (cc *KubeClusterClient) GetStoreValue(ctx context.Context, key string) (string, error)

GetStoreValue gets the value of the argument key.

func (*KubeClusterClient) SetStoreValue 

func (cc *KubeClusterClient) SetStoreValue(ctx context.Context, key string, value string) error

SetStoreValue sets the value of the argument key to the argument value.

func (*KubeClusterClient) Summary 

func (cc *KubeClusterClient) Summary(ctx context.Context) (string, error)

Summary returns a summary of the current cluster state.

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