Package org.jclouds

Class ContextBuilder

java.lang.Object

org.jclouds.ContextBuilder

public class ContextBuilder
extends Object

Creates Context or Injector configured to an api and endpoint. Alternatively, this can be used to make a portable View of that api.
ex. to build a Api on a particular endpoint using the typed interface

 api = ContextBuilder.newBuilder(new NovaApiMetadata())
                     .endpoint("http://10.10.10.10:5000/v2.0")
                     .credentials(user, pass)
                     .buildApi(NovaApi.class);
 

ex. to build a View of a particular backend context, looked up by key.

 context = ContextBuilder.newBuilder("aws-s3")
                         .credentials(apikey, secret)
                         .buildView(BlobStoreContext.class);
 

Assumptions

Threadsafe objects will be bound as singletons to the Injector or Context provided.

If no Modules are specified, the default logging and http transports will be installed.

See Also:

• Context
• View
• ApiMetadata
• ProviderMetadata

Field Summary

Fields

Modifier and Type	Field	Description
protected ApiMetadata	apiMetadata
protected String	apiVersion
protected String	buildVersion
protected String	credential
protected com.google.common.base.Optional<com.google.common.base.Supplier<Credentials>>	credentialsSupplierOption
protected com.google.common.base.Optional<String>	endpoint
protected com.google.common.base.Optional<String>	identity
protected List<com.google.inject.Module>	modules
protected com.google.common.base.Optional<String>	name
protected com.google.common.base.Optional<Properties>	overrides
protected final String	providerId
protected com.google.common.base.Optional<ProviderMetadata>	providerMetadata

Constructor Summary

Constructors

Modifier	Constructor	Description
	ContextBuilder(ApiMetadata apiMetadata)
protected	ContextBuilder(ProviderMetadata providerMetadata)
protected	ContextBuilder(ProviderMetadata providerMetadata, ApiMetadata apiMetadata)

Method Summary

Modifier and Type	Method	Description
ContextBuilder	apiVersion(String apiVersion)
<C extends Context> C	build()	Builds the base context for this api.
<C extends Context> C	build(com.google.common.reflect.TypeToken<C> contextType)	this will build the context supported by the current ApiMetadata.
<V extends View> V	build(Class<V> viewType)
<A extends Closeable> A	buildApi(com.google.common.reflect.TypeToken<A> apiType)	like buildApi(Class) but permits a type-token for convenience.
<A extends Closeable> A	buildApi(Class<A> api)	This will return the top-level interface for the api or provider.
protected com.google.common.base.Supplier<Credentials>	buildCredentialsSupplier(Properties expanded)
com.google.inject.Injector	buildInjector()
static com.google.inject.Injector	buildInjector(String name, ProviderMetadata providerMetadata, com.google.common.base.Supplier<Credentials> creds, List<com.google.inject.Module> inputModules)
ContextBuilder	buildVersion(String buildVersion)
<V extends View> V	buildView(com.google.common.reflect.TypeToken<V> viewType)	this will build any view supported by the ApiMetadata.
<V extends View> V	buildView(Class<V> viewType)
ContextBuilder	credentials(String identity, String credential)	constant value of the cloud identity and credential.
ContextBuilder	credentialsSupplier(com.google.common.base.Supplier<Credentials> credentialsSupplier)	returns the current login credentials.
ContextBuilder	endpoint(String endpoint)
ApiMetadata	getApiMetadata()
protected Properties	getSystemProperties()
ContextBuilder	modules(Iterable<? extends com.google.inject.Module> modules)
ContextBuilder	name(String name)
static ContextBuilder	newBuilder(String providerOrApi)	looks up a provider or api with the given id
static ContextBuilder	newBuilder(ApiMetadata apiMetadata)
static ContextBuilder	newBuilder(ProviderMetadata providerMetadata)
ContextBuilder	overrides(Properties overrides)
static String	searchPropertiesForProviderScopedProperty(Properties mutable, String prov, String key)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

name

protected com.google.common.base.Optional<String> name

providerMetadata

protected com.google.common.base.Optional<ProviderMetadata> providerMetadata

providerId

protected final String providerId

endpoint

protected com.google.common.base.Optional<String> endpoint

identity

protected com.google.common.base.Optional<String> identity

credentialsSupplierOption

protected com.google.common.base.Optional<com.google.common.base.Supplier<Credentials>> credentialsSupplierOption

credential

@Nullable
protected String credential

apiMetadata

protected ApiMetadata apiMetadata

apiVersion

protected String apiVersion

buildVersion

protected String buildVersion

overrides

protected com.google.common.base.Optional<Properties> overrides

modules

protected List<com.google.inject.Module> modules

Constructor Details

ContextBuilder

protected ContextBuilder(ProviderMetadata providerMetadata)

ContextBuilder

protected ContextBuilder(@Nullable
 ProviderMetadata providerMetadata,
 ApiMetadata apiMetadata)

ContextBuilder

public ContextBuilder(ApiMetadata apiMetadata)

Method Details

newBuilder

public static ContextBuilder newBuilder(String providerOrApi)
                                 throws NoSuchElementException

looks up a provider or api with the given id

Parameters:

providerOrApi - id of the provider or api

Returns:

means to build a context to that provider

Throws:

NoSuchElementException - if the id was not configured.

newBuilder

public static ContextBuilder newBuilder(ApiMetadata apiMetadata)

newBuilder

public static ContextBuilder newBuilder(ProviderMetadata providerMetadata)

toString

public String toString()

Overrides:

toString in class Object

name

public ContextBuilder name(String name)

credentialsSupplier

public ContextBuilder credentialsSupplier(com.google.common.base.Supplier<Credentials> credentialsSupplier)

returns the current login credentials. jclouds will not cache this value. Use this when you need to change credentials at runtime.

credentials

public ContextBuilder credentials(String identity,
 @Nullable
 String credential)

constant value of the cloud identity and credential.

Parameters:

credential - (optional depending on ApiMetadata.getCredentialName()

endpoint

public ContextBuilder endpoint(String endpoint)

apiVersion

public ContextBuilder apiVersion(String apiVersion)

buildVersion

public ContextBuilder buildVersion(String buildVersion)

modules

public ContextBuilder modules(Iterable<? extends com.google.inject.Module> modules)

overrides

public ContextBuilder overrides(Properties overrides)

searchPropertiesForProviderScopedProperty

public static String searchPropertiesForProviderScopedProperty(Properties mutable,
 String prov,
 String key)
                                                        throws NoSuchElementException

Throws:

NoSuchElementException

buildInjector

public com.google.inject.Injector buildInjector()

buildCredentialsSupplier

protected com.google.common.base.Supplier<Credentials> buildCredentialsSupplier(Properties expanded)

getSystemProperties

protected Properties getSystemProperties()

buildInjector

public static com.google.inject.Injector buildInjector(String name,
 ProviderMetadata providerMetadata,
 com.google.common.base.Supplier<Credentials> creds,
 List<com.google.inject.Module> inputModules)

build

public <C extends Context> C build()

Builds the base context for this api. Note that this may be of type

invalid reference

Closer

, if nothing else was configured via ApiMetadata.getContext(). Typically, the type returned is ApiContext

See Also:

• ApiMetadata.getContext()
• build(TypeToken)

build

public <V extends View> V build(Class<V> viewType)

See Also:

• buildView(Class)

buildView

public <V extends View> V buildView(Class<V> viewType)

See Also:

• buildView(TypeToken)

buildView

public <V extends View> V buildView(com.google.common.reflect.TypeToken<V> viewType)

this will build any view supported by the ApiMetadata. ex. builder.build(BlobStoreContext.class) will work, if TypeToken<BlobStore> is a configured view of this api.

build

public <C extends Context> C build(com.google.common.reflect.TypeToken<C> contextType)

this will build the context supported by the current ApiMetadata.

buildApi

public <A extends Closeable> A buildApi(Class<A> api)

This will return the top-level interface for the api or provider. Ex.

 api = ContextBuilder.newBuilder("openstack-nova")
                     ... 
                     .buildApi(NovaApi.class);

buildApi

public <A extends Closeable> A buildApi(com.google.common.reflect.TypeToken<A> apiType)

like buildApi(Class) but permits a type-token for convenience.

getApiMetadata

public ApiMetadata getApiMetadata()