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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.
package com.azure.security.keyvault.keys;
import com.azure.core.annotation.ServiceClientBuilder;
import com.azure.core.client.traits.ConfigurationTrait;
import com.azure.core.client.traits.HttpTrait;
import com.azure.core.client.traits.TokenCredentialTrait;
import com.azure.core.credential.TokenCredential;
import com.azure.core.http.HttpClient;
import com.azure.core.http.HttpHeaders;
import com.azure.core.http.HttpPipeline;
import com.azure.core.http.HttpPipelineBuilder;
import com.azure.core.http.HttpPipelinePosition;
import com.azure.core.http.policy.AddHeadersPolicy;
import com.azure.core.http.policy.HttpLogDetailLevel;
import com.azure.core.http.policy.HttpLogOptions;
import com.azure.core.http.policy.HttpLoggingPolicy;
import com.azure.core.http.policy.HttpPipelinePolicy;
import com.azure.core.http.policy.HttpPolicyProviders;
import com.azure.core.http.policy.RetryOptions;
import com.azure.core.http.policy.RetryPolicy;
import com.azure.core.http.policy.UserAgentPolicy;
import com.azure.core.util.ClientOptions;
import com.azure.core.util.Configuration;
import com.azure.core.util.CoreUtils;
import com.azure.core.util.HttpClientOptions;
import com.azure.core.util.TracingOptions;
import com.azure.core.util.builder.ClientBuilderUtil;
import com.azure.core.util.logging.ClientLogger;
import com.azure.core.util.tracing.Tracer;
import com.azure.core.util.tracing.TracerProvider;
import com.azure.security.keyvault.keys.implementation.KeyClientImpl;
import com.azure.security.keyvault.keys.implementation.KeyVaultCredentialPolicy;
import com.azure.security.keyvault.keys.implementation.KeyVaultErrorCodeStrings;
import com.azure.security.keyvault.keys.models.KeyVaultKeyIdentifier;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* This class provides a fluent builder API to help aid the configuration and instantiation of the {@link KeyAsyncClient
* secret async client} and {@link KeyClient secret sync client}, by calling
* {@link KeyClientBuilder#buildAsyncClient() buildAsyncClient} and {@link KeyClientBuilder#buildClient() buildClient}
* respectively. It constructs an instance of the desired client.
*
* The minimal configuration options required by {@link KeyClientBuilder} to build a {@link KeyAsyncClient} are
* {@link String vaultUrl} and {@link TokenCredential credential}.
*
*
*
* KeyAsyncClient keyAsyncClient = new KeyClientBuilder()
* .vaultUrl("<your-key-vault-url>")
* .credential(new DefaultAzureCredentialBuilder().build())
* .buildAsyncClient();
*
*
*
* The {@link HttpLogDetailLevel log detail level}, multiple custom {@link HttpLoggingPolicy policies} and custom
* {@link HttpClient http client} can be optionally configured in the {@link KeyClientBuilder}.
*
*
*
* KeyAsyncClient keyAsyncClient = new KeyClientBuilder()
* .vaultUrl("<your-key-vault-url>")
* .credential(new DefaultAzureCredentialBuilder().build())
* .httpLogOptions(new HttpLogOptions().setLogLevel(HttpLogDetailLevel.BODY_AND_HEADERS))
* .httpClient(HttpClient.createDefault())
* .buildAsyncClient();
*
*
*
* The minimal configuration options required by {@link KeyClientBuilder keyClientBuilder} to build {@link
* KeyClient} are {@link String vaultUrl} and {@link TokenCredential credential}.
*
*
*
* KeyClient keyClient = new KeyClientBuilder()
* .vaultUrl("<your-key-vault-url>")
* .credential(new DefaultAzureCredentialBuilder().build())
* .buildClient();
*
*
*
* @see KeyAsyncClient
* @see KeyClient
*/
@ServiceClientBuilder(serviceClients = KeyClient.class)
public final class KeyClientBuilder implements
TokenCredentialTrait,
HttpTrait,
ConfigurationTrait {
private static final ClientLogger LOGGER = new ClientLogger(KeyClientBuilder.class);
private static final String CLIENT_NAME;
private static final String CLIENT_VERSION;
static {
Map properties = CoreUtils.getProperties("azure-key-vault-keys.properties");
CLIENT_NAME = properties.getOrDefault("name", "UnknownName");
CLIENT_VERSION = properties.getOrDefault("version", "UnknownVersion");
}
// Please see here
// for more information on Azure resource provider namespaces.
private static final String KEYVAULT_TRACING_NAMESPACE_VALUE = "Microsoft.KeyVault";
private static final ClientOptions DEFAULT_CLIENT_OPTIONS = new ClientOptions();
private final List perCallPolicies;
private final List perRetryPolicies;
private TokenCredential credential;
private HttpPipeline pipeline;
private String vaultUrl;
private HttpClient httpClient;
private HttpLogOptions httpLogOptions;
private RetryPolicy retryPolicy;
private RetryOptions retryOptions;
private Configuration configuration;
private KeyServiceVersion version;
private ClientOptions clientOptions;
private boolean disableChallengeResourceVerification = false;
/**
* The constructor with defaults.
*/
public KeyClientBuilder() {
httpLogOptions = new HttpLogOptions();
perCallPolicies = new ArrayList<>();
perRetryPolicies = new ArrayList<>();
}
/**
* Creates a {@link KeyClient} based on options set in the builder.
* Every time {@code buildClient()} is called, a new instance of {@link KeyClient} is created.
*
* If {@link KeyClientBuilder#pipeline(HttpPipeline) pipeline} is set, then the {@code pipeline} and
* {@link KeyClientBuilder#vaultUrl(String) vaultUrl} are used to create the {@link KeyClientBuilder client}.
* All other builder settings are ignored. If {@code pipeline} is not set, then {@link
* KeyClientBuilder#credential(TokenCredential) key vault credential} and {@link
* KeyClientBuilder#vaultUrl(String) key vault url} are required to build the {@link KeyClient client}.
*
* @return A {@link KeyClient} with the options set from the builder.
*
* @throws IllegalStateException If {@link KeyClientBuilder#credential(TokenCredential)} or
* {@link KeyClientBuilder#vaultUrl(String)} have not been set.
* @throws IllegalStateException If both {@link #retryOptions(RetryOptions)}
* and {@link #retryPolicy(RetryPolicy)} have been set.
*/
public KeyClient buildClient() {
return new KeyClient(buildInnerClient(), vaultUrl, version != null ? version : KeyServiceVersion.getLatest());
}
/**
* Creates a {@link KeyAsyncClient} based on options set in the builder.
* Every time {@code buildAsyncClient()} is called, a new instance of {@link KeyAsyncClient} is created.
*
* If {@link KeyClientBuilder#pipeline(HttpPipeline) pipeline} is set, then the {@code pipeline} and
* {@link KeyClientBuilder#vaultUrl(String) vaultUrl} are used to create the {@link KeyClientBuilder client}.
* All other builder settings are ignored. If {@code pipeline} is not set, then {@link
* KeyClientBuilder#credential(TokenCredential) key vault credential} and {@link KeyClientBuilder#vaultUrl(String)}
* key vault url are required to build the {@link KeyAsyncClient client}.
*
* @return A {@link KeyAsyncClient} with the options set from the builder.
*
* @throws IllegalStateException If {@link KeyClientBuilder#credential(TokenCredential)} or
* {@link KeyClientBuilder#vaultUrl(String)} have not been set.
* @throws IllegalStateException If both {@link #retryOptions(RetryOptions)}
* and {@link #retryPolicy(RetryPolicy)} have been set.
*/
public KeyAsyncClient buildAsyncClient() {
return new KeyAsyncClient(buildInnerClient(), vaultUrl,
version != null ? version : KeyServiceVersion.getLatest());
}
private KeyClientImpl buildInnerClient() {
Configuration buildConfiguration =
(configuration == null) ? Configuration.getGlobalConfiguration().clone() : configuration;
String buildEndpoint = getBuildEndpoint(buildConfiguration);
if (buildEndpoint == null) {
throw LOGGER.logExceptionAsError(
new IllegalStateException(KeyVaultErrorCodeStrings.VAULT_END_POINT_REQUIRED));
}
KeyServiceVersion serviceVersion = version != null ? version : KeyServiceVersion.getLatest();
if (pipeline != null) {
return new KeyClientImpl(pipeline, serviceVersion.getVersion());
}
if (credential == null) {
throw LOGGER.logExceptionAsError(new IllegalStateException(KeyVaultErrorCodeStrings.CREDENTIALS_REQUIRED));
}
// Closest to API goes first, closest to wire goes last.
final List policies = new ArrayList<>();
httpLogOptions = (httpLogOptions == null) ? new HttpLogOptions() : httpLogOptions;
ClientOptions localClientOptions = clientOptions != null ? clientOptions : DEFAULT_CLIENT_OPTIONS;
policies.add(new UserAgentPolicy(CoreUtils.getApplicationId(localClientOptions, httpLogOptions), CLIENT_NAME,
CLIENT_VERSION, buildConfiguration));
HttpHeaders headers = CoreUtils.createHttpHeadersFromClientOptions(localClientOptions);
if (headers != null) {
policies.add(new AddHeadersPolicy(new HttpHeaders(headers)));
}
// Add per call additional policies.
policies.addAll(perCallPolicies);
HttpPolicyProviders.addBeforeRetryPolicies(policies);
// Add retry policy.
policies.add(ClientBuilderUtil.validateAndGetRetryPolicy(retryPolicy, retryOptions));
policies.add(new KeyVaultCredentialPolicy(credential, disableChallengeResourceVerification));
// Add per retry additional policies.
policies.addAll(perRetryPolicies);
HttpPolicyProviders.addAfterRetryPolicies(policies);
policies.add(new HttpLoggingPolicy(httpLogOptions));
TracingOptions tracingOptions = localClientOptions.getTracingOptions();
Tracer tracer = TracerProvider.getDefaultProvider()
.createTracer(CLIENT_NAME, CLIENT_VERSION, KEYVAULT_TRACING_NAMESPACE_VALUE, tracingOptions);
HttpPipeline pipeline = new HttpPipelineBuilder()
.policies(policies.toArray(new HttpPipelinePolicy[0]))
.httpClient(httpClient)
.tracer(tracer)
.clientOptions(localClientOptions)
.build();
return new KeyClientImpl(pipeline, serviceVersion.getVersion());
}
/**
* Sets the vault endpoint URL to send HTTP requests to. You should validate that this URL references a valid Key
* Vault or Managed HSM resource. Refer to the following
* documentation for details.
*
* @param vaultUrl The vault url is used as destination on Azure to send requests to. If you have a key identifier,
* create a new {@link KeyVaultKeyIdentifier} to parse it and obtain the {@code vaultUrl} and other
* information.
*
* @return The updated {@link KeyClientBuilder} object.
*
* @throws IllegalArgumentException If {@code vaultUrl} cannot be parsed into a valid URL.
* @throws NullPointerException If {@code vaultUrl} is {@code null}.
*/
public KeyClientBuilder vaultUrl(String vaultUrl) {
if (vaultUrl == null) {
throw LOGGER.logExceptionAsError(new NullPointerException("'vaultUrl' cannot be null."));
}
try {
URL url = new URL(vaultUrl);
this.vaultUrl = url.toString();
} catch (MalformedURLException ex) {
throw LOGGER.logExceptionAsError(new IllegalArgumentException(
"The Azure Key Vault url is malformed.", ex));
}
return this;
}
/**
* Sets the {@link TokenCredential} used to authorize requests sent to the service. Refer to the Azure SDK for Java
* identity and authentication
* documentation for more details on proper usage of the {@link TokenCredential} type.
*
* @param credential {@link TokenCredential} used to authorize requests sent to the service.
*
* @return The updated {@link KeyClientBuilder} object.
*
* @throws NullPointerException If {@code credential} is {@code null}.
*/
@Override
public KeyClientBuilder credential(TokenCredential credential) {
if (credential == null) {
throw LOGGER.logExceptionAsError(new NullPointerException("'credential' cannot be null."));
}
this.credential = credential;
return this;
}
/**
* Sets the {@link HttpLogOptions logging configuration} to use when sending and receiving requests to and from
* the service. If a {@code logLevel} is not provided, default value of {@link HttpLogDetailLevel#NONE} is set.
*
* Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* @param logOptions The {@link HttpLogOptions logging configuration} to use when sending and receiving requests to
* and from the service.
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder httpLogOptions(HttpLogOptions logOptions) {
httpLogOptions = logOptions;
return this;
}
/**
* Adds a {@link HttpPipelinePolicy pipeline policy} to apply on each request sent.
*
* Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* @param policy A {@link HttpPipelinePolicy pipeline policy}.
* @return The updated {@link KeyClientBuilder} object.
*
* @throws NullPointerException If {@code policy} is {@code null}.
*/
@Override
public KeyClientBuilder addPolicy(HttpPipelinePolicy policy) {
if (policy == null) {
throw LOGGER.logExceptionAsError(new NullPointerException("'policy' cannot be null."));
}
if (policy.getPipelinePosition() == HttpPipelinePosition.PER_CALL) {
perCallPolicies.add(policy);
} else {
perRetryPolicies.add(policy);
}
return this;
}
/**
* Sets the {@link HttpClient} to use for sending and receiving requests to and from the service.
*
* Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* @param client The {@link HttpClient} to use for requests.
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder httpClient(HttpClient client) {
this.httpClient = client;
return this;
}
/**
* Sets the {@link HttpPipeline} to use for the service client.
*
* Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* The {@link #vaultUrl(String) vaultUrl} is not ignored when
* {@code pipeline} is set.
*
* @param pipeline {@link HttpPipeline} to use for sending service requests and receiving responses.
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder pipeline(HttpPipeline pipeline) {
this.pipeline = pipeline;
return this;
}
/**
* Sets the {@link KeyServiceVersion} that is used when making API requests.
*
* If a service version is not provided, the service version that will be used will be the latest known service
* version based on the version of the client library being used. If no service version is specified, updating to a
* newer version the client library will have the result of potentially moving to a newer service version.
*
* @param version {@link KeyServiceVersion} of the service to be used when making requests.
*
* @return The updated {@link KeyClientBuilder} object.
*/
public KeyClientBuilder serviceVersion(KeyServiceVersion version) {
this.version = version;
return this;
}
/**
* Sets the configuration store that is used during construction of the service client.
*
* The default configuration store is a clone of the {@link Configuration#getGlobalConfiguration() global
* configuration store}, use {@link Configuration#NONE} to bypass using configuration settings during construction.
*
* @param configuration The configuration store used to get configuration details.
*
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder configuration(Configuration configuration) {
this.configuration = configuration;
return this;
}
/**
* Sets the {@link RetryPolicy} that is used when each request is sent.
*
* The default retry policy will be used in the pipeline, if not provided.
*
* Setting this is mutually exclusive with using {@link #retryOptions(RetryOptions)}.
*
* @param retryPolicy user's retry policy applied to each request.
*
* @return The updated {@link KeyClientBuilder} object.
*/
public KeyClientBuilder retryPolicy(RetryPolicy retryPolicy) {
this.retryPolicy = retryPolicy;
return this;
}
/**
* Sets the {@link RetryOptions} for all the requests made through the client.
*
*
Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* Setting this is mutually exclusive with using {@link #retryPolicy(RetryPolicy)}.
*
* @param retryOptions The {@link RetryOptions} to use for all the requests made through the client.
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder retryOptions(RetryOptions retryOptions) {
this.retryOptions = retryOptions;
return this;
}
/**
* Allows for setting common properties such as application ID, headers, proxy configuration, etc. Note that it is
* recommended that this method be called with an instance of the {@link HttpClientOptions}
* class (a subclass of the {@link ClientOptions} base class). The HttpClientOptions subclass provides more
* configuration options suitable for HTTP clients, which is applicable for any class that implements this HttpTrait
* interface.
*
*
Note: It is important to understand the precedence order of the HttpTrait APIs. In
* particular, if a {@link HttpPipeline} is specified, this takes precedence over all other APIs in the trait, and
* they will be ignored. If no {@link HttpPipeline} is specified, a HTTP pipeline will be constructed internally
* based on the settings provided to this trait. Additionally, there may be other APIs in types that implement this
* trait that are also ignored if an {@link HttpPipeline} is specified, so please be sure to refer to the
* documentation of types that implement this trait to understand the full set of implications.
*
* @param clientOptions A configured instance of {@link HttpClientOptions}.
* @see HttpClientOptions
* @return The updated {@link KeyClientBuilder} object.
*/
@Override
public KeyClientBuilder clientOptions(ClientOptions clientOptions) {
this.clientOptions = clientOptions;
return this;
}
/**
* Disables verifying if the authentication challenge resource matches the Key Vault or Managed HSM domain. This
* verification is performed by default.
*
* @return The updated {@link KeyClientBuilder} object.
*/
public KeyClientBuilder disableChallengeResourceVerification() {
this.disableChallengeResourceVerification = true;
return this;
}
private String getBuildEndpoint(Configuration configuration) {
if (vaultUrl != null) {
return vaultUrl;
}
String configEndpoint = configuration.get("AZURE_KEYVAULT_ENDPOINT");
if (CoreUtils.isNullOrEmpty(configEndpoint)) {
return null;
}
try {
URL url = new URL(configEndpoint);
return url.toString();
} catch (MalformedURLException ex) {
return null;
}
}
}