ios - AWSWebIdentityCredentialsProvider 如何获取参数值？

Question

我正在尝试使用以下代码进行身份验证，

但我无法获取需要传递给以下参数的值，providerId、roleArn、roleSessionName。

但是，我将从我们的本地服务器接收 webIdentityToken 值。

AWSWebIdentityCredentialsProvider *provideer = [AWSWebIdentityCredentialsProvider credentialsWithRegionType:AWSRegionUSEast1 providerId:@"" roleArn:@"" roleSessionName:"" webIdentityToken:@""];

问候，巴特

Answer 1

Class.h 
-------

@interface AWSCustomCredentialProvider : NSObject <AWSCredentialsProvider>

@property (nonatomic, readonly) NSString *accessKey;

@property (nonatomic, readonly) NSString *secretKey;

@property (nonatomic, readonly) NSString *sessionKey;

+ (instancetype)credentialsWithAccessKey:(NSString *)accessKey
                               secretKey:(NSString *)secretKey sessionKey:
(NSString*)sessionKey;

+ (instancetype)credentialsWithCredentialsFilename:(NSString *)credentialsFilename;

- (instancetype)initWithAccessKey:(NSString *)accessKey
                        secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey;


@end

Class.m 
-------
+ (instancetype)credentialsWithAccessKey:(NSString *)accessKey
                               secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey
{
    AWSCustomCredentialProvider *credentials = [[AWSCustomCredentialProvider alloc] initWithAccessKey:accessKey
                                                                                              secretKey:secretKey sessionKey:sessionKey];
    return credentials;
}
+ (instancetype)credentialsWithCredentialsFilename:(NSString *)credentialsFilename
{
    NSString *filePath = [[NSBundle bundleForClass:[self class]] pathForResource:credentialsFilename ofType:@"json"];
    NSDictionary *credentialsJson = [NSJSONSerialization JSONObjectWithData:[NSData dataWithContentsOfFile:filePath]
                                                                    options:NSJSONReadingMutableContainers
                                                                      error:nil];
    AWSCustomCredentialProvider *credentials = [[AWSCustomCredentialProvider alloc] initWithAccessKey:credentialsJson[@"accessKey"]
                                                                                              secretKey:credentialsJson[@"secretKey"] sessionKey:credentialsJson[@"sessionKey"]];
    return credentials;
}
- (instancetype)initWithAccessKey:(NSString *)accessKey
                        secretKey:(NSString *)secretKey sessionKey:(NSString*)sessionKey
{
    if (self = [super init]) {
        _accessKey = accessKey;
        _secretKey = secretKey;
        _sessionKey = sessionKey;
    }
    return self;
}
Usage is: 
-----
 AWSCustomCredentialProvider *credentialsProvider = [AWSCustomCredentialProvider credentialsWithAccessKey:[[NSUserDefaults standardUserDefaults] objectForKey:AccessKey_Element] secretKey:[[NSUserDefaults standardUserDefaults] objectForKey:SecretKey_Element] sessionKey:[[NSUserDefaults standardUserDefaults] objectForKey:Token_Element]];