/// <inheritdoc/>
public Task <OidcToken> GetOidcTokenAsync(OidcTokenOptions options, CancellationToken cancellationToken = default)
{
options.ThrowIfNull(nameof(options));
// If at some point some properties are added to OidcToken that depend on the token having been fetched
// then initialize the token here.
TokenRefreshManager tokenRefreshManager = null;
tokenRefreshManager = new TokenRefreshManager(ct => RefreshOidcTokenAsync(tokenRefreshManager, options, ct), Clock, Logger);
return(Task.FromResult(new OidcToken(tokenRefreshManager)));
}
private async Task <bool> RefreshOidcTokenAsync(TokenRefreshManager caller, OidcTokenOptions oidcTokenOptions, CancellationToken cancellationToken)
{
var request = new ImpersonationOIdCTokenRequest
{
DelegateAccounts = DelegateAccounts,
Audience = oidcTokenOptions.TargetAudience,
IncludeEmail = true
};
var oidcTokenUrl = string.Format(GoogleAuthConsts.IamIdTokenEndpointFormatString, TargetPrincipal);
caller.Token = await request.ExecuteAsync(HttpClient, oidcTokenUrl, Clock, Logger, cancellationToken)
.ConfigureAwait(false);
return(true);
}
private async Task <bool> RefreshOidcTokenAsync(TokenRefreshManager caller, OidcTokenOptions options, CancellationToken cancellationToken)
{
var now = Clock.UtcNow;
var jwtExpiry = now + JwtLifetime;
string jwtForOidc = CreateJwtAccessTokenForOidc(options, now, jwtExpiry);
var req = new GoogleAssertionTokenRequest()
{
Assertion = jwtForOidc
};
caller.Token = await req.ExecuteAsync(HttpClient, TokenServerUrl, cancellationToken, Clock).ConfigureAwait(false);
return(true);
}
private async Task <bool> RefreshOidcTokenAsync(TokenRefreshManager caller, OidcTokenOptions oidcTokenOptions, CancellationToken cancellationToken)
{
var request = new ImpersonationOIdCTokenRequest
{
DelegateAccounts = Options.DelegateAccounts,
Audience = oidcTokenOptions.TargetAudience,
IncludeEmail = true
};
var body = NewtonsoftJsonSerializer.Instance.Serialize(request);
var content = new StringContent(body, Encoding.UTF8, "application/json");
var oidcTokenUrl = String.Format(GoogleAuthConsts.IamIdTokenEndpointFormatString, Options.TargetPrincipal);
var response = await HttpClient.PostAsync(oidcTokenUrl, content, cancellationToken).ConfigureAwait(false);
caller.Token = await TokenResponse.FromHttpResponseAsync(response, Clock, Logger).ConfigureAwait(false);
return(true);
}
internal OidcToken(TokenRefreshManager refreshManager) =>