public TriggerBinding(GooglePubSubTriggerAttribute googlePubSubTriggerAttribute, ParameterInfo parameter, Microsoft.Extensions.Logging.ILogger logger)
{
this.googlePubSubTriggerAttribute = googlePubSubTriggerAttribute;
this.parameter = parameter;
this.logger = logger;
bindingContract = CreateBindingDataContract();
}
private Task CreateSubscription(Topics topicsClient, GooglePubSubTriggerAttribute triggerAttribute, CancellationToken cancellationToken)
{
var topicName = $"projects/{triggerAttribute.ProjectId}/topics/{triggerAttribute.TopicId}";
var topic = new TransparentApiClient.Google.PubSub.V1.Schema.Topic()
{
name = topicName
//ackDeadlineSeconds= triggerAttribute.AcknowledgeDeadline,
//name = triggerAttribute.SubscriptionId,
//topic = $"projects/{triggerAttribute.ProjectId}/topics/{triggerAttribute.TopicId}"
};
return(topicsClient.CreateAsync(topicName, topic, null, cancellationToken));
}
internal static GooglePubSubTriggerAttribute GetAttributeByConfiguration(GooglePubSubTriggerAttribute googlePubSubTriggerAttribute)
{
if (string.IsNullOrWhiteSpace(googlePubSubTriggerAttribute.ConfigurationNodeName))
{
return(googlePubSubTriggerAttribute);
}
var credentialsString = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(Credentials)}", EnvironmentVariableTarget.Process);
var credentialsFileName = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(CredentialsFileName)}", EnvironmentVariableTarget.Process);
var projectId = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(ProjectId)}", EnvironmentVariableTarget.Process);
var topicId = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(TopicId)}", EnvironmentVariableTarget.Process);
var subscriptionId = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(SubscriptionId)}", EnvironmentVariableTarget.Process);
GooglePubSubTriggerAttribute newGooglePubSubTriggerAttribute = null;
if (string.IsNullOrWhiteSpace(credentialsString) && string.IsNullOrEmpty(credentialsFileName))
{
newGooglePubSubTriggerAttribute = new GooglePubSubTriggerAttribute(projectId, topicId, subscriptionId);
}
else
{
if (string.IsNullOrWhiteSpace(credentialsString))
{
newGooglePubSubTriggerAttribute = new GooglePubSubTriggerAttribute(credentialsFileName, projectId, topicId, subscriptionId);
}
else
{
var credentials = System.Text.Encoding.UTF8.GetBytes(credentialsString);
newGooglePubSubTriggerAttribute = new GooglePubSubTriggerAttribute(credentials, projectId, topicId, subscriptionId);
}
}
var createSubscriptionIfDoesntExist = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(CreateSubscriptionIfDoesntExist)}", EnvironmentVariableTarget.Process);
var maxBatchSize = Environment.GetEnvironmentVariable($"{googlePubSubTriggerAttribute.ConfigurationNodeName}.{nameof(MaxBatchSize)}", EnvironmentVariableTarget.Process);
if (createSubscriptionIfDoesntExist != null)
{
newGooglePubSubTriggerAttribute.CreateSubscriptionIfDoesntExist = bool.Parse(createSubscriptionIfDoesntExist);
}
if (maxBatchSize != null && System.Text.RegularExpressions.Regex.IsMatch(maxBatchSize, "^\\d+$"))
{
newGooglePubSubTriggerAttribute.MaxBatchSize = int.Parse(maxBatchSize);
}
return(newGooglePubSubTriggerAttribute);
}
public Task <ITriggerBinding> TryCreateAsync(TriggerBindingProviderContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
ParameterInfo parameter = context.Parameter;
GooglePubSubTriggerAttribute attribute = parameter.GetCustomAttribute <GooglePubSubTriggerAttribute>(inherit: false);
if (attribute == null)
{
return(Task.FromResult <ITriggerBinding>(null));
}
// TODO: Define the types your binding supports here
if (parameter.ParameterType != typeof(IEnumerable <string>) &&
parameter.ParameterType != typeof(string[]))
{
throw new InvalidOperationException($"Can't bind {nameof(GooglePubSubTriggerAttribute)} to type '{parameter.ParameterType}'.");
}
return(Task.FromResult <ITriggerBinding>(new TriggerBinding(attribute, context.Parameter, logger)));
}
public Listener(ITriggeredFunctionExecutor executor, GooglePubSubTriggerAttribute triggerAttribute, Microsoft.Extensions.Logging.ILogger logger)
{
this.executor = executor;
this.logger = logger;
this.triggerAttribute = GooglePubSubTriggerAttribute.GetAttributeByConfiguration(triggerAttribute);
}
