// [Route("Subscribe")]
public async Task <AcknowledgeAction> SubscribeAsync(SubscribeAction action)
{
var connectionId = CurrentRequest.RequestContext.ConnectionId;
LogInfo($"Subscribe request from: {connectionId}");
// validate request
if (string.IsNullOrEmpty(action.Rule))
{
return(action.AcknowledgeError("missing or invalid rule name"));
}
// retrieve connection record
var connection = await _dataTable.GetConnectionRecordAsync(connectionId);
if (connection == null)
{
LogInfo("Connection was removed");
return(action.AcknowledgeError("connection gone"));
}
if (connection.State == ConnectionState.Failed)
{
LogInfo("Connection is in failed state");
throw Abort(action.AcknowledgeError("connection reset required"));
}
if (connection.SubscriptionArn == null)
{
LogInfo("Client has not announced itself");
return(action.AcknowledgeError("client is unannounced"));
}
if (connection.State != ConnectionState.Open)
{
LogInfo("Connection is not open (state: {0})", connection.State);
throw Abort(action.AcknowledgeError("action not allowed"));
}
// validate pattern
var validPattern = false;
try {
validPattern = EventPatternMatcher.IsValid(JObject.Parse(action.Pattern));
} catch {
// nothing to do
}
if (!validPattern)
{
return(action.AcknowledgeError("invalid pattern"));
}
// create or update event rule
await _dataTable.CreateOrUpdateRuleRecordAsync(new RuleRecord {
Rule = action.Rule,
Pattern = action.Pattern,
ConnectionId = connection.ConnectionId
});
return(action.AcknowledgeOk());
}
public void Pattern_with_null_serialized_is_valid()
{
// arrange
var pattern = JObject.Parse("{\"source\":[\"Sample.BlazorEventsSample:1.0-DEV@stevebv7-lambdasharp-cor-deploymentbucketresource-9h53iqcat7uj::MyBlazorApp\"],\"detail-type\":[\"Sample.BlazorEventsSample.MyBlazorApp.Shared.TodoItem\"],\"resources\":[\"lambdasharp:tier:SteveBv7\"],\"detail\":null}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeTrue();
}
public void Empty_pattern_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
public void Pattern_with_nested_list_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ [ 42 ] ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
public void Pattern_with_null_is_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ null ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeTrue();
}
public void Pattern_with_invalid_filter_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""Bar"": 42 } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
public void Pattern_with_exists_null_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""exists"": null } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
public void Pattern_with_cidr_bad_prefix_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""cidr"": ""1.1.1.1/42"" } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
public void Pattern_with_numeric_two_operations_is_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""numeric"": [ "">"", 42, ""<"", 404 ] } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeTrue();
}
public void Pattern_with_anything_but_content_filter_is_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""anything-but"": { ""prefix"": ""Bar"" } } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeTrue();
}
public void Pattern_with_anything_but_numeric_is_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""anything-but"": 42 } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeTrue();
}
public void Pattern_with_prefix_list_is_not_valid()
{
// arrange
var pattern = JObject.Parse(@"{
""Foo"": [ { ""prefix"": [ ""Bar"" ] } ]
}");
// act
var isValid = EventPatternMatcher.IsValid(pattern);
// assert
isValid.Should().BeFalse();
}
// [Route("Subscribe")]
public async Task <AcknowledgeAction> SubscribeAsync(SubscribeAction action)
{
var connectionId = CurrentRequest.RequestContext.ConnectionId;
LogInfo($"Subscribe request from: {connectionId}");
// validate request
if (string.IsNullOrEmpty(action.Rule))
{
return(new AcknowledgeAction {
RequestId = action.RequestId,
Status = "Error",
Message = "Missing or invalid rule name"
});
}
// retrieve websocket connection record
var connection = await _dataTable.GetConnectionAsync(connectionId);
if (connection == null)
{
LogInfo("Connection was removed");
return(new AcknowledgeAction {
RequestId = action.RequestId,
Rule = action.Rule,
Status = "Error",
Message = "Connection gone"
});
}
// validate pattern
var validPattern = false;
try {
validPattern = EventPatternMatcher.IsValid(JObject.Parse(action.Pattern));
} catch {
// nothing to do
}
if (!validPattern)
{
return(new AcknowledgeAction {
RequestId = action.RequestId,
Rule = action.Rule,
Status = "Error",
Message = "Invalid pattern"
});
}
// create or update event rule
await _dataTable.CreateOrUpdateRuleAsync(new RuleRecord {
Rule = action.Rule,
Pattern = action.Pattern,
ConnectionId = connection.ConnectionId
});
return(new AcknowledgeAction {
RequestId = action.RequestId,
Rule = action.Rule,
Status = "Ok"
});
}
