public async Task <bool> Handle(DataAccessRequest <IEnvironment> message, IOutboundPort <GenericDataResponse <IEnvironment> > outputPort)
{
switch (message.Strategy)
{
case DataAccessRequest <IEnvironment> .AcquisitionStrategy.All:
// Acquire all associated environments, null-cascade throughout
var user = await _userStore.GetUserById(message.UserId);
if (user != null)
{
await _userStore.LoadEnvironments(user);
}
var envs = user?.Environments;
foreach (var env in envs)
{
await _envStore.LoadControllerFor(env);
await _envStore.LoadPetFor(env);
}
// Compose a response.
var response = new GenericDataResponse <IEnvironment>
{
Result = envs?.ToList()
};
outputPort.Handle(response);
return(envs != null);
default:
throw new ArgumentOutOfRangeException(nameof(message.Strategy));
}
}
public async Task <bool> Handle(MigratePetRequest message, IOutboundPort <BlankResponse> outputPort)
{
// load user - verify they have access to both env and pet specified.
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
await _userStore.LoadEnvironments(user);
await _userStore.LoadPets(user);
var canProceed =
user.Pets.Select(p => p.Id).Contains(message.PetId) &&
user.Environments.Select(e => e.Id).Contains(message.EnvId);
if (!canProceed)
{
return(false);
}
var pet = user.Pets.First(p => p.Id == message.PetId);
var targetEnv = user.Environments.First(env => env.Id == message.EnvId);
await _petStore.MigratePet(pet, targetEnv);
return(true);
}
public async Task <bool> Handle(CreatePetRequest message, IOutboundPort <NewEntityResponse <int> > outputPort)
{
var user = await _userStore.GetUserById(message.User);
if (user == null)
{
return(false);
}
// Compose a new Pet instance:
var pet = _entityFactory.GetPetBuilder()
.SetName(message.Name)
.SetSpecies(await _store.GetSpeciesById(message.SpeciesType))
.SetMorph(message.Morph)
.SetOwner(user)
.Build();
var id = await _store.Create(pet);
var response = new NewEntityResponse <int> {
Id = id
};
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(CreateSpeciesRequest message, IOutboundPort <NewEntityResponse <int> > outputPort)
{
var species = _entityFactory.GetSpeciesBuilder()
.SetName(message.Name)
.SetScientificName(message.ScientificName)
.SetLatitude(message.Latitude)
.SetLongitude(message.Longitude)
.Build();
// validate some stuff:
if (string.IsNullOrWhiteSpace(species.Name) ||
string.IsNullOrEmpty(species.ScientificName) ||
Math.Abs(species.DefaultLatitude) > 90.0 ||
Math.Abs(species.DefaultLongitude) > 180.0)
{
return(false);
}
var response = new NewEntityResponse <int>
{
Id = await _petStore.Create(species)
};
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(DataAccessRequest <ISpecies> message, IOutboundPort <GenericDataResponse <ISpecies> > outputPort)
{
// no need to validate user - species data not user specific.
var response = new GenericDataResponse <ISpecies>();
switch (message.Strategy)
{
case DataAccessRequest <ISpecies> .AcquisitionStrategy.All:
response.Result = await _petStore.GetSpeciesInfo();
break;
case DataAccessRequest <ISpecies> .AcquisitionStrategy.Range:
response.Result = (await _petStore.GetSpeciesInfo())
.Where(message.SelectionPredicate)
.ToArray();
break;
case DataAccessRequest <ISpecies> .AcquisitionStrategy.Single:
response.Result = new[]
{ (await _petStore.GetSpeciesInfo()).FirstOrDefault(message.SelectionPredicate) };
break;
default:
throw new ArgumentOutOfRangeException(nameof(message));
}
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(ModifyUserRolesRequest message, IOutboundPort <BlankResponse> outputPort)
{
// fetch the user instance.
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
switch (message.Mode)
{
case ModifyUserRolesRequest.ModificationMode.Add:
await _userStore.AddToRoles(user, message.DesiredRoles);
return(true);
case ModifyUserRolesRequest.ModificationMode.Set:
await _userStore.RemoveRolesFromUser(user);
await _userStore.AddToRoles(user, message.DesiredRoles);
return(true);
default:
return(false);
}
}
public async Task <bool> Handle(DataAccessRequest <IEnvDataSample> message, IOutboundPort <GenericDataResponse <IEnvDataSample> > outputPort)
{
// verify the user exists:
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
await _userStore.LoadEnvironments(user);
var response = new GenericDataResponse <IEnvDataSample>();
var samples = new List <IEnvDataSample>();
foreach (var env in user.Environments)
{
await _environmentStore.LoadSamplesFor(env);
switch (message.Strategy)
{
case DataAccessRequest <IEnvDataSample> .AcquisitionStrategy.All:
samples.AddRange(env.EnvDataSamples);
break;
case DataAccessRequest <IEnvDataSample> .AcquisitionStrategy.Range:
samples.AddRange(env.EnvDataSamples.Where(message.SelectionPredicate));
break;
case DataAccessRequest <IEnvDataSample> .AcquisitionStrategy.Single:
// this one is a bit different, if we find a match amongst any environments,
// shortcut a return after processing it.
var sample = env.EnvDataSamples.FirstOrDefault(message.SelectionPredicate);
if (sample != null)
{
response.Result = new[] { sample };
outputPort.Handle(response);
return(true);
}
break;
default:
throw new ArgumentOutOfRangeException(nameof(message), "Strategy not recognized.");
}
}
// in the event of strategy being single, samples will be empty, which is a suitable response.
response.Result = samples;
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(SampleAccessRequest message, IOutboundPort <GenericDataResponse <IEnvDataSample> > outputPort)
{
var response = new GenericDataResponse <IEnvDataSample>();
var user = await _userStore.GetUserById(message.UserId);
switch (message.Selector)
{
case SampleAccessRequest.SelectionCriteria.User:
if (user == null)
{
return(false);
}
response.Result = await _sampleStore.GetRangeByUser(user, message.RangeStart, message.RangeEnd);
break;
case SampleAccessRequest.SelectionCriteria.Environment:
// ensure the user has access to see this environment's data:
await _userStore.LoadEnvironments(user);
var env = user.Environments.FirstOrDefault(e => e.Id == message.EnvId);
if (env == null)
{
return(false); // env doesn't exist or user can't access it.
}
response.Result = await _sampleStore.GetRangeByEnv(env, message.RangeStart, message.RangeEnd);
break;
case SampleAccessRequest.SelectionCriteria.Pet:
// ensure the user owns the pet in question:
await _userStore.LoadPets(user);
var pet = user.Pets.FirstOrDefault(p => p.Id == message.PetId);
if (pet == null)
{
return(false); // pet doesn't exist or user can't access its data.
}
response.Result = await _sampleStore.GetRangeByPet(pet, message.RangeStart, message.RangeEnd);
break;
default:
throw new ArgumentException("Invalid selection mode", nameof(message));
}
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(BlobStorageRequest message, IOutboundPort <BlobUriResponse> outputPort)
{
// Trust user guid? Ideally only authenticated controllers are getting here.
if (message.UserId == Guid.Empty)
{
return(false);
}
// compose blob name if necessary
if (string.IsNullOrWhiteSpace(message.BlobName) && message.Mode == BlobStorageRequest.Operation.Write)
{
message.BlobName = $"{message.UserId}_{DateTime.UtcNow}_{Guid.NewGuid()}";
}
// can't read a non-existent blob.
if (string.IsNullOrWhiteSpace(message.BlobName))
{
return(false);
}
if (message.Mode == BlobStorageRequest.Operation.Write)
{
if (message.Content == null)
{
return(false); // can't write with no content.
}
await _blobStore.WriteBlob(message.Category, message.BlobName, null, message.Content);
}
var uri = await _blobStore.GetBlobReadUri(message.Category, message.BlobName, 60, 60);
// call through to blob store method.
var response = new BlobUriResponse
{
Uri = uri,
ExpiresIn = 60
};
// send back response
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(LoginRequest message, IOutboundPort <LoginResponse> outputPort)
{
var user = await _userStore.GetUserByName(message.Username);
if (user == null ||
!await _userStore.CheckPassword(user, message.Password))
{
return(false);
}
var roles = await _userStore.GetRoles(user);
var roleClaims = new List <Claim>();
roleClaims.AddRange(roles.Select(r => new Claim(ClaimTypes.Role, r)));
var identity = _claimsComposer.ComposeIdentity(user, roleClaims);
var response = new LoginResponse
{
UserName = user.Name,
AccessToken = new AccessToken
{
Token = _minter.Mint(identity, TokenType.UserAccess),
ExpiresIn = _minter.Options.TokenLifespan,
},
RefreshToken = new RefreshToken
{
Token = _minter.Mint(identity, TokenType.Refresh),
ExpiresAt = (DateTime.UtcNow + TimeSpan.FromSeconds(_minter.Options.RefreshTokenLifespan)),
IssuedTo = user.Guid,
IssuedBy = Dns.GetHostName(),
AccessCapacity = RoleValues.User
}
};
// Push the new refresh token to data store
user.RefreshTokens.Add(response.RefreshToken);
await _userStore.UpdateUser(user);
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(DataAccessRequest <IController> message, IOutboundPort <GenericDataResponse <IController> > outputPort)
{
// Load user, verify they exist.
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
// pipe on back through the port.
var response = new GenericDataResponse <IController>
{
// Load controllers (Note: userStore impls must include controller.Environments relation here)
// associated to that user.
Result = await _userStore.LoadControllers(user)
};
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(DataAccessRequest <IPet> message, IOutboundPort <GenericDataResponse <IPet> > outputPort)
{
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
await _userStore.LoadPets(user);
// Load species data - its trivial to include.
foreach (var pet in user.Pets)
{
await _petStore.LoadSpecies(pet);
}
var response = new GenericDataResponse <IPet>();
switch (message.Strategy)
{
case DataAccessRequest <IPet> .AcquisitionStrategy.All:
response.Result = user.Pets.ToImmutableList();
outputPort.Handle(response);
return(true);
case DataAccessRequest <IPet> .AcquisitionStrategy.Range:
response.Result = user.Pets.Where(message.SelectionPredicate).ToImmutableList();
outputPort.Handle(response);
return(true);
case DataAccessRequest <IPet> .AcquisitionStrategy.Single:
response.Result = new List <IPet>(new[] { user.Pets.FirstOrDefault(message.SelectionPredicate) });
outputPort.Handle(response);
return(true);
default:
throw new ArgumentOutOfRangeException(nameof(message), "Unrecognized strategy");
}
}
public async Task <bool> Handle(NewSampleRequest message, IOutboundPort <BlankResponse> outputPort)
{
// Verify that the specified user maps to the sample's environment. (e.g., can this user add samples to that
// environment?)
var user = await _userStore.GetUserById(message.UserId);
if (user != null)
{
await _userStore.LoadEnvironments(user);
}
var env = user?.Environments.FirstOrDefault(e => e.Id == message.Sample.Environment);
if (env == null)
{
return(false); // environment not owned by user or user not found.
}
await _envStore.LoadPetFor(env);
// Fill in EnvDataSample entity instance.
var sample = _entityFactory.GetSampleBuilder()
.AddHotGlassMeasurement(message.Sample.HotGlass ?? 0)
.AddHotMatMeasurement(message.Sample.HotMat ?? 0)
.AddMidGlassMeasurement(message.Sample.MidGlass ?? 0)
.AddColdGlassMeasurement(message.Sample.ColdGlass ?? 0)
.AddColdMatMeasurement(message.Sample.ColdMat ?? 0)
.SetInhabitant(env.Inhabitant)
.SetEnvironment(env)
.Build();
await _envStore.AddSample(sample);
if (env.Inhabitant != null)
{
await _petStore.UpdateLatestSample(env.Inhabitant, sample);
}
return(true);
}
public async Task <bool> Handle(ProviderGrantRequest message, IOutboundPort <LoginResponse> outputPort)
{
// Verify the user is valid
var user = await _userStore.GetUserById(message.OnBehalfOf);
if (user == null)
{
return(false);
}
// TODO: verify - in some manner - that this action request is valid beyond 'has a real user'
// Mint a data access token.
var response = new LoginResponse
{
UserName = null, // not necessary for Daemons
AccessToken = new AccessToken
{
Token = _minter.Mint(_claimsComposer.ComposeIdentity(user), TokenType.DaemonAccess),
ExpiresIn = _minter.Options.TokenLifespan
},
RefreshToken = new RefreshToken
{
Token = _minter.Mint(_claimsComposer.ComposeIdentity(user), TokenType.Refresh),
ExpiresAt = (DateTime.UtcNow + TimeSpan.FromSeconds(_minter.Options.RefreshTokenLifespan)),
IssuedTo = user.Guid,
IssuedBy = Dns.GetHostName(),
AccessCapacity = AccessLevelValues.Daemon
}
};
user.RefreshTokens.Add(response.RefreshToken);
await _userStore.UpdateUser(user);
// signal success
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(CreateUserRequest message, IOutboundPort <NewUserResponse> outputPort)
{
// ensure username, email, are unused.
if (await _userStore.GetUserByName(message.UserName) != null)
{
return(false);
}
// create a new entity instance.
var user = _entityFactory.GetUserBuilder()
.AddName(message.UserName)
.AddEmail(message.Email)
.Build();
var guid = await _userStore.CreateUser(user, message.Password);
// use backing store to persist.
NewUserResponse response = new NewUserResponse();
response.Id = (guid == Guid.Empty) ? null : guid.ToString();
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(RegisterEnvironmentRequest message, IOutboundPort <NewEntityResponse <Guid> > outputPort)
{
var response = new NewEntityResponse <Guid>();
var user = await _userStore.GetUserById(message.Owner);
if (user != null)
{
await _userStore.LoadEnvironments(user);
}
switch (message.CreateMode)
{
case RegisterEnvironmentRequest.Mode.Touch:
// Check if user already has it:
var env = user?.Environments?.FirstOrDefault(e => e.Id == message.MfgId);
// check if we have this environment already - and that its associated to user
// if not, we'll fall through to Create logic where we'll attempt creating it - erroring if already
// present.
if (env != null)
{
// This next line should be impossible - its just here to keep linting happy.
if (env.Id == null)
{
throw new Exception("Malformed input on this entity");
}
// we already have it and its associated to user.
// should be same as message.MfgId
response.Id = env.Id.Value;
break;
}
else if (user == null)
{
return(false); // nothing to do, this is a mis-use.
}
else
{
// Apparently we gotta explicitly mimic fallthrough...
goto case RegisterEnvironmentRequest.Mode.Create;
}
case RegisterEnvironmentRequest.Mode.Create:
// Environments need an initial user:
if (user == null)
{
return(false);
}
// check if it exists (blind firing a create call
// may be a pretty hard crash.)
var searchResult = await _envStore.GetById(message.MfgId);
if (searchResult != null)
{
return(false);
}
// Compose a new entry entity
var envEntity = _entityFactory.GetEnvironmentBuilder()
.SetId(message.MfgId)
.SetDescription(message.Description)
.SetModelInfo(message.Model)
.Build();
response.Id = await _envStore.Create(envEntity);
// Associate to user:
await _userStore.AddAssociationToEnv(user, envEntity);
break;
default:
throw new ArgumentOutOfRangeException(nameof(message));
}
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(NodeUpdateRequest message, IOutboundPort <GenericDataResponse <IController> > outputPort)
{
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false); // specified user doesn't exist, do nothing on their behalf.
}
var controller = await _controllerStore.GetById(message.ControllerId);
if (message.Operation == NodeUpdateRequest.Mode.Create)
{
// if the controller exists - then it was owned by another user
// if they haven't relinquished it then we don't want to re-author its owner.
if (controller?.Owner != null)
{
if (controller.Owner != user)
{
return(false);
}
}
// add controller (or a new instance) to the user:
controller ??= _entityFactory.GetControllerBuilder()
.SetId(message.ControllerId)
.Build();
await _userStore.AddAssociationToController(user, controller);
}
else if (message.Operation == NodeUpdateRequest.Mode.PeerUpdate)
{
if (controller == null)
{
return(false);
}
// call through to RegisterEnvironmentUseCase?
foreach (Guid envId in message.PeerIds)
{
// try loading the environment, update its association
var env = await _environmentStore.GetById(envId);
// Behavior here is TBD. Should environment devices just be 'whoever has posession it'
// if so, should existing data associated to that environment be dumped?
// if not, hos should we permit giving them out? etc.
// Point is, I have some system-level planning to do here, but I need *something*
// here for the time being:
if (env == null)
{
continue;
}
if (env.Controller != controller)
{
await _controllerStore.ReParentEnvironment(controller, env);
}
// for now: not creating new Env entities in this use case. Expect it to be
// handled separately
}
}
var response = new GenericDataResponse <IController>
{
Result = new[] { controller }
};
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(PetImageRequest message, IOutboundPort <BlobUriResponse> outputPort)
{
// verify that the user has access to the specified pet:
var user = await _userStore.GetUserById(message.UserId);
if (user == null)
{
return(false);
}
await _userStore.LoadPets(user);
var pet = user.Pets.FirstOrDefault(p => p.Id == message.PetId);
if (pet == null)
{
return(false);
}
// All pet images go to the image container/category.
const string category = Constants.StorageCategories.Images;
string blobName; // set based on execution path.
if (message.Update)
{
// Generate a new blob name (always) for pet images - ensures no conflict.
blobName = $"{message.UserId}_{message.PetId}_{Guid.NewGuid()}";
// upload the blob to storage.
await _blobStore.WriteBlob(category, blobName, message.MimeType, message.Content);
// associate a new blob entry to the pet
var entity = _entityFactory.GetBlobRecordBuilder()
.SetCategory(category)
.SetName(blobName)
.Build();
await _petStore.UpdateImage(pet, entity);
}
else
{
// load the current record from pet:
await _petStore.LoadImageRecord(pet);
blobName = pet.ProfileImage?.BlobName;
}
// check that there exists a blob associated to pet by this point.
if (blobName == null)
{
return(false);
}
var response = new BlobUriResponse
{
Uri = await _blobStore.GetBlobReadUri(category, blobName, 10, 30),
ExpiresIn = 10
};
outputPort.Handle(response);
return(true);
}
public async Task <bool> Handle(TokenExchangeRequest message, IOutboundPort <LoginResponse> outputPort)
{
// Verify user exists.
var user = await _store.GetUserById(Guid.Parse(message.UserId));
if (user == null)
{
return(false);
}
await _store.LoadRefreshTokens(user);
// Verify refresh token specified by message is associated to user.
var persistedToken = user.RefreshTokens
.FirstOrDefault(rt => String.Compare(rt.Token, message.EncodedRefreshToken, StringComparison.Ordinal) == 0);
if (persistedToken == null)
{
return(false);
}
var roles = await _store.GetRoles(user);
var roleClaims = new List <Claim>();
roleClaims.AddRange(roles.Select(r => new Claim(ClaimTypes.Role, r)));
// Mint a new access token based on the access capacity specified by the refresh token.
string mintedAccessToken;
if (persistedToken.AccessCapacity == AccessLevelValues.User)
{
mintedAccessToken = _minter.Mint(_claimsComposer.ComposeIdentity(user, roleClaims), TokenType.UserAccess);
}
else if (persistedToken.AccessCapacity == AccessLevelValues.Daemon)
{
mintedAccessToken = _minter.Mint(_claimsComposer.ComposeIdentity(user), TokenType.DaemonAccess);
}
else
{
// Malformed?
return(false);
}
// if a new refresh token is needed, mint a new one.
var mintedRefreshToken = message.EncodedRefreshToken;
// compose and submit response.
var response = new LoginResponse
{
UserName = (persistedToken.AccessCapacity == AccessLevelValues.User) ? user.Name: null,
AccessToken = new AccessToken
{
Token = mintedAccessToken,
ExpiresIn = _minter.Options.TokenLifespan,
},
RefreshToken = new RefreshToken
{
Token = mintedRefreshToken,
ExpiresAt = (DateTime.UtcNow + TimeSpan.FromSeconds(_minter.Options.RefreshTokenLifespan)),
IssuedTo = user.Guid,
IssuedBy = Dns.GetHostName()
}
};
// TODO: if a new refresh token was issued, then push it to data store.
outputPort.Handle(response);
return(true);
}
