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Merge pull request #1252 from mesg-foundation/cosmos/service-sdk-step-2
Add service sdk cosmos version step 2
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| package servicesdk | ||
|
|
||
| import ( | ||
| "github.com/cosmos/cosmos-sdk/codec" | ||
| cosmostypes "github.com/cosmos/cosmos-sdk/types" | ||
| "github.com/mesg-foundation/engine/container" | ||
| "github.com/mesg-foundation/engine/cosmos" | ||
| "github.com/mesg-foundation/engine/database" | ||
| "github.com/mesg-foundation/engine/database/store" | ||
| "github.com/mesg-foundation/engine/hash" | ||
| "github.com/mesg-foundation/engine/service" | ||
| abci "github.com/tendermint/tendermint/abci/types" | ||
| ) | ||
|
|
||
| // Module is the service module. | ||
| type Module struct { | ||
| container container.Container | ||
| name string | ||
| cdc *codec.Codec | ||
| storeKey *cosmostypes.KVStoreKey | ||
| } | ||
|
|
||
| // NewModule returns the module of the service sdk. | ||
| func NewModule(app *cosmos.App, c container.Container) *Module { | ||
| name := "service" | ||
| module := &Module{ | ||
| container: c, | ||
| name: name, | ||
| cdc: app.Cdc(), | ||
| storeKey: cosmostypes.NewKVStoreKey(name), | ||
| } | ||
| appModuleBasic := cosmos.NewAppModuleBasic(name) | ||
| appModule := cosmos.NewAppModule(appModuleBasic, module.cdc, module.handler, module.querier) | ||
| app.RegisterModule(appModule) | ||
| app.RegisterStoreKey(module.storeKey) | ||
| return module | ||
| } | ||
|
|
||
| func (s *Module) db(request cosmostypes.Request) *database.ServiceDB { | ||
| return database.NewServiceDB(store.NewCosmosStore(request.KVStore(s.storeKey))) | ||
| } | ||
|
|
||
| func (s *Module) handler(request cosmostypes.Request, msg cosmostypes.Msg) cosmostypes.Result { | ||
| panic("to implement") | ||
| // switch msg := msg.(type) { | ||
| // case MsgCreateService: | ||
| // _, err := s.Create(request, msg.Service) | ||
| // if err != nil { | ||
| // return cosmostypes.ErrInternal(err.Error()).Result() | ||
| // } | ||
| // return cosmostypes.Result{} | ||
| // case MsgRemoveService: | ||
| // err := s.Delete(request, msg.Hash) | ||
| // if err != nil { | ||
| // return cosmostypes.ErrInternal(err.Error()).Result() | ||
| // } | ||
| // return cosmostypes.Result{} | ||
| // default: | ||
| // errmsg := fmt.Sprintf("Unrecognized service Msg type: %v", msg.Type()) | ||
| // return cosmostypes.ErrUnknownRequest(errmsg).Result() | ||
| // } | ||
| } | ||
|
|
||
| func (s *Module) querier(request cosmostypes.Request, path []string, req abci.RequestQuery) (interface{}, error) { | ||
| panic("to implement") | ||
| // switch path[0] { | ||
| // case "get": | ||
| // hash, err := hash.Decode(path[1]) | ||
| // if err != nil { | ||
| // return nil, err | ||
| // } | ||
| // return s.Get(request, hash) | ||
| // case "list": | ||
| // return s.All(request) | ||
| // default: | ||
| // return nil, fmt.Errorf("unknown service query endpoint %q", path[0]) | ||
| // } | ||
| } | ||
|
|
||
| // Create creates a new service from definition. | ||
| func (s *Module) Create(request cosmostypes.Request, srv *service.Service) (*service.Service, error) { | ||
| return create(s.container, s.db(request), srv) | ||
| } | ||
|
|
||
| // Delete deletes the service by hash. | ||
| func (s *Module) Delete(request cosmostypes.Request, hash hash.Hash) error { | ||
| return s.db(request).Delete(hash) | ||
| } | ||
|
|
||
| // Get returns the service that matches given hash. | ||
| func (s *Module) Get(request cosmostypes.Request, hash hash.Hash) (*service.Service, error) { | ||
| return s.db(request).Get(hash) | ||
| } | ||
|
|
||
| // List returns all services. | ||
| func (s *Module) List(request cosmostypes.Request) ([]*service.Service, error) { | ||
| return s.db(request).All() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| package servicesdk | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/mesg-foundation/engine/cosmos" | ||
| "github.com/mesg-foundation/engine/hash" | ||
| "github.com/mesg-foundation/engine/service" | ||
| ) | ||
|
|
||
| type sdk struct { | ||
| app *cosmos.App | ||
| } | ||
|
|
||
| // NewSDK returns the service sdk. | ||
| func NewSDK(app *cosmos.App) Service { | ||
| sdk := &sdk{ | ||
| app: app, | ||
| } | ||
| return sdk | ||
| } | ||
|
|
||
| // Create creates a new service from definition. | ||
| func (s *sdk) Create(srv *service.Service) (*service.Service, error) { | ||
| return nil, fmt.Errorf("create not implemented") | ||
| } | ||
|
|
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| // Delete deletes the service by hash. | ||
| func (s *sdk) Delete(hash hash.Hash) error { | ||
| return fmt.Errorf("delete not implemented") | ||
| } | ||
|
|
||
| // Get returns the service that matches given hash. | ||
| func (s *sdk) Get(hash hash.Hash) (*service.Service, error) { | ||
| return nil, fmt.Errorf("get not implemented") | ||
| } | ||
|
|
||
| // List returns all services. | ||
| func (s *sdk) List() ([]*service.Service, error) { | ||
| return nil, fmt.Errorf("list not implemented") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package servicesdk | ||
|
|
||
| import ( | ||
| "errors" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "os" | ||
|
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||
| "github.com/docker/docker/pkg/archive" | ||
| "github.com/mesg-foundation/engine/container" | ||
| "github.com/mesg-foundation/engine/database" | ||
| "github.com/mesg-foundation/engine/hash" | ||
| "github.com/mesg-foundation/engine/hash/dirhash" | ||
| "github.com/mesg-foundation/engine/service" | ||
| "github.com/mesg-foundation/engine/service/validator" | ||
| ) | ||
|
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||
| func create(container container.Container, db *database.ServiceDB, srv *service.Service) (*service.Service, error) { | ||
| if srv.Configuration == nil { | ||
| srv.Configuration = &service.Configuration{} | ||
| } | ||
| // download and untar service context into path. | ||
| path, err := ioutil.TempDir("", "mesg") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| defer os.RemoveAll(path) | ||
|
|
||
| resp, err := http.Get("http://ipfs.app.mesg.com:8080/ipfs/" + srv.Source) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if resp.StatusCode != 200 { | ||
| return nil, errors.New("service's source code is not reachable") | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| if err := archive.Untar(resp.Body, path, nil); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // calculate and apply hash to service. | ||
| dh := dirhash.New(path) | ||
| h, err := dh.Sum(hash.Dump(srv)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| srv.Hash = hash.Hash(h) | ||
|
|
||
| // check if service already exists. | ||
| if _, err := db.Get(srv.Hash); err == nil { | ||
| return nil, &AlreadyExistsError{Hash: srv.Hash} | ||
| } | ||
|
|
||
| // build service's Docker image. | ||
| _, err = container.Build(path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| // TODO: the following test should be moved in New function | ||
| if srv.Sid == "" { | ||
| // make sure that sid doesn't have the same length with id. | ||
| srv.Sid = "_" + srv.Hash.String() | ||
| } | ||
|
|
||
| if err := validator.ValidateService(srv); err != nil { | ||
| return nil, err | ||
| } | ||
| return srv, db.Save(srv) | ||
| } |