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- package v1
- import (
- "bytes"
- "encoding/json"
- "fmt"
- "net/http"
- "strconv"
- "devt.de/krotik/eliasdb/api"
- "devt.de/krotik/eliasdb/storage"
- )
- const StorageSuffixBlob = ".blob"
- const EndpointBlob = api.APIRoot + APIv1 + "/blob/"
- func BlobEndpointInst() api.RestEndpointHandler {
- return &blobEndpoint{}
- }
- type blobEndpoint struct {
- *api.DefaultEndpointHandler
- }
- func (be *blobEndpoint) HandleGET(w http.ResponseWriter, r *http.Request, resources []string) {
- var res interface{}
- var ret []byte
-
- if !checkResources(w, resources, 2, 2, "Need a partition and a specific data ID") {
- return
- }
- loc, err := strconv.ParseUint(resources[1], 10, 64)
- if err != nil {
- http.Error(w, fmt.Sprint("Could not decode data ID: ", err.Error()),
- http.StatusBadRequest)
- return
- }
- sm := api.GS.StorageManager(resources[0]+StorageSuffixBlob, false)
- if sm != nil {
- res, err = sm.FetchCached(loc)
- if err == storage.ErrNotInCache {
- err = sm.Fetch(loc, &ret)
- } else if err == nil && res != nil {
- ret = res.([]byte)
- }
- }
-
- w.Header().Set("content-type", "application/octet-stream")
- w.Write(ret)
- }
- func (be *blobEndpoint) HandlePOST(w http.ResponseWriter, r *http.Request, resources []string) {
- var buf bytes.Buffer
-
- if !checkResources(w, resources, 1, 1, "Need a partition") {
- return
- }
- sm := api.GS.StorageManager(resources[0]+StorageSuffixBlob, true)
-
- buf.ReadFrom(r.Body)
- loc, err := sm.Insert(buf.Bytes())
- if err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- sm.Flush()
-
- w.Header().Set("content-type", "application/json; charset=utf-8")
- ret := json.NewEncoder(w)
- ret.Encode(map[string]interface{}{
- "id": loc,
- })
- }
- func (be *blobEndpoint) HandlePUT(w http.ResponseWriter, r *http.Request, resources []string) {
- var buf bytes.Buffer
-
- if !checkResources(w, resources, 2, 2, "Need a partition and a specific data ID") {
- return
- }
- loc, err := strconv.ParseUint(resources[1], 10, 64)
- if err != nil {
- http.Error(w, fmt.Sprint("Could not decode data ID: ", err.Error()), http.StatusBadRequest)
- return
- }
- sm := api.GS.StorageManager(resources[0]+StorageSuffixBlob, false)
- if sm != nil {
-
- buf.ReadFrom(r.Body)
- if err := sm.Update(loc, buf.Bytes()); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- sm.Flush()
- }
- }
- func (be *blobEndpoint) HandleDELETE(w http.ResponseWriter, r *http.Request, resources []string) {
-
- if !checkResources(w, resources, 2, 2, "Need a partition and a specific data ID") {
- return
- }
- loc, err := strconv.ParseUint(resources[1], 10, 64)
- if err != nil {
- http.Error(w, fmt.Sprint("Could not decode data ID: ", err.Error()), http.StatusBadRequest)
- return
- }
- sm := api.GS.StorageManager(resources[0]+StorageSuffixBlob, false)
- if sm != nil {
- if err := sm.Free(loc); err != nil {
- http.Error(w, err.Error(), http.StatusInternalServerError)
- return
- }
- sm.Flush()
- }
- }
- func (be *blobEndpoint) SwaggerDefs(s map[string]interface{}) {
- idParams := []map[string]interface{}{
- {
- "name": "id",
- "in": "path",
- "description": "ID of the binary blob.",
- "required": true,
- "type": "string",
- },
- }
- partitionParams := []map[string]interface{}{
- {
- "name": "partition",
- "in": "path",
- "description": "Partition to select.",
- "required": true,
- "type": "string",
- },
- }
- binaryData := []map[string]interface{}{
- {
- "name": "data",
- "in": "body",
- "description": "The data to store.",
- "required": true,
- "schema": map[string]interface{}{
- "description": "A blob of binary data.",
- },
- },
- }
- s["paths"].(map[string]interface{})["/v1/blob/{partition}"] = map[string]interface{}{
- "post": map[string]interface{}{
- "summary": "Create a binary blob of data.",
- "description": "The blob endpoint can be used to store binary data. Its location will be automatically allocated.",
- "consumes": []string{
- "application/octet-stream",
- },
- "produces": []string{
- "text/plain",
- "application/json",
- },
- "parameters": append(binaryData, partitionParams...),
- "responses": map[string]interface{}{
- "200": map[string]interface{}{
- "description": "The operation was successful.",
- "schema": map[string]interface{}{
- "type": "object",
- "properties": map[string]interface{}{
- "id": map[string]interface{}{
- "description": "The data ID which can be used to lookup the data.",
- "type": "number",
- },
- },
- },
- },
- "default": map[string]interface{}{
- "description": "Error response",
- "schema": map[string]interface{}{
- "$ref": "#/definitions/Error",
- },
- },
- },
- },
- }
- s["paths"].(map[string]interface{})["/v1/blob/{partition}/{id}"] = map[string]interface{}{
- "get": map[string]interface{}{
- "summary": "Retrieve a binary blob of data.",
- "description": "The blob endpoint can be used to retrieve binary data from a specific location.",
- "produces": []string{
- "text/plain",
- "application/octet-stream",
- },
- "parameters": append(idParams, partitionParams...),
- "responses": map[string]interface{}{
- "200": map[string]interface{}{
- "description": "The requested binary blob.",
- },
- "default": map[string]interface{}{
- "description": "Error response",
- "schema": map[string]interface{}{
- "$ref": "#/definitions/Error",
- },
- },
- },
- },
- "put": map[string]interface{}{
- "summary": "Update a binary blob of data.",
- "description": "The blob endpoint can be used to update binary data at a specific location.",
- "produces": []string{
- "text/plain",
- },
- "parameters": append(idParams, partitionParams...),
- "responses": map[string]interface{}{
- "200": map[string]interface{}{
- "description": "The operation was successful.",
- },
- "default": map[string]interface{}{
- "description": "Error response",
- "schema": map[string]interface{}{
- "$ref": "#/definitions/Error",
- },
- },
- },
- },
- "delete": map[string]interface{}{
- "summary": "Remove a binary blob of data.",
- "description": "The blob endpoint can be used to remove binary data from a specific location.",
- "produces": []string{
- "text/plain",
- },
- "parameters": append(idParams, partitionParams...),
- "responses": map[string]interface{}{
- "200": map[string]interface{}{
- "description": "The operation was successful.",
- },
- "default": map[string]interface{}{
- "description": "Error response",
- "schema": map[string]interface{}{
- "$ref": "#/definitions/Error",
- },
- },
- },
- },
- }
-
- s["definitions"].(map[string]interface{})["Error"] = map[string]interface{}{
- "description": "A human readable error mesage.",
- "type": "string",
- }
- }
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