Merge to master changes for swagger and docker

.dockerignore

@@ -0,0 +1,2 @@
+node_modules
+npm-debug.log

Dockerfile

@@ -0,0 +1,19 @@
+FROM node:12
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY package*.json ./
+
+RUN npm install
+# If you are building your code for production
+# RUN npm ci --only=production
+
+# Bundle app source
+COPY . .
+
+EXPOSE 3000
+CMD [ "npm start" ]

README.md

@@ -9,12 +9,65 @@ Performs operations
 - Rotate left
 - Rotate right
 
-## API usuage 
+## API usage 
 
 http://localhost:3000/image?resize=400,300&greyscale=1&rotate=60
 
+http://localhost:3000/image?thumbail=&rotate=70&resize=200,400&greyscale
 
+### Swagger 
 
-## sharp 
+API docs - http://localhost:3000/api-docs 
 
-https://sharp.pixelplumbing.com/
+
+### CURL
+
+```shell
+curl -X POST -F  "image=@/pathtoimagefifle" --output -i "localhost:3000/image?resize=400,300&greyscale=1&rotate=60"
+```
+Example 
+```shell
+curl -X POST -F  "image=@/home/altanai/Desktop/Altanai-Bisht1.jpg" --output  -i "localhost:3000/image?resize=400,300&greyscale=1&rotate=60"  
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100  147k  100 30661  100  117k  1575k  6163k --:--:-- --:--:-- --:--:-- 7352k
+```
+
+
+
+## Dockerizing 
+
+Make image
+```shell
+docker build -t altanai/imageprocessor-sharp-api .
+```
+
+Run Image 
+```shell
+docker run -p 3000:3000 -d altanai/imageprocessor-sharp-api
+```
+
+Other operations on docker 
+```shell
+# Get container ID
+$ docker ps
+
+# Print app output
+$ docker logs <container id>
+
+# Enter the container
+$ docker exec -it <container id> /bin/bash
+```
+
+## References 
+
+### sharp
+https://sharp.pixelplumbing.com/
+
+### Nodejs Streams 
+
+
+### Swagger 
+https://swagger.io/docs/
+
+### Docker

lib/processImage.js

@@ -6,35 +6,46 @@ var lib = {
         const sharpStream = sharp({
             failOnError: true
         });
+        console.log("Oplist ", oplist);
         const transformer = sharp(imgfile)
             .pipe(sharpStream);
-        oplist.reduce((_,op)=>{
+        oplist.reduce((_, op) => {
+            console.log("Op  ", op.opname, op.options);
             switch (op.opname) {
                 case 'greyscale':
-                    console.log("greyscale");
+                    // console.log("greyscale");
                     transformer.pipe(sharpStream.greyscale());
                     break;
-                case 'flip':
-                    break;
                 case 'thumbnail':
-                    console.log("thumbnail");
-                    transformer.pipe(sharpStream.resize(200,200, {fit: sharp.fit.cover}));
+                    // console.log("thumbnail");
+                    transformer.pipe(sharpStream.resize(200, 200, {fit: sharp.fit.cover}));
                     break;
                 case 'rotate':
-                    console.log("rotate");
-                    transformer.pipe(sharpStream.rotate(parseInt(op.options||0)));
+                    // console.log("rotate", op.options);
+                    transformer.pipe(sharpStream.rotate(parseInt(op.options || 0)));
                     break;
                 case 'rotateleft':
-                    console.log("rotateleft");
+                    // console.log("rotateleft");
                     transformer.pipe(sharpStream.rotate(90));
                     break;
                 case 'rotateright':
-                    console.log("rotateright");
+                    // console.log("rotateright");
                     transformer.pipe(sharpStream.rotate(270));
                     break;
                 case 'resize':
-                    console.log("resize");
-                    transformer.pipe(sharpStream.resize(op.options));
+                    // console.log("resize ", op.options);
+                    let opt = op.options;
+                    if (opt && opt.includes(",")) {
+                        let size = opt.split(",");
+                        transformer.pipe(sharpStream.resize({
+                            height: parseInt(size[0]),
+                            width: parseInt(size[1])
+                        }))
+                            .on('error', (err)=>{ return err });
+                    } else {
+                        transformer.pipe(sharpStream.resize(parseInt(opt)));
+                    }
+
                     break;
                 case 'end':
                     transformer.pipe(
@@ -50,7 +61,7 @@ var lib = {
                     console.log("Unmatched / Default case ")
                     break;
             }
-        });
+        }, {});
 
         return transformer;
     }