First pass at using zipped libs to deal with aws size limits. fixes #3

Author: dschep

index.js

@@ -6,6 +6,7 @@ const _ = require('lodash');
 const path = require('path');
 const fse = require('fs-extra');
 const child_process = require('child_process');
+const {EasyZip} = require('easy-zip');
 
 BbPromise.promisifyAll(fse);
 
@@ -18,7 +19,7 @@ class ServerlessPythonRequirements {
       path.join(this.serverless.config.servicePath, 'requirements.py'));
   };
 
-  packRequirements() {
+  installRequirements() {
     if (!fse.existsSync(path.join(this.serverless.config.servicePath, 'requirements.txt'))) {
       return BbPromise.resolve();
     }
@@ -52,8 +53,32 @@ class ServerlessPythonRequirements {
     });
   };
 
+  packRequirements() {
+    return this.installRequirements().then(() => {
+      return new BbPromise((resolve, reject) => {
+        if (this.serverless.service.custom && this.serverless.service.custom.zipImport) {
+          const zip = new EasyZip();
+          zip.zipFolder('.requirements', (err) => {
+            if (err) {
+              reject();
+              return;
+            }
+            zip.writeToFile('.requirements.zip');
+            fse.remove('.requirements', (err) => err?reject():resolve());
+          }, {rootFolder: '.'});
+        } else {
+          resolve();
+        }
+      });
+    });
+  }
+
   cleanup() {
-    const artifacts = ['requirements.py', '.requirements'];
+    const artifacts = ['requirements.py'];
+    if (this.serverless.service.custom && this.serverless.service.custom.zipImport)
+      artifacts.push('.requirements.zip')
+    else
+      artifacts.push('.requirements')
 
     return BbPromise.all(_.map(artifacts, (artifact) =>
       fse.removeAsync(path.join(this.serverless.config.servicePath, artifact))));;

package.json

@@ -40,6 +40,7 @@
   "devDependencies": {},
   "dependencies": {
     "bluebird": "^3.0.6",
+    "easy-zip": "github:owenchong/easy-zip",
     "fs-extra": "^0.26.7",
     "lodash": "^4.13.1"
   }

requirements.py

@@ -3,9 +3,12 @@
 
 
 requirements = os.path.join(
-    os.path.split(__file__)[0],
-    '.requirements',
-)
+    os.path.split(__file__)[0], '.requirements')
+zip_requirements = os.path.join(
+    os.path.split(__file__)[0], '.requirements.zip')
 
-if requirements  not in sys.path:
+if requirements not in sys.path:
     sys.path.append(requirements)
+
+if zip_requirements not in sys.path:
+    sys.path.append(zip_requirements)