Now that we have discussed the design of Librarian in detail, let's look at the project structure and source code:

$ tree               
.                                           
├── api                                     
│   ├── index.go                            
│   └── query.go                            
├── common                                  
│   ├── helpers.go                
├── Dockerfile                              
├── main.go                                  

Two directories and five files!

Now let's look at the source code for each of the files.