Setup instructions

Setting up Metaprot locally

Step-by-step instructions

Assumptions

1. You are using IntelliJ or another similar IDE.
2. You have forked a copy of the project locally.
3. You have access to a command line terminal (Windows PowerShell is OK, but instructions will assume bash)
4. You do not have R, Rserve, or Mongo installed. If you do, skip the appropriate steps.

---

Steps:

1. Create/modify an application.properties file at src/main/resources/application.properties. Fields must include at least:

aws.access.key=... aws.secret.access.key=... aws.s3.bucketName=... aws.dynamo.endpoint=...

spring.data.mongodb.host=localhost spring.data.mongodb.port=27017 db.mongo.dbname=metaprot

task.scheduler.rserve.ports=... app.r.script.location=@r-script-location@ # from the Maven profile we set up

2. Create a Maven profile either in `pom.xml` (project root) or a `settings.xml` file located at `~/.m2/`, with the variable `r-script-location`. It should look something like:

    ```xml
<profile>
   <id>profile-name</id>
   <properties>
      <r-script-location>src/main/resources/</r-script-location>
   </properties>
</profile>

3. At this point you should be able to run the Metaprot application from your IDE; do so, and as a test, head over to localhost:<port>/metabolite-analysis to check that the Web application itself is working.

4. Install Mongo (TEMPORARY). You can use Homebrew if on OSX, otherwise see the official mongo docs. Any version above 2.0 should work just fine.

5. Start a Mongo service. OSX and Linux can do so by typing bash mongod, possibly with sudo.

6. Install R. Again, OSX users can use Homebrew, else consult the official R docs. Building from source is OK. If not already, add the path to R to your system PATH.

7. Install Rserve. If on Windows, you can simply run an R shell by typing R in the PowerShell, and using R's built in package manager to do so. Simply type install.packages("Rserve"). This method may work on OSX and Linux systems as well, but a guaranteed method is to build and install Rserve from source; see instructions.

8. Run an Rserve server process. Rserve bypasses the single-threaded limitation of R by exposing R as a TCP service. This way, multiple "servers" can exist and you can use any of them to run arbitrary R commands. Open a R shell if you have not already (type R in terminal), and run:

library(Rserve) Rserve(args="--no-save --RS-port ")

where `<port>` refers to the port(s) you specified in `application.properties` in step 1.

9. Now both your Mongo and Rserve processes are running. Head over to your IDE and edit your run configurations. For IntelliJ, this is at `Run->Edit Configurations...`. We need to tell your local version of Metaprot about where to find R, so add as an Environment Variable: `R_HOME=</path/to/R>`. Usually the value of `</path/to/R>` can be found by executing `R.home()` in the R shell. However, this can be manually found by looking at where the R executable file is (e.g. in Windows this is usually in `.../bin`. Save your changes.

10. Now you should be able to run your program in your IDE, via embedded Tomcat.