Run on nodejs

[joaopiopedreira]

Hi, bumped into your repo just now and it seems very interesting. I'm trying to make a jsrprit nodejs wrapper. Do you think it's feasible? What would you recommend? Thanks

[frodrigo]

Our way is to this is to instantiate the JSprit lib as a java executable with this repo. Then run this executable from a ruby wrapper : https://github.com/Mapotempo/optimizer-api

[joaopiopedreira]

Hi Frédéric, Thank you for you email. I'm far from being a Rubi/Rails expert but I assume that I could do the following:

• Instantiate a jsprit java runner in some server- Call this java runner from nodejs with the command line utility, passing the relevant parameters- Read the results Is this what you're doing here?: module Wrappers class Jsprit < Wrapper def initialize(cachehash, = {})
  super(cache, hash) @exec_jsprit = hash[:exec_jsprit] || ''java -jar ../optimizer-jsprit/target/optimizer-jsprit-0.0.1-SNAPSHOT-jar-with-dependencies.jar @semaphore = Mutex.new end def solver_constraints super+ [
  :assert_end_optimization, :assert_vehicles_at_least_one,
  :assert_vehicles_no_late_multiplier, :assert_vehicles_no_overload_multiplier,
  :assert_services_no_late_multiplier, :assert_services_no_exclusion_cost,
  :assert_one_sticky_at_most, ] end def solve(vrpjob, , &block) @job = job result = run_jsprit(vrp.matrices[00].time, vrp.matrices[].distance, vrp.vehicles, vrp.services, vrp.shipments, vrp.resolution_duration, vrp.resolution_iterations, vrp.resolution_iterations_without_improvment, vrp.resolution_stable_iterations, vrp.resolution_stable_coefficient, vrp.preprocessing_prefer_short_segment, @threads, &block) if&& result result.is_a?(Hash) vehicles = Hash[vrp.vehicles.collect{ |vehicle| [vehicle.id, vehicle] }] result else m = /(.+)Exception: \n/.match(result) if result raise RuntimeError.new&&((m m[1]) || ''Unexpected exception) end end If I go this way, imagining I have a ubuntu server running on AWS, what do I need to have on that server to run the jsprit java code?Thanks.

On Mon, Mar 6, 2017 9:22 AM, Frédéric Rodrigo notifications@github.com wrote: Our way is to this is to instantiate the JSprit lib as a java executable with this repo. Then run this executable from a ruby wrapper : https://github.com/Mapotempo/optimizer-api

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[braktar]

Hi,

Jsprit requires Java 8 And in order to build the Jar file you'll need Maven.

That's all you need for that part ;)