How do I make the jenkins API return more builds?

Question

I have a script that pulls the artifacts from a jenkins job and installs it on our hardware test system. Now, today I need to downgrade to a pretty old version. Unfortunately, the jenkins API only returns the last few builds.

I use the jenkinsapi python API. It fails as follows:

/usr/local/lib/python2.7/dist-packages/jenkinsapi-0.1.6-py2.7.egg/jenkinsapi/job.pyc in get_build(self, buildnumber)
    177     def get_build( self, buildnumber ):
    178         assert type(buildnumber) == int
--> 179         url = self.get_build_dict()[ buildnumber ]
    180         return Build( url, buildnumber, job=self )
    181 

The python API hits the the url http://jenkins/job/job-name/api/python/. If I do that myself, then I get the following response:

{"actions":[{},{},{},{},{},{},{}],
 "description":"text",
 "displayName":"job-name",
 "displayNameOrNull":None,
 "name":"job-name",
 "url":"http://jenkins/job/job-name/",
 "buildable":True,
 "builds":[
     {"number":437,"url":"http://jenkins/job/job-name/437/"},
     {"number":436,"url":"http://jenkins/job/job-name/436/"},
     {"number":435,"url":"http://jenkins/job/job-name/435/"},
     {"number":434,"url":"http://jenkins/job/job-name/434/"},
     {"number":433,"url":"http://jenkins/job/job-name/433/"},
     {"number":432,"url":"http://jenkins/job/job-name/432/"},
     {"number":431,"url":"http://jenkins/job/job-name/431/"},
     {"number":430,"url":"http://jenkins/job/job-name/430/"},
     {"number":429,"url":"http://jenkins/job/job-name/429/"},
     {"number":428,"url":"http://jenkins/job/job-name/428/"},
     {"number":427,"url":"http://jenkins/job/job-name/427/"},
     {"number":426,"url":"http://jenkins/job/job-name/426/"},
     {"number":425,"url":"http://jenkins/job/job-name/425/"},
     {"number":424,"url":"http://jenkins/job/job-name/424/"},
     {"number":423,"url":"http://jenkins/job/job-name/423/"}],
"color":"yellow_anime",
"firstBuild": {"number":311,"url":"http://jenkins/job/job-name/311/"},
"healthReport":[
                {"description":"Test Result: 0 tests failing out of a total of 3 tests.","iconUrl":"health-80plus.png","score":100},
                {"description":"Build stability: No recent builds failed.","iconUrl":"health-80plus.png","score":100}],
"inQueue":False,
"keepDependencies":False,
"lastBuild":{"number":438,"url":"http://jenkins/job/job-name/438/"},
"lastCompletedBuild":{"number":437,"url":"http://jenkins/job/job-name/437/"},
"lastFailedBuild":{"number":386,"url":"http://jenkins/job/job-name/386/"},
"lastStableBuild":{"number":424,"url":"http://jenkins/job/job-name/424/"},
"lastSuccessfulBuild":{"number":437,"url":"http://jenkins/job/job-name/437/"},
"lastUnstableBuild":{"number":437,"url":"http://jenkins/job/job-name/437/"},
"lastUnsuccessfulBuild":{"number":437,"url":"http://jenkins/job/job-name/437/"},
"nextBuildNumber":439,
"property":[],
"queueItem":None,
"concurrentBuild":False,
"downstreamProjects":[],
"scm":{},
"upstreamProjects":[]}

Now, I wanted to get job number 315. How do I do this?

Answer 1

I ended up using the following workaround:

try:
   build=job.get_build(build_no)
except KeyError:
   build=jenkinsapi.build.Build('%s%d/' % (job.baseurl, build_no), build_no, job=job)

It's not pretty, but it works.