func (s SubnetChecker) CheckSubnets(manifestFilename string) (bool, error) {
networks, err := manifests.ReadNetworksFromManifest(manifestFilename)
if err != nil {
return false, err
}
manifestSubnetMap := mapSubnets(subnetsFromManifestNetworks(networks))
session, err := s.awsClient.Session()
if err != nil {
return false, err
}
awsSubnets, err := s.awsClient.FetchSubnets(session, subnetIdsFromSubnets(manifestSubnetMap))
if err != nil {
return false, err
}
awsSubnetMap := mapSubnets(awsSubnets)
for id, manifestSubnet := range manifestSubnetMap {
awsSubnet, ok := awsSubnetMap[id]
if !ok {
return false, nil
}
if awsSubnet.CIDRBlock != manifestSubnet.CIDRBlock {
return false, nil
}
}
return true, nil
}
_, err = manifests.ReadManifest(manifestFile)
Expect(err.Error()).To(ContainSubstring("mapping values are not allowed in this context"))
})
It("returns an error when the file doesn't exist", func() {
_, err = manifests.ReadManifest("/nonexistent/file")
Expect(err.Error()).To(ContainSubstring("no such file or directory"))
})
})
})
Describe("ReadNetworksFromManifest", func() {
It("reads the network information from the given manifest", func() {
writeManifestWithBody(manifestsDirectory, "manifest-with-subnets.yml", manifestWithSubnets)
networks, err := manifests.ReadNetworksFromManifest(filepath.Join(manifestsDirectory, "manifest-with-subnets.yml"))
Expect(err).NotTo(HaveOccurred())
Expect(networks[0].Subnets[0].CloudProperties.Subnet).To(Equal("subnet-1"))
Expect(networks[0].Subnets[0].Range).To(Equal("10.0.20.0/24"))
Expect(networks[1].Subnets[0].CloudProperties.Subnet).To(Equal("subnet-2"))
Expect(networks[1].Subnets[0].Range).To(Equal("10.1.20.0/24"))
})
Context("failure cases", func() {
It("returns an error when given invalid yaml", func() {
manifestFile := filepath.Join(manifestsDirectory, "invalid_manifest.yml")
err := ioutil.WriteFile(manifestFile, []byte("not: valid: yaml:"), os.ModePerm)
Expect(err).NotTo(HaveOccurred())