Add support for helm templates

Add support for evaluating helm templates
The interface provides a way to get a map which
contains a mapping from kubernetes kind to the
corresponding yaml file that defines a resource
of that kind. This map is then provided to the
instantiation code at instantiation time to create
in the kubernetes cluster.
P5: Use filepath.join instead of strings.join
P9: rebase with new folder structure
P10: moved the helm code into its own package.
P12: Add unit tests
     update the go.mod to use latest docker version

Issue-ID: MULTICLOUD-291
Change-Id: Ie75f5c616cc0cdc3e0ace49ff2c2f6c356a4c0d1
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

4 files changed, 665 insertions, 13 deletions

diff --git a/src/k8splugin/go.mod b/src/k8splugin/go.mod
index 1e7115dc..606eb4da 100644
--- a/src/k8splugin/go.mod
+++ b/src/k8splugin/go.mod
@@ -1,55 +1,90 @@
 module k8splugin
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
+	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/MakeNowJust/heredoc v0.0.0-20171113091838-e9091a26100e // indirect
+	github.com/Masterminds/semver v1.4.2 // indirect
+	github.com/Masterminds/sprig v2.17.1+incompatible // indirect
+	github.com/aokoli/goutils v1.1.0 // indirect
+	github.com/chai2010/gettext-go v0.0.0-20170215093142-bf70f2a70fb1 // indirect
+	github.com/cyphar/filepath-securejoin v0.2.2 // indirect
+	github.com/docker/distribution v2.7.0+incompatible // indirect
+	github.com/docker/docker v0.7.3-0.20190312165151-258edd715d46 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-units v0.3.3 // indirect
+	github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c // indirect
+	github.com/emicklei/go-restful v2.8.0+incompatible // indirect
+	github.com/evanphx/json-patch v4.1.0+incompatible // indirect
+	github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d // indirect
+	github.com/fatih/camelcase v1.0.0 // indirect
 	github.com/ghodss/yaml v1.0.0
+	github.com/go-openapi/spec v0.18.0 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
+	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/gogo/protobuf v1.0.0 // indirect
-	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect
-	github.com/golang/protobuf v1.2.0 // indirect
+	github.com/golang/groupcache v0.0.0-20181024230925-c65c006176ff // indirect
 	github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect
 	github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c // indirect
 	github.com/google/go-cmp v0.2.0 // indirect
 	github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf // indirect
+	github.com/google/uuid v1.1.0 // indirect
 	github.com/googleapis/gnostic v0.2.0 // indirect
 	github.com/gorilla/context v1.1.1 // indirect
 	github.com/gorilla/handlers v1.3.0
 	github.com/gorilla/mux v1.6.2
 	github.com/gregjones/httpcache v0.0.0-20181110185634-c63ab54fda8f // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
 	github.com/hashicorp/consul v1.4.0
 	github.com/hashicorp/go-cleanhttp v0.5.0 // indirect
 	github.com/hashicorp/go-rootcerts v0.0.0-20160503143440-6bb64b370b90 // indirect
 	github.com/hashicorp/go-uuid v1.0.0
+	github.com/hashicorp/golang-lru v0.5.0 // indirect
 	github.com/hashicorp/serf v0.8.1 // indirect
 	github.com/howeyc/gopass v0.0.0-20170109162249-bf9dde6d0d2c // indirect
+	github.com/huandu/xstrings v1.2.0 // indirect
 	github.com/imdario/mergo v0.3.5 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.5 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/mitchellh/go-wordwrap v1.0.0 // indirect
 	github.com/mitchellh/mapstructure v1.1.2 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v0.0.0-20180228065516-1df9eeb2bb81 // indirect
 	github.com/mongodb/mongo-go-driver v0.2.0
+	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
+	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/pkg/errors v0.8.0
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v0.9.2 // indirect
+	github.com/russross/blackfriday v1.5.2 // indirect
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
+	github.com/sirupsen/logrus v1.4.0 // indirect
+	github.com/spf13/cobra v0.0.3 // indirect
 	github.com/spf13/pflag v1.0.1 // indirect
-	github.com/stretchr/testify v1.2.2 // indirect
+	github.com/technosophos/moniker v0.0.0-20180509230615-a5dbd03a2245 // indirect
 	github.com/tidwall/pretty v0.0.0-20180105212114-65a9db5fad51 // indirect
 	github.com/xdg/scram v0.0.0-20180814205039-7eeb5667e42c // indirect
 	github.com/xdg/stringprep v1.0.0 // indirect
-	golang.org/x/crypto v0.0.0-20180608092829-8ac0e0d97ce4 // indirect
-	golang.org/x/net v0.0.0-20180724234803-3673e40ba225
+	golang.org/x/net v0.0.0-20181201002055-351d144fa1fc
 	golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890 // indirect
-	golang.org/x/sync v0.0.0-20181108010431-42b317875d0f // indirect
-	golang.org/x/sys v0.0.0-20180611080425-bff228c7b664 // indirect
-	golang.org/x/text v0.3.0 // indirect
 	golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 // indirect
+	google.golang.org/grpc v1.17.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/square/go-jose.v2 v2.2.2 // indirect
 	gopkg.in/yaml.v2 v2.2.1
-	k8s.io/api v0.0.0-20181130031204-d04500c8c3dd
-	k8s.io/apimachinery v0.0.0-20181215012845-4d029f033399
+	k8s.io/api v0.0.0-20181126151915-b503174bad59
+	k8s.io/apiextensions-apiserver v0.0.0-20181126155829-0cd23ebeb688 // indirect
+	k8s.io/apimachinery v0.0.0-20181126123746-eddba98df674
+	k8s.io/apiserver v0.0.0-20181126153457-92fdef3a232a // indirect
+	k8s.io/cli-runtime v0.0.0-20190107235426-31214e12222d // indirect
 	k8s.io/client-go v2.0.0-alpha.0.0.20181126152608-d082d5923d3c+incompatible
+	k8s.io/helm v2.12.2+incompatible
 	k8s.io/klog v0.1.0 // indirect
 	k8s.io/kube-openapi v0.0.0-20181114233023-0317810137be // indirect
-	k8s.io/utils v0.0.0-20181102055113-1bd4f387aa67
+	k8s.io/kubernetes v1.12.3 // indirect
+	k8s.io/utils v0.0.0-20181221173059-8a16e7dd8fb6
+	sigs.k8s.io/kustomize v1.0.11 // indirect
 	sigs.k8s.io/yaml v1.1.0 // indirect
+	vbom.ml/util v0.0.0-20180919145318-efcd4e0f9787 // indirect
 )
diff --git a/src/k8splugin/go.sum b/src/k8splugin/go.sum
index dbc0a60a..179c7784 100644
--- a/src/k8splugin/go.sum
+++ b/src/k8splugin/go.sum
@@ -1,13 +1,72 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
+github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/MakeNowJust/heredoc v0.0.0-20171113091838-e9091a26100e h1:eb0Pzkt15Bm7f2FFYv7sjY7NPFi3cPkS3tv1CcrFBWA=
+github.com/MakeNowJust/heredoc v0.0.0-20171113091838-e9091a26100e/go.mod h1:64YHyfSL2R96J44Nlwm39UHepQbyR5q10x7iYa1ks2E=
+github.com/Masterminds/semver v1.4.2 h1:WBLTQ37jOCzSLtXNdoo8bNM8876KhNqOKvrlGITgsTc=
+github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/sprig v2.17.1+incompatible h1:PChbxFGKTWsg9IWh+pSZRCSj3zQkVpL6Hd9uWsFwxtc=
+github.com/Masterminds/sprig v2.17.1+incompatible/go.mod h1:y6hNFY5UBTIWBxnzTeuNhlNS5hqE0NB0E6fgfo2Br3o=
+github.com/PuerkitoBio/purell v1.1.0 h1:rmGxhojJlM0tuKtfdvliR84CFHljx9ag64t2xmVkjK4=
+github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/aokoli/goutils v1.1.0 h1:jy4ghdcYvs5EIoGssZNslIASX5m+KNMfyyKvRQ0TEVE=
+github.com/aokoli/goutils v1.1.0/go.mod h1:SijmP0QR8LtwsmDs8Yii5Z/S4trXFGFC2oO5g9DP+DQ=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/chai2010/gettext-go v0.0.0-20170215093142-bf70f2a70fb1 h1:HD4PLRzjuCVW79mQ0/pdsalOLHJ+FaEoqJLxfltpb2U=
+github.com/chai2010/gettext-go v0.0.0-20170215093142-bf70f2a70fb1/go.mod h1:/iP1qXHoty45bqomnu2LM+VVyAEdWN+vtSHGlQgyxbw=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cyphar/filepath-securejoin v0.2.2 h1:jCwT2GTP+PY5nBz3c/YL5PAIbusElVrPujOBSCj8xRg=
+github.com/cyphar/filepath-securejoin v0.2.2/go.mod h1:FpkQEhXnPnOthhzymB7CGsFk2G9VLXONKD9G7QGMM+4=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/docker/distribution v2.7.0+incompatible h1:neUDAlf3wX6Ml4HdqTrbcOHXtfRN0TFIwt6YFL7N9RU=
+github.com/docker/distribution v2.7.0+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
+github.com/docker/docker v0.7.3-0.20190312165151-258edd715d46 h1:6ulO/mTQ7hN75egZfHioZVG2srV1c7CBXCQsXJmSOQU=
+github.com/docker/docker v0.7.3-0.20190312165151-258edd715d46/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v1.13.1 h1:5VBhsO6ckUxB0A8CE5LlUJdXzik9cbEbBTQ/ggeml7M=
+github.com/docker/docker v1.13.1/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
+github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
+github.com/docker/go-units v0.3.3 h1:Xk8S3Xj5sLGlG5g67hJmYMmUgXv5N4PhkjJHHqrwnTk=
+github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c h1:ZfSZ3P3BedhKGUhzj7BQlPSU4OvT6tfOKe3DVHzOA7s=
+github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
+github.com/emicklei/go-restful v2.8.0+incompatible h1:wN8GCRDPGHguIynsnBartv5GUgGUg1LAU7+xnSn1j7Q=
+github.com/emicklei/go-restful v2.8.0+incompatible/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
+github.com/evanphx/json-patch v4.1.0+incompatible h1:K1MDoo4AZ4wU0GIU/fPmtZg7VpzLjCxu+UwBD1FvwOc=
+github.com/evanphx/json-patch v4.1.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d h1:105gxyaGwCFad8crR9dcMQWvV9Hvulu6hwUh4tWPJnM=
+github.com/exponent-io/jsonpath v0.0.0-20151013193312-d6023ce2651d/go.mod h1:ZZMPRZwes7CROmyNKgQzC3XPs6L/G2EJLHddWejkmf4=
+github.com/fatih/camelcase v1.0.0 h1:hxNvNX/xYBp0ovncs8WyWZrOrpBNub/JfaMvbURyft8=
+github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwoZc+/fpc=
+github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680 h1:ZktWZesgun21uEDrwW7iEV1zPCGQldM2atlJZ3TdvVM=
+github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-openapi/jsonpointer v0.17.0 h1:nH6xp8XdXHx8dqveo0ZuJBluCO2qGrPbDNZ0dwoRHP0=
+github.com/go-openapi/jsonpointer v0.17.0/go.mod h1:cOnomiV+CVVwFLk0A/MExoFMjwdsUdVpsRhURCKh+3M=
+github.com/go-openapi/jsonreference v0.17.0 h1:yJW3HCkTHg7NOA+gZ83IPHzUSnUzGXhGmsdiCcMexbA=
+github.com/go-openapi/jsonreference v0.17.0/go.mod h1:g4xxGn04lDIRh0GJb5QlpE3HfopLOL6uZrK/VgnsK9I=
+github.com/go-openapi/spec v0.18.0 h1:aIjeyG5mo5/FrvDkpKKEGZPmF9MPHahS72mzfVqeQXQ=
+github.com/go-openapi/spec v0.18.0/go.mod h1:XkF/MOi14NmjsfZ8VtAKf8pIlbZzyoTvZsdfssdxcBI=
+github.com/go-openapi/swag v0.17.0 h1:iqrgMg7Q7SvtbWLlltPrkMs0UBJI6oTSs79JFRUi880=
+github.com/go-openapi/swag v0.17.0/go.mod h1:AByQ+nYG6gQg71GINrmuDXCPWdL640yX49/kXLo40Tg=
 github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y=
+github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8=
 github.com/gogo/protobuf v1.0.0 h1:2jyBKDKU/8v3v2xVR2PtiWQviFUyiaGk2rpfyFT8rTM=
 github.com/gogo/protobuf v1.0.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/groupcache v0.0.0-20181024230925-c65c006176ff h1:kOkM9whyQYodu09SJ6W3NCsHG7crFaJILQ22Gozp3lg=
+github.com/golang/groupcache v0.0.0-20181024230925-c65c006176ff/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
@@ -18,6 +77,8 @@ github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf h1:+RRA9JqSOZFfKrOeqr2z77+8R2RKyh8PG66dcu1V0ck=
 github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf/go.mod h1:HP5RmnzzSNb993RKQDq4+1A4ia9nllfqcQFTQJedwGI=
+github.com/google/uuid v1.1.0 h1:Jf4mxPC/ziBnoPIdpQdPJ9OeiomAUHLvxmPRSPH9m4s=
+github.com/google/uuid v1.1.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gnostic v0.2.0 h1:l6N3VoaVzTncYYW+9yOz2LJJammFZGBO13sqgEhpy9g=
 github.com/googleapis/gnostic v0.2.0/go.mod h1:sJBsCZ4ayReDTBIg8b9dl28c5xFWyhBTVRp3pOg5EKY=
 github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
@@ -28,6 +89,8 @@ github.com/gorilla/mux v1.6.2 h1:Pgr17XVTNXAk3q/r4CpKzC5xBM/qW1uVLV+IhRZpIIk=
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diff --git a/src/k8splugin/internal/helm/helm.go b/src/k8splugin/internal/helm/helm.go
new file mode 100644
index 00000000..65a36d6b
--- /dev/null
+++ b/src/k8splugin/internal/helm/helm.go
@@ -0,0 +1,259 @@
+/*
+ * Copyright 2018 Intel Corporation, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package helm
+
+import (
+	"fmt"
+	"io/ioutil"
+	"k8s.io/helm/pkg/strvals"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/ghodss/yaml"
+	pkgerrors "github.com/pkg/errors"
+
+	"k8s.io/apimachinery/pkg/util/validation"
+	"k8s.io/helm/pkg/chartutil"
+	"k8s.io/helm/pkg/manifest"
+	"k8s.io/helm/pkg/proto/hapi/chart"
+	"k8s.io/helm/pkg/releaseutil"
+	"k8s.io/helm/pkg/renderutil"
+	"k8s.io/helm/pkg/tiller"
+	"k8s.io/helm/pkg/timeconv"
+)
+
+// Template is the interface for all helm templating commands
+// Any backend implementation will implement this interface and will
+// access the functionality via this.
+type Template interface {
+	GenerateKubernetesArtifacts(
+		chartPath string,
+		valueFiles []string,
+		values []string) (map[string][]string, error)
+}
+
+// TemplateClient implements the Template interface
+// It will also be used to maintain any localized state
+type TemplateClient struct {
+	whitespaceRegex *regexp.Regexp
+	kubeVersion     string
+	kubeNameSpace   string
+	releaseName     string
+}
+
+// NewTemplateClient returns a new instance of TemplateClient
+func NewTemplateClient(k8sversion, namespace, releasename string) *TemplateClient {
+	return &TemplateClient{
+		whitespaceRegex: regexp.MustCompile(`^\s*$`),
+		// defaultKubeVersion is the default value of --kube-version flag
+		kubeVersion:   k8sversion,
+		kubeNameSpace: namespace,
+		releaseName:   releasename,
+	}
+}
+
+// Combines valueFiles and values into a single values stream.
+// values takes precedence over valueFiles
+func (h *TemplateClient) processValues(valueFiles []string, values []string) ([]byte, error) {
+	base := map[string]interface{}{}
+
+	//Values files that are used for overriding the chart
+	for _, filePath := range valueFiles {
+		currentMap := map[string]interface{}{}
+
+		var bytes []byte
+		var err error
+		if strings.TrimSpace(filePath) == "-" {
+			bytes, err = ioutil.ReadAll(os.Stdin)
+		} else {
+			bytes, err = ioutil.ReadFile(filePath)
+		}
+
+		if err != nil {
+			return []byte{}, err
+		}
+
+		if err := yaml.Unmarshal(bytes, &currentMap); err != nil {
+			return []byte{}, fmt.Errorf("failed to parse %s: %s", filePath, err)
+		}
+		// Merge with the previous map
+		base = h.mergeValues(base, currentMap)
+	}
+
+	//User specified value. Similar to ones provided by -x
+	for _, value := range values {
+		if err := strvals.ParseInto(value, base); err != nil {
+			return []byte{}, fmt.Errorf("failed parsing --set data: %s", err)
+		}
+	}
+
+	return yaml.Marshal(base)
+}
+
+func (h *TemplateClient) mergeValues(dest map[string]interface{}, src map[string]interface{}) map[string]interface{} {
+	for k, v := range src {
+		// If the key doesn't exist already, then just set the key to that value
+		if _, exists := dest[k]; !exists {
+			dest[k] = v
+			continue
+		}
+		nextMap, ok := v.(map[string]interface{})
+		// If it isn't another map, overwrite the value
+		if !ok {
+			dest[k] = v
+			continue
+		}
+		// Edge case: If the key exists in the destination, but isn't a map
+		destMap, isMap := dest[k].(map[string]interface{})
+		// If the source map has a map for this key, prefer it
+		if !isMap {
+			dest[k] = v
+			continue
+		}
+		// If we got to this point, it is a map in both, so merge them
+		dest[k] = h.mergeValues(destMap, nextMap)
+	}
+	return dest
+}
+
+func (h *TemplateClient) ensureDirectory(f string) error {
+	base := path.Dir(f)
+	_, err := os.Stat(base)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	return os.MkdirAll(base, 0755)
+}
+
+// GenerateKubernetesArtifacts a mapping of type to fully evaluated helm template
+func (h *TemplateClient) GenerateKubernetesArtifacts(inputPath string, valueFiles []string, values []string) (map[string][]string, error) {
+
+	var outputDir, chartPath, namespace, releaseName string
+	var retData map[string][]string
+
+	releaseName = h.releaseName
+	namespace = h.kubeNameSpace
+
+	// verify chart path exists
+	if _, err := os.Stat(inputPath); err == nil {
+		if chartPath, err = filepath.Abs(inputPath); err != nil {
+			return retData, err
+		}
+	} else {
+		return retData, err
+	}
+
+	//Create a temp directory in the system temp folder
+	outputDir, err := ioutil.TempDir("", "helm-tmpl-")
+	if err != nil {
+		return retData, pkgerrors.Wrap(err, "Got error creating temp dir")
+	}
+
+	if namespace == "" {
+		namespace = "default"
+	}
+
+	// get combined values and create config
+	rawVals, err := h.processValues(valueFiles, values)
+	if err != nil {
+		return retData, err
+	}
+	config := &chart.Config{Raw: string(rawVals), Values: map[string]*chart.Value{}}
+
+	if msgs := validation.IsDNS1123Label(releaseName); releaseName != "" && len(msgs) > 0 {
+		return retData, fmt.Errorf("release name %s is not a valid DNS label: %s", releaseName, strings.Join(msgs, ";"))
+	}
+
+	// Check chart requirements to make sure all dependencies are present in /charts
+	c, err := chartutil.Load(chartPath)
+	if err != nil {
+		return retData, pkgerrors.Errorf("Got error: %s", err.Error())
+	}
+
+	renderOpts := renderutil.Options{
+		ReleaseOptions: chartutil.ReleaseOptions{
+			Name:      releaseName,
+			IsInstall: true,
+			IsUpgrade: false,
+			Time:      timeconv.Now(),
+			Namespace: namespace,
+		},
+		KubeVersion: h.kubeVersion,
+	}
+
+	renderedTemplates, err := renderutil.Render(c, config, renderOpts)
+	if err != nil {
+		return retData, err
+	}
+
+	newRenderedTemplates := make(map[string]string)
+
+	//Some manifests can contain multiple yaml documents
+	//This step is splitting them up into multiple files
+	//Each file contains only a single k8s kind
+	for k, v := range renderedTemplates {
+		//Splits into manifest-0, manifest-1 etc
+		if filepath.Base(k) == "NOTES.txt" {
+			continue
+		}
+		rmap := releaseutil.SplitManifests(v)
+		count := 0
+		for _, v1 := range rmap {
+			key := fmt.Sprintf("%s-%d", k, count)
+			newRenderedTemplates[key] = v1
+			count = count + 1
+		}
+	}
+
+	listManifests := manifest.SplitManifests(newRenderedTemplates)
+	var manifestsToRender []manifest.Manifest
+	//render all manifests in the chart
+	manifestsToRender = listManifests
+	retData = make(map[string][]string)
+	for _, m := range tiller.SortByKind(manifestsToRender) {
+		data := m.Content
+		b := filepath.Base(m.Name)
+		if b == "NOTES.txt" {
+			continue
+		}
+		if strings.HasPrefix(b, "_") {
+			continue
+		}
+
+		// blank template after execution
+		if h.whitespaceRegex.MatchString(data) {
+			continue
+		}
+
+		mfilePath := filepath.Join(outputDir, m.Name)
+		h.ensureDirectory(mfilePath)
+		err = ioutil.WriteFile(mfilePath, []byte(data), 0666)
+		if err != nil {
+			return retData, err
+		}
+
+		if val, ok := retData[m.Head.Kind]; ok {
+			retData[m.Head.Kind] = append(val, mfilePath)
+		} else {
+			retData[m.Head.Kind] = []string{mfilePath}
+		}
+	}
+	return retData, nil
+}
diff --git a/src/k8splugin/internal/helm/helm_test.go b/src/k8splugin/internal/helm/helm_test.go
new file mode 100644
index 00000000..a5bcd9c8
--- /dev/null
+++ b/src/k8splugin/internal/helm/helm_test.go
@@ -0,0 +1,195 @@
+// +build unit
+
+/*
+ * Copyright 2018 Intel Corporation, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package helm
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"io/ioutil"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestProcessValues(t *testing.T) {
+
+	chartDir := "../../mock_files/mock_charts/testchart1"
+	profileDir := "../../mock_files/mock_profiles/profile1"
+
+	testCases := []struct {
+		label         string
+		valueFiles    []string
+		values        []string
+		expectedHash  string
+		expectedError string
+	}{
+		{
+			label: "Process Values with Value Files Override",
+			valueFiles: []string{
+				filepath.Join(chartDir, "values.yaml"),
+				filepath.Join(profileDir, "override_values.yaml"),
+			},
+			//Hash of a combined values.yaml file that is expected
+			expectedHash:  "c18a70f426933de3c051c996dc34fd537d0131b2d13a2112a2ecff674db6c2f9",
+			expectedError: "",
+		},
+		{
+			label: "Process Values with Values Pair Override",
+			valueFiles: []string{
+				filepath.Join(chartDir, "values.yaml"),
+			},
+			//Use the same convention as specified in helm template --set
+			values: []string{
+				"service.externalPort=82",
+			},
+			//Hash of a combined values.yaml file that is expected
+			expectedHash:  "028a3521fc9f8777ea7e67a6de0c51f2c875b88ca91734999657f0ca924ddb7a",
+			expectedError: "",
+		},
+		{
+			label: "Process Values with Both Overrides",
+			valueFiles: []string{
+				filepath.Join(chartDir, "values.yaml"),
+				filepath.Join(profileDir, "override_values.yaml"),
+			},
+			//Use the same convention as specified in helm template --set
+			//Key takes precedence over the value from override_values.yaml
+			values: []string{
+				"service.externalPort=82",
+			},
+			//Hash of a combined values.yaml file that is expected
+			expectedHash:  "516fab4ab7b76ba2ff35a97c2a79b74302543f532857b945f2fe25e717e755be",
+			expectedError: "",
+		},
+	}
+
+	h := sha256.New()
+
+	for _, testCase := range testCases {
+		t.Run(testCase.label, func(t *testing.T) {
+			tc := NewTemplateClient("1.12.3", "testnamespace", "testreleasename")
+			out, err := tc.processValues(testCase.valueFiles, testCase.values)
+			if err != nil {
+				if testCase.expectedError == "" {
+					t.Fatalf("Got an error %s", err)
+				}
+				if strings.Contains(err.Error(), testCase.expectedError) == false {
+					t.Fatalf("Got unexpected error message %s", err)
+				}
+			} else {
+				//Compute the hash of returned data and compare
+				h.Write(out)
+				gotHash := fmt.Sprintf("%x", h.Sum(nil))
+				h.Reset()
+				if gotHash != testCase.expectedHash {
+					t.Fatalf("Got unexpected values.yaml %s", out)
+				}
+			}
+		})
+	}
+}
+
+func TestGenerateKubernetesArtifacts(t *testing.T) {
+
+	chartDir := "../../mock_files/mock_charts/testchart1"
+	profileDir := "../../mock_files/mock_profiles/profile1"
+
+	testCases := []struct {
+		label           string
+		chartPath       string
+		valueFiles      []string
+		values          []string
+		expectedHashMap map[string]string
+		expectedError   string
+	}{
+		{
+			label:      "Generate artifacts without any overrides",
+			chartPath:  chartDir,
+			valueFiles: []string{},
+			values:     []string{},
+			//sha256 hash of the evaluated templates in each chart
+			expectedHashMap: map[string]string{
+				"testchart1/templates/service.yaml": "bbd7257d1f6ab958680e642a8fbbbea2002ebbaa9276fb51fbd71b4b66a772cc",
+				"subcharta/templates/service.yaml":  "570389588fffdb7193ab265888d781f3d751f3a40362533344f9aa7bb93a8bb0",
+				"subchartb/templates/service.yaml":  "5654e03d922e8ec49649b4bbda9dfc9e643b3b7c9c18b602cc7e26fd36a39c2a",
+			},
+			expectedError: "",
+		},
+		{
+			label:     "Generate artifacts with overrides",
+			chartPath: chartDir,
+			valueFiles: []string{
+				filepath.Join(profileDir, "override_values.yaml"),
+			},
+			values: []string{
+				"service.externalPort=82",
+			},
+			//sha256 hash of the evaluated templates in each chart
+			expectedHashMap: map[string]string{
+				"testchart1/templates/service.yaml": "4c5aa5d38b763fe4730fc31a759c40566a99a9c51f5e0fc7f93473c9affc2ca8",
+				"subcharta/templates/service.yaml":  "570389588fffdb7193ab265888d781f3d751f3a40362533344f9aa7bb93a8bb0",
+				"subchartb/templates/service.yaml":  "5654e03d922e8ec49649b4bbda9dfc9e643b3b7c9c18b602cc7e26fd36a39c2a",
+			},
+			expectedError: "",
+		},
+	}
+
+	h := sha256.New()
+
+	for _, testCase := range testCases {
+		t.Run(testCase.label, func(t *testing.T) {
+			tc := NewTemplateClient("1.12.3", "testnamespace", "testreleasename")
+			out, err := tc.GenerateKubernetesArtifacts(testCase.chartPath, testCase.valueFiles,
+				testCase.values)
+			if err != nil {
+				if testCase.expectedError == "" {
+					t.Fatalf("Got an error %s", err)
+				}
+				if strings.Contains(err.Error(), testCase.expectedError) == false {
+					t.Fatalf("Got unexpected error message %s", err)
+				}
+			} else {
+				//Compute the hash of returned data and compare
+				for _, v := range out {
+					for _, f := range v {
+						data, err := ioutil.ReadFile(f)
+						if err != nil {
+							t.Errorf("Unable to read file %s", v)
+						}
+						h.Write(data)
+						gotHash := fmt.Sprintf("%x", h.Sum(nil))
+						h.Reset()
+
+						//Find the right hash from expectedHashMap
+						expectedHash := ""
+						for k1, v1 := range testCase.expectedHashMap {
+							if strings.Contains(f, k1) == true {
+								expectedHash = v1
+								break
+							}
+						}
+						if gotHash != expectedHash {
+							t.Fatalf("Got unexpected hash for %s", f)
+						}
+					}
+				}
+			}
+		})
+	}
+}