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feat(engine): add jq filter template func

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resolve #11212

Continuing original work by longkai.
Branch rebased against main to simplify merge conflicts.

Signed-off-by: Avo Sepp <68659218+avo-sepp@users.noreply.github.com>
Author:    longkai <im.longkai@gmail.com>
pull/11835/head
Avo Sepp 3 years ago
parent b789d8677d
commit 790c6fa18c
No known key found for this signature in database
GPG Key ID: 046ED5FC037E0B62
5 changed files with 69 additions and 3 deletions
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1
cmd/helm/helm.go
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@ -34,7 +34,6 @@ import (
"helm.sh/helm/v3/pkg/kube"
kubefake "helm.sh/helm/v3/pkg/kube/fake"
"helm.sh/helm/v3/pkg/release"
"helm.sh/helm/v3/pkg/storage/driver"
)
var settings = cli.New()

6
go.mod
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@ -96,6 +96,8 @@ require (
github.com/huandu/xstrings v1.3.3 // indirect
github.com/imdario/mergo v0.3.12 // indirect
github.com/inconshreveable/mousetrap v1.0.1 // indirect
github.com/itchyny/gojq v0.12.11 //indirect
github.com/itchyny/timefmt-go v0.1.5 //indirect
github.com/josharian/intern v1.0.0 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/compress v1.11.13 // indirect
@ -104,8 +106,8 @@ require (
github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de // indirect
github.com/mailru/easyjson v0.7.6 // indirect
github.com/mattn/go-colorable v0.0.9 // indirect
github.com/mattn/go-isatty v0.0.3 // indirect
github.com/mattn/go-runewidth v0.0.9 // indirect
github.com/mattn/go-isatty v0.0.16 // indirect
github.com/mattn/go-runewidth v0.0.14 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
github.com/mitchellh/go-wordwrap v1.0.0 // indirect
github.com/mitchellh/reflectwalk v1.0.2 // indirect

8
go.sum
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@ -340,6 +340,10 @@ github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH
github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
github.com/itchyny/gojq v0.12.11 h1:YhLueoHhHiN4mkfM+3AyJV6EPcCxKZsOnYf+aVSwaQw=
github.com/itchyny/gojq v0.12.11/go.mod h1:o3FT8Gkbg/geT4pLI0tF3hvip5F3Y/uskjRz9OYa38g=
github.com/itchyny/timefmt-go v0.1.5 h1:G0INE2la8S6ru/ZI5JecgyzbbJNs5lG1RcBqa7Jm6GE=
github.com/itchyny/timefmt-go v0.1.5/go.mod h1:nEP7L+2YmAbT2kZ2HfSs1d8Xtw9LY8D2stDBckWakZ8=
github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
@ -400,9 +404,11 @@ github.com/mattn/go-colorable v0.0.9 h1:UVL0vNpWh04HeJXV0KLcaT7r06gOH2l4OW6ddYRU
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
github.com/mattn/go-isatty v0.0.3 h1:ns/ykhmWi7G9O+8a448SecJU3nSMBXJfqQkl0upE1jI=
github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
github.com/mattn/go-oci8 v0.1.1/go.mod h1:wjDx6Xm9q7dFtHJvIlrI99JytznLw5wQ4R+9mNXJwGI=
github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
github.com/mattn/go-runewidth v0.0.14/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
github.com/mattn/go-shellwords v1.0.12 h1:M2zGm7EW6UQJvDeQxo4T51eKPurbeFbe8WtebGE2xrk=
github.com/mattn/go-shellwords v1.0.12/go.mod h1:EZzvwXDESEeg03EKmM+RmDnNOPKG4lLtQsUlTZDWQ8Y=
github.com/mattn/go-sqlite3 v1.11.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
@ -507,6 +513,7 @@ github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1
github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
github.com/prometheus/procfs v0.8.0 h1:ODq8ZFEaYeCaZOJlZZdJA2AbQR98dSHSM1KW/You5mo=
github.com/prometheus/procfs v0.8.0/go.mod h1:z7EfXMXOkbkqb9IINtpCn86r/to3BnA0uaxHdg830/4=
github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
@ -783,6 +790,7 @@ golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBc
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

35
pkg/engine/funcs.go
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@ -24,6 +24,7 @@ import (
"github.com/BurntSushi/toml"
"github.com/Masterminds/sprig/v3"
"github.com/itchyny/gojq"
"sigs.k8s.io/yaml"
)
@ -55,6 +56,7 @@ func funcMap() template.FuncMap {
"toJson": toJSON,
"fromJson": fromJSON,
"fromJsonArray": fromJSONArray,
"jq": jq,
// This is a placeholder for the "include" function, which is
// late-bound to a template. By declaring it here, we preserve the
@ -175,3 +177,36 @@ func fromJSONArray(str string) []interface{} {
}
return a
}
// jq is like sed for JSON/YAML data - you can use it to slice and filter
// and map and transform structured data with the same ease that sed, awk, grep
// and friends let you play with text.
//
// See the [jq Tutorial](https://stedolan.github.io/jq/tutorial/) for more.
//
// This is a pure go implementation of jq. The type of v should be
// []interface{} for an array or map[string]interface{} for a map.
// Since the jq filter returns a iterator, it will be collected as a slice
// even there is only one item.
// It will insert the returned error message string as
// the first and only item in the returned array.
func jq(exp string, v any) []any {
query, err := gojq.Parse(exp)
if err != nil {
return []any{err.Error()}
}
iter := query.Run(v)
var list []any
for {
it, ok := iter.Next()
if !ok {
break
}
if err, ok := it.(error); ok {
return []any{err.Error()}
}
list = append(list, it)
}
return list
}

22
pkg/engine/funcs_test.go
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@ -99,6 +99,28 @@ func TestFuncs(t *testing.T) {
tpl: `{{ lookup "v1" "Namespace" "" "unlikelynamespace99999999" }}`,
expect: `map[]`,
vars: `["one", "two"]`,
}, {
tpl: "{{ . | jq `.ports[] | select(.name == \"grpc\") | .containerPort` | first }}",
expect: "8080",
vars: map[string]any{
"ports": []any{
map[string]any{
"containerPort": 80,
"name": "http",
"protocol": "TCP",
},
map[string]any{
"containerPort": 443,
"name": "https",
"protocol": "TCP",
},
map[string]any{
"containerPort": 8080,
"name": "grpc",
"protocol": "TCP",
},
},
},
}}
for _, tt := range tests {

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