Init

.gitignore

@@ -0,0 +1,13 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+promcli

Gopkg.toml

@@ -0,0 +1,38 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[prune]
+  go-tests = true
+  unused-packages = true
+
+[[constraint]]
+  name = "github.com/c-bata/go-prompt"
+  version = "0.2.2"
+
+[[constraint]]
+  name = "github.com/prometheus/prometheus"
+  version = "2.3.2"

Makefile

@@ -0,0 +1,5 @@
+build:
+	go build
+
+proxy:
+	ln -s $(pwd)/_proxy/proxy.go $(pwd)/vendor/github.com/prometheus/prometheus/promql/proxy.go

_proxy/proxy.go

@@ -0,0 +1,48 @@
+package promql
+
+import (
+"log"
+"github.com/prometheus/prometheus/storage"
+"github.com/prometheus/prometheus/util/testutil"
+)
+
+type TestCommand = testCommand
+
+type t struct {}
+func (t t) Fatal(args ...interface{}) {
+	log.Fatal(args)
+}
+
+func (t t) Fatalf(format string, args ...interface{}) {
+	log.Fatalf(format, args)
+}
+
+func ParseTestCommand(input string) ([]TestCommand, error) {
+	t := Test{
+		T: t{},
+		cmds: []TestCommand{},
+	}
+
+	err := t.parse(input)
+	if err != nil {
+		return t.cmds, err
+	}
+	return t.cmds, nil
+}
+
+func ExecuteTestCommand(tc TestCommand, storage *storage.Storage) (*storage.Storage, error) {
+	t := Test{
+		T: t{},
+		storage: *storage,
+		cmds: []TestCommand{tc},
+	}
+	return &t.storage, t.exec(tc)
+}
+
+func NewTestStorage() *storage.Storage {
+	t := Test{
+		T: t{},
+	}
+	storage := testutil.NewStorage(t)
+	return &storage
+}

main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"github.com/c-bata/go-prompt"
+	"fmt"
+	"github.com/prometheus/prometheus/promql"
+)
+
+func executor(input string) {
+	storage := promql.NewTestStorage()
+	fmt.Println("Your input: " + input)
+	cmds, err := promql.ParseTestCommand(input)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(cmds)
+	for _, cmd := range cmds {
+		storage, err = promql.ExecuteTestCommand(cmd, storage)
+		if err != nil {
+			panic(err)
+		}
+	}
+}
+
+func completer(d prompt.Document) []prompt.Suggest {
+	s := []prompt.Suggest{
+		{Text: "users", Description: "Users table"},
+		{Text: "articles", Description: "Articles table"},
+		{Text: "comments", Description: "Comments table"},
+	}
+	return prompt.FilterHasPrefix(s, d.GetWordBeforeCursor(), true)
+}
+
+func main() {
+	p := prompt.New(
+		executor,
+		completer,
+		prompt.OptionPrefix(">>> "),
+		prompt.OptionTitle("PromCLI"),
+	)
+
+	p.Run()
+}