/
exec.go
125 lines (107 loc) · 3.71 KB
/
exec.go
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/*
Copyright © 2019 stackql info@stackql.io
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 cmd
import (
"bytes"
"io"
"os"
"runtime/pprof"
"github.com/spf13/cobra"
"github.com/stackql/stackql/internal/stackql/driver"
"github.com/stackql/stackql/internal/stackql/entryutil"
"github.com/stackql/stackql/internal/stackql/handler"
"github.com/stackql/stackql/internal/stackql/iqlerror"
"github.com/stackql/stackql/internal/stackql/writer"
)
// execCmd represents the exec command.
//
//nolint:gochecknoglobals // cobra pattern
var execCmd = &cobra.Command{
Use: "exec",
Short: "Run one or more stackql commands or queries",
Long: `Run one or more stackql commands or queries from the command line or from an
input file. For example:
stackql exec \
"select id, name from compute.instances where project = 'stackql-demo' and zone = 'australia-southeast1-a'" \
--credentialsfilepath /mnt/c/tmp/stackql-demo.json --output csv
stackql exec -i iqlscripts/listinstances.iql --credentialsfilepath /mnt/c/tmp/stackql-demo.json --output json
stackql exec -i iqlscripts/create-disk.iql --credentialsfilepath /mnt/c/tmp/stackql-demo.json
`,
Run: func(cmd *cobra.Command, args []string) {
var err error
var rdr io.Reader
if runtimeCtx.CPUProfile != "" {
var f *os.File
f, err = os.Create(runtimeCtx.CPUProfile)
if err != nil {
iqlerror.PrintErrorAndExitOneIfError(err)
}
pprof.StartCPUProfile(f) //nolint:errcheck // not important for dev option
defer pprof.StopCPUProfile()
}
switch runtimeCtx.InfilePath {
case "stdin":
if len(args) == 0 || args[0] == "" {
cmd.Help() //nolint:errcheck // not important
os.Exit(0)
}
rdr = bytes.NewReader([]byte(args[0]))
default:
rdr, err = os.Open(runtimeCtx.InfilePath)
iqlerror.PrintErrorAndExitOneIfError(err)
}
inputBundle, err := entryutil.BuildInputBundle(runtimeCtx)
iqlerror.PrintErrorAndExitOneIfError(err)
handlerCtx, err := entryutil.BuildHandlerContext(runtimeCtx, rdr, queryCache, inputBundle)
iqlerror.PrintErrorAndExitOneIfError(err)
iqlerror.PrintErrorAndExitOneIfNil(handlerCtx, "Handler context error")
cr := newCommandRunner()
cr.RunCommand(handlerCtx, nil, nil)
},
}
func getOutputFile(filename string) (*os.File, error) {
switch filename {
case "stdout":
return os.Stdout, nil
case "stderr":
return os.Stderr, nil
default:
return os.Create(filename)
}
}
type commandRunner interface {
RunCommand(handlerCtx handler.HandlerContext, outfile io.Writer, outErrFile io.Writer)
}
func newCommandRunner() commandRunner {
return &commandRunnerImpl{}
}
type commandRunnerImpl struct {
}
func (cr *commandRunnerImpl) RunCommand(handlerCtx handler.HandlerContext, outfile io.Writer, outErrFile io.Writer) {
defer iqlerror.HandlePanic(outErrFile)
if outfile == nil {
outfile, _ = getOutputFile(handlerCtx.GetRuntimeContext().OutfilePath)
}
if outErrFile == nil {
outErrFile, _ = getOutputFile(writer.StdErrStr)
}
handlerCtx.SetOutfile(outfile)
handlerCtx.SetOutErrFile(outErrFile)
stackqlDriver, err := driver.NewStackQLDriver(handlerCtx)
iqlerror.PrintErrorAndExitOneIfError(err)
if handlerCtx.GetRuntimeContext().DryRunFlag {
stackqlDriver.ProcessDryRun(handlerCtx.GetRawQuery())
return
}
stackqlDriver.ProcessQuery(handlerCtx.GetRawQuery())
}