Local queries (#641)

* Read local queries from pgweb home directory
* Refactor local query functionality
* Allow picking local query in the query tab
* WIP
* Disable local query dropdown during execution
* Only allow local queries running in a single session mode
* Add middleware to enforce local query endpoint availability
* Fix query check
* Add query store tests
* Make query store errors portable
* Skip building specific tests on windows

data/lc_example1.sql

@@ -0,0 +1,2 @@
+-- pgweb: host="localhost"
+select 'foo'

data/lc_example2.sql

@@ -0,0 +1,5 @@
+-- pgweb: host="localhost"
+-- some comment
+-- pgweb: user="foo"
+
+select 'foo'

data/lc_invalid_meta.sql

@@ -0,0 +1,2 @@
+-- pgweb: host="localhost" mode="foo"
+select 'foo'

data/lc_no_meta.sql

@@ -0,0 +1 @@
+select 'foo'

pkg/api/api.go

@@ -17,6 +17,7 @@ import (
 	"github.com/sosedoff/pgweb/pkg/command"
 	"github.com/sosedoff/pgweb/pkg/connection"
 	"github.com/sosedoff/pgweb/pkg/metrics"
+	"github.com/sosedoff/pgweb/pkg/queries"
 	"github.com/sosedoff/pgweb/pkg/shared"
 	"github.com/sosedoff/pgweb/static"
 )
@@ -27,6 +28,9 @@ var (
 
 	// DbSessions represents the mapping for client connections
 	DbSessions *SessionManager
+
+	// QueryStore reads the SQL queries stores in the home directory
+	QueryStore *queries.Store
 )
 
 // DB returns a database connection from the client context
@@ -555,6 +559,7 @@ func GetInfo(c *gin.Context) {
 		"features": gin.H{
 			"session_lock":  command.Opts.LockSession,
 			"query_timeout": command.Opts.QueryTimeout,
+			"local_queries": QueryStore != nil,
 		},
 	})
 }
@@ -606,3 +611,78 @@ func GetFunction(c *gin.Context) {
 	res, err := DB(c).Function(c.Param("id"))
 	serveResult(c, res, err)
 }
+
+func GetLocalQueries(c *gin.Context) {
+	connCtx, err := DB(c).GetConnContext()
+	if err != nil {
+		badRequest(c, err)
+		return
+	}
+
+	storeQueries, err := QueryStore.ReadAll()
+	if err != nil {
+		badRequest(c, err)
+		return
+	}
+
+	queries := []localQuery{}
+	for _, q := range storeQueries {
+		if !q.IsPermitted(connCtx.Host, connCtx.User, connCtx.Database, connCtx.Mode) {
+			continue
+		}
+
+		queries = append(queries, localQuery{
+			ID:          q.ID,
+			Title:       q.Meta.Title,
+			Description: q.Meta.Description,
+			Query:       cleanQuery(q.Data),
+		})
+	}
+
+	successResponse(c, queries)
+}
+
+func RunLocalQuery(c *gin.Context) {
+	query, err := QueryStore.Read(c.Param("id"))
+	if err != nil {
+		if err == queries.ErrQueryFileNotExist {
+			query = nil
+		} else {
+			badRequest(c, err)
+			return
+		}
+	}
+	if query == nil {
+		errorResponse(c, 404, "query not found")
+		return
+	}
+
+	connCtx, err := DB(c).GetConnContext()
+	if err != nil {
+		badRequest(c, err)
+		return
+	}
+
+	if !query.IsPermitted(connCtx.Host, connCtx.User, connCtx.Database, connCtx.Mode) {
+		errorResponse(c, 404, "query not found")
+		return
+	}
+
+	if c.Request.Method == http.MethodGet {
+		successResponse(c, localQuery{
+			ID:          query.ID,
+			Title:       query.Meta.Title,
+			Description: query.Meta.Description,
+			Query:       query.Data,
+		})
+		return
+	}
+
+	statement := cleanQuery(query.Data)
+	if statement == "" {
+		badRequest(c, errQueryRequired)
+		return
+	}
+
+	HandleQuery(statement, c)
+}

pkg/api/middleware.go

@@ -56,3 +56,14 @@ func corsMiddleware() gin.HandlerFunc {
 		c.Header("Access-Control-Allow-Origin", command.Opts.CorsOrigin)
 	}
 }
+
+func requireLocalQueries() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		if QueryStore == nil {
+			badRequest(c, "local queries are disabled")
+			return
+		}
+
+		c.Next()
+	}
+}

pkg/api/routes.go

@@ -54,6 +54,9 @@ func SetupRoutes(router *gin.Engine) {
 	api.GET("/history", GetHistory)
 	api.GET("/bookmarks", GetBookmarks)
 	api.GET("/export", DataExport)
+	api.GET("/local_queries", requireLocalQueries(), GetLocalQueries)
+	api.GET("/local_queries/:id", requireLocalQueries(), RunLocalQuery)
+	api.POST("/local_queries/:id", requireLocalQueries(), RunLocalQuery)
 }
 
 func SetupMetrics(engine *gin.Engine) {

pkg/api/types.go

@@ -0,0 +1,8 @@
+package api
+
+type localQuery struct {
+	ID          string `json:"id"`
+	Title       string `json:"title,omitempty"`
+	Description string `json:"description,omitempty"`
+	Query       string `json:"query"`
+}

pkg/cli/cli.go

@@ -1,6 +1,7 @@
 package cli
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -20,6 +21,7 @@ import (
 	"github.com/sosedoff/pgweb/pkg/command"
 	"github.com/sosedoff/pgweb/pkg/connection"
 	"github.com/sosedoff/pgweb/pkg/metrics"
+	"github.com/sosedoff/pgweb/pkg/queries"
 	"github.com/sosedoff/pgweb/pkg/util"
 )
 
@@ -28,11 +30,11 @@ var (
 	options command.Options
 
 	readonlyWarning = `
-------------------------------------------------------
-SECURITY WARNING: You are running pgweb in read-only mode.
-This mode is designed for environments where users could potentially delete / change data.
-For proper read-only access please follow postgresql role management documentation.
-------------------------------------------------------`
+--------------------------------------------------------------------------------
+SECURITY WARNING: You are running Pgweb in read-only mode.
+This mode is designed for environments where users could potentially delete or change data.
+For proper read-only access please follow PostgreSQL role management documentation.
+--------------------------------------------------------------------------------`
 
 	regexErrConnectionRefused = regexp.MustCompile(`(connection|actively) refused`)
 	regexErrAuthFailed        = regexp.MustCompile(`authentication failed`)
@@ -157,9 +159,33 @@ func initOptions() {
 		}
 	}
 
+	configureLocalQueryStore()
 	printVersion()
 }
 
+func configureLocalQueryStore() {
+	if options.Sessions || options.QueriesDir == "" {
+		return
+	}
+
+	stat, err := os.Stat(options.QueriesDir)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			logger.Debugf("local queries directory %q does not exist, disabling feature", options.QueriesDir)
+		} else {
+			logger.Debugf("local queries feature disabled due to error: %v", err)
+		}
+		return
+	}
+
+	if !stat.IsDir() {
+		logger.Debugf("local queries path %q is not a directory", options.QueriesDir)
+		return
+	}
+
+	api.QueryStore = queries.NewStore(options.QueriesDir)
+}
+
 func configureLogger(opts command.Options) error {
 	if options.Debug {
 		logger.SetLevel(logrus.DebugLevel)

pkg/client/client.go

@@ -585,3 +585,44 @@ func (client *Client) hasHistoryRecord(query string) bool {
 
 	return result
 }
+
+type ConnContext struct {
+	Host     string
+	User     string
+	Database string
+	Mode     string
+}
+
+func (c ConnContext) String() string {
+	return fmt.Sprintf(
+		"host=%q user=%q database=%q mode=%q",
+		c.Host, c.User, c.Database, c.Mode,
+	)
+}
+
+// ConnContext returns information about current database connection
+func (client *Client) GetConnContext() (*ConnContext, error) {
+	url, err := neturl.Parse(client.ConnectionString)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
+	defer cancel()
+
+	connCtx := ConnContext{
+		Host: url.Hostname(),
+		Mode: "default",
+	}
+
+	if command.Opts.ReadOnly {
+		connCtx.Mode = "readonly"
+	}
+
+	row := client.db.QueryRowContext(ctx, "SELECT current_user, current_database()")
+	if err := row.Scan(&connCtx.User, &connCtx.Database); err != nil {
+		return nil, err
+	}
+
+	return &connCtx, nil
+}

pkg/client/client_test.go

@@ -660,6 +660,15 @@ func testTablesStats(t *testing.T) {
 	assert.Equal(t, columns, result.Columns)
 }
 
+func testConnContext(t *testing.T) {
+	result, err := testClient.GetConnContext()
+	assert.NoError(t, err)
+	assert.Equal(t, "localhost", result.Host)
+	assert.Equal(t, "postgres", result.User)
+	assert.Equal(t, "booktown", result.Database)
+	assert.Equal(t, "default", result.Mode)
+}
+
 func TestAll(t *testing.T) {
 	if onWindows() {
 		t.Log("Unit testing on Windows platform is not supported.")
@@ -698,6 +707,7 @@ func TestAll(t *testing.T) {
 	testReadOnlyMode(t)
 	testDumpExport(t)
 	testTablesStats(t)
+	testConnContext(t)
 
 	teardownClient()
 	teardown(t, true)

pkg/command/options.go

@@ -48,6 +48,7 @@ type Options struct {
 	LockSession                  bool   `long:"lock-session" description:"Lock session to a single database connection"`
 	Bookmark                     string `short:"b" long:"bookmark" description:"Bookmark to use for connection. Bookmark files are stored under $HOME/.pgweb/bookmarks/*.toml" default:""`
 	BookmarksDir                 string `long:"bookmarks-dir" description:"Overrides default directory for bookmark files to search" default:""`
+	QueriesDir                   string `long:"queries-dir" description:"Overrides default directory for local queries"`
 	DisablePrettyJSON            bool   `long:"no-pretty-json" description:"Disable JSON formatting feature for result export"`
 	DisableSSH                   bool   `long:"no-ssh" description:"Disable database connections via SSH"`
 	ConnectBackend               string `long:"connect-backend" description:"Enable database authentication through a third party backend"`
@@ -159,10 +160,19 @@ func ParseOptions(args []string) (Options, error) {
 		}
 	}
 
+	homePath, err := homedir.Dir()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "[WARN] cant detect home dir: %v", err)
+		homePath = os.Getenv("HOME")
+	}
+
+	if homePath != "" {
 		if opts.BookmarksDir == "" {
-		path, err := homedir.Dir()
-		if err == nil {
-			opts.BookmarksDir = filepath.Join(path, ".pgweb/bookmarks")
+			opts.BookmarksDir = filepath.Join(homePath, ".pgweb/bookmarks")
+		}
+
+		if opts.QueriesDir == "" {
+			opts.QueriesDir = filepath.Join(homePath, ".pgweb/queries")
 		}
 	}
 

pkg/queries/field.go

@@ -0,0 +1,43 @@
+package queries
+
+import (
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+type field struct {
+	value string
+	re    *regexp.Regexp
+}
+
+func (f field) String() string {
+	return f.value
+}
+
+func (f field) matches(input string) bool {
+	if f.re != nil {
+		return f.re.MatchString(input)
+	}
+	return f.value == input
+}
+
+func newField(value string) (field, error) {
+	f := field{value: value}
+
+	if value == "*" { // match everything
+		f.re = reMatchAll
+	} else if reExpression.MatchString(value) { // match by given expression
+		// Make writing expressions easier for values like "foo_*"
+		if strings.Count(value, "*") == 1 {
+			value = strings.Replace(value, "*", "(.+)", 1)
+		}
+		re, err := regexp.Compile(fmt.Sprintf("^%s$", value))
+		if err != nil {
+			return f, err
+		}
+		f.re = re
+	}
+
+	return f, nil
+}

pkg/queries/field_test.go

@@ -0,0 +1,41 @@
+package queries
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_field(t *testing.T) {
+	field, err := newField("val")
+	assert.NoError(t, err)
+	assert.Equal(t, "val", field.value)
+	assert.Equal(t, true, field.matches("val"))
+	assert.Equal(t, false, field.matches("value"))
+
+	field, err = newField("*")
+	assert.NoError(t, err)
+	assert.Equal(t, "*", field.value)
+	assert.NotNil(t, field.re)
+	assert.Equal(t, true, field.matches("val"))
+	assert.Equal(t, true, field.matches("value"))
+
+	field, err = newField("(.+")
+	assert.EqualError(t, err, "error parsing regexp: missing closing ): `^(.+$`")
+	assert.NotNil(t, field)
+
+	field, err = newField("foo_*")
+	assert.NoError(t, err)
+	assert.Equal(t, "foo_*", field.value)
+	assert.NotNil(t, field.re)
+	assert.Equal(t, false, field.matches("foo"))
+	assert.Equal(t, true, field.matches("foo_bar"))
+	assert.Equal(t, true, field.matches("foo_bar_widget"))
+
+}
+
+func Test_fieldString(t *testing.T) {
+	field, err := newField("val")
+	assert.NoError(t, err)
+	assert.Equal(t, "val", field.String())
+}

pkg/queries/metadata.go

@@ -0,0 +1,148 @@
+package queries
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var (
+	reMetaPrefix  = regexp.MustCompile(`(?m)^\s*--\s*pgweb:\s*(.+)`)
+	reMetaContent = regexp.MustCompile(`([\w]+)\s*=\s*"([^"]+)"`)
+	reMatchAll    = regexp.MustCompile(`^(.+)$`)
+	reExpression  = regexp.MustCompile(`[\[\]\(\)\+\*]+`)
+
+	allowedKeys  = []string{"title", "description", "host", "user", "database", "mode", "timeout"}
+	allowedModes = map[string]bool{"readonly": true, "*": true}
+)
+
+type Metadata struct {
+	Title       string
+	Description string
+	Host        field
+	User        field
+	Database    field
+	Mode        field
+	Timeout     *time.Duration
+}
+
+func parseMetadata(input string) (*Metadata, error) {
+	fields, err := parseFields(input)
+	if err != nil {
+		return nil, err
+	}
+	if fields == nil {
+		return nil, nil
+	}
+
+	// Host must be set to limit queries availability
+	if fields["host"] == "" {
+		return nil, fmt.Errorf("host field must be set")
+	}
+
+	// Allow matching for any user, database and mode by default
+	if fields["user"] == "" {
+		fields["user"] = "*"
+	}
+	if fields["database"] == "" {
+		fields["database"] = "*"
+	}
+	if fields["mode"] == "" {
+		fields["mode"] = "*"
+	}
+
+	hostField, err := newField(fields["host"])
+	if err != nil {
+		return nil, fmt.Errorf(`error initializing "host" field: %w`, err)
+	}
+
+	userField, err := newField(fields["user"])
+	if err != nil {
+		return nil, fmt.Errorf(`error initializing "user" field: %w`, err)
+	}
+
+	dbField, err := newField(fields["database"])
+	if err != nil {
+		return nil, fmt.Errorf(`error initializing "database" field: %w`, err)
+	}
+
+	if !allowedModes[fields["mode"]] {
+		return nil, fmt.Errorf(`invalid "mode" field value: %q`, fields["mode"])
+	}
+	modeField, err := newField(fields["mode"])
+	if err != nil {
+		return nil, fmt.Errorf(`error initializing "mode" field: %w`, err)
+	}
+
+	var timeout *time.Duration
+	if fields["timeout"] != "" {
+		timeoutSec, err := strconv.Atoi(fields["timeout"])
+		if err != nil {
+			return nil, fmt.Errorf(`error initializing "timeout" field: %w`, err)
+		}
+		timeoutVal := time.Duration(timeoutSec) * time.Second
+		timeout = &timeoutVal
+	}
+
+	return &Metadata{
+		Title:       fields["title"],
+		Description: fields["description"],
+		Host:        hostField,
+		User:        userField,
+		Database:    dbField,
+		Mode:        modeField,
+		Timeout:     timeout,
+	}, nil
+}
+
+func parseFields(input string) (map[string]string, error) {
+	result := map[string]string{}
+	seenKeys := map[string]bool{}
+
+	allowed := map[string]bool{}
+	for _, key := range allowedKeys {
+		allowed[key] = true
+	}
+
+	matches := reMetaPrefix.FindAllStringSubmatch(input, -1)
+	if len(matches) == 0 {
+		return nil, nil
+	}
+
+	for _, match := range matches {
+		content := reMetaContent.FindAllStringSubmatch(match[1], -1)
+		if len(content) == 0 {
+			continue
+		}
+
+		for _, field := range content {
+			key := field[1]
+			value := field[2]
+
+			if !allowed[key] {
+				return result, fmt.Errorf("unknown key: %q", key)
+			}
+			if seenKeys[key] {
+				return result, fmt.Errorf("duplicate key: %q", key)
+			}
+
+			seenKeys[key] = true
+			result[key] = value
+		}
+	}
+
+	return result, nil
+}
+
+func sanitizeMetadata(input string) string {
+	lines := []string{}
+	for _, line := range strings.Split(input, "\n") {
+		line = reMetaPrefix.ReplaceAllString(line, "")
+		if len(line) > 0 {
+			lines = append(lines, line)
+		}
+	}
+	return strings.Join(lines, "\n")
+}

pkg/queries/metadata_test.go

@@ -0,0 +1,146 @@
+package queries
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_parseFields(t *testing.T) {
+	examples := []struct {
+		input string
+		err   error
+		vals  map[string]string
+	}{
+		{input: "", err: nil, vals: nil},
+		{input: "foobar", err: nil, vals: nil},
+		{input: "-- no pgweb meta", err: nil, vals: nil},
+		{
+			input: `--pgweb: foo=bar`,
+			err:   nil,
+			vals:  map[string]string{},
+		},
+		{
+			input: `--pgweb: host="localhost"`,
+			err:   nil,
+			vals:  map[string]string{"host": "localhost"},
+		},
+		{
+			input: `--pgweb: host="*" user="admin" database  ="mydb"; mode = "readonly"`,
+			err:   nil,
+			vals: map[string]string{
+				"host":     "*",
+				"database": "mydb",
+				"user":     "admin",
+				"mode":     "readonly",
+			},
+		},
+	}
+
+	for _, ex := range examples {
+		t.Run(ex.input, func(t *testing.T) {
+			fields, err := parseFields(ex.input)
+			assert.Equal(t, ex.err, err)
+			assert.Equal(t, ex.vals, fields)
+		})
+	}
+}
+
+func Test_parseMetadata(t *testing.T) {
+	examples := []struct {
+		input string
+		err   string
+		check func(meta *Metadata) bool
+	}{
+		{
+			input: `--pgweb: `,
+			err:   `host field must be set`,
+		},
+		{
+			input: `--pgweb: hello="world"`,
+			err:   `unknown key: "hello"`,
+		},
+		{
+			input: `--pgweb: host="localhost" user="anyuser" database="anydb" mode="foo"`,
+			err:   `invalid "mode" field value: "foo"`,
+		},
+		{
+			input: "--pgweb2:",
+			check: func(m *Metadata) bool {
+				return m == nil
+			},
+		},
+		{
+			input: `--pgweb: host="localhost"`,
+			check: func(m *Metadata) bool {
+				return m.Host.value == "localhost" &&
+					m.User.value == "*" &&
+					m.Database.value == "*" &&
+					m.Mode.value == "*" &&
+					m.Timeout == nil
+			},
+		},
+		{
+			input: `--pgweb: host="localhost" user="anyuser" database="anydb" mode="*"`,
+			check: func(m *Metadata) bool {
+				return m.Host.value == "localhost" &&
+					m.Host.re == nil &&
+					m.User.value == "anyuser" &&
+					m.Database.value == "anydb" &&
+					m.Mode.value == "*" &&
+					m.Timeout == nil
+			},
+		},
+		{
+			input: `--pgweb: host="localhost" timeout="foo"`,
+			err:   `error initializing "timeout" field: strconv.Atoi: parsing "foo": invalid syntax`,
+		},
+		{
+			input: `-- pgweb: host="local(host|dev)"`,
+			check: func(m *Metadata) bool {
+				return m.Host.value == "local(host|dev)" && m.Host.re != nil &&
+					m.Host.matches("localhost") && m.Host.matches("localdev") &&
+					!m.Host.matches("localfoo") && !m.Host.matches("superlocaldev")
+			},
+		},
+	}
+
+	for _, ex := range examples {
+		t.Run(ex.input, func(t *testing.T) {
+			meta, err := parseMetadata(ex.input)
+			if ex.err != "" {
+				assert.Contains(t, err.Error(), ex.err)
+			}
+			if ex.check != nil {
+				assert.Equal(t, true, ex.check(meta))
+			}
+		})
+	}
+}
+
+func Test_sanitizeMetadata(t *testing.T) {
+	examples := []struct {
+		input  string
+		output string
+	}{
+		{input: "", output: ""},
+		{input: "foo", output: "foo"},
+		{
+			input: `
+-- pgweb: metadata
+query1
+-- pgweb: more metadata
+
+query2
+
+`,
+			output: "query1\nquery2",
+		},
+	}
+
+	for _, ex := range examples {
+		t.Run(ex.input, func(t *testing.T) {
+			assert.Equal(t, ex.output, sanitizeMetadata(ex.input))
+		})
+	}
+}

pkg/queries/query.go

@@ -0,0 +1,23 @@
+package queries
+
+type Query struct {
+	ID   string
+	Path string
+	Meta *Metadata
+	Data string
+}
+
+// IsPermitted returns true if a query is allowed to execute for a given db context
+func (q Query) IsPermitted(host, user, database, mode string) bool {
+	// All fields must be provided for matching
+	if q.Meta == nil || host == "" || user == "" || database == "" || mode == "" {
+		return false
+	}
+
+	meta := q.Meta
+
+	return meta.Host.matches(host) &&
+		meta.User.matches(user) &&
+		meta.Database.matches(database) &&
+		meta.Mode.matches(mode)
+}

pkg/queries/query_test.go

@@ -0,0 +1,77 @@
+package queries
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestQueryIsPermitted(t *testing.T) {
+	examples := []struct {
+		name     string
+		query    Query
+		args     []string
+		expected bool
+	}{
+		{
+			name:     "no input provided",
+			query:    makeQuery("localhost", "someuser", "somedb", "default"),
+			args:     makeArgs("", "", "", ""),
+			expected: false,
+		},
+		{
+			name:     "match on host",
+			query:    makeQuery("localhost", "*", "*", "*"),
+			args:     makeArgs("localhost", "user", "db", "default"),
+			expected: true,
+		},
+		{
+			name:     "match on full set",
+			query:    makeQuery("localhost", "user", "database", "mode"),
+			args:     makeArgs("localhost", "someuser", "somedb", "default"),
+			expected: false,
+		},
+		{
+			name:     "match on partial database",
+			query:    makeQuery("localhost", "*", "myapp_*", "*"),
+			args:     makeArgs("localhost", "user", "myapp_development", "default"),
+			expected: true,
+		},
+		{
+			name:     "match on full set but not mode",
+			query:    makeQuery("localhost", "*", "*", "readonly"),
+			args:     makeArgs("localhost", "user", "db", "default"),
+			expected: false,
+		},
+	}
+
+	for _, ex := range examples {
+		t.Run(ex.name, func(t *testing.T) {
+			result := ex.query.IsPermitted(ex.args[0], ex.args[1], ex.args[2], ex.args[3])
+			assert.Equal(t, ex.expected, result)
+		})
+	}
+}
+
+func makeArgs(vals ...string) []string {
+	return vals
+}
+
+func makeQuery(host, user, database, mode string) Query {
+	mustfield := func(input string) field {
+		f, err := newField(input)
+		if err != nil {
+			panic(err)
+		}
+		return f
+	}
+
+	return Query{
+		Meta: &Metadata{
+			Host:     mustfield(host),
+			User:     mustfield(user),
+			Database: mustfield(database),
+			Mode:     mustfield(mode),
+		},
+	}
+}

pkg/queries/store.go

@@ -0,0 +1,88 @@
+package queries
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+var (
+	ErrQueryDirNotExist  = errors.New("queries directory does not exist")
+	ErrQueryFileNotExist = errors.New("query file does not exist")
+)
+
+type Store struct {
+	dir string
+}
+
+func NewStore(dir string) *Store {
+	return &Store{
+		dir: dir,
+	}
+}
+
+func (s Store) Read(id string) (*Query, error) {
+	path := filepath.Join(s.dir, fmt.Sprintf("%s.sql", id))
+	return readQuery(path)
+}
+
+func (s Store) ReadAll() ([]Query, error) {
+	entries, err := os.ReadDir(s.dir)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			err = ErrQueryDirNotExist
+		}
+		return nil, err
+	}
+
+	queries := []Query{}
+
+	for _, entry := range entries {
+		name := entry.Name()
+		if filepath.Ext(name) != ".sql" {
+			continue
+		}
+
+		path := filepath.Join(s.dir, name)
+		query, err := readQuery(path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "[WARN] skipping %q query file due to error: %v\n", name, err)
+			continue
+		}
+		if query == nil {
+			continue
+		}
+
+		queries = append(queries, *query)
+	}
+
+	return queries, nil
+}
+
+func readQuery(path string) (*Query, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil, ErrQueryFileNotExist
+		}
+		return nil, err
+	}
+	dataStr := string(data)
+
+	meta, err := parseMetadata(dataStr)
+	if err != nil {
+		return nil, err
+	}
+	if meta == nil {
+		return nil, nil
+	}
+
+	return &Query{
+		ID:   strings.Replace(filepath.Base(path), ".sql", "", 1),
+		Path: path,
+		Meta: meta,
+		Data: sanitizeMetadata(dataStr),
+	}, nil
+}

pkg/queries/store_test.go

@@ -0,0 +1,71 @@
+//go:build !windows
+
+package queries
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStoreReadAll(t *testing.T) {
+	t.Run("valid dir", func(t *testing.T) {
+		queries, err := NewStore("../../data").ReadAll()
+		assert.NoError(t, err)
+		assert.Equal(t, 2, len(queries))
+	})
+
+	t.Run("invalid dir", func(t *testing.T) {
+		queries, err := NewStore("../../data2").ReadAll()
+		assert.Equal(t, err.Error(), "queries directory does not exist")
+		assert.Equal(t, 0, len(queries))
+	})
+}
+
+func TestStoreRead(t *testing.T) {
+	examples := []struct {
+		id    string
+		err   string
+		check func(*testing.T, *Query)
+	}{
+		{id: "foo", err: "query file does not exist"},
+		{id: "lc_no_meta"},
+		{id: "lc_invalid_meta", err: `invalid "mode" field value: "foo"`},
+		{
+			id: "lc_example1",
+			check: func(t *testing.T, q *Query) {
+				assert.Equal(t, "lc_example1", q.ID)
+				assert.Equal(t, "../../data/lc_example1.sql", q.Path)
+				assert.Equal(t, "select 'foo'", q.Data)
+				assert.Equal(t, "localhost", q.Meta.Host.String())
+				assert.Equal(t, "*", q.Meta.User.String())
+				assert.Equal(t, "*", q.Meta.Database.String())
+			},
+		},
+		{
+			id: "lc_example2",
+			check: func(t *testing.T, q *Query) {
+				assert.Equal(t, "lc_example2", q.ID)
+				assert.Equal(t, "../../data/lc_example2.sql", q.Path)
+				assert.Equal(t, "-- some comment\nselect 'foo'", q.Data)
+				assert.Equal(t, "localhost", q.Meta.Host.String())
+				assert.Equal(t, "foo", q.Meta.User.String())
+				assert.Equal(t, "*", q.Meta.Database.String())
+			},
+		},
+	}
+
+	store := NewStore("../../data")
+
+	for _, ex := range examples {
+		t.Run(ex.id, func(t *testing.T) {
+			query, err := store.Read(ex.id)
+			if ex.err != "" || err != nil {
+				assert.Equal(t, ex.err, err.Error())
+			}
+			if ex.check != nil {
+				ex.check(t, query)
+			}
+		})
+	}
+}

static/css/app.css

@@ -357,6 +357,7 @@
 #input .actions #query_progress {
   display: none;
   float: left;
+  font-size: 12px;
   line-height: 30px;
   height: 30px;
   color: #aaa;

static/index.html

@@ -87,6 +87,13 @@
               <li><a href="#" id="analyze">Analyze Query</a></li>
             </ul>
           </div>
+          <div id="load-query-dropdown" class="btn-group left" style="display: none">
+            <button id="load-local-query" type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" disabled="disabled">
+              Template <span class="caret"></span>
+            </button>
+            <ul class="dropdown-menu" role="menu">
+            </ul>
+          </div>
           <div id="query_progress">Please wait, query is executing...</div>
           <div class="pull-right">
             <span id="result-rows-count"></span>

static/js/app.js

@@ -178,6 +178,33 @@ function buildSchemaSection(name, objects) {
   return section;
 }
 
+function loadLocalQueries() {
+  if (!appFeatures.local_queries) return;
+
+  $("body").on("click", "a.load-local-query", function(e) {
+    var id = $(this).data("id");
+
+    apiCall("get", "/local_queries/" + id, {}, function(resp) {
+      editor.setValue(resp.query);
+      editor.clearSelection();
+    });
+  });
+
+  apiCall("get", "/local_queries", {}, function(resp) {
+    if (resp.error) return;
+
+    var container = $("#load-query-dropdown").find(".dropdown-menu");
+
+    resp.forEach(function(item) {
+      var title = item.title || item.id;
+      $("<li><a href='#' class='load-local-query' data-id='" + item.id + "'>" + title + "</a></li>").appendTo(container);
+    });
+
+    if (resp.length > 0) $("#load-local-query").prop("disabled", "");
+    $("#load-query-dropdown").show();
+  });
+}
+
 function loadSchemas() {
   $("#objects").html("");
 
@@ -738,13 +765,13 @@ function showActivityPanel() {
 }
 
 function showQueryProgressMessage() {
-  $("#run, #explain-dropdown-toggle, #csv, #json, #xml").prop("disabled", true);
+  $("#run, #explain-dropdown-toggle, #csv, #json, #xml, #load-local-query").prop("disabled", true);
   $("#explain-dropdown").removeClass("open");
   $("#query_progress").show();
 }
 
 function hideQueryProgressMessage() {
-  $("#run, #explain-dropdown-toggle, #csv, #json, #xml").prop("disabled", false);
+  $("#run, #explain-dropdown-toggle, #csv, #json, #xml, #load-local-query").prop("disabled", false);
   $("#query_progress").hide();
 }
 
@@ -1810,6 +1837,7 @@ $(document).ready(function() {
 
       connected = true;
       loadSchemas();
+      loadLocalQueries();
 
       $("#current_database").text(resp.current_database);
       $("#main").show();