blockstore setup/migrations, wavebase setup

This commit is contained in:
sawka 2024-05-12 09:52:12 -07:00
parent 79d6ac0403
commit da03fbe8f2
11 changed files with 389 additions and 8 deletions

9
db/db.go Normal file
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@ -0,0 +1,9 @@
// Copyright 2023, Command Line Inc.
// SPDX-License-Identifier: Apache-2.0
package db
import "embed"
//go:embed migrations-blockstore/*.sql
var BlockstoreMigrationFS embed.FS

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@ -0,0 +1,3 @@
DROP TABLE block_file;
DROP TABLE block_data;

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@ -0,0 +1,20 @@
CREATE TABLE db_block_file (
blockid varchar(36) NOT NULL,
name varchar(200) NOT NULL,
maxsize bigint NOT NULL,
circular boolean NOT NULL,
size bigint NOT NULL,
createdts bigint NOT NULL,
modts bigint NOT NULL,
meta json NOT NULL,
PRIMARY KEY (blockid, name)
);
CREATE TABLE db_block_data (
blockid varchar(36) NOT NULL,
name varchar(200) NOT NULL,
partidx int NOT NULL,
data blob NOT NULL,
PRIMARY KEY(blockid, name, partidx)
);

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@ -6,6 +6,8 @@ import { Greet } from "./bindings/main/GreetService.js";
import { Events } from "@wailsio/runtime";
import * as rx from "rxjs";
import "/public/style.less";
const jotaiStore = createStore();
const counterSubject = rx.interval(1000).pipe(rx.map((i) => i));
const timeAtom = jotai.atom("No time yet");

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@ -5,8 +5,6 @@ import * as React from "react";
import { createRoot } from "react-dom/client";
import { App } from "./app.tsx";
import "./public/style.less";
document.addEventListener("DOMContentLoaded", () => {
let reactElem = React.createElement(App, null, null);
let elem = document.getElementById("main");

15
go.mod
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@ -1,10 +1,16 @@
module thenextwave
module github.com/wavetermdev/thenextwave
go 1.22
toolchain go1.22.1
require github.com/wailsapp/wails/v3 v3.0.0-alpha.0
require (
github.com/golang-migrate/migrate/v4 v4.17.1
github.com/jmoiron/sqlx v1.4.0
github.com/mattn/go-sqlite3 v1.14.22
github.com/sawka/txwrap v0.1.2
github.com/wailsapp/wails/v3 v3.0.0-alpha.0
)
require (
dario.cat/mergo v1.0.0 // indirect
@ -21,7 +27,9 @@ require (
github.com/go-ole/go-ole v1.2.6 // indirect
github.com/godbus/dbus/v5 v5.1.0 // indirect
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
github.com/google/uuid v1.3.0 // indirect
github.com/google/uuid v1.4.0 // indirect
github.com/hashicorp/errwrap v1.1.0 // indirect
github.com/hashicorp/go-multierror v1.1.1 // indirect
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
github.com/kevinburke/ssh_config v1.2.0 // indirect
@ -40,6 +48,7 @@ require (
github.com/wailsapp/go-webview2 v1.0.9 // indirect
github.com/wailsapp/mimetype v1.4.1 // indirect
github.com/xanzy/ssh-agent v0.3.3 // indirect
go.uber.org/atomic v1.7.0 // indirect
golang.org/x/crypto v0.21.0 // indirect
golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df // indirect
golang.org/x/mod v0.12.0 // indirect

26
go.sum
View File

@ -1,5 +1,7 @@
dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk=
dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM=
@ -38,18 +40,29 @@ github.com/go-git/go-git/v5 v5.11.0 h1:XIZc1p+8YzypNr34itUfSvYJcv+eYdTnTvOZ2vD3c
github.com/go-git/go-git/v5 v5.11.0/go.mod h1:6GFcX2P3NM7FPBfpePbpLd21XxsgdAt+lKqXmCUiUCY=
github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY=
github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
github.com/godbus/dbus/v5 v5.1.0/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
github.com/golang-migrate/migrate/v4 v4.17.1 h1:4zQ6iqL6t6AiItphxJctQb3cFqWiSpMnX7wLTPnnYO4=
github.com/golang-migrate/migrate/v4 v4.17.1/go.mod h1:m8hinFyWBn0SA4QKHuKh175Pm9wjmxj3S2Mia7dbXzM=
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/google/uuid v1.4.0 h1:MtMxsa51/r9yyhkyLsVeVt0B+BGQZzpQiTQ4eHZ8bc4=
github.com/google/uuid v1.4.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e h1:Q3+PugElBCf4PFpxhErSzU3/PY5sFL5Z6rfv4AbGAck=
github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4gf13a4=
github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
@ -63,6 +76,8 @@ github.com/leaanthony/go-ansi-parser v1.6.1 h1:xd8bzARK3dErqkPFtoF9F3/HgN8UQk0ed
github.com/leaanthony/go-ansi-parser v1.6.1/go.mod h1:+vva/2y4alzVmmIEpk9QDhA7vLC5zKDTRwfZGOp3IWU=
github.com/leaanthony/u v1.1.0 h1:2n0d2BwPVXSUq5yhe8lJPHdxevE2qK5G99PMStMZMaI=
github.com/leaanthony/u v1.1.0/go.mod h1:9+o6hejoRljvZ3BzdYlVL0JYCwtnAsVuN9pVTQcaRfI=
github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
github.com/lmittmann/tint v1.0.4 h1:LeYihpJ9hyGvE0w+K2okPTGUdVLfng1+nDNVR4vWISc=
github.com/lmittmann/tint v1.0.4/go.mod h1:HIS3gSy7qNwGCj+5oRjAutErFBl4BzdQP6cJZ0NfMwE=
github.com/matryer/is v1.4.0 h1:sosSmIWwkYITGrxZ25ULNDeKiMNzFSr4V/eqBQP0PeE=
@ -72,6 +87,8 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
github.com/onsi/gomega v1.27.10 h1:naR28SdDFlqrG6kScpT8VWpu1xWY5nJRCF3XaYyBjhI=
github.com/onsi/gomega v1.27.10/go.mod h1:RsS8tutOdbdgzbPtzzATp12yT7kM5I5aElG3evPbQ0M=
github.com/pjbgf/sha1cd v0.3.0 h1:4D5XXmUUBUl/xQ6IjCkEAbqXskkq/4O7LmGn0AqMDs4=
@ -89,6 +106,8 @@ github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDN
github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
github.com/samber/lo v1.38.1 h1:j2XEAqXKb09Am4ebOg31SpvzUTTs6EN3VfgeLUhPdXM=
github.com/samber/lo v1.38.1/go.mod h1:+m/ZKRl6ClXCE2Lgf3MsQlWfh4bn1bz6CXEOxnEXnEA=
github.com/sawka/txwrap v0.1.2 h1:v8xS0Z1LE7/6vMZA81PYihI+0TSR6Zm1MalzzBIuXKc=
github.com/sawka/txwrap v0.1.2/go.mod h1:T3nlw2gVpuolo6/XEetvBbk1oMXnY978YmBFy1UyHvw=
github.com/sergi/go-diff v1.2.0 h1:XU+rvMAioB0UC3q1MFrIQy4Vo5/4VsRDQQXHsEya6xQ=
github.com/sergi/go-diff v1.2.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
@ -96,6 +115,7 @@ github.com/skeema/knownhosts v1.2.1 h1:SHWdIUa82uGZz+F+47k8SY4QhhI291cXCpopT1lK2
github.com/skeema/knownhosts v1.2.1/go.mod h1:xYbVRSPxqBZFrdmDyMmsOs+uX1UZC3nTN3ThzgDxUwo=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
@ -106,6 +126,8 @@ github.com/wailsapp/mimetype v1.4.1/go.mod h1:9aV5k31bBOv5z6u+QP8TltzvNGJPmNJD4X
github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM=
github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=

17
main.go
View File

@ -10,6 +10,9 @@ import (
"log"
"time"
"github.com/wavetermdev/thenextwave/pkg/blockstore"
"github.com/wavetermdev/thenextwave/pkg/wavebase"
"github.com/wailsapp/wails/v3/pkg/application"
)
@ -26,6 +29,18 @@ func (g *GreetService) Greet(name string) string {
}
func main() {
err := wavebase.EnsureWaveHomeDir()
if err != nil {
log.Printf("error ensuring wave home dir: %v\n", err)
return
}
log.Printf("wave home dir: %s\n", wavebase.GetWaveHomeDir())
err = blockstore.InitBlockstore()
if err != nil {
log.Printf("error initializing blockstore: %v\n", err)
return
}
app := application.New(application.Options{
Name: "NextWave",
Description: "The Next Wave Terminal",
@ -65,7 +80,7 @@ func main() {
}()
// blocking
err := app.Run()
err = app.Run()
// If an error occurred while running the application, log it and exit.
if err != nil {

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@ -0,0 +1,51 @@
// Copyright 2024, Command Line Inc.
// SPDX-License-Identifier: Apache-2.0
package blockstore
import (
"database/sql/driver"
"encoding/json"
)
type FileOptsType struct {
MaxSize int64
Circular bool
IJson bool
}
func (f *FileOptsType) Scan(value interface{}) error {
return json.Unmarshal(value.([]byte), f)
}
func (f FileOptsType) Value() (driver.Value, error) {
barr, err := json.Marshal(f)
if err != nil {
return nil, err
}
return string(barr), nil
}
type FileMeta map[string]any
func (m *FileMeta) Scan(value interface{}) error {
return json.Unmarshal(value.([]byte), m)
}
func (m FileMeta) Value() (driver.Value, error) {
barr, err := json.Marshal(m)
if err != nil {
return nil, err
}
return string(barr), nil
}
type BlockFile struct {
BlockId string `json:"blockid"`
Name string `json:"name"`
Size int64 `json:"size"`
CreatedTs int64 `json:"createdts"`
ModTs int64 `json:"modts"`
Opts FileOptsType `json:"opts"`
Meta FileMeta `json:"meta"`
}

162
pkg/blockstore/dbsetup.go Normal file
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@ -0,0 +1,162 @@
package blockstore
// setup for blockstore db
// includes migration support and txwrap setup
import (
"context"
"fmt"
"log"
"path"
"sync"
"time"
"github.com/wavetermdev/thenextwave/pkg/wavebase"
"github.com/golang-migrate/migrate/v4"
_ "github.com/golang-migrate/migrate/v4/database/sqlite3"
"github.com/golang-migrate/migrate/v4/source/iofs"
"github.com/jmoiron/sqlx"
_ "github.com/mattn/go-sqlite3"
"github.com/sawka/txwrap"
dbfs "github.com/wavetermdev/thenextwave/db"
)
const BlockstoreDbName = "blockstore.db"
type SingleConnDBGetter struct {
SingleConnLock *sync.Mutex
}
type TxWrap = txwrap.TxWrap
var dbWrap *SingleConnDBGetter = &SingleConnDBGetter{SingleConnLock: &sync.Mutex{}}
var globalDBLock = &sync.Mutex{}
var globalDB *sqlx.DB
var globalDBErr error
func InitBlockstore() error {
err := MigrateBlockstore()
if err != nil {
return err
}
ctx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
defer cancelFn()
_, err = GetDB(ctx)
if err != nil {
return err
}
log.Printf("blockstore initialized\n")
return nil
}
func GetDBName() string {
scHome := wavebase.GetWaveHomeDir()
return path.Join(scHome, BlockstoreDbName)
}
func GetDB(ctx context.Context) (*sqlx.DB, error) {
if txwrap.IsTxWrapContext(ctx) {
return nil, fmt.Errorf("cannot call GetDB from within a running transaction")
}
globalDBLock.Lock()
defer globalDBLock.Unlock()
if globalDB == nil && globalDBErr == nil {
dbName := GetDBName()
globalDB, globalDBErr = sqlx.Open("sqlite3", fmt.Sprintf("file:%s?cache=shared&mode=rwc&_journal_mode=WAL&_busy_timeout=5000", dbName))
if globalDBErr != nil {
globalDBErr = fmt.Errorf("opening db[%s]: %w", dbName, globalDBErr)
log.Printf("[db] error: %v\n", globalDBErr)
} else {
log.Printf("[db] successfully opened db %s\n", dbName)
}
}
return globalDB, globalDBErr
}
func (dbg *SingleConnDBGetter) GetDB(ctx context.Context) (*sqlx.DB, error) {
db, err := GetDB(ctx)
if err != nil {
return nil, err
}
dbg.SingleConnLock.Lock()
return db, nil
}
func (dbg *SingleConnDBGetter) ReleaseDB(db *sqlx.DB) {
dbg.SingleConnLock.Unlock()
}
func WithTx(ctx context.Context, fn func(tx *TxWrap) error) error {
return txwrap.DBGWithTx(ctx, dbWrap, fn)
}
func WithTxRtn[RT any](ctx context.Context, fn func(tx *TxWrap) (RT, error)) (RT, error) {
var rtn RT
txErr := WithTx(ctx, func(tx *TxWrap) error {
temp, err := fn(tx)
if err != nil {
return err
}
rtn = temp
return nil
})
return rtn, txErr
}
func MakeBlockstoreMigrate() (*migrate.Migrate, error) {
fsVar, err := iofs.New(dbfs.BlockstoreMigrationFS, "migrations-blockstore")
if err != nil {
return nil, fmt.Errorf("opening iofs: %w", err)
}
dbUrl := fmt.Sprintf("sqlite3://%s", GetDBName())
m, err := migrate.NewWithSourceInstance("iofs", fsVar, dbUrl)
if err != nil {
return nil, fmt.Errorf("making blockstore migration db[%s]: %w", GetDBName(), err)
}
return m, nil
}
func MigrateBlockstore() error {
log.Printf("migrate blockstore\n")
m, err := MakeBlockstoreMigrate()
if err != nil {
return err
}
curVersion, dirty, err := GetMigrateVersion(m)
if dirty {
return fmt.Errorf("cannot migrate up, database is dirty")
}
if err != nil {
return fmt.Errorf("cannot get current migration version: %v", err)
}
defer m.Close()
err = m.Up()
if err != nil && err != migrate.ErrNoChange {
return fmt.Errorf("migrating blockstore: %w", err)
}
newVersion, _, err := GetMigrateVersion(m)
if err != nil {
return fmt.Errorf("cannot get new migration version: %v", err)
}
if newVersion != curVersion {
log.Printf("[db] blockstore migration done, version %d -> %d\n", curVersion, newVersion)
}
return nil
}
func GetMigrateVersion(m *migrate.Migrate) (uint, bool, error) {
if m == nil {
var err error
m, err = MakeBlockstoreMigrate()
if err != nil {
return 0, false, err
}
}
curVersion, dirty, err := m.Version()
if err == migrate.ErrNilVersion {
return 0, false, nil
}
return curVersion, dirty, err
}

90
pkg/wavebase/wavebase.go Normal file
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@ -0,0 +1,90 @@
package wavebase
import (
"errors"
"fmt"
"io/fs"
"os"
"path"
"strings"
"sync"
)
const DefaultWaveHome = "~/.w2"
const WaveHomeVarName = "WAVETERM_HOME"
const WaveDevVarName = "WAVETERM_DEV"
const HomeVarName = "HOME"
var baseLock = &sync.Mutex{}
var ensureDirCache = map[string]bool{}
func IsDevMode() bool {
pdev := os.Getenv(WaveDevVarName)
return pdev != ""
}
func GetHomeDir() string {
homeVar := os.Getenv(HomeVarName)
if homeVar == "" {
return "/"
}
return homeVar
}
func ExpandHomeDir(pathStr string) string {
if pathStr != "~" && !strings.HasPrefix(pathStr, "~/") {
return pathStr
}
homeDir := GetHomeDir()
if pathStr == "~" {
return homeDir
}
return path.Join(homeDir, pathStr[2:])
}
func GetWaveHomeDir() string {
homeVar := os.Getenv(WaveHomeVarName)
if homeVar != "" {
return ExpandHomeDir(homeVar)
}
return ExpandHomeDir(DefaultWaveHome)
}
func EnsureWaveHomeDir() error {
return CacheEnsureDir(GetWaveHomeDir(), "wavehome", 0700, "wave home directory")
}
func CacheEnsureDir(dirName string, cacheKey string, perm os.FileMode, dirDesc string) error {
baseLock.Lock()
ok := ensureDirCache[cacheKey]
baseLock.Unlock()
if ok {
return nil
}
err := TryMkdirs(dirName, perm, dirDesc)
if err != nil {
return err
}
baseLock.Lock()
ensureDirCache[cacheKey] = true
baseLock.Unlock()
return nil
}
func TryMkdirs(dirName string, perm os.FileMode, dirDesc string) error {
info, err := os.Stat(dirName)
if errors.Is(err, fs.ErrNotExist) {
err = os.MkdirAll(dirName, perm)
if err != nil {
return fmt.Errorf("cannot make %s %q: %w", dirDesc, dirName, err)
}
info, err = os.Stat(dirName)
}
if err != nil {
return fmt.Errorf("error trying to stat %s: %w", dirDesc, err)
}
if !info.IsDir() {
return fmt.Errorf("%s %q must be a directory", dirDesc, dirName)
}
return nil
}