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WIP. Echo JWT broken?

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This commit is contained in:
William Gill
2025-01-12 00:41:13 -06:00
parent e0be116c74
commit 3e6b5d87b8
20 changed files with 1843 additions and 2 deletions
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# Binaries for programs and plugins
*.exe
*.dll
*.so
*.dylib
.idea/*
# Test binary, build with `go test -c`
*.test
# Output of the go coverage tool, specifically when used with LiteIDE
*.out
# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
.glide/
# dep related files and folders
/vendor*
# ignore logfiles (/* so the .gitkeep override works)
/logs/*
# ignore configuration file
/config.yml
# Ignore Vagrant stuff
/.vagrant
# Builds by gox
/build
# Go Coverage tool
/coverage.out
# The built executable
observatron
# IDE/Editor files (VS Code)
/.vscode
# test files
test_*/
# Keep all gitkeep files (This needs to stay at the bottom)
!.gitkeep
debug
.DS_Store
*.pprof
*.pdf
Dockerfile
CHANGELOG.md
Makefile
README.md
/dist

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# EditorConfig is awesome: https://EditorConfig.org
# top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file
[*]
end_of_line = lf
insert_final_newline = true
# Tab indentation
[*.go]
indent_style = tab
indent_size = 4

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name: Pull Request Labeler
on:
pull_request_target
jobs:
label:
runs-on: ubuntu-latest
steps:
- uses: actions/labeler@v3.0.2
with:
repo-token: "${{ secrets.TOKEN_GITHUB }}"

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name: Create Release & Upload Assets
on:
push:
# Sequence of patterns matched against refs/tags
tags:
- 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
env:
VERSION_TAG: '${{ github.ref_name }}'
CURL_TOKEN: '${{ secrets.TOKEN_GITEA }}'
jobs:
goreleaser:
name: Upload Assets To Gitea w/ goreleaser
runs-on: ubuntu-latest
steps:
-
name: Checkout
uses: actions/checkout@v4
with:
fetch-depth: 0
-
name: Set up Go
uses: actions/setup-go@v5
with:
go-version: 1.22
-
name: Run GoReleaser
uses: goreleaser/goreleaser-action@v6
with:
distribution: goreleaser
version: v1.26.2
args: release --clean
env:
GITEA_TOKEN: ${{ secrets.TOKEN_GITEA }}
GORELEASER_FORCE_TOKEN: gitea

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project_name: uberbringer
force_token: gitea
gitea_urls:
api: https://git.anomalous.dev/api/v1
download: https://git.anomalous.dev/
skip_tls_verify: false
before:
hooks:
# You may remove this if you don't use go modules.
- go mod download
- go mod tidy
- go mod vendor
# you may remove this if you don't need go generate
- go generate
builds:
-
id: uberbringer
env:
- CGO_ENABLED=0
goos:
- linux
goarch:
- amd64
- arm
- arm64
goarm:
- 6
- 7
main: ./uberbringer.go
binary: uberbringer
ldflags:
- -w -X git.anomalous.dev/57_Wolve/uberbringer/config.Version={{.Version}} -X git.anomalous.dev/57_Wolve/uberbringer/config.Build={{.ShortCommit}} -X git.anomalous.dev/57_Wolve/uberbringer/config.SentryDSN=https://70209de06de24662a0f43b47a99de86b@sentry.alphacentri.com/2
archives:
-
# Can be used to change the archive formats for specific GOOSs.
# Most common use case is to archive as zip on Windows.
# Default is empty.
name_template: "{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}{{ if .Mips }}_{{ .Mips }}{{ end }}"
format: 'tar'
format_overrides:
- goos: windows
format: zip
source:
enabled: true
name_template: '{{ .ProjectName }}_{{ .Version }}'
checksum:
name_template: 'checksums.txt'
release:
# Repo in which the release will be created.
# Default is extracted from the origin remote URL or empty if its private hosted.
# Note: it can only be one: either github, gitlab or gitea
gitea:
owner: 57_Wolve
name: uberbringer
draft: false
scoop:
url_template: "https://git.anomalous.dev/57_Wolve/uberbringer/releases/download/{{ .Tag }}/{{ .ArtifactName }}"
# Git author used to commit to the repository.
# Defaults are shown.
commit_author:
name: 57_Wolve
email: william.gill@anomalous.dev

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.idea/.gitignore generated vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

7
.idea/discord.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DiscordProjectSettings">
<option name="show" value="PROJECT_FILES" />
<option name="description" value="" />
</component>
</project>

8
.idea/modules.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/.idea/uberbringer.iml" filepath="$PROJECT_DIR$/.idea/uberbringer.iml" />
</modules>
</component>
</project>

9
.idea/uberbringer.iml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="WEB_MODULE" version="4">
<component name="Go" enabled="true" />
<component name="NewModuleRootManager">
<content url="file://$MODULE_DIR$" />
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

6
.idea/vcs.xml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>

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LICENSE.txt Normal file
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covered work, and grant a patent license to some of the parties
receiving the covered work authorizing them to use, propagate, modify
or convey a specific copy of the covered work, then the patent license
you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
specifically granted under this License. You may not convey a covered
work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
the work, and under which the third party grants, to any of the
parties who would receive the covered work from you, a discriminatory
patent license (a) in connection with copies of the covered work
conveyed by you (or copies made from those copies), or (b) primarily
for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.
Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.
12. No Surrender of Others' Freedom.
If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot convey a
covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all. For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote Network Interaction; Use with the GNU General Public License.
Notwithstanding any other provision of this License, if you modify the
Program, your modified version must prominently offer all users
interacting with it remotely through a computer network (if your version
supports such interaction) an opportunity to receive the Corresponding
Source of your version by providing access to the Corresponding Source
from a network server at no charge, through some standard or customary
means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3
of the GNU General Public License that is incorporated pursuant to the
following paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU General Public License into a single
combined work, and to convey the resulting work. The terms of this
License will continue to apply to the part which is the covered work,
but the work with which it is combined will remain governed by version
3 of the GNU General Public License.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU Affero General Public License from time to time. Such new versions
will be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the
Program specifies that a certain numbered version of the GNU Affero General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU Affero General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU Affero General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 2025 William Gill <william.gill@anomalous.dev>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

6
README.md
View File

@@ -1,3 +1,7 @@
# uberbringer # Überbringer
Bringer of information
EPOS Network Printer via REST API EPOS Network Printer via REST API
Just a fun little project to take a REST API input and generate an output to a network printer.

79
cmd/cmd.go Normal file
View File

@@ -0,0 +1,79 @@
package cmd
import (
"fmt"
"log"
"strconv"
"time"
"github.com/liamg/tml"
"github.com/spf13/cobra"
"git.anomalous.dev/57_Wolve/uberbringer/config"
"git.anomalous.dev/57_Wolve/uberbringer/service"
)
var rootCommand = &cobra.Command{
Use: "uberbringer",
Short: "Runs the Überbringer daemon.",
PreRun: func(cmd *cobra.Command, args []string) {
config.GetConfig()
startSplash()
},
Run: func(cmd *cobra.Command, args []string) {
startServer()
},
}
var versionCommand = &cobra.Command{
Use: "version",
Short: "Prints the current executable version and exits.",
Run: func(cmd *cobra.Command, _ []string) {
fmt.Printf("%s | Version: %s Build: %s | Copyright © %d William Gill\n", config.Project, config.Version, config.Build, time.Now().Year())
},
}
func Execute() {
if err := rootCommand.Execute(); err != nil {
log.Fatalf("failed to execute command: %s", err)
}
}
func init() {
rootCommand.PersistentFlags().StringVarP(&config.TOML, "config", "c", "config.toml", "Specify daemon config file.")
rootCommand.AddCommand(versionCommand)
}
func startSplash() {
//// ***** Start Console Splash ***** ////
tml.Printf("-----------------------------------------------------------------------------------------------\n\n")
tml.Printf("<bold> <lightblue>" + config.Project + " | Version: " + config.Version + " Build: " + config.Build + " | Copyright © " + strconv.Itoa(time.Now().Year()) + " William Gill</lightblue> <lightgreen> </bold>\n\n")
tml.Printf("<bold> <lightblue>Project:</lightblue> " + config.Project + "</bold>\n")
tml.Printf("<bold> <lightblue>Description:</lightblue> " + config.Description + "</bold>\n")
tml.Printf("<bold> <lightblue>Authors:</lightblue> " + config.Authors + "</bold>\n\n")
tml.Printf("-----------------------------------------------------------------------------------------------\n")
tml.Printf("<bold><cyan>[" + config.Project + "]: Initializing...</cyan></bold>\n")
//// ***** End Console Splash ***** ////
}
func startServer() {
//// ***** Start Echo ***** ////
tml.Printf("<bold><cyan>[" + config.Project + "]: Initializing Web Server...</cyan></bold>\n")
serverChannel := make(chan bool)
defer close(serverChannel)
// Start Web Server
go service.StartEcho(serverChannel, config.WebServerBindIP, config.WebServerPort)
// Stream Channel
serverData := <-serverChannel
fmt.Scanln(serverData)
//// ***** End Echo ***** ////
}

9
config.toml Normal file
View File

@@ -0,0 +1,9 @@
[webserver]
bind_ip = "127.0.0.1"
port = 8080
[api]
secret = "4ce3ea58ff83fd4e77a9b6031d24b103fcbc7e90889dc73846da7801fc75a52f"
[printer]
address = "192.168.1.245"

73
config/config.go Normal file
View File

@@ -0,0 +1,73 @@
package config
import (
"log"
"github.com/BurntSushi/toml"
"github.com/liamg/tml"
)
var TOML = ""
type (
Config struct {
WebServer struct {
Bind_IP string
Port int
}
API struct {
Secret string
}
Printer struct {
Address string
}
}
)
func GetConfig() {
tomlData := TOML
var configData Config
_, err := toml.DecodeFile(tomlData, &configData)
if err != nil {
tml.Printf("<bold><red>[" + Project + "]: Failed to open config file " + TOML + "</red></bold>\n")
log.Fatal("Exiting...", err)
}
data := &configData
JWT_Secret = data.API.Secret
WebServerBindIP = data.WebServer.Bind_IP
WebServerPort = data.WebServer.Port
PrinterAddr = data.Printer.Address
}
// Basic Information
const (
Project = "Überbringer"
Description = "EPSON Receipt Printer Server"
Authors = "https://git.anomalous.dev/57_Wolve/uberbringer"
)
var (
Version string
Build string
SentryDSN string
)
// Start Config
var (
WebServerBindIP string
WebServerPort int
)
var (
JWT_Secret string
)
var (
PrinterAddr string
)

107
go.sum Normal file
View File

@@ -0,0 +1,107 @@
github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/foize/go.fifo v0.0.0-20130327144150-3a04cfeec121 h1:4tcVl93sFQN4n6PYiJ6m11uypFWCpyybUpWV+HA7Fqg=
github.com/foize/go.fifo v0.0.0-20130327144150-3a04cfeec121/go.mod h1:FnCzb+rCPKo7SBHmZYaSca9ymfnSHqh1E8jZz460/t0=
github.com/getsentry/sentry-go v0.31.1 h1:ELVc0h7gwyhnXHDouXkhqTFSO5oslsRDk0++eyE0KJ4=
github.com/getsentry/sentry-go v0.31.1/go.mod h1:CYNcMMz73YigoHljQRG+qPF+eMq8gG72XcGN/p71BAY=
github.com/getsentry/sentry-go/echo v0.31.1 h1:bGY2QrNq5PovERoQBwyfJtQixjptHC06gLiAlF0WUPc=
github.com/getsentry/sentry-go/echo v0.31.1/go.mod h1:2gHa20EVxDNNTJY+Cq4Eqr8A0Z6UEULh4ImSsVMSRUg=
github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
github.com/go-errors/errors v1.4.2/go.mod h1:sIVyrIiJhuEF+Pj9Ebtd6P/rEYROXFi3BopGUQ5a5Og=
github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
github.com/justinmichaelvieira/escpos v0.1.1 h1:FzvdSWbuR/6tVt6UKXPAxtS+VM7XGxLWUWb9EM49zvo=
github.com/justinmichaelvieira/escpos v0.1.1/go.mod h1:BTLZkBKl4F53lYM/S635//HCltbEoUHuVfHHw+tC9os=
github.com/justinmichaelvieira/iconv v0.1.0 h1:nL7d7cHijfoBYHa804+5SvLwaWHO6+OFyJfWHrPnaOw=
github.com/justinmichaelvieira/iconv v0.1.0/go.mod h1:Mm+28owXWTkJx2w+ftVX/RUnzWK7hM1hyUYkrgUerts=
github.com/labstack/echo/v4 v4.13.3 h1:pwhpCPrTl5qry5HRdM5FwdXnhXSLSY+WE+YQSeCaafY=
github.com/labstack/echo/v4 v4.13.3/go.mod h1:o90YNEeQWjDozo584l7AwhJMHN0bOC4tAfg+Xox9q5g=
github.com/labstack/gommon v0.4.2 h1:F8qTUNXgG1+6WQmqoUWnz8WiEU60mXVVw0P4ht1WRA0=
github.com/labstack/gommon v0.4.2/go.mod h1:QlUFxVM+SNXhDL/Z7YhocGIBYOiwB0mXm1+1bAPHPyU=
github.com/liamg/tml v0.7.0 h1:0cVok661KuQy659aFpXpem8mXUDroREuWc1p/+y7hfU=
github.com/liamg/tml v0.7.0/go.mod h1:Vuzs4Dn44Awoyd0MLl2EuJR++l1NlFqU6BJk0oxVYX4=
github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
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/pingcap/errors v0.11.4 h1:lFuQV/oaUMGcD2tqt+01ROSmJs75VG1ToEOkZIZ4nE4=
github.com/pingcap/errors v0.11.4/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
github.com/valyala/fasttemplate v1.2.2/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
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 v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.33.0 h1:74SYHlV8BIgHIFC/LrYkOGIwL19eTYXQ5wc6TBuO36I=
golang.org/x/net v0.33.0/go.mod h1:HXLR5J+9DxmrqMwG9qjGCxZ+zKXxBru04zlTvWlWuN4=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/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 v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
golang.org/x/time v0.8.0 h1:9i3RxcPv3PZnitoVGMPDKZSq1xW1gK1Xy3ArNOGZfEg=
golang.org/x/time v0.8.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

135
service/printer.go Normal file
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package service
import (
"git.anomalous.dev/57_Wolve/uberbringer/config"
fifo "github.com/foize/go.fifo"
"github.com/justinmichaelvieira/escpos"
"github.com/liamg/tml"
"net"
)
type Queue struct {
Data []Item `json:"data"`
}
type QueueItem struct {
JobID string
SequenceNumber int
Type int
Bold bool
Size int
Text string
}
// constructor function
func (std *QueueItem) fillDefaults() {
// setting default values
// if no values present
if std.JobID == "" {
std.JobID = "000000000000000000"
}
if std.SequenceNumber == 0 {
std.SequenceNumber = 0
}
if std.Type == 0 {
std.Type = 0
}
if std.Bold == false {
std.Bold = false
}
if std.Size == 0 {
std.Size = 1
}
if std.Text == "" {
std.Text = "NULL"
}
}
func newPrintJob(input DataStruct, queue *fifo.Queue) {
var byteLength int
for _, item := range input.Data {
byteLength += len(item.Text)
}
if byteLength > 4096 {
tml.Printf("<red>[" + config.Project + "]: Job #" + input.JobID + " buffer limit reached</red>\n")
return
} else {
tml.Printf("<blue>[" + config.Project + "]: Job #" + input.JobID + " buffer size used " + string(byteLength) + " bytes </blue>\n")
}
printJobCreate(input, queue)
}
func printJobCreate(input DataStruct, queue *fifo.Queue) {
tml.Printf("<yellow>[" + config.Project + "]: Adding job #" + input.JobID + " to print queue</yellow>\n")
socket, err := net.Dial("tcp", config.PrinterAddr+":9100")
if err != nil {
println(err.Error())
}
defer func(socket net.Conn) {
err := socket.Close()
if err != nil {
println(err.Error())
}
}(socket)
p := escpos.New(socket)
p.SetConfig(escpos.ConfigEpsonTMT20II)
p.Initialize()
p.DefaultLineSpacing()
for i, item := range input.Data {
var SeqNum = i + 1
tml.Printf("<darkgrey>[" + config.Project + "]: Job #" + input.JobID + " - creating command " + string(SeqNum) + "</darkgrey>\n")
if item.Type <= 0 || item.Type > 5 {
tml.Printf("<red>[" + config.Project + "]: Job #" + input.JobID + " bad type</red>\n")
return
} else if item.Size <= 0 || item.Size > 16 {
tml.Printf("<red>[" + config.Project + "]: Job #" + input.JobID + " bad size</red>\n")
return
} else {
switch item.Type {
case 1:
// Generate Regular Text
p.Bold(false).Size(uint8(item.Size), uint8(item.Size)).Write(item.Text)
case 2:
// Generate Bold Text
p.Bold(true).Size(uint8(item.Size), uint8(item.Size)).Write(item.Text)
case 3:
// Generate QR Code
p.QRCode(item.Text, true, uint8(item.Size), escpos.QRCodeErrorCorrectionLevelH)
case 4:
// New Line
p.LineFeed()
case 5:
// New Line X amount of times
p.LineFeedD(uint8(item.Size))
}
tml.Printf("<green>[" + config.Project + "]: Job #" + input.JobID + " good type</green>\n")
}
}
tml.Printf("<yellow>[" + config.Project + "]: Printing job #" + input.JobID + "</yellow>\n")
p.LineFeed()
err = p.PrintAndCut()
if err != nil {
println(err.Error())
}
tml.Printf("<green>[" + config.Project + "]: Done printing #" + input.JobID + "</green>\n")
}

189
service/webserver.go Normal file
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package service
import (
fifo "github.com/foize/go.fifo"
sentryecho "github.com/getsentry/sentry-go/echo"
"github.com/golang-jwt/jwt/v5"
"github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
"golang.org/x/time/rate"
"log"
"net/http"
"strconv"
"time"
"git.anomalous.dev/57_Wolve/uberbringer/config"
"git.anomalous.dev/57_Wolve/uberbringer/snowflake"
)
type InputData struct {
Data []Item `json:"data"`
}
type DataStruct struct {
JobID string `json:"job"`
Data []Item `json:"data"`
}
type Item struct {
Type int `json:"type"`
Size int `json:"size"`
Text string `json:"text"`
}
type jwtCustomClaims struct {
jwt.RegisteredClaims
}
func StartEcho(server chan bool, webserver_addr string, webserver_port int) {
queue := fifo.NewQueue()
// Start Echo
e := echo.New()
e.Use(middleware.Logger())
e.Use(middleware.Recover())
e.Use(middleware.RateLimiter(middleware.NewRateLimiterMemoryStore(rate.Limit(1))))
// Echo GZIP
e.Use(middleware.GzipWithConfig(middleware.GzipConfig{
Level: 3,
}))
// Echo Request ID
e.Use(middleware.RequestIDWithConfig(middleware.RequestIDConfig{
Generator: func() string {
var idGeneratorSettings *snowflake.Settings
// build snowflake using the IdGenerator API
idGeneratorSettings = &snowflake.Settings{}
idGeneratorSettings.StartTime = time.Date(2016, 1, 1, 0, 0, 0, 0, time.UTC)
SnowFlakeID, err := snowflake.GenerateID(idGeneratorSettings)
if err != nil {
log.Println(err)
}
return strconv.FormatUint(SnowFlakeID.List[0], 10)
},
}))
// Once it's done, you can attach the handler as one of your middleware
e.Use(sentryecho.New(sentryecho.Options{
Repanic: true,
}))
// API Routes
// API Version 1
api_v1 := e.Group("/api/v1")
// Echo JWT - Won't accept valid keys? Bug To-Do
/*
api_v1.Use(echojwt.WithConfig(echojwt.Config{
SigningKey: []byte(config.JWT_Secret),
SigningMethod: "HS256",
TokenLookup: "header:Authorization:Bearer ,query:token, param:token",
ContextKey: "User",
NewClaimsFunc: func(c echo.Context) jwt.Claims {
return new(jwtCustomClaims)
},
}))
*/
api_v1.POST("/print", func(c echo.Context) error {
var idGeneratorSettings *snowflake.Settings
idGeneratorSettings = &snowflake.Settings{}
idGeneratorSettings.StartTime = time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)
SnowFlakeID, err := snowflake.GenerateID(idGeneratorSettings)
if err != nil {
log.Println(err)
}
var printJob string
printJob = strconv.FormatUint(SnowFlakeID.List[0], 10)
data := new(InputData)
if err := c.Bind(data); err != nil {
return c.String(http.StatusBadRequest, "bad request")
}
// Load into separate struct for security
toPrint := DataStruct{
JobID: printJob,
}
toPrint.Data = data.Data
printJobCreate(toPrint, queue)
return c.String(http.StatusOK, "OK - "+printJob)
})
e.POST("/login", func(c echo.Context) error {
username := c.FormValue("username")
password := c.FormValue("password")
// Throws unauthorized error
if username != "test" || password != "login" {
return echo.ErrUnauthorized
}
// Set custom claims
claims := &jwtCustomClaims{
jwt.RegisteredClaims{
ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Hour * 72)),
},
}
// Create token with claims
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
// Generate encoded token and send it as response.
t, err := token.SignedString([]byte("secret"))
if err != nil {
return err
}
return c.JSON(http.StatusOK, echo.Map{
"token": t,
})
}).Name = "Login"
e.GET("/robots.txt", func(c echo.Context) error {
return c.String(http.StatusOK, "User-agent: *\nDisallow:\n")
})
e.GET("/", func(c echo.Context) error {
// Project Information
type ProjectInformation struct {
Project string `json:"Project" xml:"Project"`
Description string `json:"Description" xml:"Description"`
Authors string `json:"Authors" xml:"Authors"`
Version string `json:"Version" xml:"Version"`
Build string `json:"Build" xml:"Build"`
}
// Build Response
Response := &ProjectInformation{
Project: string(config.Project),
Description: string(config.Description),
Authors: string(config.Authors),
Version: string(config.Version),
Build: string(config.Build),
}
// Return Response
return c.JSONPretty(http.StatusOK, Response, " ")
}).Name = "Base"
e.Logger.Fatal(e.Start(webserver_addr + ":" + strconv.Itoa(webserver_port)))
server <- true
}

311
snowflake/snowflake.go Normal file
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package snowflake
import (
"errors"
"io/ioutil"
"log"
"net"
"net/http"
"os"
"sync"
"time"
)
// These constants are the bit lengths of SnowFlake ID parts.
const (
BitLenTime = 39 // bit length of time
BitLenMachineID = 63 - BitLenTime - BitLenSequence // bit length of machine id (16 bits)
BitLenSequence = 8 // bit length of sequence number
)
// Settings configures SnowFlake:
//
// StartTime is the time since which the SnowFlake time is defined as the elapsed time.
// If StartTime is 0, the start time of the SnowFlake is set to "2014-09-01 00:00:00 +0000 UTC".
// If StartTime is ahead of the current time, SnowFlake is not created.
//
// MachineID returns the unique ID of the SnowFlake instance.
// If MachineID returns an error, SnowFlake is not created.
// If MachineID is nil, default MachineID is used.
// Default MachineID returns the lower 16 bits of the private IP address.
//
// CheckMachineID validates the uniqueness of the machine ID.
// If CheckMachineID returns false, SnowFlake is not created.
// If CheckMachineID is nil, no validation is done.
type Settings struct {
StartTime time.Time
MachineID func() (uint16, error)
CheckMachineID func(uint16) bool
}
// SnowFlake is a distributed unique ID generator.
type SnowFlake struct {
mutex *sync.Mutex
startTime int64
recentTime int64 // most recent time when this snowflake was used
sequence uint16
machineID uint16
}
type IDList struct {
List []uint64 `json:"id_list"`
MachineId uint16 `json:"machine_id"`
}
func initSnowFlake(st *Settings) *SnowFlake {
if st == nil {
st = &Settings{}
// Default start-time is the Jan 01, 2014 and the ID generator should work for 174 yeard from then
st.StartTime = time.Date(2014, 1, 1, 0, 0, 0, 0, time.UTC)
}
sf := NewSnowFlake(*st)
if sf == nil {
log.Println("snowFlake not created")
}
return sf
}
func GenerateID(settings *Settings) (*IDList, error) {
snowFlake := initSnowFlake(settings)
ids, err := snowFlake.NextIDs()
if err != nil {
return nil, err
}
idList := &IDList{List: ids, MachineId: snowFlake.machineID}
return idList, nil
}
// NewSnowFlake returns a new SnowFlake configured with the given Settings.
// NewSnowFlake returns nil in the following cases:
// - Settings.StartTime is ahead of the current time.
// - Settings.MachineID returns an error.
// - Settings.CheckMachineID returns false.
func NewSnowFlake(st Settings) *SnowFlake {
sf := new(SnowFlake)
sf.mutex = new(sync.Mutex)
// why is it set to max value ?
sf.sequence = uint16(1<<BitLenSequence - 1)
if st.StartTime.After(time.Now()) {
return nil
}
if st.StartTime.IsZero() {
sf.startTime = toSnowFlakeTime(time.Date(2014, 9, 1, 0, 0, 0, 0, time.UTC))
} else {
sf.startTime = toSnowFlakeTime(st.StartTime)
}
var err error
if st.MachineID == nil {
sf.machineID, err = lower16BitPrivateIP()
} else {
sf.machineID, err = st.MachineID()
}
if err != nil || (st.CheckMachineID != nil && !st.CheckMachineID(sf.machineID)) {
return nil
}
return sf
}
// elapsedTime, machine-id and sequence
func (sf *SnowFlake) NextIDs() ([]uint64, error) {
sf.mutex.Lock()
defer sf.mutex.Unlock()
//sf.elapsedTime = currentElapsedTime(sf.startTime)
sf.validateTime()
sf.sequence = 0
const maxSequence = uint16(1<<BitLenSequence - 1)
idList := make([]uint64, 0, maxSequence+1)
for sf.sequence <= maxSequence {
id, err := sf.toID()
if err != nil {
return nil, err
}
idList = append(idList, id)
sf.sequence = (sf.sequence + 1)
}
return idList, nil
}
// NextID generates a next unique ID.
// After the SnowFlake time overflows, NextID returns an error.
// ONLY USED in Testing ??
func (sf *SnowFlake) NextID() (uint64, error) {
sf.mutex.Lock()
defer sf.mutex.Unlock()
sf.validateTime()
return sf.toID()
}
// checks if the current time (time elapsed since the start of this snowflake instances start) is less than the most recent
// snowflake time. If the recentTime is less than the current time -- meaning the id has not been generated in a while --
// update the recent time to current time and set the sequence to 0. The sequence is set to zero since new ids will be generated in this time.
// if recentTime time is equal to or greater than current time -- find the number of ids that have already been generated by updating the sequence.
// if the ids is 0 -- meaning all ids at the current time has been generated -- sleep for the time until the next time slot is available
func (sf *SnowFlake) validateTime() {
current := currentElapsedTime(sf.startTime)
if sf.recentTime < current {
// this is only executed the first time
// this will be executed if the elapsedTime is not set correctly to current time
sf.recentTime = current
sf.sequence = 0
} else if sf.recentTime == current {
const maskSequence = uint16(1<<BitLenSequence - 1)
sf.sequence = (sf.sequence + 1) & maskSequence
if sf.sequence == 0 {
sf.recentTime++
overtime := sf.recentTime - current
time.Sleep(sleepTime((overtime)))
}
} else {
log.Fatal("recent time can never be greater than current time")
}
}
func (sf *SnowFlake) NextIDRange() (uint64, uint64, error) {
sf.mutex.Lock()
defer sf.mutex.Unlock()
sf.validateTime()
lower, err := sf.toID()
if err != nil {
return 0, 0, err
}
sf.sequence = uint16(1<<BitLenSequence - 1)
upper, err := sf.toID()
if err != nil {
return 0, 0, err
}
return lower, upper, nil
}
const snowFlakeTimeUnitScaleFactor = 1e7 // nsec, i.e. 10 msec convert unit of nano-sec to 10 msec.
func toSnowFlakeTime(t time.Time) int64 {
return t.UTC().UnixNano() / snowFlakeTimeUnitScaleFactor
}
func currentElapsedTime(startTime int64) int64 {
return toSnowFlakeTime(time.Now()) - startTime
}
func sleepTime(overtime int64) time.Duration {
return time.Duration(overtime)*10*time.Millisecond -
time.Duration(time.Now().UTC().UnixNano()%snowFlakeTimeUnitScaleFactor)*time.Nanosecond
}
func (sf *SnowFlake) toID() (uint64, error) {
if sf.recentTime >= 1<<BitLenTime {
return 0, errors.New("over the time limit")
}
// Time-Sequence-MachineID
//return uint64(sf.elapsedTime)<<(BitLenSequence+BitLenMachineID) |
// uint64(sf.sequence)<<BitLenMachineID |
// uint64(sf.machineID), nil
// Time-MachineID-Sequence
return uint64(sf.recentTime)<<(BitLenSequence+BitLenMachineID) |
uint64(sf.machineID)<<BitLenSequence |
uint64(sf.sequence), nil
}
func privateIPv4() (net.IP, error) {
as, err := net.InterfaceAddrs()
if err != nil {
return nil, err
}
for _, a := range as {
ipnet, ok := a.(*net.IPNet)
if !ok || ipnet.IP.IsLoopback() {
continue
}
ip := ipnet.IP.To4()
if isPrivateIPv4(ip) {
return ip, nil
}
}
return nil, errors.New("no private ip address")
}
func amazonEC2PrivateIPv4() (net.IP, error) {
// URL to retrieve instance metadata in an AWS EC2 instance:
// http://docs.aws.amazon.com/en_us/AWSEC2/latest/UserGuide/ec2-instance-metadata.html
timeout := time.Duration(10 * time.Millisecond)
client := http.Client{
Timeout: timeout,
}
res, err := client.Get("http://169.254.169.254/latest/meta-data/local-ipv4")
if err != nil {
return nil, err
}
defer res.Body.Close()
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
ip := net.ParseIP(string(body))
if ip == nil {
return nil, errors.New("invalid ip address")
}
return ip.To4(), nil
}
func k8sPodIPFromEnvVariable() (net.IP, error) {
podIpEnvVarKey := "UNIQUE_ID_POD_IP"
podIpStr := os.Getenv(podIpEnvVarKey)
if podIpStr == "" {
return nil, errors.New("Env Variable Not Present")
}
ip := net.ParseIP(podIpStr)
if ip == nil {
return nil, errors.New("invalid ip address")
}
return ip.To4(), nil
}
func isPrivateIPv4(ip net.IP) bool {
return ip != nil &&
(ip[0] == 10 || ip[0] == 172 && (ip[1] >= 16 && ip[1] < 32) || ip[0] == 192 && ip[1] == 168)
}
func lower16BitPrivateIP() (uint16, error) {
ip, err := k8sPodIPFromEnvVariable()
if err != nil {
ip, err = amazonEC2PrivateIPv4()
}
if err != nil {
ip, err = privateIPv4()
}
if err != nil {
return 0, err
}
return uint16(ip[2])<<8 + uint16(ip[3]), nil
}
// Decompose returns a set of SnowFlake ID parts.
// Time-MachineID-Sequence
func decompose(id uint64) map[string]uint64 {
// const maskSequence = uint64((1<<BitLenSequence - 1) << BitLenMachineID)
const maskSequence = uint64((1<<BitLenSequence - 1))
//const maskMachineID = uint64(1<<BitLenMachineID - 1)
const maskMachineID = uint64((1<<BitLenMachineID - 1) << BitLenSequence)
msb := id >> 63
time := id >> (BitLenSequence + BitLenMachineID)
//sequence := id & maskSequence >> BitLenMachineID
sequence := id & maskSequence
machineID := id & maskMachineID >> BitLenSequence
return map[string]uint64{
"id": id,
"msb": msb,
"time": time,
"sequence": sequence,
"machine-id": machineID,
}
}

55
uberbringer.go Normal file
View File

@@ -0,0 +1,55 @@
package main
import (
"log"
"net/http"
"time"
"git.anomalous.dev/57_Wolve/uberbringer/cmd"
"git.anomalous.dev/57_Wolve/uberbringer/config"
"github.com/getsentry/sentry-go"
"github.com/liamg/tml"
)
func main() {
//// ***** Start Sentry ***** ////
tml.Printf("<bold><cyan>[" + config.Project + "]: Initializing Error Reporting...</cyan></bold>\n")
sentrySyncTransport := sentry.NewHTTPSyncTransport()
sentrySyncTransport.Timeout = time.Second * 3
err := sentry.Init(sentry.ClientOptions{
// Either set your DSN here or set the SENTRY_DSN environment variable.
Dsn: config.SentryDSN,
// Either set environment and release here or set the SENTRY_ENVIRONMENT
// and SENTRY_RELEASE environment variables.
Environment: "Production",
Release: config.Project + "@" + config.Version,
// Enable printing of SDK debug messages.
Debug: true,
// Useful when getting started or trying to figure something out.
AttachStacktrace: true,
Transport: sentrySyncTransport,
BeforeSend: func(event *sentry.Event, hint *sentry.EventHint) *sentry.Event {
if hint.Context != nil {
if req, ok := hint.Context.Value(sentry.RequestContextKey).(*http.Request); ok {
// You have access to the original Request
log.Println(req)
}
}
log.Println(event)
return event
},
})
if err != nil {
log.Fatalf("["+config.Project+"]: Sentry initialization failed: %v\n", err)
}
// Flush buffered events before the program terminates.
// Set the timeout to the maximum duration the program can afford to wait.
defer sentry.Flush(2 * time.Second)
//// ***** End Sentry ***** ////
cmd.Execute()
}