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Commit b3037240 authored by Fgoodwin's avatar Fgoodwin Committed by Eevans
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Importing Go service scaffolding

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Makefile
View file @ b3037240
# Copyright 2021 Nikki Nikkhoui <nnikkhoui@wikimedia.org> and Wikimedia Foundation
#
# 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.
APPNAME = aqs
VERSION = $(shell /usr/bin/git describe --always)
BUILD_DATE = $(shell date -u +%Y-%m-%dT%T:%Z)
HOSTNAME = $(shell hostname)
CONFIG ?= config.yaml
GO_LDFLAGS = -X main.version=$(if $(VERSION),$(VERSION),unknown)
GO_LDFLAGS += -X main.buildDate=$(if $(BUILD_DATE),$(BUILD_DATE),unknown)
GO_LDFLAGS += -X main.buildHost=$(if $(HOSTNAME),$(HOSTNAME),unknown)
all: startup
......@@ -21,3 +46,23 @@ shutdown:
.PHONY: all bootstrap cqlsh load schema startup shutdown
build:
@echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
@echo "VERSION ......: $(VERSION)"
@echo "BUILD HOST ...: $(HOSTNAME)"
@echo "BUILD DATE ...: $(BUILD_DATE)"
@echo "GO VERSION ...: $(word 3, $(shell go version))"
@echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
go build -ldflags "$(GO_LDFLAGS)" -o $(APPNAME) .
run:
go run -ldflags "$(GO_LDFLAGS)" . -config $(CONFIG)
test:
echo "Not implemented"
clean:
rm -f $(APPNAME)
.PHONY: build run test clean
blubber.yaml 0 → 100644
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version: v4
base: docker-registry.wikimedia.org/golang:1.14-1
lives:
in: /srv/service/
variants:
build:
apt: { packages: [build-essential] }
copies: [local]
entrypoint: [make, build]
development:
includes: [build]
apt: { packages: [ca-certificates] }
entrypoint: [make, run]
test:
includes: [build]
apt: { packages: [ca-certificates] }
entrypoint: [make, test]
prep:
includes: [build]
production:
copies: [prep]
entrypoint: [make, run]
config.go 0 → 100644
View file @ b3037240
/*
* Copyright 2021 Nikki Nikkhoui <nnikkhoui@wikimedia.org>, Eric Evans <eevans@wikimedia.org>,
* and Wikimedia Foundation
*
* 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 main
import (
"fmt"
"io/ioutil"
"strings"
yaml "gopkg.in/yaml.v2"
)
// Config represents an application-wide configuration.
type Config struct {
ServiceName string `yaml:"service_name"`
BaseURI string `yaml:"base_uri"`
Address string `yaml:"listen_address"`
Port int `yaml:"listen_port"`
LogLevel string `yaml:"log_level"`
}
// NewConfig returns a new Config from YAML serialized as bytes.
func NewConfig(data []byte) (*Config, error) {
// Populate a new Config with sane defaults
config := Config{
ServiceName: "service-scaffold-golang",
BaseURI: "/v0",
Address: "localhost",
Port: 8080,
LogLevel: "info",
}
err := yaml.Unmarshal(data, &config)
if err != nil {
return nil, err
}
return validate(&config)
}
// Returns a new Config from a YAML file.
func ReadConfig(filename string) (*Config, error) {
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return NewConfig(data)
}
// validateLogLevel ensures a valid log level
func validateLogLevel(config *Config) error {
switch strings.ToUpper(config.LogLevel) {
case "DEBUG", "INFO", "WARNING", "ERROR", "FATAL":
return nil
}
return fmt.Errorf("Unsupported log level: %s", config.LogLevel)
}
func validate(config *Config) (*Config, error) {
// Validate log level
if !strings.HasPrefix(config.BaseURI, "/") {
config.BaseURI = "/" + config.BaseURI
}
if err := validateLogLevel(config); err != nil {
return nil, err
}
return config, nil
}
config.yaml 0 → 100644
View file @ b3037240
# Copyright 2021 Nikki Nikkhoui <nnikkhoui@wikimedia.org> and Wikimedia Foundation
#
# 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.
# The name of this service (as it appears in logs)
service_name: scaffold-demo
# A constant prepended to all URIs
base_uri: /v0
# The IP interface and port to bind the service to
listen_address: localhost
listen_port: 8080
# Log level, one of (in increasing severity): debug, info, warning, error and fatal
log_level: debug
echo.go 0 → 100644
View file @ b3037240
/*
* Copyright 2021 Nikki Nikkhoui <nnikkhoui@wikimedia.org> and Wikimedia Foundation
*
* 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 main
import (
"encoding/json"
"io/ioutil"
"net/http"
"time"
"github.com/eevans/servicelib-golang/logger"
"schneider.vip/problem"
)
// Echo represents the JSON object sent as the body of the POST, as well as the
// the one that is echoed back in the response.
type Echo struct {
Message string `json:"message"`
Timestamp string `json:"timestamp"`
}
// EchoHandler is an http.Handler that implements an echo service endpoint.
type EchoHandler struct {
Logger *logger.Logger
}
func (s *EchoHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
var echoBody []byte
var echoResponse = Echo{}
var err error
var response []byte
if r.Method != "POST" {
problem.New(
problem.Status(http.StatusMethodNotAllowed),
problem.Detail("Method Not Allowed"),
).WriteTo(w)
return
}
if echoBody, err = ioutil.ReadAll(r.Body); err != nil {
problem.New(
problem.Status(http.StatusBadRequest),
problem.Detail("Unable to read response body"),
).WriteTo(w)
return
}
if len(echoBody) < 1 {
problem.New(
problem.Status(http.StatusBadRequest),
problem.Detail("Body must include `message`"),
).WriteTo(w)
return
}
if err = json.Unmarshal(echoBody, &echoResponse); err != nil {
problem.New(
problem.Status(http.StatusBadRequest),
problem.Detail("Invalid JSON"),
).WriteTo(w)
return
}
echoResponse.Timestamp = time.Now().Format(time.RFC3339)
if response, err = json.MarshalIndent(echoResponse, "", " "); err != nil {
s.Logger.Request(r).Log(logger.ERROR, "Unable to echo: %s", err)
problem.New(
problem.Status(http.StatusInternalServerError),
problem.Detail("Unable to echo"),
).WriteTo(w)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(response)
}
echo_test.go 0 → 100644
View file @ b3037240
/*
* Copyright 2021 Nikki Nikkhoui <nnikkhoui@wikimedia.org> and Wikimedia Foundation
*
* 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 main
import (
"bytes"
"encoding/json"
"errors"
"io"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type httperr struct {
Status int
Detail string
}
func TestInvalidMethod(t *testing.T) {
req, err := http.NewRequest("GET", "/v0/echo", nil)
require.NoError(t, err)
rr := httptest.NewRecorder()
handler := EchoHandler{}
handler.ServeHTTP(rr, req)
assert.Equal(t, http.StatusMethodNotAllowed, rr.Code, "Incorrect status code thrown")
res := rr.Result().Body
body, _ := io.ReadAll(res)
e := httperr{}
err = json.Unmarshal(body, &e)
require.NoError(t, err)
assert.Equal(t, e.Status, http.StatusMethodNotAllowed, "Incorrect status code delivered to client")
assert.Equal(t, e.Detail, "Method Not Allowed", "Incorrect detail delivered to client")
}
func TestEmptyBody(t *testing.T) {
req, err := http.NewRequest("POST", "/v0/echo", strings.NewReader(""))
require.NoError(t, err)
rr := httptest.NewRecorder()
handler := EchoHandler{}
handler.ServeHTTP(rr, req)
assert.Equal(t, http.StatusBadRequest, rr.Code, "Incorrect status code thrown")
res := rr.Result().Body
body, _ := io.ReadAll(res)
e := httperr{}
err = json.Unmarshal(body, &e)
require.NoError(t, err)
assert.Equal(t, e.Status, http.StatusBadRequest, "Incorrect status code delivered to client")
assert.Equal(t, e.Detail, "Body must include `message`", "Incorrect detail delivered to client")
}
func TestInvalidJSON(t *testing.T) {
req, err := http.NewRequest("POST", "/v0/echo", strings.NewReader("bad req body"))
require.NoError(t, err)
rr := httptest.NewRecorder()
handler := EchoHandler{}
handler.ServeHTTP(rr, req)
assert.Equal(t, http.StatusBadRequest, rr.Code, "Incorrect status code returned")
res := rr.Result().Body
body, _ := io.ReadAll(res)
e := httperr{}
err = json.Unmarshal(body, &e)
require.NoError(t, err)
assert.Equal(t, e.Status, http.StatusBadRequest, "Incorrect status code delivered to client")
assert.Equal(t, e.Detail, "Invalid JSON", "Incorrect detail delivered to client")
}
type errReader int
func (errReader) Read(p []byte) (n int, err error) {
return 0, errors.New("test error")
}
func TestFailedBody(t *testing.T) {
req, err := http.NewRequest("POST", "/v0/echo", errReader(0))
require.NoError(t, err)
rr := httptest.NewRecorder()
handler := EchoHandler{}
handler.ServeHTTP(rr, req)
assert.Equal(t, http.StatusBadRequest, rr.Code, "Incorrect status code returned")
res := rr.Result().Body
body, _ := io.ReadAll(res)
e := httperr{}
err = json.Unmarshal(body, &e)
require.NoError(t, err)
assert.Equal(t, e.Status, http.StatusBadRequest, "Incorrect status code delivered to client")
assert.Equal(t, e.Detail, "Unable to read response body", "Incorrect detail delivered to client")
}
func TestEcho(t *testing.T) {
msg, _ := json.Marshal(Echo{Message: "echo"})
req, err := http.NewRequest("POST", "/v0/echo",