move config to main / decentralize config

This puts config in its relevant location and moves functions around
loading config files into the main package.

As a side effect of removing cyclic imports for the API config, the
context library is no longer used.

api/api.go

@@ -23,29 +23,37 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/coreos/pkg/capnslog"
 	"github.com/tylerb/graceful"
 
-	"github.com/coreos/clair/api/context"
+	"github.com/coreos/clair/database"
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/pkg/stopper"
-	"github.com/coreos/pkg/capnslog"
 )
 
 const timeoutResponse = `{"Error":{"Message":"Clair failed to respond within the configured timeout window.","Type":"Timeout"}}`
 
 var log = capnslog.NewPackageLogger("github.com/coreos/clair", "api")
 
-func Run(config *config.APIConfig, ctx *context.RouteContext, st *stopper.Stopper) {
+// Config is the configuration for the API service.
+type Config struct {
+	Port                      int
+	HealthPort                int
+	Timeout                   time.Duration
+	PaginationKey             string
+	CertFile, KeyFile, CAFile string
+}
+
+func Run(cfg *Config, store database.Datastore, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the API service if there is no config.
-	if config == nil {
+	if cfg == nil {
 		log.Infof("main API service is disabled.")
 		return
 	}
-	log.Infof("starting main API on port %d.", config.Port)
+	log.Infof("starting main API on port %d.", cfg.Port)
 
-	tlsConfig, err := tlsClientConfig(config.CAFile)
+	tlsConfig, err := tlsClientConfig(cfg.CAFile)
 	if err != nil {
 		log.Fatalf("could not initialize client cert authentication: %s\n", err)
 	}
@@ -57,33 +65,33 @@ func Run(config *config.APIConfig, ctx *context.RouteContext, st *stopper.Stoppe
 		Timeout:          0,    // Already handled by our TimeOut middleware
 		NoSignalHandling: true, // We want to use our own Stopper
 		Server: &http.Server{
-			Addr:      ":" + strconv.Itoa(config.Port),
+			Addr:      ":" + strconv.Itoa(cfg.Port),
 			TLSConfig: tlsConfig,
-			Handler:   http.TimeoutHandler(newAPIHandler(ctx), config.Timeout, timeoutResponse),
+			Handler:   http.TimeoutHandler(newAPIHandler(cfg, store), cfg.Timeout, timeoutResponse),
 		},
 	}
 
-	listenAndServeWithStopper(srv, st, config.CertFile, config.KeyFile)
+	listenAndServeWithStopper(srv, st, cfg.CertFile, cfg.KeyFile)
 
 	log.Info("main API stopped")
 }
 
-func RunHealth(config *config.APIConfig, ctx *context.RouteContext, st *stopper.Stopper) {
+func RunHealth(cfg *Config, store database.Datastore, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the API service if there is no config.
-	if config == nil {
+	if cfg == nil {
 		log.Infof("health API service is disabled.")
 		return
 	}
-	log.Infof("starting health API on port %d.", config.HealthPort)
+	log.Infof("starting health API on port %d.", cfg.HealthPort)
 
 	srv := &graceful.Server{
 		Timeout:          10 * time.Second, // Interrupt health checks when stopping
 		NoSignalHandling: true,             // We want to use our own Stopper
 		Server: &http.Server{
-			Addr:    ":" + strconv.Itoa(config.HealthPort),
+			Addr:    ":" + strconv.Itoa(cfg.HealthPort),
-			Handler: http.TimeoutHandler(newHealthHandler(ctx), config.Timeout, timeoutResponse),
+			Handler: http.TimeoutHandler(newHealthHandler(store), cfg.Timeout, timeoutResponse),
 		},
 	}
 

api/context/context.go

@@ -1,66 +0,0 @@
-// Copyright 2017 clair authors
-//
-// 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 context
-
-import (
-	"net/http"
-	"strconv"
-	"time"
-
-	"github.com/coreos/pkg/capnslog"
-	"github.com/julienschmidt/httprouter"
-	"github.com/prometheus/client_golang/prometheus"
-
-	"github.com/coreos/clair/config"
-	"github.com/coreos/clair/database"
-)
-
-var (
-	log = capnslog.NewPackageLogger("github.com/coreos/clair", "api")
-
-	promResponseDurationMilliseconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
-		Name:    "clair_api_response_duration_milliseconds",
-		Help:    "The duration of time it takes to receieve and write a response to an API request",
-		Buckets: prometheus.ExponentialBuckets(9.375, 2, 10),
-	}, []string{"route", "code"})
-)
-
-func init() {
-	prometheus.MustRegister(promResponseDurationMilliseconds)
-}
-
-type Handler func(http.ResponseWriter, *http.Request, httprouter.Params, *RouteContext) (route string, status int)
-
-func HTTPHandler(handler Handler, ctx *RouteContext) httprouter.Handle {
-	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
-		start := time.Now()
-		route, status := handler(w, r, p, ctx)
-		statusStr := strconv.Itoa(status)
-		if status == 0 {
-			statusStr = "???"
-		}
-
-		promResponseDurationMilliseconds.
-			WithLabelValues(route, statusStr).
-			Observe(float64(time.Since(start).Nanoseconds()) / float64(time.Millisecond))
-
-		log.Infof("%s \"%s %s\" %s (%s)", r.RemoteAddr, r.Method, r.RequestURI, statusStr, time.Since(start))
-	}
-}
-
-type RouteContext struct {
-	Store  database.Datastore
-	Config *config.APIConfig
-}

api/router.go

@@ -1,4 +1,4 @@
-// Copyright 2015 clair authors
+// Copyright 2017 clair authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -20,8 +20,8 @@ import (
 
 	"github.com/julienschmidt/httprouter"
 
-	"github.com/coreos/clair/api/context"
 	"github.com/coreos/clair/api/v1"
+	"github.com/coreos/clair/database"
 )
 
 // router is an HTTP router that forwards requests to the appropriate sub-router
@@ -31,9 +31,9 @@ type router map[string]*httprouter.Router
 // Let's hope we never have more than 99 API versions.
 const apiVersionLength = len("v99")
 
-func newAPIHandler(ctx *context.RouteContext) http.Handler {
+func newAPIHandler(cfg *Config, store database.Datastore) http.Handler {
 	router := make(router)
-	router["/v1"] = v1.NewRouter(ctx)
+	router["/v1"] = v1.NewRouter(store, cfg.PaginationKey)
 	return router
 }
 
@@ -56,21 +56,22 @@ func (rtr router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	http.NotFound(w, r)
 }
 
-func newHealthHandler(ctx *context.RouteContext) http.Handler {
+func newHealthHandler(store database.Datastore) http.Handler {
 	router := httprouter.New()
-	router.GET("/health", context.HTTPHandler(getHealth, ctx))
+	router.GET("/health", healthHandler(store))
 	return router
 }
 
-func getHealth(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func healthHandler(store database.Datastore) httprouter.Handle {
-	header := w.Header()
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
-	header.Set("Server", "clair")
+		header := w.Header()
+		header.Set("Server", "clair")
 
-	status := http.StatusInternalServerError
+		status := http.StatusInternalServerError
-	if ctx.Store.Ping() {
+		if store.Ping() {
-		status = http.StatusOK
+			status = http.StatusOK
-	}
+		}
 
-	w.WriteHeader(status)
+		w.WriteHeader(status)
-	return "health", status
+	}
 }

api/v1/router.go

@@ -16,41 +16,83 @@
 package v1
 
 import (
+	"net/http"
+	"strconv"
+	"time"
+
 	"github.com/julienschmidt/httprouter"
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/coreos/clair/database"
+)
 
-	"github.com/coreos/clair/api/context"
+var (
+	promResponseDurationMilliseconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
+		Name:    "clair_api_response_duration_milliseconds",
+		Help:    "The duration of time it takes to receieve and write a response to an API request",
+		Buckets: prometheus.ExponentialBuckets(9.375, 2, 10),
+	}, []string{"route", "code"})
 )
 
+func init() {
+	prometheus.MustRegister(promResponseDurationMilliseconds)
+}
+
+type handler func(http.ResponseWriter, *http.Request, httprouter.Params, *context) (route string, status int)
+
+func httpHandler(h handler, ctx *context) httprouter.Handle {
+	return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+		start := time.Now()
+		route, status := h(w, r, p, ctx)
+		statusStr := strconv.Itoa(status)
+		if status == 0 {
+			statusStr = "???"
+		}
+
+		promResponseDurationMilliseconds.
+			WithLabelValues(route, statusStr).
+			Observe(float64(time.Since(start).Nanoseconds()) / float64(time.Millisecond))
+
+		log.Infof("%s \"%s %s\" %s (%s)", r.RemoteAddr, r.Method, r.RequestURI, statusStr, time.Since(start))
+	}
+}
+
+type context struct {
+	Store         database.Datastore
+	PaginationKey string
+}
+
 // NewRouter creates an HTTP router for version 1 of the Clair API.
-func NewRouter(ctx *context.RouteContext) *httprouter.Router {
+func NewRouter(store database.Datastore, paginationKey string) *httprouter.Router {
 	router := httprouter.New()
+	ctx := &context{store, paginationKey}
 
 	// Layers
-	router.POST("/layers", context.HTTPHandler(postLayer, ctx))
+	router.POST("/layers", httpHandler(postLayer, ctx))
-	router.GET("/layers/:layerName", context.HTTPHandler(getLayer, ctx))
+	router.GET("/layers/:layerName", httpHandler(getLayer, ctx))
-	router.DELETE("/layers/:layerName", context.HTTPHandler(deleteLayer, ctx))
+	router.DELETE("/layers/:layerName", httpHandler(deleteLayer, ctx))
 
 	// Namespaces
-	router.GET("/namespaces", context.HTTPHandler(getNamespaces, ctx))
+	router.GET("/namespaces", httpHandler(getNamespaces, ctx))
 
 	// Vulnerabilities
-	router.GET("/namespaces/:namespaceName/vulnerabilities", context.HTTPHandler(getVulnerabilities, ctx))
+	router.GET("/namespaces/:namespaceName/vulnerabilities", httpHandler(getVulnerabilities, ctx))
-	router.POST("/namespaces/:namespaceName/vulnerabilities", context.HTTPHandler(postVulnerability, ctx))
+	router.POST("/namespaces/:namespaceName/vulnerabilities", httpHandler(postVulnerability, ctx))
-	router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", context.HTTPHandler(getVulnerability, ctx))
+	router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(getVulnerability, ctx))
-	router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", context.HTTPHandler(putVulnerability, ctx))
+	router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(putVulnerability, ctx))
-	router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", context.HTTPHandler(deleteVulnerability, ctx))
+	router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(deleteVulnerability, ctx))
 
 	// Fixes
-	router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes", context.HTTPHandler(getFixes, ctx))
+	router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes", httpHandler(getFixes, ctx))
-	router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", context.HTTPHandler(putFix, ctx))
+	router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", httpHandler(putFix, ctx))
-	router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", context.HTTPHandler(deleteFix, ctx))
+	router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", httpHandler(deleteFix, ctx))
 
 	// Notifications
-	router.GET("/notifications/:notificationName", context.HTTPHandler(getNotification, ctx))
+	router.GET("/notifications/:notificationName", httpHandler(getNotification, ctx))
-	router.DELETE("/notifications/:notificationName", context.HTTPHandler(deleteNotification, ctx))
+	router.DELETE("/notifications/:notificationName", httpHandler(deleteNotification, ctx))
 
 	// Metrics
-	router.GET("/metrics", context.HTTPHandler(getMetrics, ctx))
+	router.GET("/metrics", httpHandler(getMetrics, ctx))
 
 	return router
 }

api/v1/routes.go

@@ -26,7 +26,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 
 	"github.com/coreos/clair"
-	"github.com/coreos/clair/api/context"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/pkg/commonerr"
 	"github.com/coreos/clair/pkg/tarutil"
@@ -96,7 +95,7 @@ func writeResponse(w http.ResponseWriter, r *http.Request, status int, resp inte
 	}
 }
 
-func postLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func postLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	request := LayerEnvelope{}
 	err := decodeJSON(r, &request)
 	if err != nil {
@@ -138,7 +137,7 @@ func postLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx
 	return postLayerRoute, http.StatusCreated
 }
 
-func getLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	_, withFeatures := r.URL.Query()["features"]
 	_, withVulnerabilities := r.URL.Query()["vulnerabilities"]
 
@@ -157,7 +156,7 @@ func getLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *
 	return getLayerRoute, http.StatusOK
 }
 
-func deleteLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func deleteLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	err := ctx.Store.DeleteLayer(p.ByName("layerName"))
 	if err == commonerr.ErrNotFound {
 		writeResponse(w, r, http.StatusNotFound, LayerEnvelope{Error: &Error{err.Error()}})
@@ -171,7 +170,7 @@ func deleteLayer(w http.ResponseWriter, r *http.Request, p httprouter.Params, ct
 	return deleteLayerRoute, http.StatusOK
 }
 
-func getNamespaces(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getNamespaces(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	dbNamespaces, err := ctx.Store.ListNamespaces()
 	if err != nil {
 		writeResponse(w, r, http.StatusInternalServerError, NamespaceEnvelope{Error: &Error{err.Error()}})
@@ -189,7 +188,7 @@ func getNamespaces(w http.ResponseWriter, r *http.Request, p httprouter.Params,
 	return getNamespacesRoute, http.StatusOK
 }
 
-func getVulnerabilities(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getVulnerabilities(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	query := r.URL.Query()
 
 	limitStrs, limitExists := query["limit"]
@@ -209,7 +208,7 @@ func getVulnerabilities(w http.ResponseWriter, r *http.Request, p httprouter.Par
 	page := 0
 	pageStrs, pageExists := query["page"]
 	if pageExists {
-		err = tokenUnmarshal(pageStrs[0], ctx.Config.PaginationKey, &page)
+		err = tokenUnmarshal(pageStrs[0], ctx.PaginationKey, &page)
 		if err != nil {
 			writeResponse(w, r, http.StatusBadRequest, VulnerabilityEnvelope{Error: &Error{"invalid page format: " + err.Error()}})
 			return getNotificationRoute, http.StatusBadRequest
@@ -239,7 +238,7 @@ func getVulnerabilities(w http.ResponseWriter, r *http.Request, p httprouter.Par
 
 	var nextPageStr string
 	if nextPage != -1 {
-		nextPageBytes, err := tokenMarshal(nextPage, ctx.Config.PaginationKey)
+		nextPageBytes, err := tokenMarshal(nextPage, ctx.PaginationKey)
 		if err != nil {
 			writeResponse(w, r, http.StatusBadRequest, VulnerabilityEnvelope{Error: &Error{"failed to marshal token: " + err.Error()}})
 			return getNotificationRoute, http.StatusBadRequest
@@ -251,7 +250,7 @@ func getVulnerabilities(w http.ResponseWriter, r *http.Request, p httprouter.Par
 	return getVulnerabilitiesRoute, http.StatusOK
 }
 
-func postVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func postVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	request := VulnerabilityEnvelope{}
 	err := decodeJSON(r, &request)
 	if err != nil {
@@ -286,7 +285,7 @@ func postVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Para
 	return postVulnerabilityRoute, http.StatusCreated
 }
 
-func getVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	_, withFixedIn := r.URL.Query()["fixedIn"]
 
 	dbVuln, err := ctx.Store.FindVulnerability(p.ByName("namespaceName"), p.ByName("vulnerabilityName"))
@@ -304,7 +303,7 @@ func getVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Param
 	return getVulnerabilityRoute, http.StatusOK
 }
 
-func putVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func putVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	request := VulnerabilityEnvelope{}
 	err := decodeJSON(r, &request)
 	if err != nil {
@@ -347,7 +346,7 @@ func putVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Param
 	return putVulnerabilityRoute, http.StatusOK
 }
 
-func deleteVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func deleteVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	err := ctx.Store.DeleteVulnerability(p.ByName("namespaceName"), p.ByName("vulnerabilityName"))
 	if err == commonerr.ErrNotFound {
 		writeResponse(w, r, http.StatusNotFound, VulnerabilityEnvelope{Error: &Error{err.Error()}})
@@ -361,7 +360,7 @@ func deleteVulnerability(w http.ResponseWriter, r *http.Request, p httprouter.Pa
 	return deleteVulnerabilityRoute, http.StatusOK
 }
 
-func getFixes(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getFixes(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	dbVuln, err := ctx.Store.FindVulnerability(p.ByName("namespaceName"), p.ByName("vulnerabilityName"))
 	if err == commonerr.ErrNotFound {
 		writeResponse(w, r, http.StatusNotFound, FeatureEnvelope{Error: &Error{err.Error()}})
@@ -376,7 +375,7 @@ func getFixes(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *
 	return getFixesRoute, http.StatusOK
 }
 
-func putFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func putFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	request := FeatureEnvelope{}
 	err := decodeJSON(r, &request)
 	if err != nil {
@@ -420,7 +419,7 @@ func putFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *co
 	return putFixRoute, http.StatusOK
 }
 
-func deleteFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func deleteFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	err := ctx.Store.DeleteVulnerabilityFix(p.ByName("vulnerabilityNamespace"), p.ByName("vulnerabilityName"), p.ByName("fixName"))
 	if err == commonerr.ErrNotFound {
 		writeResponse(w, r, http.StatusNotFound, FeatureEnvelope{Error: &Error{err.Error()}})
@@ -434,7 +433,7 @@ func deleteFix(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx
 	return deleteFixRoute, http.StatusOK
 }
 
-func getNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	query := r.URL.Query()
 
 	limitStrs, limitExists := query["limit"]
@@ -452,14 +451,14 @@ func getNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params
 	page := database.VulnerabilityNotificationFirstPage
 	pageStrs, pageExists := query["page"]
 	if pageExists {
-		err := tokenUnmarshal(pageStrs[0], ctx.Config.PaginationKey, &page)
+		err := tokenUnmarshal(pageStrs[0], ctx.PaginationKey, &page)
 		if err != nil {
 			writeResponse(w, r, http.StatusBadRequest, NotificationEnvelope{Error: &Error{"invalid page format: " + err.Error()}})
 			return getNotificationRoute, http.StatusBadRequest
 		}
 		pageToken = pageStrs[0]
 	} else {
-		pageTokenBytes, err := tokenMarshal(page, ctx.Config.PaginationKey)
+		pageTokenBytes, err := tokenMarshal(page, ctx.PaginationKey)
 		if err != nil {
 			writeResponse(w, r, http.StatusBadRequest, NotificationEnvelope{Error: &Error{"failed to marshal token: " + err.Error()}})
 			return getNotificationRoute, http.StatusBadRequest
@@ -476,13 +475,13 @@ func getNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params
 		return getNotificationRoute, http.StatusInternalServerError
 	}
 
-	notification := NotificationFromDatabaseModel(dbNotification, limit, pageToken, nextPage, ctx.Config.PaginationKey)
+	notification := NotificationFromDatabaseModel(dbNotification, limit, pageToken, nextPage, ctx.PaginationKey)
 
 	writeResponse(w, r, http.StatusOK, NotificationEnvelope{Notification: &notification})
 	return getNotificationRoute, http.StatusOK
 }
 
-func deleteNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func deleteNotification(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	err := ctx.Store.DeleteNotification(p.ByName("notificationName"))
 	if err == commonerr.ErrNotFound {
 		writeResponse(w, r, http.StatusNotFound, NotificationEnvelope{Error: &Error{err.Error()}})
@@ -496,7 +495,7 @@ func deleteNotification(w http.ResponseWriter, r *http.Request, p httprouter.Par
 	return deleteNotificationRoute, http.StatusOK
 }
 
-func getMetrics(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context.RouteContext) (string, int) {
+func getMetrics(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *context) (string, int) {
 	prometheus.Handler().ServeHTTP(w, r)
 	return getMetricsRoute, 0
 }

cmd/clair/config.go

@@ -1,4 +1,4 @@
-// Copyright 2015 clair authors
+// Copyright 2017 clair authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package config
+package main
 
 import (
 	"errors"
@@ -20,21 +20,19 @@ import (
 	"os"
 	"time"
 
-	"github.com/fernet/fernet-go"
 	"gopkg.in/yaml.v2"
+
+	"github.com/coreos/clair"
+	"github.com/coreos/clair/api"
+	"github.com/coreos/clair/database"
+	"github.com/coreos/clair/ext/notification"
+	"github.com/fernet/fernet-go"
 )
 
-// ErrDatasourceNotLoaded is returned when the datasource variable in the configuration file is not loaded properly
+// ErrDatasourceNotLoaded is returned when the datasource variable in the
+// configuration file is not loaded properly
 var ErrDatasourceNotLoaded = errors.New("could not load configuration: no database source specified")
 
-// RegistrableComponentConfig is a configuration block that can be used to
-// determine which registrable component should be initialized and pass
-// custom configuration to it.
-type RegistrableComponentConfig struct {
-	Type    string
-	Options map[string]interface{}
-}
-
 // File represents a YAML configuration file that namespaces all Clair
 // configuration under the top-level "clair" key.
 type File struct {
@@ -43,57 +41,37 @@ type File struct {
 
 // Config is the global configuration for an instance of Clair.
 type Config struct {
-	Database RegistrableComponentConfig
+	Database database.RegistrableComponentConfig
-	Updater  *UpdaterConfig
+	Updater  *clair.UpdaterConfig
-	Notifier *NotifierConfig
+	Notifier *notification.Config
-	API      *APIConfig
+	API      *api.Config
-}
-
-// UpdaterConfig is the configuration for the Updater service.
-type UpdaterConfig struct {
-	Interval time.Duration
-}
-
-// NotifierConfig is the configuration for the Notifier service and its registered notifiers.
-type NotifierConfig struct {
-	Attempts         int
-	RenotifyInterval time.Duration
-	Params           map[string]interface{} `yaml:",inline"`
-}
-
-// APIConfig is the configuration for the API service.
-type APIConfig struct {
-	Port                      int
-	HealthPort                int
-	Timeout                   time.Duration
-	PaginationKey             string
-	CertFile, KeyFile, CAFile string
 }
 
 // DefaultConfig is a configuration that can be used as a fallback value.
 func DefaultConfig() Config {
 	return Config{
-		Database: RegistrableComponentConfig{
+		Database: database.RegistrableComponentConfig{
 			Type: "pgsql",
 		},
-		Updater: &UpdaterConfig{
+		Updater: &clair.UpdaterConfig{
 			Interval: 1 * time.Hour,
 		},
-		API: &APIConfig{
+		API: &api.Config{
 			Port:       6060,
 			HealthPort: 6061,
 			Timeout:    900 * time.Second,
 		},
-		Notifier: &NotifierConfig{
+		Notifier: &notification.Config{
 			Attempts:         5,
 			RenotifyInterval: 2 * time.Hour,
 		},
 	}
 }
 
-// Load is a shortcut to open a file, read it, and generate a Config.
+// LoadConfig is a shortcut to open a file, read it, and generate a Config.
+//
 // It supports relative and absolute paths. Given "", it returns DefaultConfig.
-func Load(path string) (config *Config, err error) {
+func LoadConfig(path string) (config *Config, err error) {
 	var cfgFile File
 	cfgFile.Clair = DefaultConfig()
 	if path == "" {

cmd/clair/main.go

@@ -29,8 +29,6 @@ import (
 
 	"github.com/coreos/clair"
 	"github.com/coreos/clair/api"
-	"github.com/coreos/clair/api/context"
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/pkg/stopper"
 
@@ -88,7 +86,7 @@ func stopCPUProfiling(f *os.File) {
 }
 
 // Boot starts Clair instance with the provided config.
-func Boot(config *config.Config) {
+func Boot(config *Config) {
 	rand.Seed(time.Now().UnixNano())
 	st := stopper.NewStopper()
 
@@ -105,9 +103,9 @@ func Boot(config *config.Config) {
 
 	// Start API
 	st.Begin()
-	go api.Run(config.API, &context.RouteContext{db, config.API}, st)
+	go api.Run(config.API, db, st)
 	st.Begin()
-	go api.RunHealth(config.API, &context.RouteContext{db, config.API}, st)
+	go api.RunHealth(config.API, db, st)
 
 	// Start updater
 	st.Begin()
@@ -136,7 +134,7 @@ func main() {
 	}
 
 	// Load configuration
-	config, err := config.Load(*flagConfigPath)
+	config, err := LoadConfig(*flagConfigPath)
 	if err != nil {
 		log.Fatalf("failed to load configuration: %s", err)
 	}

database/database.go

@@ -20,8 +20,6 @@ import (
 	"errors"
 	"fmt"
 	"time"
-
-	"github.com/coreos/clair/config"
 )
 
 var (
@@ -35,11 +33,19 @@ var (
 	ErrInconsistent = errors.New("database: inconsistent database")
 )
 
+// RegistrableComponentConfig is a configuration block that can be used to
+// determine which registrable component should be initialized and pass custom
+// configuration to it.
+type RegistrableComponentConfig struct {
+	Type    string
+	Options map[string]interface{}
+}
+
 var drivers = make(map[string]Driver)
 
 // Driver is a function that opens a Datastore specified by its database driver type and specific
 // configuration.
-type Driver func(config.RegistrableComponentConfig) (Datastore, error)
+type Driver func(RegistrableComponentConfig) (Datastore, error)
 
 // Register makes a Constructor available by the provided name.
 //
@@ -56,7 +62,7 @@ func Register(name string, driver Driver) {
 }
 
 // Open opens a Datastore specified by a configuration.
-func Open(cfg config.RegistrableComponentConfig) (Datastore, error) {
+func Open(cfg RegistrableComponentConfig) (Datastore, error) {
 	driver, ok := drivers[cfg.Type]
 	if !ok {
 		return nil, fmt.Errorf("database: unknown Driver %q (forgotten configuration or import?)", cfg.Type)

database/pgsql/pgsql.go

@@ -31,7 +31,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/remind101/migrate"
 
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/database/pgsql/migrations"
 	"github.com/coreos/clair/pkg/commonerr"
@@ -114,11 +113,13 @@ type Config struct {
 	FixturePath             string
 }
 
-// openDatabase opens a PostgresSQL-backed Datastore using the given configuration.
+// openDatabase opens a PostgresSQL-backed Datastore using the given
-// It immediately every necessary migrations. If ManageDatabaseLifecycle is specified,
+// configuration.
-// the database will be created first. If FixturePath is specified, every SQL queries that are
+//
-// present insides will be executed.
+// It immediately runs all necessary migrations. If ManageDatabaseLifecycle is
-func openDatabase(registrableComponentConfig config.RegistrableComponentConfig) (database.Datastore, error) {
+// specified, the database will be created first. If FixturePath is specified,
+// every SQL queries that are present insides will be executed.
+func openDatabase(registrableComponentConfig database.RegistrableComponentConfig) (database.Datastore, error) {
 	var pg pgSQL
 	var err error
 

database/pgsql/pgsql_test.go

@@ -21,8 +21,9 @@ import (
 	"runtime"
 	"strings"
 
-	"github.com/coreos/clair/config"
 	"github.com/pborman/uuid"
+
+	"github.com/coreos/clair/database"
 )
 
 func openDatabaseForTest(testName string, loadFixture bool) (*pgSQL, error) {
@@ -34,7 +35,7 @@ func openDatabaseForTest(testName string, loadFixture bool) (*pgSQL, error) {
 	return datastore, nil
 }
 
-func generateTestConfig(testName string, loadFixture bool) config.RegistrableComponentConfig {
+func generateTestConfig(testName string, loadFixture bool) database.RegistrableComponentConfig {
 	dbName := "test_" + strings.ToLower(testName) + "_" + strings.Replace(uuid.New(), "-", "_", -1)
 
 	var fixturePath string
@@ -48,7 +49,7 @@ func generateTestConfig(testName string, loadFixture bool) config.RegistrableCom
 		source = fmt.Sprintf(sourceEnv, dbName)
 	}
 
-	return config.RegistrableComponentConfig{
+	return database.RegistrableComponentConfig{
 		Options: map[string]interface{}{
 			"source":                  source,
 			"cachesize":               0,

ext/notification/driver.go

@@ -22,10 +22,10 @@ package notification
 
 import (
 	"sync"
+	"time"
 
 	"github.com/coreos/pkg/capnslog"
 
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 )
 
@@ -36,11 +36,19 @@ var (
 	senders  = make(map[string]Sender)
 )
 
+// Config is the configuration for the Notifier service and its registered
+// notifiers.
+type Config struct {
+	Attempts         int
+	RenotifyInterval time.Duration
+	Params           map[string]interface{} `yaml:",inline"`
+}
+
 // Sender represents anything that can transmit notifications.
 type Sender interface {
 	// Configure attempts to initialize the notifier with the provided configuration.
 	// It returns whether the notifier is enabled or not.
-	Configure(*config.NotifierConfig) (bool, error)
+	Configure(*Config) (bool, error)
 
 	// Send informs the existence of the specified notification.
 	Send(notification database.VulnerabilityNotification) error

ext/notification/webhook/webhook.go

@@ -29,7 +29,6 @@ import (
 
 	"gopkg.in/yaml.v2"
 
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/ext/notification"
 )
@@ -55,7 +54,7 @@ func init() {
 	notification.RegisterSender("webhook", &sender{})
 }
 
-func (s *sender) Configure(config *config.NotifierConfig) (bool, error) {
+func (s *sender) Configure(config *notification.Config) (bool, error) {
 	// Get configuration
 	var httpConfig Config
 	if config == nil {

notifier.go

@@ -21,7 +21,6 @@ import (
 	"github.com/pborman/uuid"
 	"github.com/prometheus/client_golang/prometheus"
 
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/ext/notification"
 	"github.com/coreos/clair/pkg/commonerr"
@@ -54,7 +53,7 @@ func init() {
 
 // RunNotifier begins a process that checks for new notifications that should
 // be sent out to third parties.
-func RunNotifier(config *config.NotifierConfig, datastore database.Datastore, stopper *stopper.Stopper) {
+func RunNotifier(config *notification.Config, datastore database.Datastore, stopper *stopper.Stopper) {
 	defer stopper.End()
 
 	// Configure registered notifiers.

updater.go

@@ -24,7 +24,6 @@ import (
 	"github.com/pborman/uuid"
 	"github.com/prometheus/client_golang/prometheus"
 
-	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/ext/vulnmdsrc"
 	"github.com/coreos/clair/ext/vulnsrc"
@@ -63,9 +62,14 @@ func init() {
 	prometheus.MustRegister(promUpdaterNotesTotal)
 }
 
+// UpdaterConfig is the configuration for the Updater service.
+type UpdaterConfig struct {
+	Interval time.Duration
+}
+
 // RunUpdater begins a process that updates the vulnerability database at
 // regular intervals.
-func RunUpdater(config *config.UpdaterConfig, datastore database.Datastore, st *stopper.Stopper) {
+func RunUpdater(config *UpdaterConfig, datastore database.Datastore, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the updater if there is no config or if the interval is 0.

worker_test.go

@@ -78,9 +78,9 @@ func TestProcessWithDistUpgrade(t *testing.T) {
 	// wheezy.tar: FROM debian:wheezy
 	// jessie.tar: RUN sed -i "s/precise/trusty/" /etc/apt/sources.list && apt-get update &&
 	//             apt-get -y dist-upgrade
-	assert.Nil(t, Process(datastore, "Docker", "blank", "", testDataPath+"blank.tar.gz", nil))
+	assert.Nil(t, ProcessLayer(datastore, "Docker", "blank", "", testDataPath+"blank.tar.gz", nil))
-	assert.Nil(t, Process(datastore, "Docker", "wheezy", "blank", testDataPath+"wheezy.tar.gz", nil))
+	assert.Nil(t, ProcessLayer(datastore, "Docker", "wheezy", "blank", testDataPath+"wheezy.tar.gz", nil))
-	assert.Nil(t, Process(datastore, "Docker", "jessie", "wheezy", testDataPath+"jessie.tar.gz", nil))
+	assert.Nil(t, ProcessLayer(datastore, "Docker", "jessie", "wheezy", testDataPath+"jessie.tar.gz", nil))
 
 	// Ensure that the 'wheezy' layer has the expected namespace and features.
 	wheezy, ok := datastore.layers["wheezy"]