From 91dd3b19f69bfbeefb22c66f75ea3321f2f97bb8 Mon Sep 17 00:00:00 2001
From: Christine Dodrill <me@christine.website>
Date: Wed, 13 Dec 2017 10:43:58 -0800
Subject: convert to go buildpack

---
 vendor/github.com/Xe/gopreload/.gitignore          |   1 +
 vendor/github.com/Xe/gopreload/LICENSE             |  19 ++
 vendor/github.com/Xe/gopreload/README.md           |  51 +++
 .../github.com/Xe/gopreload/cmd/pluginizer/main.go |  56 ++++
 .../github.com/Xe/gopreload/database/mysql/main.go |   5 +
 .../Xe/gopreload/database/postgres/main.go         |   5 +
 .../Xe/gopreload/database/sqlite3/main.go          |   5 +
 vendor/github.com/Xe/gopreload/manhole/README.md   |  56 ++++
 vendor/github.com/Xe/gopreload/manhole/server.go   |  22 ++
 vendor/github.com/Xe/gopreload/sample/main.go      |  55 ++++
 .../Xe/gopreload/sample/runtimeStatLogs/main.go    |  36 ++
 vendor/github.com/Xe/jsonfeed/.travis.yml          |  17 +
 vendor/github.com/Xe/jsonfeed/LICENSE              | 363 +++++++++++++++++++++
 vendor/github.com/Xe/jsonfeed/README.md            |   8 +
 vendor/github.com/Xe/jsonfeed/jsonfeed.go          | 237 ++------------
 vendor/github.com/Xe/jsonfeed/jsonfeed_test.go     |  43 +++
 vendor/github.com/Xe/jsonfeed/testdata/feed.json   |  21 ++
 vendor/github.com/Xe/ln/LICENSE                    |  25 ++
 vendor/github.com/Xe/ln/README.md                  |  29 ++
 vendor/github.com/Xe/ln/action.go                  |  11 +
 vendor/github.com/Xe/ln/context.go                 |  38 +++
 vendor/github.com/Xe/ln/doc.go                     |  25 ++
 vendor/github.com/Xe/ln/ex/doc.go                  |   7 +
 vendor/github.com/Xe/ln/ex/gotrace.go              |  68 ++++
 vendor/github.com/Xe/ln/ex/http.go                 |  36 ++
 vendor/github.com/Xe/ln/ex/l2met.go                |  25 ++
 vendor/github.com/Xe/ln/example/http.go            |  51 +++
 vendor/github.com/Xe/ln/filter.go                  |  15 +-
 vendor/github.com/Xe/ln/formatter.go               |   5 +-
 vendor/github.com/Xe/ln/logger.go                  |  95 ++++--
 vendor/github.com/Xe/ln/logger_test.go             | 111 +++++++
 31 files changed, 1301 insertions(+), 240 deletions(-)
 create mode 100644 vendor/github.com/Xe/gopreload/.gitignore
 create mode 100644 vendor/github.com/Xe/gopreload/LICENSE
 create mode 100644 vendor/github.com/Xe/gopreload/README.md
 create mode 100644 vendor/github.com/Xe/gopreload/cmd/pluginizer/main.go
 create mode 100644 vendor/github.com/Xe/gopreload/database/mysql/main.go
 create mode 100644 vendor/github.com/Xe/gopreload/database/postgres/main.go
 create mode 100644 vendor/github.com/Xe/gopreload/database/sqlite3/main.go
 create mode 100644 vendor/github.com/Xe/gopreload/manhole/README.md
 create mode 100644 vendor/github.com/Xe/gopreload/manhole/server.go
 create mode 100644 vendor/github.com/Xe/gopreload/sample/main.go
 create mode 100644 vendor/github.com/Xe/gopreload/sample/runtimeStatLogs/main.go
 create mode 100644 vendor/github.com/Xe/jsonfeed/.travis.yml
 create mode 100644 vendor/github.com/Xe/jsonfeed/LICENSE
 create mode 100644 vendor/github.com/Xe/jsonfeed/README.md
 create mode 100644 vendor/github.com/Xe/jsonfeed/jsonfeed_test.go
 create mode 100644 vendor/github.com/Xe/jsonfeed/testdata/feed.json
 create mode 100644 vendor/github.com/Xe/ln/LICENSE
 create mode 100644 vendor/github.com/Xe/ln/README.md
 create mode 100644 vendor/github.com/Xe/ln/action.go
 create mode 100644 vendor/github.com/Xe/ln/context.go
 create mode 100644 vendor/github.com/Xe/ln/doc.go
 create mode 100644 vendor/github.com/Xe/ln/ex/doc.go
 create mode 100644 vendor/github.com/Xe/ln/ex/gotrace.go
 create mode 100644 vendor/github.com/Xe/ln/ex/http.go
 create mode 100644 vendor/github.com/Xe/ln/ex/l2met.go
 create mode 100644 vendor/github.com/Xe/ln/example/http.go
 create mode 100644 vendor/github.com/Xe/ln/logger_test.go

(limited to 'vendor/github.com/Xe')

diff --git a/vendor/github.com/Xe/gopreload/.gitignore b/vendor/github.com/Xe/gopreload/.gitignore
new file mode 100644
index 0000000..140f8cf
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/.gitignore
@@ -0,0 +1 @@
+*.so
diff --git a/vendor/github.com/Xe/gopreload/LICENSE b/vendor/github.com/Xe/gopreload/LICENSE
new file mode 100644
index 0000000..82248fe
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2017 Christine Dodrill <me@christine.website>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
\ No newline at end of file
diff --git a/vendor/github.com/Xe/gopreload/README.md b/vendor/github.com/Xe/gopreload/README.md
new file mode 100644
index 0000000..32a3e5d
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/README.md
@@ -0,0 +1,51 @@
+gopreload
+=========
+
+An emulation of the linux libc `LD_PRELOAD` except for use with Go plugins for
+the addition of instrumentation and debugging utilities.
+
+## Pluginizer
+
+`pluginizer` is a bit of glue that makes it easier to turn underscore imports
+into plugins:
+
+```console
+$ go get github.com/Xe/gopreload/cmd/pluginizer
+$ pluginizer -help
+Usage of pluginizer:
+  -dest string
+        destination package to generate
+  -pkg string
+        package to underscore import
+$ pluginizer -pkg github.com/lib/pq -dest github.com/Xe/gopreload/database/postgres
+To build this plugin:
+  $ go build -buildmode plugin -o /path/to/output.so github.com/Xe/gopreload/database/postgres
+```
+
+### Database drivers
+
+I have included plugin boilerplate autogenned versions of the sqlite, postgres
+and mysql database drivers.
+
+## Manhole
+
+[`manhole`][manhole] is an example of debugging and introspection tooling that has
+been useful when debugging past issues with long-running server processes.
+
+## Security Implications
+
+This package assumes that programs run using it are never started with environment
+variables that are set by unauthenticated users. Any errors in loading the plugins
+will be logged using the standard library logger `log` and ignored.
+
+This has about the same security implications as [`LD_PRELOAD`][ld-preload] does in most
+Linux distributions, but the risk is minimal compared to the massive benefit for
+being able to have arbitrary background services all be able to be dug into using
+the same tooling or being able to have metric submission be completely separated
+from the backend metric creation. Common logging setup processes can be _always_
+loaded, making the default logger settings into the correct settings.
+
+---
+
+[manhole]: https://github.com/Xe/gopreload/tree/master/manhole
+[ld-preload]: https://rafalcieslak.wordpress.com/2013/04/02/dynamic-linker-tricks-using-ld_preload-to-cheat-inject-features-and-investigate-programs/
diff --git a/vendor/github.com/Xe/gopreload/cmd/pluginizer/main.go b/vendor/github.com/Xe/gopreload/cmd/pluginizer/main.go
new file mode 100644
index 0000000..67195a8
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/cmd/pluginizer/main.go
@@ -0,0 +1,56 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+
+	_ "github.com/Xe/gopreload"
+)
+
+var (
+	pkgName     = flag.String("pkg", "", "package to underscore import")
+	destPkgName = flag.String("dest", "", "destination package to generate")
+)
+
+const codeTemplate = `//+build go1.8
+
+package main
+
+import _ "$PACKAGE_PATH"`
+
+func main() {
+	flag.Parse()
+
+	if *pkgName == "" || *destPkgName == "" {
+		log.Fatal("must set -pkg and -dest")
+	}
+
+	srcDir := filepath.Join(os.Getenv("GOPATH"), "src", *destPkgName)
+
+	err := os.MkdirAll(srcDir, os.ModePerm)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fout, err := os.Create(srcDir + "/main.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer fout.Close()
+
+	codeBody := os.Expand(codeTemplate, func(s string) string {
+		if s == "PACKAGE_PATH" {
+			return *pkgName
+		}
+
+		return "no idea man"
+	})
+
+	fmt.Fprintln(fout, codeBody)
+
+	fmt.Println("To build this plugin: ")
+	fmt.Println("  $ go build -buildmode plugin -o /path/to/output.so " + *destPkgName)
+}
diff --git a/vendor/github.com/Xe/gopreload/database/mysql/main.go b/vendor/github.com/Xe/gopreload/database/mysql/main.go
new file mode 100644
index 0000000..49042a9
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/database/mysql/main.go
@@ -0,0 +1,5 @@
+//+build go1.8
+
+package main
+
+import _ "github.com/go-sql-driver/mysql"
diff --git a/vendor/github.com/Xe/gopreload/database/postgres/main.go b/vendor/github.com/Xe/gopreload/database/postgres/main.go
new file mode 100644
index 0000000..41efb5b
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/database/postgres/main.go
@@ -0,0 +1,5 @@
+//+build go1.8
+
+package main
+
+import _ "github.com/lib/pq"
diff --git a/vendor/github.com/Xe/gopreload/database/sqlite3/main.go b/vendor/github.com/Xe/gopreload/database/sqlite3/main.go
new file mode 100644
index 0000000..7478b61
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/database/sqlite3/main.go
@@ -0,0 +1,5 @@
+//+build go1.8
+
+package main
+
+import _ "github.com/mattn/go-sqlite3"
diff --git a/vendor/github.com/Xe/gopreload/manhole/README.md b/vendor/github.com/Xe/gopreload/manhole/README.md
new file mode 100644
index 0000000..4540449
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/manhole/README.md
@@ -0,0 +1,56 @@
+# manhole
+
+An opinionated HTTP manhole into Go processes.
+
+## Assumptions This Package Makes
+
+- Make each server instance have a unique HTTP port that is randomized by default.
+  This makes it very hard to accidentally route this manhole to the outside world.
+  If more assurance is required I personally suggest using [yubikey totp][yktotp],
+  but do research.
+- Application code does not touch [`http.DefaultServeMux`][default-servemux]'. This is so that
+  administative control rods can be dynamically flipped in the case they are
+  needed.
+- [pprof][pprof] endpoints added to `http.DefaultServeMux`. This allows easy
+  access to [pprof runtime tracing][pprof-tracing] to debug issues on long-running
+  applications like HTTP services.
+- Make the manhole slightly inconvenient to put into place in production. This
+  helps make sure that this tool remains a debugging tool and not a part of a
+  long-term production rollout.
+
+## Usage
+
+Compile this as a plugin:
+
+```console
+$ go get -d github.com/Xe/gopreload/manhole
+$ go build -buildmode plugin -o manhole.so github.com/Xe/gopreload/manhole
+```
+
+Then add [`gopreload`][gopreload] to your application:
+
+```go
+// gopreload.go
+package main
+
+/*
+    This file is separate to make it very easy to both add into an application, but
+    also very easy to remove.
+*/
+
+import _ "github.com/Xe/gopreload"
+```
+
+And at runtime add the `manhole.so` file you created earlier to the target system
+somehow and add the following environment variable to its run configuration:
+
+```sh
+GO_PRELOAD=/path/to/manhole.so
+```
+
+---
+
+[pprof]: https://godoc.org/net/http/pprof
+[default-servemux]: https://godoc.org/net/http#pkg-variables
+[yktotp]: https://github.com/GeertJohan/yubigo
+[gopreload]: https://github.com/Xe/gopreload
diff --git a/vendor/github.com/Xe/gopreload/manhole/server.go b/vendor/github.com/Xe/gopreload/manhole/server.go
new file mode 100644
index 0000000..1d542bc
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/manhole/server.go
@@ -0,0 +1,22 @@
+package main
+
+import (
+	"log"
+	"net"
+	"net/http"
+	_ "net/http/pprof"
+	"net/rpc"
+)
+
+func init() {
+	l, err := net.Listen("tcp", "127.0.0.2:0")
+	if err != nil {
+		log.Printf("manhole: cannot bind to 127.0.0.2:0: %v", err)
+		return
+	}
+
+	log.Printf("manhole: Now listening on http://%s", l.Addr())
+
+	rpc.HandleHTTP()
+	go http.Serve(l, nil)
+}
diff --git a/vendor/github.com/Xe/gopreload/sample/main.go b/vendor/github.com/Xe/gopreload/sample/main.go
new file mode 100644
index 0000000..b36bef2
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/sample/main.go
@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"net/http"
+	"runtime"
+	"time"
+
+	_ "github.com/Xe/gopreload"
+	"github.com/Xe/ln"
+)
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		spew()
+
+		ln.Log(ln.F{"action": "gc_spew", "who": r.RemoteAddr})
+
+		fmt.Fprintln(w, "done")
+	})
+
+	http.ListenAndServe(":9184", nil)
+}
+
+func makeBuffer() []byte {
+	return make([]byte, rand.Intn(5000000)+5000000)
+}
+
+func spew() {
+	pool := make([][]byte, 20)
+
+	var m runtime.MemStats
+	makes := 0
+	for _ = range make([]struct{}, 50) {
+		b := makeBuffer()
+		makes += 1
+		i := rand.Intn(len(pool))
+		pool[i] = b
+
+		time.Sleep(time.Millisecond * 250)
+
+		bytes := 0
+
+		for i := 0; i < len(pool); i++ {
+			if pool[i] != nil {
+				bytes += len(pool[i])
+			}
+		}
+
+		runtime.ReadMemStats(&m)
+		fmt.Printf("%d,%d,%d,%d,%d,%d\n", m.HeapSys, bytes, m.HeapAlloc,
+			m.HeapIdle, m.HeapReleased, makes)
+	}
+}
diff --git a/vendor/github.com/Xe/gopreload/sample/runtimeStatLogs/main.go b/vendor/github.com/Xe/gopreload/sample/runtimeStatLogs/main.go
new file mode 100644
index 0000000..ac530e0
--- /dev/null
+++ b/vendor/github.com/Xe/gopreload/sample/runtimeStatLogs/main.go
@@ -0,0 +1,36 @@
+package main
+
+import (
+	"runtime"
+	"time"
+
+	"github.com/Xe/ln"
+)
+
+func init() {
+	ln.Log(ln.F{
+		"action": "started_up",
+		"every":  "20_seconds",
+		"what":   "gc_metrics",
+	})
+
+	go func() {
+		for {
+			time.Sleep(20 * time.Second)
+			gatherMetrics()
+		}
+	}()
+}
+
+func gatherMetrics() {
+	stats := &runtime.MemStats{}
+	runtime.ReadMemStats(stats)
+
+	ln.Log(ln.F{
+		"gc-collections":     stats.NumGC,
+		"gc-stw-pause-total": stats.PauseTotalNs,
+		"live-object-count":  stats.Mallocs - stats.Frees,
+		"heap-bytes":         stats.Alloc,
+		"stack-bytes":        stats.StackInuse,
+	})
+}
diff --git a/vendor/github.com/Xe/jsonfeed/.travis.yml b/vendor/github.com/Xe/jsonfeed/.travis.yml
new file mode 100644
index 0000000..e872c60
--- /dev/null
+++ b/vendor/github.com/Xe/jsonfeed/.travis.yml
@@ -0,0 +1,17 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/
+
+language: go
+
+go:
+  - 1.8.1
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - go test -race -coverprofile=coverage.txt -covermode=atomic
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/Xe/jsonfeed/LICENSE b/vendor/github.com/Xe/jsonfeed/LICENSE
new file mode 100644
index 0000000..e87a115
--- /dev/null
+++ b/vendor/github.com/Xe/jsonfeed/LICENSE
@@ -0,0 +1,363 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. "Contributor"
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+
+     means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the terms of
+        a Secondary License.
+
+1.6. "Executable Form"
+
+     means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+
+     means a work that combines Covered Software with other material, in a
+     separate file or files, that is not Covered Software.
+
+1.8. "License"
+
+     means this document.
+
+1.9. "Licensable"
+
+     means having the right to grant, to the maximum extent possible, whether
+     at the time of the initial grant or subsequently, any and all of the
+     rights conveyed by this License.
+
+1.10. "Modifications"
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. "Patent Claims" of a Contributor
+
+      means any patent claim(s), including without limitation, method,
+      process, and apparatus claims, in any patent Licensable by such
+      Contributor that would be infringed, but for the grant of the License,
+      by the making, using, selling, offering for sale, having made, import,
+      or transfer of either its Contributions or its Contributor Version.
+
+1.12. "Secondary License"
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. "Source Code Form"
+
+      means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, "You" includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, "control" means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or
+        as part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its
+        Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution
+     become effective for each Contribution on the date the Contributor first
+     distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under
+     this License. No additional rights or licenses will be implied from the
+     distribution or licensing of Covered Software under this License.
+     Notwithstanding Section 2.1(b) above, no patent license is granted by a
+     Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party's
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of
+        its Contributions.
+
+     This License does not grant any rights in the trademarks, service marks,
+     or logos of any Contributor (except as may be necessary to comply with
+     the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this
+     License (see Section 10.2) or under the terms of a Secondary License (if
+     permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its
+     Contributions are its original creation(s) or it has sufficient rights to
+     grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under
+     applicable copyright doctrines of fair use, fair dealing, or other
+     equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under
+     the terms of this License. You must inform recipients that the Source
+     Code Form of the Covered Software is governed by the terms of this
+     License, and how they can obtain a copy of this License. You may not
+     attempt to alter or restrict the recipients' rights in the Source Code
+     Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this
+        License, or sublicense it under different terms, provided that the
+        license for the Executable Form does not attempt to limit or alter the
+        recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for
+     the Covered Software. If the Larger Work is a combination of Covered
+     Software with a work governed by one or more Secondary Licenses, and the
+     Covered Software is not Incompatible With Secondary Licenses, this
+     License permits You to additionally distribute such Covered Software
+     under the terms of such Secondary License(s), so that the recipient of
+     the Larger Work may, at their option, further distribute the Covered
+     Software under the terms of either this License or such Secondary
+     License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices
+     (including copyright notices, patent notices, disclaimers of warranty, or
+     limitations of liability) contained within the Source Code Form of the
+     Covered Software, except that You may alter any license notices to the
+     extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on
+     behalf of any Contributor. You must make it absolutely clear that any
+     such warranty, support, indemnity, or liability obligation is offered by
+     You alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute,
+   judicial order, or regulation then You must: (a) comply with the terms of
+   this License to the maximum extent possible; and (b) describe the
+   limitations and the code they affect. Such description must be placed in a
+   text file included with all distributions of the Covered Software under
+   this License. Except to the extent prohibited by statute or regulation,
+   such description must be sufficiently detailed for a recipient of ordinary
+   skill to be able to understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing
+     basis, if such Contributor fails to notify You of the non-compliance by
+     some reasonable means prior to 60 days after You have come back into
+     compliance. Moreover, Your grants from a particular Contributor are
+     reinstated on an ongoing basis if such Contributor notifies You of the
+     non-compliance by some reasonable means, this is the first time You have
+     received notice of non-compliance with this License from such
+     Contributor, and You become compliant prior to 30 days after Your receipt
+     of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions,
+     counter-claims, and cross-claims) alleging that a Contributor Version
+     directly or indirectly infringes any patent, then the rights granted to
+     You by any and all Contributors for the Covered Software under Section
+     2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an "as is" basis,
+   without warranty of any kind, either expressed, implied, or statutory,
+   including, without limitation, warranties that the Covered Software is free
+   of defects, merchantable, fit for a particular purpose or non-infringing.
+   The entire risk as to the quality and performance of the Covered Software
+   is with You. Should any Covered Software prove defective in any respect,
+   You (not any Contributor) assume the cost of any necessary servicing,
+   repair, or correction. This disclaimer of warranty constitutes an essential
+   part of this License. No use of  any Covered Software is authorized under
+   this License except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from
+   such party's negligence to the extent applicable law prohibits such
+   limitation. Some jurisdictions do not allow the exclusion or limitation of
+   incidental or consequential damages, so this exclusion and limitation may
+   not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts
+   of a jurisdiction where the defendant maintains its principal place of
+   business and such litigation shall be governed by laws of that
+   jurisdiction, without reference to its conflict-of-law provisions. Nothing
+   in this Section shall prevent a party's ability to bring cross-claims or
+   counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject
+   matter hereof. If any provision of this License is held to be
+   unenforceable, such provision shall be reformed only to the extent
+   necessary to make it enforceable. Any law or regulation which provides that
+   the language of a contract shall be construed against the drafter shall not
+   be used to construe this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version
+      of the License under which You originally received the Covered Software,
+      or under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a
+      modified version of this License if you rename the license and remove
+      any references to the name of the license steward (except to note that
+      such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+      Licenses If You choose to distribute Source Code Form that is
+      Incompatible With Secondary Licenses under the terms of this version of
+      the License, the notice described in Exhibit B of this License must be
+      attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file,
+then You may include the notice in a location (such as a LICENSE file in a
+relevant directory) where a recipient would be likely to look for such a
+notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+      This Source Code Form is "Incompatible
+      With Secondary Licenses", as defined by
+      the Mozilla Public License, v. 2.0.
+
diff --git a/vendor/github.com/Xe/jsonfeed/README.md b/vendor/github.com/Xe/jsonfeed/README.md
new file mode 100644
index 0000000..27f7cb5
--- /dev/null
+++ b/vendor/github.com/Xe/jsonfeed/README.md
@@ -0,0 +1,8 @@
+# JSONFeed - Go Package to parse JSON Feed streams
+
+[![Build Status](https://travis-ci.org/st3fan/jsonfeed.svg?branch=master)](https://travis-ci.org/st3fan/jsonfeed) [![Go Report Card](https://goreportcard.com/badge/github.com/st3fan/jsonfeed)](https://goreportcard.com/report/github.com/st3fan/jsonfeed) [![codecov](https://codecov.io/gh/st3fan/jsonfeed/branch/master/graph/badge.svg)](https://codecov.io/gh/st3fan/jsonfeed)
+
+
+*Stefan Arentz, May 2017*
+
+Work in progress. Minimal package to parse JSON Feed streams. Please file feature requests.
diff --git a/vendor/github.com/Xe/jsonfeed/jsonfeed.go b/vendor/github.com/Xe/jsonfeed/jsonfeed.go
index d3af9d1..913880d 100644
--- a/vendor/github.com/Xe/jsonfeed/jsonfeed.go
+++ b/vendor/github.com/Xe/jsonfeed/jsonfeed.go
@@ -2,10 +2,6 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/
 
-/*
-Package jsonfeed is a set of types and convenience functions for reading and
-parsing JSON Feed version 1 as defined here: https://jsonfeed.org/version/1
-*/
 package jsonfeed
 
 import (
@@ -14,224 +10,59 @@ import (
 	"time"
 )
 
-// CurrentVersion will point to the current specification of JSON feed
-// that this package implements.
 const CurrentVersion = "https://jsonfeed.org/version/1"
 
-// Item is a single article or link in a JSON Feed.
 type Item struct {
-	// ID is unique for that item for that feed over time. If an item
-	// is ever updated, the id should be unchanged. New items should
-	// never use a previously-used id. If an id is presented as a number
-	// or other type, a JSON Feed reader must coerce it to a string.
-	// Ideally, the id is the full URL of the resource described by the
-	// item, since URLs make great unique identifiers.
-	ID string `json:"id"`
-
-	// URL is the URL of the resource described by the item. It’s the
-	// permalink. This may be the same as the id — but should be present
-	// regardless.
-	URL string `json:"url,omitempty"`
-
-	// ExternalURL is the URL of a page elsewhere. This is especially
-	// useful for linkblogs. If url links to where you’re talking about
-	// a thing, then this links to the thing you’re talking about.
-	ExternalURL string `json:"external_url,omitempty"`
-
-	// Title (optional, string) is plain text. Microblog items in
-	// particular may omit titles.
-	Title string `json:"title,omitempty"`
-
-	// ContentHTML and ContentText are each optional strings — but one
-	// or both must be present. This is the HTML or plain text of the
-	// item. Important: the only place HTML is allowed in this format
-	// is in content_html. A Twitter-like service might use content_text,
-	// while a blog might use content_html. Use whichever makes sense
-	// for your resource. (It doesn’t even have to be the same for each
-	// item in a feed.)
-	ContentHTML string `json:"content_html,omitempty"`
-	ContentText string `json:"content_text,omitempty"`
-
-	// Summary is a plain text sentence or two describing the item.
-	// This might be presented in a timeline, for instance, where a
-	// detail view would display all of ContentHTML or ContentText.
-	Summary string `json:"summary,omitempty"`
-
-	// Image is the URL of the main image for the item. This image
-	// may also appear in the content_html — if so, it’s a hint to
-	// the feed reader that this is the main, featured image. Feed
-	// readers may use the image as a preview (probably resized as
-	// a thumbnail and placed in a timeline).
-	Image string `json:"image,omitempty"`
-
-	// BannerImage is the URL of an image to use as a banner. Some
-	// blogging systems (such as Medium) display a different banner
-	// image chosen to go with each post, but that image wouldn’t
-	// otherwise appear in the content_html. A feed reader with a
-	// detail view may choose to show this banner image at the top
-	// of the detail view, possibly with the title overlaid.
-	BannerImage string `json:"banner_image,omitempty"`
-
-	// DatePublished specifies the date of this Item's publication.
-	DatePublished time.Time `json:"date_published,omitempty"`
-
-	// DateModified specifies the date of this Item's last modification
-	// (if applicable)
-	DateModified time.Time `json:"date_modified,omitempty"`
-
-	// Author has the same structure as the top-level author. If not
-	// specified in an item, then the top-level author, if present,
-	// is the author of the item.
-	Author *Author `json:"author,omitempty"`
-
-	// Tags can have any plain text values you want. Tags tend to be
-	// just one word, but they may be anything. Note: they are not
-	// the equivalent of Twitter hashtags. Some blogging systems and
-	// other feed formats call these categories.
-	Tags []string `json:"tags,omitempty"`
-
-	// Attachments (optional, array) lists related resources. Podcasts,
-	// for instance, would include an attachment that’s an audio or
-	// video file.
-	Attachments []Attachment `json:"attachments,omitempty"`
+	ID            string    `json:"id"`
+	URL           string    `json:"url"`
+	ExternalURL   string    `json:"external_url"`
+	Title         string    `json:"title"`
+	ContentHTML   string    `json:"content_html"`
+	ContentText   string    `json:"content_text"`
+	Summary       string    `json:"summary"`
+	Image         string    `json:"image"`
+	BannerImage   string    `json:"banner_image"`
+	DatePublished time.Time `json:"date_published"`
+	DateModified  time.Time `json:"date_modified"`
+	Author        Author    `json:"author"`
+	Tags          []string  `json:"tags"`
 }
 
-// Author specifies the feed author. The author object has several members.
-// These are all optional, but if you provide an author object, then at
-// least one is required.
 type Author struct {
-	// Name is the author's name.
-	Name string `json:"name,omitempty"`
-
-	// URL is the URL of a site owned by the author. It could be a
-	// blog, micro-blog, Twitter account, and so on. Ideally the linked-to
-	// page provides a way to contact the author, but that’s not
-	// required. The URL could be a mailto: link, though we suspect
-	// that will be rare.
-	URL string `json:"url,omitempty"`
-
-	// Avatar is the URL for an image for the author. As with icon,
-	// it should be square and relatively large — such as 512 x 512 —
-	// and should use transparency where appropriate, since it may
-	// be rendered on a non-white background.
-	Avatar string `json:"avatar,omitempty"`
+	Name   string `json:"name"`
+	URL    string `json:"url"`
+	Avatar string `json:"avatar"`
 }
 
-// Hub describes endpoints that can be used to subscribe to real-time
-// notifications from the publisher of this feed. Each object has a type
-// and url, both of which are required.
 type Hub struct {
 	Type string `json:"type"`
 	URL  string `json:"url"`
 }
 
-// Attachment is a related resource to an Item. If the Feed describes a
-// podcast, this would refer to the episodes of said podcast.
 type Attachment struct {
-	// URL specifies the location of the attachment.
-	URL string `json:"url"`
-
-	// MIMEType specifies the type of the attachment, such as "audio/mpeg".
-	MIMEType string `json:"mime_type"`
-
-	// Title is a name for the attachment. Important: if there are multiple
-	// attachments, and two or more have the exact same title (when title
-	// is present), then they are considered as alternate representations
-	// of the same thing. In this way a podcaster, for instance, might
-	// provide an audio recording in different formats.
-	Title string `json:"title,omitifempty"`
-
-	// SizeInBytes specifies the attachment filesize in bytes.
-	SizeInBytes int64 `json:"size_in_bytes,omitempty"`
-
-	// DurationInSeconds specifies how long the attachment takes to listen
-	// to or watch.
-	DurationInSeconds int64 `json:"duration_in_seconds,omitempty"`
+	URL               string `json:"url"`
+	MIMEType          string `json:"mime_type"`
+	Title             string `json:"title"`
+	SizeInBytes       int64  `json:"size_in_bytes"`
+	DurationInSeconds int64  `json:"duration_in_seconds"`
 }
 
-// Feed is a list that may change over time, and the individual items in the
-// list may change.
-//
-// Think of a blog or microblog, Twitter or Facebook timeline, set of commits
-// to a repository, or even a server log. These are all lists, and each could
-// be described by a Feed.
-//
-// A JSON Feed starts with some info at the top: it says where the Feed comes
-// from, and may say who created it and so on.
 type Feed struct {
-	// Version is the URL of the version of the format the Feed uses.
-	Version string `json:"version"`
-
-	// Title is the name of the Feed, which will often correspond to the
-	// name of the website (blog, for instance), though not necessarily.
-	Title string `json:"title"`
-
-	// HomePageURL is the URL of the resource that the Feed describes.
-	// This resource may or may not actually be a “home” page, but it
-	// should be an HTML page. If a Feed is published on the public web,
-	// this should be considered as required. But it may not make sense
-	// in the case of a file created on a desktop computer, when that
-	// file is not shared or is shared only privately.
-	//
-	// This field is strongly reccomended, but not required.
-	HomePageURL string `json:"home_page_url,omitempty"`
-
-	// FeedURL is the URL of the Feed, and serves as the unique identifier
-	// for the Feed. As with home_page_url, this should be considered
-	// required for Feeds on the public web.
-	//
-	// This field is strongly reccomended, but not required.
-	FeedURL string `json:"feed_url,omitempty"`
-
-	// Description provides more detail, beyond the title, on what the Feed
-	// is about. A Feed reader may display this text.
-	Description string `json:"description,omitempty"`
-
-	// UserComment is a description of the purpose of the Feed. This is for
-	// the use of people looking at the raw JSON, and should be ignored by
-	// Feed readers.
-	UserComment string `json:"user_comment,omitempty"`
-
-	// NextURL is the URL of a Feed that provides the next n items, where
-	// n is determined by the publisher. This allows for pagination, but
-	// with the expectation that reader software is not required to use it
-	// and probably won’t use it very often. next_url must not be the same
-	// as Feed_url, and it must not be the same as a previous next_url
-	// (to avoid infinite loops).
-	NextURL string `json:"next_url,omitempty"`
-
-	// Icon is the URL of an image for the Feed suitable to be used in a
-	// timeline, much the way an avatar might be used. It should be square
-	// and relatively large — such as 512 x 512 — so that it can be scaled-down
-	// and so that it can look good on retina displays. It should use transparency
-	// where appropriate, since it may be rendered on a non-white background.
-	Icon string `json:"icon,omitempty"`
-
-	// Favicon is the URL of an image for the Feed suitable to be used in a
-	// source list. It should be square and relatively small, but not smaller
-	// than 64 x 64 (so that it can look good on retina displays). As with icon,
-	// this image should use transparency where appropriate, since it may be
-	// rendered on a non-white background.
-	Favicon string `json:"favicon,omitempty"`
-
-	// Author specifies the Feed author.
-	Author Author `json:"author,omitempty"`
-
-	// Expired specifies if the Feed will never update again. A Feed for a
-	// temporary event, such as an instance of the Olympics, could expire.
-	// If the value is true, then it’s expired. Any other value, or the
-	// absence of expired, means the Feed may continue to update.
-	Expired bool `json:"expired,omitempty"`
-
-	// Hubs describes endpoints that can be used to subscribe to real-time
-	// notifications from the publisher of this Feed.
-	Hubs []Hub `json:"hubs,omitempty"`
-
-	// Items is the list of Items in this Feed.
-	Items []Item `json:"items"`
+	Version     string `json:"version"`
+	Title       string `json:"title"`
+	HomePageURL string `json:"home_page_url"`
+	FeedURL     string `json:"feed_url"`
+	Description string `json:"description"`
+	UserComment string `json:"user_comment"`
+	NextURL     string `json:"next_url"`
+	Icon        string `json:"icon"`
+	Favicon     string `json:"favicon"`
+	Author      Author `json:"author"`
+	Expired     bool   `json:"expired"`
+	Hubs        []Hub  `json:"hubs"`
+	Items       []Item `json:"items"`
 }
 
-// Parse reads a JSON feed object out of a reader.
 func Parse(r io.Reader) (Feed, error) {
 	var feed Feed
 	decoder := json.NewDecoder(r)
diff --git a/vendor/github.com/Xe/jsonfeed/jsonfeed_test.go b/vendor/github.com/Xe/jsonfeed/jsonfeed_test.go
new file mode 100644
index 0000000..29d9165
--- /dev/null
+++ b/vendor/github.com/Xe/jsonfeed/jsonfeed_test.go
@@ -0,0 +1,43 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/
+
+package jsonfeed_test
+
+import (
+	"os"
+	"testing"
+	"time"
+
+	"github.com/st3fan/jsonfeed"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_ParseSimple(t *testing.T) {
+	r, err := os.Open("testdata/feed.json")
+	assert.NoError(t, err, "Could not open testdata/feed.json")
+
+	feed, err := jsonfeed.Parse(r)
+	assert.NoError(t, err, "Could not parse testdata/feed.json")
+
+	assert.Equal(t, "https://jsonfeed.org/version/1", feed.Version)
+	assert.Equal(t, "JSON Feed", feed.Title)
+	assert.Equal(t, "JSON Feed is a ...", feed.Description)
+	assert.Equal(t, "https://jsonfeed.org/", feed.HomePageURL)
+	assert.Equal(t, "https://jsonfeed.org/feed.json", feed.FeedURL)
+	assert.Equal(t, "This feed allows ...", feed.UserComment)
+	assert.Equal(t, "https://jsonfeed.org/graphics/icon.png", feed.Favicon)
+	assert.Equal(t, "Brent Simmons and Manton Reece", feed.Author.Name)
+
+	assert.Equal(t, 1, len(feed.Items))
+
+	assert.Equal(t, "https://jsonfeed.org/2017/05/17/announcing_json_feed", feed.Items[0].ID)
+	assert.Equal(t, "https://jsonfeed.org/2017/05/17/announcing_json_feed", feed.Items[0].URL)
+	assert.Equal(t, "Announcing JSON Feed", feed.Items[0].Title)
+	assert.Equal(t, "<p>We ...", feed.Items[0].ContentHTML)
+
+	datePublished, err := time.Parse("2006-01-02T15:04:05-07:00", "2017-05-17T08:02:12-07:00")
+	assert.NoError(t, err, "Could not parse timestamp")
+
+	assert.Equal(t, datePublished, feed.Items[0].DatePublished)
+}
diff --git a/vendor/github.com/Xe/jsonfeed/testdata/feed.json b/vendor/github.com/Xe/jsonfeed/testdata/feed.json
new file mode 100644
index 0000000..ad4bbe1
--- /dev/null
+++ b/vendor/github.com/Xe/jsonfeed/testdata/feed.json
@@ -0,0 +1,21 @@
+{
+  "version": "https://jsonfeed.org/version/1",
+  "title": "JSON Feed",
+  "description": "JSON Feed is a ...",
+  "home_page_url": "https://jsonfeed.org/",
+  "feed_url": "https://jsonfeed.org/feed.json",
+  "user_comment": "This feed allows ...",
+  "favicon": "https://jsonfeed.org/graphics/icon.png",
+  "author": {
+    "name": "Brent Simmons and Manton Reece"
+  },
+  "items": [
+    {
+      "id": "https://jsonfeed.org/2017/05/17/announcing_json_feed",
+      "url": "https://jsonfeed.org/2017/05/17/announcing_json_feed",
+      "title": "Announcing JSON Feed",
+      "content_html": "<p>We ...",
+      "date_published": "2017-05-17T08:02:12-07:00"
+    }
+  ]
+}
diff --git a/vendor/github.com/Xe/ln/LICENSE b/vendor/github.com/Xe/ln/LICENSE
new file mode 100644
index 0000000..7202b64
--- /dev/null
+++ b/vendor/github.com/Xe/ln/LICENSE
@@ -0,0 +1,25 @@
+Copyright (c) 2015, Andrew Gwozdziewycz
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\ No newline at end of file
diff --git a/vendor/github.com/Xe/ln/README.md b/vendor/github.com/Xe/ln/README.md
new file mode 100644
index 0000000..61fc941
--- /dev/null
+++ b/vendor/github.com/Xe/ln/README.md
@@ -0,0 +1,29 @@
+# ln: The Natural Logger for Go
+
+`ln` provides a simple interface to logging, and metrics, and
+obviates the need to utilize purpose built metrics packages, like
+`go-metrics` for simple use cases.
+
+The design of `ln` centers around the idea of key-value pairs, which
+can be interpreted on the fly, but "Filters" to do things such as
+aggregated metrics, and report said metrics to, say Librato, or
+statsd.
+
+"Filters" are like WSGI, or Rack Middleware. They are run "top down"
+and can abort an emitted log's output at any time, or continue to let
+it through the chain. However, the interface is slightly different
+than that. Rather than encapsulating the chain with partial function
+application, we utilize a simpler method, namely, each plugin defines
+an `Apply` function, which takes as an argument the log event, and
+performs the work of the plugin, only if the Plugin "Applies" to this
+log event.
+
+If `Apply` returns `false`, the iteration through the rest of the
+filters is aborted, and the log is dropped from further processing.
+
+## Current Status: Initial Development / Concept
+
+## Copyright
+
+(c) 2015, Andrew Gwozdziewycz, BSD Licensed. See LICENSE for more
+info.
diff --git a/vendor/github.com/Xe/ln/action.go b/vendor/github.com/Xe/ln/action.go
new file mode 100644
index 0000000..54f8954
--- /dev/null
+++ b/vendor/github.com/Xe/ln/action.go
@@ -0,0 +1,11 @@
+package ln
+
+// Action is a convenience helper for logging the "action" being performed as
+// part of a log line.
+//
+// It is a convenience wrapper for the following:
+//
+//     ln.Log(ctx, fer, f, ln.Action("writing frozberry sales reports to database"))
+func Action(act string) Fer {
+	return F{"action": act}
+}
diff --git a/vendor/github.com/Xe/ln/context.go b/vendor/github.com/Xe/ln/context.go
new file mode 100644
index 0000000..0ea3229
--- /dev/null
+++ b/vendor/github.com/Xe/ln/context.go
@@ -0,0 +1,38 @@
+package ln
+
+import (
+	"context"
+)
+
+type ctxKey int
+
+const (
+	fKey = iota
+)
+
+// WithF stores or appends a given F instance into a context.
+func WithF(ctx context.Context, f F) context.Context {
+	pf, ok := FFromContext(ctx)
+	if !ok {
+		return context.WithValue(ctx, fKey, f)
+	}
+
+	pf.Extend(f)
+
+	return context.WithValue(ctx, fKey, pf)
+}
+
+// FFromContext fetches the `F` out of the context if it exists.
+func FFromContext(ctx context.Context) (F, bool) {
+	fvp := ctx.Value(fKey)
+	if fvp == nil {
+		return nil, false
+	}
+
+	f, ok := fvp.(F)
+	if !ok {
+		return nil, false
+	}
+
+	return f, true
+}
diff --git a/vendor/github.com/Xe/ln/doc.go b/vendor/github.com/Xe/ln/doc.go
new file mode 100644
index 0000000..ab81c3c
--- /dev/null
+++ b/vendor/github.com/Xe/ln/doc.go
@@ -0,0 +1,25 @@
+/*
+Package ln is the Natural Logger for Go
+
+`ln` provides a simple interface to logging, and metrics, and
+obviates the need to utilize purpose built metrics packages, like
+`go-metrics` for simple use cases.
+
+The design of `ln` centers around the idea of key-value pairs, which
+can be interpreted on the fly, but "Filters" to do things such as
+aggregated metrics, and report said metrics to, say Librato, or
+statsd.
+
+"Filters" are like WSGI, or Rack Middleware. They are run "top down"
+and can abort an emitted log's output at any time, or continue to let
+it through the chain. However, the interface is slightly different
+than that. Rather than encapsulating the chain with partial function
+application, we utilize a simpler method, namely, each plugin defines
+an `Apply` function, which takes as an argument the log event, and
+performs the work of the plugin, only if the Plugin "Applies" to this
+log event.
+
+If `Apply` returns `false`, the iteration through the rest of the
+filters is aborted, and the log is dropped from further processing.
+*/
+package ln
diff --git a/vendor/github.com/Xe/ln/ex/doc.go b/vendor/github.com/Xe/ln/ex/doc.go
new file mode 100644
index 0000000..932ed42
--- /dev/null
+++ b/vendor/github.com/Xe/ln/ex/doc.go
@@ -0,0 +1,7 @@
+/*
+Package ex is a set of extensions and middleware for ln.
+
+This package will (inevitably) have a lot of third-party dependencies and
+as such might be broken apart into other packages in the future.
+*/
+package ex
diff --git a/vendor/github.com/Xe/ln/ex/gotrace.go b/vendor/github.com/Xe/ln/ex/gotrace.go
new file mode 100644
index 0000000..5579879
--- /dev/null
+++ b/vendor/github.com/Xe/ln/ex/gotrace.go
@@ -0,0 +1,68 @@
+package ex
+
+import (
+	"context"
+	"log"
+
+	"github.com/Xe/ln"
+	"golang.org/x/net/trace"
+)
+
+type goEventLogger struct {
+	ev trace.EventLog
+}
+
+// NewGoEventLogger will log ln information to a given trace.EventLog instance.
+func NewGoEventLogger(ev trace.EventLog) ln.Filter {
+	return &goEventLogger{ev: ev}
+}
+
+func (gel *goEventLogger) Apply(ctx context.Context, e ln.Event) bool {
+	data, err := ln.DefaultFormatter.Format(ctx, e)
+	if err != nil {
+		log.Printf("wtf: error in log formatting: %v", err)
+		return false
+	}
+
+	if everr := e.Data["err"]; everr != nil {
+		gel.ev.Errorf("%s", string(data))
+		return true
+	}
+
+	gel.ev.Printf("%s", string(data))
+	return true
+}
+
+func (gel *goEventLogger) Close() { gel.ev.Finish() }
+func (gel *goEventLogger) Run()   {}
+
+type sst string
+
+func (s sst) String() string { return string(s) }
+
+func goTraceLogger(ctx context.Context, e ln.Event) bool {
+	sp, ok := trace.FromContext(ctx)
+	if !ok {
+		return true // no trace in context
+	}
+
+	data, err := ln.DefaultFormatter.Format(ctx, e)
+	if err != nil {
+		log.Printf("wtf: error in log formatting: %v", err)
+		return false
+	}
+
+	if everr := e.Data["err"]; everr != nil {
+		sp.SetError()
+	}
+
+	sp.LazyLog(sst(string(data)), false)
+
+	return true
+}
+
+// NewGoTraceLogger will log ln information to a golang.org/x/net/trace.Trace
+// if it is present in the context of ln calls.
+func NewGoTraceLogger() ln.Filter {
+	return ln.FilterFunc(goTraceLogger)
+}
diff --git a/vendor/github.com/Xe/ln/ex/http.go b/vendor/github.com/Xe/ln/ex/http.go
new file mode 100644
index 0000000..c5715a3
--- /dev/null
+++ b/vendor/github.com/Xe/ln/ex/http.go
@@ -0,0 +1,36 @@
+package ex
+
+import (
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/Xe/ln"
+)
+
+func HTTPLog(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		host, _, _ := net.SplitHostPort(r.RemoteAddr)
+		f := ln.F{
+			"remote_ip":       host,
+			"x_forwarded_for": r.Header.Get("X-Forwarded-For"),
+			"path":            r.URL.Path,
+		}
+		ctx := ln.WithF(r.Context(), f)
+		st := time.Now()
+
+		next.ServeHTTP(w, r.WithContext(ctx))
+
+		af := time.Now()
+		f["request_duration"] = af.Sub(st)
+
+		ws, ok := w.(interface {
+			Status() int
+		})
+		if ok {
+			f["status"] = ws.Status()
+		}
+
+		ln.Log(r.Context(), f)
+	})
+}
diff --git a/vendor/github.com/Xe/ln/ex/l2met.go b/vendor/github.com/Xe/ln/ex/l2met.go
new file mode 100644
index 0000000..e2a7f19
--- /dev/null
+++ b/vendor/github.com/Xe/ln/ex/l2met.go
@@ -0,0 +1,25 @@
+package ex
+
+import (
+	"time"
+
+	"github.com/Xe/ln"
+)
+
+// This file deals with formatting of [l2met] style metrics.
+// [l2met]: https://r.32k.io/l2met-introduction
+
+// Counter formats a value as a metrics counter.
+func Counter(name string, value int) ln.Fer {
+	return ln.F{"count#" + name: value}
+}
+
+// Gauge formats a value as a metrics gauge.
+func Gauge(name string, value int) ln.Fer {
+	return ln.F{"gauge#" + name: value}
+}
+
+// Measure formats a value as a metrics measure.
+func Measure(name string, ts time.Time) ln.Fer {
+	return ln.F{"measure#" + name: time.Since(ts)}
+}
diff --git a/vendor/github.com/Xe/ln/example/http.go b/vendor/github.com/Xe/ln/example/http.go
new file mode 100644
index 0000000..7fb98a3
--- /dev/null
+++ b/vendor/github.com/Xe/ln/example/http.go
@@ -0,0 +1,51 @@
+// +build ignore
+
+package main
+
+import (
+	"context"
+	"flag"
+	"net/http"
+	"time"
+
+	"github.com/Xe/ln"
+	"github.com/Xe/ln/ex"
+	"github.com/facebookgo/flagenv"
+	"golang.org/x/net/trace"
+)
+
+var (
+	port          = flag.String("port", "2145", "http port to listen on")
+	tracingFamily = flag.String("trace-family", "ln example", "tracing family to use for x/net/trace")
+)
+
+func main() {
+	flagenv.Parse()
+	flag.Parse()
+
+	ln.DefaultLogger.Filters = append(ln.DefaultLogger.Filters, ex.NewGoTraceLogger())
+
+	http.HandleFunc("/", handleIndex)
+	http.ListenAndServe(":"+*port, middlewareSpan(ex.HTTPLog(http.DefaultServeMux)))
+}
+
+func middlewareSpan(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		sp := trace.New(*tracingFamily, "HTTP request")
+		defer sp.Finish()
+		ctx, cancel := context.WithTimeout(r.Context(), 30*time.Second)
+		defer cancel()
+
+		ctx = trace.NewContext(ctx, sp)
+
+		next.ServeHTTP(w, r.WithContext(ctx))
+	})
+}
+
+func handleIndex(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+
+	ln.Log(ctx, ln.Action("index"), ln.F{"there_is": "no_danger"})
+
+	http.Error(w, "There is no danger citizen", http.StatusOK)
+}
diff --git a/vendor/github.com/Xe/ln/filter.go b/vendor/github.com/Xe/ln/filter.go
index 586efef..4f2d006 100644
--- a/vendor/github.com/Xe/ln/filter.go
+++ b/vendor/github.com/Xe/ln/filter.go
@@ -1,23 +1,24 @@
 package ln
 
 import (
+	"context"
 	"io"
 	"sync"
 )
 
 // Filter interface for defining chain filters
 type Filter interface {
-	Apply(Event) bool
+	Apply(ctx context.Context, e Event) bool
 	Run()
 	Close()
 }
 
 // FilterFunc allows simple functions to implement the Filter interface
-type FilterFunc func(e Event) bool
+type FilterFunc func(ctx context.Context, e Event) bool
 
 // Apply implements the Filter interface
-func (ff FilterFunc) Apply(e Event) bool {
-	return ff(e)
+func (ff FilterFunc) Apply(ctx context.Context, e Event) bool {
+	return ff(ctx, e)
 }
 
 // Run implements the Filter interface
@@ -45,8 +46,8 @@ func NewWriterFilter(out io.Writer, format Formatter) *WriterFilter {
 }
 
 // Apply implements the Filter interface
-func (w *WriterFilter) Apply(e Event) bool {
-	output, err := w.Formatter.Format(e)
+func (w *WriterFilter) Apply(ctx context.Context, e Event) bool {
+	output, err := w.Formatter.Format(ctx, e)
 	if err == nil {
 		w.Lock()
 		w.Out.Write(output)
@@ -63,4 +64,4 @@ func (w *WriterFilter) Run() {}
 func (w *WriterFilter) Close() {}
 
 // NilFilter is safe to return as a Filter, but does nothing
-var NilFilter = FilterFunc(func(e Event) bool { return true })
+var NilFilter = FilterFunc(func(_ context.Context, e Event) bool { return true })
diff --git a/vendor/github.com/Xe/ln/formatter.go b/vendor/github.com/Xe/ln/formatter.go
index ecd4743..70313fc 100644
--- a/vendor/github.com/Xe/ln/formatter.go
+++ b/vendor/github.com/Xe/ln/formatter.go
@@ -2,6 +2,7 @@ package ln
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"time"
 )
@@ -13,7 +14,7 @@ var (
 
 // Formatter defines the formatting of events
 type Formatter interface {
-	Format(Event) ([]byte, error)
+	Format(ctx context.Context, e Event) ([]byte, error)
 }
 
 // DefaultFormatter is the default way in which to format events
@@ -36,7 +37,7 @@ func NewTextFormatter() Formatter {
 }
 
 // Format implements the Formatter interface
-func (t *TextFormatter) Format(e Event) ([]byte, error) {
+func (t *TextFormatter) Format(_ context.Context, e Event) ([]byte, error) {
 	var writer bytes.Buffer
 
 	writer.WriteString("time=\"")
diff --git a/vendor/github.com/Xe/ln/logger.go b/vendor/github.com/Xe/ln/logger.go
index cdfe89e..79a9a63 100644
--- a/vendor/github.com/Xe/ln/logger.go
+++ b/vendor/github.com/Xe/ln/logger.go
@@ -1,7 +1,7 @@
 package ln
 
 import (
-	"fmt"
+	"context"
 	"os"
 	"time"
 
@@ -30,14 +30,28 @@ func init() {
 	DefaultLogger = &Logger{
 		Filters: defaultFilters,
 	}
-
 }
 
 // F is a key-value mapping for structured data.
 type F map[string]interface{}
 
+// Extend concatentates one F with one or many Fer instances.
+func (f F) Extend(other ...Fer) {
+	for _, ff := range other {
+		for k, v := range ff.F() {
+			f[k] = v
+		}
+	}
+}
+
+// F makes F an Fer
+func (f F) F() F {
+	return f
+}
+
+// Fer allows any type to add fields to the structured logging key->value pairs.
 type Fer interface {
-	F() map[string]interface{}
+	F() F
 }
 
 // Event represents an event
@@ -48,8 +62,7 @@ type Event struct {
 }
 
 // Log is the generic logging method.
-func (l *Logger) Log(xs ...interface{}) {
-	var bits []interface{}
+func (l *Logger) Log(ctx context.Context, xs ...Fer) {
 	event := Event{Time: time.Now()}
 
 	addF := func(bf F) {
@@ -62,18 +75,14 @@ func (l *Logger) Log(xs ...interface{}) {
 		}
 	}
 
-	// Assemble the event
-	for _, b := range xs {
-		if bf, ok := b.(F); ok {
-			addF(bf)
-		} else if fer, ok := b.(Fer); ok {
-			addF(F(fer.F()))
-		} else {
-			bits = append(bits, b)
-		}
+	for _, f := range xs {
+		addF(f.F())
 	}
 
-	event.Message = fmt.Sprint(bits...)
+	ctxf, ok := FFromContext(ctx)
+	if ok {
+		addF(ctxf)
+	}
 
 	if os.Getenv("LN_DEBUG_ALL_EVENTS") == "1" {
 		frame := callersFrame()
@@ -85,19 +94,19 @@ func (l *Logger) Log(xs ...interface{}) {
 		event.Data["_filename"] = frame.filename
 	}
 
-	l.filter(event)
+	l.filter(ctx, event)
 }
 
-func (l *Logger) filter(e Event) {
+func (l *Logger) filter(ctx context.Context, e Event) {
 	for _, f := range l.Filters {
-		if !f.Apply(e) {
+		if !f.Apply(ctx, e) {
 			return
 		}
 	}
 }
 
 // Error logs an error and information about the context of said error.
-func (l *Logger) Error(err error, xs ...interface{}) {
+func (l *Logger) Error(ctx context.Context, err error, xs ...Fer) {
 	data := F{}
 	frame := callersFrame()
 
@@ -113,12 +122,37 @@ func (l *Logger) Error(err error, xs ...interface{}) {
 
 	xs = append(xs, data)
 
-	l.Log(xs...)
+	l.Log(ctx, xs...)
 }
 
 // Fatal logs this set of values, then exits with status code 1.
-func (l *Logger) Fatal(xs ...interface{}) {
-	l.Log(xs...)
+func (l *Logger) Fatal(ctx context.Context, xs ...Fer) {
+	xs = append(xs, F{"fatal": true})
+
+	l.Log(ctx, xs...)
+
+	os.Exit(1)
+}
+
+// FatalErr combines Fatal and Error.
+func (l *Logger) FatalErr(ctx context.Context, err error, xs ...Fer) {
+	xs = append(xs, F{"fatal": true})
+
+	data := F{}
+	frame := callersFrame()
+
+	data["_lineno"] = frame.lineno
+	data["_function"] = frame.function
+	data["_filename"] = frame.filename
+	data["err"] = err
+
+	cause := errors.Cause(err)
+	if cause != nil {
+		data["cause"] = cause.Error()
+	}
+
+	xs = append(xs, data)
+	l.Log(ctx, xs...)
 
 	os.Exit(1)
 }
@@ -126,16 +160,21 @@ func (l *Logger) Fatal(xs ...interface{}) {
 // Default Implementation
 
 // Log is the generic logging method.
-func Log(xs ...interface{}) {
-	DefaultLogger.Log(xs...)
+func Log(ctx context.Context, xs ...Fer) {
+	DefaultLogger.Log(ctx, xs...)
 }
 
 // Error logs an error and information about the context of said error.
-func Error(err error, xs ...interface{}) {
-	DefaultLogger.Error(err, xs...)
+func Error(ctx context.Context, err error, xs ...Fer) {
+	DefaultLogger.Error(ctx, err, xs...)
 }
 
 // Fatal logs this set of values, then exits with status code 1.
-func Fatal(xs ...interface{}) {
-	DefaultLogger.Fatal(xs...)
+func Fatal(ctx context.Context, xs ...Fer) {
+	DefaultLogger.Fatal(ctx, xs...)
+}
+
+// FatalErr combines Fatal and Error.
+func FatalErr(ctx context.Context, err error, xs ...Fer) {
+	DefaultLogger.FatalErr(ctx, err, xs...)
 }
diff --git a/vendor/github.com/Xe/ln/logger_test.go b/vendor/github.com/Xe/ln/logger_test.go
new file mode 100644
index 0000000..800ed90
--- /dev/null
+++ b/vendor/github.com/Xe/ln/logger_test.go
@@ -0,0 +1,111 @@
+package ln
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"testing"
+	"time"
+)
+
+var ctx context.Context
+
+func setup(t *testing.T) (*bytes.Buffer, func()) {
+	ctx = context.Background()
+
+	out := bytes.Buffer{}
+	oldFilters := DefaultLogger.Filters
+	DefaultLogger.Filters = []Filter{NewWriterFilter(&out, nil)}
+	return &out, func() {
+		DefaultLogger.Fi