cord-776 create build / runtime containers for autmation uservices
Change-Id: I246973192adef56a250ffe93a5f65fff488840c1
diff --git a/switchq/vendor/github.com/juju/errors/LICENSE b/switchq/vendor/github.com/juju/errors/LICENSE
new file mode 100644
index 0000000..ade9307
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/LICENSE
@@ -0,0 +1,191 @@
+All files in this repository are licensed as follows. If you contribute
+to this repository, it is assumed that you license your contribution
+under the same license unless you state otherwise.
+
+All files Copyright (C) 2015 Canonical Ltd. unless otherwise specified in the file.
+
+This software is licensed under the LGPLv3, included below.
+
+As a special exception to the GNU Lesser General Public License version 3
+("LGPL3"), the copyright holders of this Library give you permission to
+convey to a third party a Combined Work that links statically or dynamically
+to this Library without providing any Minimal Corresponding Source or
+Minimal Application Code as set out in 4d or providing the installation
+information set out in section 4e, provided that you comply with the other
+provisions of LGPL3 and provided that you meet, for the Application the
+terms and conditions of the license(s) which apply to the Application.
+
+Except as stated in this special exception, the provisions of LGPL3 will
+continue to comply in full to this Library. If you modify this Library, you
+may apply this exception to your version of this Library, but you are not
+obliged to do so. If you do not wish to do so, delete this exception
+statement from your version. This exception does not (and cannot) modify any
+license terms which apply to the Application, with which you must still
+comply.
+
+
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+ This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+ 0. Additional Definitions.
+
+ As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+ "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+ An "Application" is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
+Defining a subclass of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+ A "Combined Work" is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+ The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+ The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but excluding the System Libraries of the Combined Work.
+
+ 1. Exception to Section 3 of the GNU GPL.
+
+ You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+ 2. Conveying Modified Versions.
+
+ If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+ a) under this License, provided that you make a good faith effort to
+ ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
+ whatever part of its purpose remains meaningful, or
+
+ b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+ 3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
+a header file that is part of the Library. You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
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+(ten or fewer lines in length), you do both of the following:
+
+ a) Give prominent notice with each copy of the object code that the
+ Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the object code with a copy of the GNU GPL and this license
+ document.
+
+ 4. Combined Works.
+
+ You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+ a) Give prominent notice with each copy of the Combined Work that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the Combined Work with a copy of the GNU GPL and this license
+ document.
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+ c) For a Combined Work that displays copyright notices during
+ execution, include the copyright notice for the Library among
+ these notices, as well as a reference directing the user to the
+ copies of the GNU GPL and this license document.
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+ d) Do one of the following:
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+ 0) Convey the Minimal Corresponding Source under the terms of this
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+ suitable for, and under terms that permit, the user to
+ recombine or relink the Application with a modified version of
+ the Linked Version to produce a modified Combined Work, in the
+ manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.
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+ 1) Use a suitable shared library mechanism for linking with the
+ Library. A suitable mechanism is one that (a) uses at run time
+ a copy of the Library already present on the user's computer
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+ of the Library that is interface-compatible with the Linked
+ Version.
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+ e) Provide Installation Information, but only if you would otherwise
+ be required to provide such information under section 6 of the
+ GNU GPL, and only to the extent that such information is
+ necessary to install and execute a modified version of the
+ Combined Work produced by recombining or relinking the
+ Application with a modified version of the Linked Version. (If
+ you use option 4d0, the Installation Information must accompany
+ the Minimal Corresponding Source and Corresponding Application
+ Code. If you use option 4d1, you must provide the Installation
+ Information in the manner specified by section 6 of the GNU GPL
+ for conveying Corresponding Source.)
+
+ 5. Combined Libraries.
+
+ You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+ a) Accompany the combined library with a copy of the same work based
+ on the Library, uncombined with any other library facilities,
+ conveyed under the terms of this License.
+
+ b) Give prominent notice with the combined library that part of it
+ is a work based on the Library, and explaining where to find the
+ accompanying uncombined form of the same work.
+
+ 6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
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+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
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+ If the Library as you received it specifies that a proxy can decide
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+Library.
diff --git a/switchq/vendor/github.com/juju/errors/Makefile b/switchq/vendor/github.com/juju/errors/Makefile
new file mode 100644
index 0000000..ab7c2e6
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/Makefile
@@ -0,0 +1,11 @@
+default: check
+
+check:
+ go test && go test -compiler gccgo
+
+docs:
+ godoc2md github.com/juju/errors > README.md
+ sed -i 's|\[godoc-link-here\]|[](https://godoc.org/github.com/juju/errors)|' README.md
+
+
+.PHONY: default check docs
diff --git a/switchq/vendor/github.com/juju/errors/README.md b/switchq/vendor/github.com/juju/errors/README.md
new file mode 100644
index 0000000..ee24891
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/README.md
@@ -0,0 +1,536 @@
+
+# errors
+ import "github.com/juju/errors"
+
+[](https://godoc.org/github.com/juju/errors)
+
+The juju/errors provides an easy way to annotate errors without losing the
+orginal error context.
+
+The exported `New` and `Errorf` functions are designed to replace the
+`errors.New` and `fmt.Errorf` functions respectively. The same underlying
+error is there, but the package also records the location at which the error
+was created.
+
+A primary use case for this library is to add extra context any time an
+error is returned from a function.
+
+
+ if err := SomeFunc(); err != nil {
+ return err
+ }
+
+This instead becomes:
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Trace(err)
+ }
+
+which just records the file and line number of the Trace call, or
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Annotate(err, "more context")
+ }
+
+which also adds an annotation to the error.
+
+When you want to check to see if an error is of a particular type, a helper
+function is normally exported by the package that returned the error, like the
+`os` package does. The underlying cause of the error is available using the
+`Cause` function.
+
+
+ os.IsNotExist(errors.Cause(err))
+
+The result of the `Error()` call on an annotated error is the annotations joined
+with colons, then the result of the `Error()` method for the underlying error
+that was the cause.
+
+
+ err := errors.Errorf("original")
+ err = errors.Annotatef(err, "context")
+ err = errors.Annotatef(err, "more context")
+ err.Error() -> "more context: context: original"
+
+Obviously recording the file, line and functions is not very useful if you
+cannot get them back out again.
+
+
+ errors.ErrorStack(err)
+
+will return something like:
+
+
+ first error
+ github.com/juju/errors/annotation_test.go:193:
+ github.com/juju/errors/annotation_test.go:194: annotation
+ github.com/juju/errors/annotation_test.go:195:
+ github.com/juju/errors/annotation_test.go:196: more context
+ github.com/juju/errors/annotation_test.go:197:
+
+The first error was generated by an external system, so there was no location
+associated. The second, fourth, and last lines were generated with Trace calls,
+and the other two through Annotate.
+
+Sometimes when responding to an error you want to return a more specific error
+for the situation.
+
+
+ if err := FindField(field); err != nil {
+ return errors.Wrap(err, errors.NotFoundf(field))
+ }
+
+This returns an error where the complete error stack is still available, and
+`errors.Cause()` will return the `NotFound` error.
+
+
+
+
+
+
+## func AlreadyExistsf
+``` go
+func AlreadyExistsf(format string, args ...interface{}) error
+```
+AlreadyExistsf returns an error which satisfies IsAlreadyExists().
+
+
+## func Annotate
+``` go
+func Annotate(other error, message string) error
+```
+Annotate is used to add extra context to an existing error. The location of
+the Annotate call is recorded with the annotations. The file, line and
+function are also recorded.
+
+For example:
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Annotate(err, "failed to frombulate")
+ }
+
+
+## func Annotatef
+``` go
+func Annotatef(other error, format string, args ...interface{}) error
+```
+Annotatef is used to add extra context to an existing error. The location of
+the Annotate call is recorded with the annotations. The file, line and
+function are also recorded.
+
+For example:
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Annotatef(err, "failed to frombulate the %s", arg)
+ }
+
+
+## func Cause
+``` go
+func Cause(err error) error
+```
+Cause returns the cause of the given error. This will be either the
+original error, or the result of a Wrap or Mask call.
+
+Cause is the usual way to diagnose errors that may have been wrapped by
+the other errors functions.
+
+
+## func DeferredAnnotatef
+``` go
+func DeferredAnnotatef(err *error, format string, args ...interface{})
+```
+DeferredAnnotatef annotates the given error (when it is not nil) with the given
+format string and arguments (like fmt.Sprintf). If *err is nil, DeferredAnnotatef
+does nothing. This method is used in a defer statement in order to annotate any
+resulting error with the same message.
+
+For example:
+
+
+ defer DeferredAnnotatef(&err, "failed to frombulate the %s", arg)
+
+
+## func Details
+``` go
+func Details(err error) string
+```
+Details returns information about the stack of errors wrapped by err, in
+the format:
+
+
+ [{filename:99: error one} {otherfile:55: cause of error one}]
+
+This is a terse alternative to ErrorStack as it returns a single line.
+
+
+## func ErrorStack
+``` go
+func ErrorStack(err error) string
+```
+ErrorStack returns a string representation of the annotated error. If the
+error passed as the parameter is not an annotated error, the result is
+simply the result of the Error() method on that error.
+
+If the error is an annotated error, a multi-line string is returned where
+each line represents one entry in the annotation stack. The full filename
+from the call stack is used in the output.
+
+
+ first error
+ github.com/juju/errors/annotation_test.go:193:
+ github.com/juju/errors/annotation_test.go:194: annotation
+ github.com/juju/errors/annotation_test.go:195:
+ github.com/juju/errors/annotation_test.go:196: more context
+ github.com/juju/errors/annotation_test.go:197:
+
+
+## func Errorf
+``` go
+func Errorf(format string, args ...interface{}) error
+```
+Errorf creates a new annotated error and records the location that the
+error is created. This should be a drop in replacement for fmt.Errorf.
+
+For example:
+
+
+ return errors.Errorf("validation failed: %s", message)
+
+
+## func IsAlreadyExists
+``` go
+func IsAlreadyExists(err error) bool
+```
+IsAlreadyExists reports whether the error was created with
+AlreadyExistsf() or NewAlreadyExists().
+
+
+## func IsNotFound
+``` go
+func IsNotFound(err error) bool
+```
+IsNotFound reports whether err was created with NotFoundf() or
+NewNotFound().
+
+
+## func IsNotImplemented
+``` go
+func IsNotImplemented(err error) bool
+```
+IsNotImplemented reports whether err was created with
+NotImplementedf() or NewNotImplemented().
+
+
+## func IsNotSupported
+``` go
+func IsNotSupported(err error) bool
+```
+IsNotSupported reports whether the error was created with
+NotSupportedf() or NewNotSupported().
+
+
+## func IsNotValid
+``` go
+func IsNotValid(err error) bool
+```
+IsNotValid reports whether the error was created with NotValidf() or
+NewNotValid().
+
+
+## func IsUnauthorized
+``` go
+func IsUnauthorized(err error) bool
+```
+IsUnauthorized reports whether err was created with Unauthorizedf() or
+NewUnauthorized().
+
+
+## func Mask
+``` go
+func Mask(other error) error
+```
+Mask hides the underlying error type, and records the location of the masking.
+
+
+## func Maskf
+``` go
+func Maskf(other error, format string, args ...interface{}) error
+```
+Mask masks the given error with the given format string and arguments (like
+fmt.Sprintf), returning a new error that maintains the error stack, but
+hides the underlying error type. The error string still contains the full
+annotations. If you want to hide the annotations, call Wrap.
+
+
+## func New
+``` go
+func New(message string) error
+```
+New is a drop in replacement for the standard libary errors module that records
+the location that the error is created.
+
+For example:
+
+
+ return errors.New("validation failed")
+
+
+## func NewAlreadyExists
+``` go
+func NewAlreadyExists(err error, msg string) error
+```
+NewAlreadyExists returns an error which wraps err and satisfies
+IsAlreadyExists().
+
+
+## func NewNotFound
+``` go
+func NewNotFound(err error, msg string) error
+```
+NewNotFound returns an error which wraps err that satisfies
+IsNotFound().
+
+
+## func NewNotImplemented
+``` go
+func NewNotImplemented(err error, msg string) error
+```
+NewNotImplemented returns an error which wraps err and satisfies
+IsNotImplemented().
+
+
+## func NewNotSupported
+``` go
+func NewNotSupported(err error, msg string) error
+```
+NewNotSupported returns an error which wraps err and satisfies
+IsNotSupported().
+
+
+## func NewNotValid
+``` go
+func NewNotValid(err error, msg string) error
+```
+NewNotValid returns an error which wraps err and satisfies IsNotValid().
+
+
+## func NewUnauthorized
+``` go
+func NewUnauthorized(err error, msg string) error
+```
+NewUnauthorized returns an error which wraps err and satisfies
+IsUnauthorized().
+
+
+## func NotFoundf
+``` go
+func NotFoundf(format string, args ...interface{}) error
+```
+NotFoundf returns an error which satisfies IsNotFound().
+
+
+## func NotImplementedf
+``` go
+func NotImplementedf(format string, args ...interface{}) error
+```
+NotImplementedf returns an error which satisfies IsNotImplemented().
+
+
+## func NotSupportedf
+``` go
+func NotSupportedf(format string, args ...interface{}) error
+```
+NotSupportedf returns an error which satisfies IsNotSupported().
+
+
+## func NotValidf
+``` go
+func NotValidf(format string, args ...interface{}) error
+```
+NotValidf returns an error which satisfies IsNotValid().
+
+
+## func Trace
+``` go
+func Trace(other error) error
+```
+Trace adds the location of the Trace call to the stack. The Cause of the
+resulting error is the same as the error parameter. If the other error is
+nil, the result will be nil.
+
+For example:
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Trace(err)
+ }
+
+
+## func Unauthorizedf
+``` go
+func Unauthorizedf(format string, args ...interface{}) error
+```
+Unauthorizedf returns an error which satisfies IsUnauthorized().
+
+
+## func Wrap
+``` go
+func Wrap(other, newDescriptive error) error
+```
+Wrap changes the Cause of the error. The location of the Wrap call is also
+stored in the error stack.
+
+For example:
+
+
+ if err := SomeFunc(); err != nil {
+ newErr := &packageError{"more context", private_value}
+ return errors.Wrap(err, newErr)
+ }
+
+
+## func Wrapf
+``` go
+func Wrapf(other, newDescriptive error, format string, args ...interface{}) error
+```
+Wrapf changes the Cause of the error, and adds an annotation. The location
+of the Wrap call is also stored in the error stack.
+
+For example:
+
+
+ if err := SomeFunc(); err != nil {
+ return errors.Wrapf(err, simpleErrorType, "invalid value %q", value)
+ }
+
+
+
+## type Err
+``` go
+type Err struct {
+ // contains filtered or unexported fields
+}
+```
+Err holds a description of an error along with information about
+where the error was created.
+
+It may be embedded in custom error types to add extra information that
+this errors package can understand.
+
+
+
+
+
+
+
+
+
+### func NewErr
+``` go
+func NewErr(format string, args ...interface{}) Err
+```
+NewErr is used to return an Err for the purpose of embedding in other
+structures. The location is not specified, and needs to be set with a call
+to SetLocation.
+
+For example:
+
+
+ type FooError struct {
+ errors.Err
+ code int
+ }
+
+ func NewFooError(code int) error {
+ err := &FooError{errors.NewErr("foo"), code}
+ err.SetLocation(1)
+ return err
+ }
+
+
+
+
+### func (\*Err) Cause
+``` go
+func (e *Err) Cause() error
+```
+The Cause of an error is the most recent error in the error stack that
+meets one of these criteria: the original error that was raised; the new
+error that was passed into the Wrap function; the most recently masked
+error; or nil if the error itself is considered the Cause. Normally this
+method is not invoked directly, but instead through the Cause stand alone
+function.
+
+
+
+### func (\*Err) Error
+``` go
+func (e *Err) Error() string
+```
+Error implements error.Error.
+
+
+
+### func (\*Err) Location
+``` go
+func (e *Err) Location() (filename string, line int)
+```
+Location is the file and line of where the error was most recently
+created or annotated.
+
+
+
+### func (\*Err) Message
+``` go
+func (e *Err) Message() string
+```
+Message returns the message stored with the most recent location. This is
+the empty string if the most recent call was Trace, or the message stored
+with Annotate or Mask.
+
+
+
+### func (\*Err) SetLocation
+``` go
+func (e *Err) SetLocation(callDepth int)
+```
+SetLocation records the source location of the error at callDepth stack
+frames above the call.
+
+
+
+### func (\*Err) StackTrace
+``` go
+func (e *Err) StackTrace() []string
+```
+StackTrace returns one string for each location recorded in the stack of
+errors. The first value is the originating error, with a line for each
+other annotation or tracing of the error.
+
+
+
+### func (\*Err) Underlying
+``` go
+func (e *Err) Underlying() error
+```
+Underlying returns the previous error in the error stack, if any. A client
+should not ever really call this method. It is used to build the error
+stack and should not be introspected by client calls. Or more
+specifically, clients should not depend on anything but the `Cause` of an
+error.
+
+
+
+
+
+
+
+
+
+- - -
+Generated by [godoc2md](http://godoc.org/github.com/davecheney/godoc2md)
\ No newline at end of file
diff --git a/switchq/vendor/github.com/juju/errors/doc.go b/switchq/vendor/github.com/juju/errors/doc.go
new file mode 100644
index 0000000..35b119a
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/doc.go
@@ -0,0 +1,81 @@
+// Copyright 2013, 2014 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+/*
+[godoc-link-here]
+
+The juju/errors provides an easy way to annotate errors without losing the
+orginal error context.
+
+The exported `New` and `Errorf` functions are designed to replace the
+`errors.New` and `fmt.Errorf` functions respectively. The same underlying
+error is there, but the package also records the location at which the error
+was created.
+
+A primary use case for this library is to add extra context any time an
+error is returned from a function.
+
+ if err := SomeFunc(); err != nil {
+ return err
+ }
+
+This instead becomes:
+
+ if err := SomeFunc(); err != nil {
+ return errors.Trace(err)
+ }
+
+which just records the file and line number of the Trace call, or
+
+ if err := SomeFunc(); err != nil {
+ return errors.Annotate(err, "more context")
+ }
+
+which also adds an annotation to the error.
+
+When you want to check to see if an error is of a particular type, a helper
+function is normally exported by the package that returned the error, like the
+`os` package does. The underlying cause of the error is available using the
+`Cause` function.
+
+ os.IsNotExist(errors.Cause(err))
+
+The result of the `Error()` call on an annotated error is the annotations joined
+with colons, then the result of the `Error()` method for the underlying error
+that was the cause.
+
+ err := errors.Errorf("original")
+ err = errors.Annotatef(err, "context")
+ err = errors.Annotatef(err, "more context")
+ err.Error() -> "more context: context: original"
+
+Obviously recording the file, line and functions is not very useful if you
+cannot get them back out again.
+
+ errors.ErrorStack(err)
+
+will return something like:
+
+ first error
+ github.com/juju/errors/annotation_test.go:193:
+ github.com/juju/errors/annotation_test.go:194: annotation
+ github.com/juju/errors/annotation_test.go:195:
+ github.com/juju/errors/annotation_test.go:196: more context
+ github.com/juju/errors/annotation_test.go:197:
+
+The first error was generated by an external system, so there was no location
+associated. The second, fourth, and last lines were generated with Trace calls,
+and the other two through Annotate.
+
+Sometimes when responding to an error you want to return a more specific error
+for the situation.
+
+ if err := FindField(field); err != nil {
+ return errors.Wrap(err, errors.NotFoundf(field))
+ }
+
+This returns an error where the complete error stack is still available, and
+`errors.Cause()` will return the `NotFound` error.
+
+*/
+package errors
diff --git a/switchq/vendor/github.com/juju/errors/error.go b/switchq/vendor/github.com/juju/errors/error.go
new file mode 100644
index 0000000..8c51c45
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/error.go
@@ -0,0 +1,145 @@
+// Copyright 2014 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package errors
+
+import (
+ "fmt"
+ "reflect"
+ "runtime"
+)
+
+// Err holds a description of an error along with information about
+// where the error was created.
+//
+// It may be embedded in custom error types to add extra information that
+// this errors package can understand.
+type Err struct {
+ // message holds an annotation of the error.
+ message string
+
+ // cause holds the cause of the error as returned
+ // by the Cause method.
+ cause error
+
+ // previous holds the previous error in the error stack, if any.
+ previous error
+
+ // file and line hold the source code location where the error was
+ // created.
+ file string
+ line int
+}
+
+// NewErr is used to return an Err for the purpose of embedding in other
+// structures. The location is not specified, and needs to be set with a call
+// to SetLocation.
+//
+// For example:
+// type FooError struct {
+// errors.Err
+// code int
+// }
+//
+// func NewFooError(code int) error {
+// err := &FooError{errors.NewErr("foo"), code}
+// err.SetLocation(1)
+// return err
+// }
+func NewErr(format string, args ...interface{}) Err {
+ return Err{
+ message: fmt.Sprintf(format, args...),
+ }
+}
+
+// NewErrWithCause is used to return an Err with case by other error for the purpose of embedding in other
+// structures. The location is not specified, and needs to be set with a call
+// to SetLocation.
+//
+// For example:
+// type FooError struct {
+// errors.Err
+// code int
+// }
+//
+// func (e *FooError) Annotate(format string, args ...interface{}) error {
+// err := &FooError{errors.NewErrWithCause(e.Err, format, args...), e.code}
+// err.SetLocation(1)
+// return err
+// })
+func NewErrWithCause(other error, format string, args ...interface{}) Err {
+ return Err{
+ message: fmt.Sprintf(format, args...),
+ cause: Cause(other),
+ previous: other,
+ }
+}
+
+// Location is the file and line of where the error was most recently
+// created or annotated.
+func (e *Err) Location() (filename string, line int) {
+ return e.file, e.line
+}
+
+// Underlying returns the previous error in the error stack, if any. A client
+// should not ever really call this method. It is used to build the error
+// stack and should not be introspected by client calls. Or more
+// specifically, clients should not depend on anything but the `Cause` of an
+// error.
+func (e *Err) Underlying() error {
+ return e.previous
+}
+
+// The Cause of an error is the most recent error in the error stack that
+// meets one of these criteria: the original error that was raised; the new
+// error that was passed into the Wrap function; the most recently masked
+// error; or nil if the error itself is considered the Cause. Normally this
+// method is not invoked directly, but instead through the Cause stand alone
+// function.
+func (e *Err) Cause() error {
+ return e.cause
+}
+
+// Message returns the message stored with the most recent location. This is
+// the empty string if the most recent call was Trace, or the message stored
+// with Annotate or Mask.
+func (e *Err) Message() string {
+ return e.message
+}
+
+// Error implements error.Error.
+func (e *Err) Error() string {
+ // We want to walk up the stack of errors showing the annotations
+ // as long as the cause is the same.
+ err := e.previous
+ if !sameError(Cause(err), e.cause) && e.cause != nil {
+ err = e.cause
+ }
+ switch {
+ case err == nil:
+ return e.message
+ case e.message == "":
+ return err.Error()
+ }
+ return fmt.Sprintf("%s: %v", e.message, err)
+}
+
+// SetLocation records the source location of the error at callDepth stack
+// frames above the call.
+func (e *Err) SetLocation(callDepth int) {
+ _, file, line, _ := runtime.Caller(callDepth + 1)
+ e.file = trimGoPath(file)
+ e.line = line
+}
+
+// StackTrace returns one string for each location recorded in the stack of
+// errors. The first value is the originating error, with a line for each
+// other annotation or tracing of the error.
+func (e *Err) StackTrace() []string {
+ return errorStack(e)
+}
+
+// Ideally we'd have a way to check identity, but deep equals will do.
+func sameError(e1, e2 error) bool {
+ return reflect.DeepEqual(e1, e2)
+}
diff --git a/switchq/vendor/github.com/juju/errors/errortypes.go b/switchq/vendor/github.com/juju/errors/errortypes.go
new file mode 100644
index 0000000..10b3b19
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/errortypes.go
@@ -0,0 +1,284 @@
+// Copyright 2014 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package errors
+
+import (
+ "fmt"
+)
+
+// wrap is a helper to construct an *wrapper.
+func wrap(err error, format, suffix string, args ...interface{}) Err {
+ newErr := Err{
+ message: fmt.Sprintf(format+suffix, args...),
+ previous: err,
+ }
+ newErr.SetLocation(2)
+ return newErr
+}
+
+// notFound represents an error when something has not been found.
+type notFound struct {
+ Err
+}
+
+// NotFoundf returns an error which satisfies IsNotFound().
+func NotFoundf(format string, args ...interface{}) error {
+ return ¬Found{wrap(nil, format, " not found", args...)}
+}
+
+// NewNotFound returns an error which wraps err that satisfies
+// IsNotFound().
+func NewNotFound(err error, msg string) error {
+ return ¬Found{wrap(err, msg, "")}
+}
+
+// IsNotFound reports whether err was created with NotFoundf() or
+// NewNotFound().
+func IsNotFound(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notFound)
+ return ok
+}
+
+// userNotFound represents an error when an inexistent user is looked up.
+type userNotFound struct {
+ Err
+}
+
+// UserNotFoundf returns an error which satisfies IsUserNotFound().
+func UserNotFoundf(format string, args ...interface{}) error {
+ return &userNotFound{wrap(nil, format, " user not found", args...)}
+}
+
+// NewUserNotFound returns an error which wraps err and satisfies
+// IsUserNotFound().
+func NewUserNotFound(err error, msg string) error {
+ return &userNotFound{wrap(err, msg, "")}
+}
+
+// IsUserNotFound reports whether err was created with UserNotFoundf() or
+// NewUserNotFound().
+func IsUserNotFound(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*userNotFound)
+ return ok
+}
+
+// unauthorized represents an error when an operation is unauthorized.
+type unauthorized struct {
+ Err
+}
+
+// Unauthorizedf returns an error which satisfies IsUnauthorized().
+func Unauthorizedf(format string, args ...interface{}) error {
+ return &unauthorized{wrap(nil, format, "", args...)}
+}
+
+// NewUnauthorized returns an error which wraps err and satisfies
+// IsUnauthorized().
+func NewUnauthorized(err error, msg string) error {
+ return &unauthorized{wrap(err, msg, "")}
+}
+
+// IsUnauthorized reports whether err was created with Unauthorizedf() or
+// NewUnauthorized().
+func IsUnauthorized(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*unauthorized)
+ return ok
+}
+
+// notImplemented represents an error when something is not
+// implemented.
+type notImplemented struct {
+ Err
+}
+
+// NotImplementedf returns an error which satisfies IsNotImplemented().
+func NotImplementedf(format string, args ...interface{}) error {
+ return ¬Implemented{wrap(nil, format, " not implemented", args...)}
+}
+
+// NewNotImplemented returns an error which wraps err and satisfies
+// IsNotImplemented().
+func NewNotImplemented(err error, msg string) error {
+ return ¬Implemented{wrap(err, msg, "")}
+}
+
+// IsNotImplemented reports whether err was created with
+// NotImplementedf() or NewNotImplemented().
+func IsNotImplemented(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notImplemented)
+ return ok
+}
+
+// alreadyExists represents and error when something already exists.
+type alreadyExists struct {
+ Err
+}
+
+// AlreadyExistsf returns an error which satisfies IsAlreadyExists().
+func AlreadyExistsf(format string, args ...interface{}) error {
+ return &alreadyExists{wrap(nil, format, " already exists", args...)}
+}
+
+// NewAlreadyExists returns an error which wraps err and satisfies
+// IsAlreadyExists().
+func NewAlreadyExists(err error, msg string) error {
+ return &alreadyExists{wrap(err, msg, "")}
+}
+
+// IsAlreadyExists reports whether the error was created with
+// AlreadyExistsf() or NewAlreadyExists().
+func IsAlreadyExists(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*alreadyExists)
+ return ok
+}
+
+// notSupported represents an error when something is not supported.
+type notSupported struct {
+ Err
+}
+
+// NotSupportedf returns an error which satisfies IsNotSupported().
+func NotSupportedf(format string, args ...interface{}) error {
+ return ¬Supported{wrap(nil, format, " not supported", args...)}
+}
+
+// NewNotSupported returns an error which wraps err and satisfies
+// IsNotSupported().
+func NewNotSupported(err error, msg string) error {
+ return ¬Supported{wrap(err, msg, "")}
+}
+
+// IsNotSupported reports whether the error was created with
+// NotSupportedf() or NewNotSupported().
+func IsNotSupported(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notSupported)
+ return ok
+}
+
+// notValid represents an error when something is not valid.
+type notValid struct {
+ Err
+}
+
+// NotValidf returns an error which satisfies IsNotValid().
+func NotValidf(format string, args ...interface{}) error {
+ return ¬Valid{wrap(nil, format, " not valid", args...)}
+}
+
+// NewNotValid returns an error which wraps err and satisfies IsNotValid().
+func NewNotValid(err error, msg string) error {
+ return ¬Valid{wrap(err, msg, "")}
+}
+
+// IsNotValid reports whether the error was created with NotValidf() or
+// NewNotValid().
+func IsNotValid(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notValid)
+ return ok
+}
+
+// notProvisioned represents an error when something is not yet provisioned.
+type notProvisioned struct {
+ Err
+}
+
+// NotProvisionedf returns an error which satisfies IsNotProvisioned().
+func NotProvisionedf(format string, args ...interface{}) error {
+ return ¬Provisioned{wrap(nil, format, " not provisioned", args...)}
+}
+
+// NewNotProvisioned returns an error which wraps err that satisfies
+// IsNotProvisioned().
+func NewNotProvisioned(err error, msg string) error {
+ return ¬Provisioned{wrap(err, msg, "")}
+}
+
+// IsNotProvisioned reports whether err was created with NotProvisionedf() or
+// NewNotProvisioned().
+func IsNotProvisioned(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notProvisioned)
+ return ok
+}
+
+// notAssigned represents an error when something is not yet assigned to
+// something else.
+type notAssigned struct {
+ Err
+}
+
+// NotAssignedf returns an error which satisfies IsNotAssigned().
+func NotAssignedf(format string, args ...interface{}) error {
+ return ¬Assigned{wrap(nil, format, " not assigned", args...)}
+}
+
+// NewNotAssigned returns an error which wraps err that satisfies
+// IsNotAssigned().
+func NewNotAssigned(err error, msg string) error {
+ return ¬Assigned{wrap(err, msg, "")}
+}
+
+// IsNotAssigned reports whether err was created with NotAssignedf() or
+// NewNotAssigned().
+func IsNotAssigned(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*notAssigned)
+ return ok
+}
+
+// badRequest represents an error when a request has bad parameters.
+type badRequest struct {
+ Err
+}
+
+// BadRequestf returns an error which satisfies IsBadRequest().
+func BadRequestf(format string, args ...interface{}) error {
+ return &badRequest{wrap(nil, format, "", args...)}
+}
+
+// NewBadRequest returns an error which wraps err that satisfies
+// IsBadRequest().
+func NewBadRequest(err error, msg string) error {
+ return &badRequest{wrap(err, msg, "")}
+}
+
+// IsBadRequest reports whether err was created with BadRequestf() or
+// NewBadRequest().
+func IsBadRequest(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*badRequest)
+ return ok
+}
+
+// methodNotAllowed represents an error when an HTTP request
+// is made with an inappropriate method.
+type methodNotAllowed struct {
+ Err
+}
+
+// MethodNotAllowedf returns an error which satisfies IsMethodNotAllowed().
+func MethodNotAllowedf(format string, args ...interface{}) error {
+ return &methodNotAllowed{wrap(nil, format, "", args...)}
+}
+
+// NewMethodNotAllowed returns an error which wraps err that satisfies
+// IsMethodNotAllowed().
+func NewMethodNotAllowed(err error, msg string) error {
+ return &methodNotAllowed{wrap(err, msg, "")}
+}
+
+// IsMethodNotAllowed reports whether err was created with MethodNotAllowedf() or
+// NewMethodNotAllowed().
+func IsMethodNotAllowed(err error) bool {
+ err = Cause(err)
+ _, ok := err.(*methodNotAllowed)
+ return ok
+}
diff --git a/switchq/vendor/github.com/juju/errors/functions.go b/switchq/vendor/github.com/juju/errors/functions.go
new file mode 100644
index 0000000..994208d
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/functions.go
@@ -0,0 +1,330 @@
+// Copyright 2014 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package errors
+
+import (
+ "fmt"
+ "strings"
+)
+
+// New is a drop in replacement for the standard libary errors module that records
+// the location that the error is created.
+//
+// For example:
+// return errors.New("validation failed")
+//
+func New(message string) error {
+ err := &Err{message: message}
+ err.SetLocation(1)
+ return err
+}
+
+// Errorf creates a new annotated error and records the location that the
+// error is created. This should be a drop in replacement for fmt.Errorf.
+//
+// For example:
+// return errors.Errorf("validation failed: %s", message)
+//
+func Errorf(format string, args ...interface{}) error {
+ err := &Err{message: fmt.Sprintf(format, args...)}
+ err.SetLocation(1)
+ return err
+}
+
+// Trace adds the location of the Trace call to the stack. The Cause of the
+// resulting error is the same as the error parameter. If the other error is
+// nil, the result will be nil.
+//
+// For example:
+// if err := SomeFunc(); err != nil {
+// return errors.Trace(err)
+// }
+//
+func Trace(other error) error {
+ if other == nil {
+ return nil
+ }
+ err := &Err{previous: other, cause: Cause(other)}
+ err.SetLocation(1)
+ return err
+}
+
+// Annotate is used to add extra context to an existing error. The location of
+// the Annotate call is recorded with the annotations. The file, line and
+// function are also recorded.
+//
+// For example:
+// if err := SomeFunc(); err != nil {
+// return errors.Annotate(err, "failed to frombulate")
+// }
+//
+func Annotate(other error, message string) error {
+ if other == nil {
+ return nil
+ }
+ err := &Err{
+ previous: other,
+ cause: Cause(other),
+ message: message,
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// Annotatef is used to add extra context to an existing error. The location of
+// the Annotate call is recorded with the annotations. The file, line and
+// function are also recorded.
+//
+// For example:
+// if err := SomeFunc(); err != nil {
+// return errors.Annotatef(err, "failed to frombulate the %s", arg)
+// }
+//
+func Annotatef(other error, format string, args ...interface{}) error {
+ if other == nil {
+ return nil
+ }
+ err := &Err{
+ previous: other,
+ cause: Cause(other),
+ message: fmt.Sprintf(format, args...),
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// DeferredAnnotatef annotates the given error (when it is not nil) with the given
+// format string and arguments (like fmt.Sprintf). If *err is nil, DeferredAnnotatef
+// does nothing. This method is used in a defer statement in order to annotate any
+// resulting error with the same message.
+//
+// For example:
+//
+// defer DeferredAnnotatef(&err, "failed to frombulate the %s", arg)
+//
+func DeferredAnnotatef(err *error, format string, args ...interface{}) {
+ if *err == nil {
+ return
+ }
+ newErr := &Err{
+ message: fmt.Sprintf(format, args...),
+ cause: Cause(*err),
+ previous: *err,
+ }
+ newErr.SetLocation(1)
+ *err = newErr
+}
+
+// Wrap changes the Cause of the error. The location of the Wrap call is also
+// stored in the error stack.
+//
+// For example:
+// if err := SomeFunc(); err != nil {
+// newErr := &packageError{"more context", private_value}
+// return errors.Wrap(err, newErr)
+// }
+//
+func Wrap(other, newDescriptive error) error {
+ err := &Err{
+ previous: other,
+ cause: newDescriptive,
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// Wrapf changes the Cause of the error, and adds an annotation. The location
+// of the Wrap call is also stored in the error stack.
+//
+// For example:
+// if err := SomeFunc(); err != nil {
+// return errors.Wrapf(err, simpleErrorType, "invalid value %q", value)
+// }
+//
+func Wrapf(other, newDescriptive error, format string, args ...interface{}) error {
+ err := &Err{
+ message: fmt.Sprintf(format, args...),
+ previous: other,
+ cause: newDescriptive,
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// Mask masks the given error with the given format string and arguments (like
+// fmt.Sprintf), returning a new error that maintains the error stack, but
+// hides the underlying error type. The error string still contains the full
+// annotations. If you want to hide the annotations, call Wrap.
+func Maskf(other error, format string, args ...interface{}) error {
+ if other == nil {
+ return nil
+ }
+ err := &Err{
+ message: fmt.Sprintf(format, args...),
+ previous: other,
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// Mask hides the underlying error type, and records the location of the masking.
+func Mask(other error) error {
+ if other == nil {
+ return nil
+ }
+ err := &Err{
+ previous: other,
+ }
+ err.SetLocation(1)
+ return err
+}
+
+// Cause returns the cause of the given error. This will be either the
+// original error, or the result of a Wrap or Mask call.
+//
+// Cause is the usual way to diagnose errors that may have been wrapped by
+// the other errors functions.
+func Cause(err error) error {
+ var diag error
+ if err, ok := err.(causer); ok {
+ diag = err.Cause()
+ }
+ if diag != nil {
+ return diag
+ }
+ return err
+}
+
+type causer interface {
+ Cause() error
+}
+
+type wrapper interface {
+ // Message returns the top level error message,
+ // not including the message from the Previous
+ // error.
+ Message() string
+
+ // Underlying returns the Previous error, or nil
+ // if there is none.
+ Underlying() error
+}
+
+type locationer interface {
+ Location() (string, int)
+}
+
+var (
+ _ wrapper = (*Err)(nil)
+ _ locationer = (*Err)(nil)
+ _ causer = (*Err)(nil)
+)
+
+// Details returns information about the stack of errors wrapped by err, in
+// the format:
+//
+// [{filename:99: error one} {otherfile:55: cause of error one}]
+//
+// This is a terse alternative to ErrorStack as it returns a single line.
+func Details(err error) string {
+ if err == nil {
+ return "[]"
+ }
+ var s []byte
+ s = append(s, '[')
+ for {
+ s = append(s, '{')
+ if err, ok := err.(locationer); ok {
+ file, line := err.Location()
+ if file != "" {
+ s = append(s, fmt.Sprintf("%s:%d", file, line)...)
+ s = append(s, ": "...)
+ }
+ }
+ if cerr, ok := err.(wrapper); ok {
+ s = append(s, cerr.Message()...)
+ err = cerr.Underlying()
+ } else {
+ s = append(s, err.Error()...)
+ err = nil
+ }
+ s = append(s, '}')
+ if err == nil {
+ break
+ }
+ s = append(s, ' ')
+ }
+ s = append(s, ']')
+ return string(s)
+}
+
+// ErrorStack returns a string representation of the annotated error. If the
+// error passed as the parameter is not an annotated error, the result is
+// simply the result of the Error() method on that error.
+//
+// If the error is an annotated error, a multi-line string is returned where
+// each line represents one entry in the annotation stack. The full filename
+// from the call stack is used in the output.
+//
+// first error
+// github.com/juju/errors/annotation_test.go:193:
+// github.com/juju/errors/annotation_test.go:194: annotation
+// github.com/juju/errors/annotation_test.go:195:
+// github.com/juju/errors/annotation_test.go:196: more context
+// github.com/juju/errors/annotation_test.go:197:
+func ErrorStack(err error) string {
+ return strings.Join(errorStack(err), "\n")
+}
+
+func errorStack(err error) []string {
+ if err == nil {
+ return nil
+ }
+
+ // We want the first error first
+ var lines []string
+ for {
+ var buff []byte
+ if err, ok := err.(locationer); ok {
+ file, line := err.Location()
+ // Strip off the leading GOPATH/src path elements.
+ file = trimGoPath(file)
+ if file != "" {
+ buff = append(buff, fmt.Sprintf("%s:%d", file, line)...)
+ buff = append(buff, ": "...)
+ }
+ }
+ if cerr, ok := err.(wrapper); ok {
+ message := cerr.Message()
+ buff = append(buff, message...)
+ // If there is a cause for this error, and it is different to the cause
+ // of the underlying error, then output the error string in the stack trace.
+ var cause error
+ if err1, ok := err.(causer); ok {
+ cause = err1.Cause()
+ }
+ err = cerr.Underlying()
+ if cause != nil && !sameError(Cause(err), cause) {
+ if message != "" {
+ buff = append(buff, ": "...)
+ }
+ buff = append(buff, cause.Error()...)
+ }
+ } else {
+ buff = append(buff, err.Error()...)
+ err = nil
+ }
+ lines = append(lines, string(buff))
+ if err == nil {
+ break
+ }
+ }
+ // reverse the lines to get the original error, which was at the end of
+ // the list, back to the start.
+ var result []string
+ for i := len(lines); i > 0; i-- {
+ result = append(result, lines[i-1])
+ }
+ return result
+}
diff --git a/switchq/vendor/github.com/juju/errors/path.go b/switchq/vendor/github.com/juju/errors/path.go
new file mode 100644
index 0000000..a7b726a
--- /dev/null
+++ b/switchq/vendor/github.com/juju/errors/path.go
@@ -0,0 +1,38 @@
+// Copyright 2013, 2014 Canonical Ltd.
+// Licensed under the LGPLv3, see LICENCE file for details.
+
+package errors
+
+import (
+ "runtime"
+ "strings"
+)
+
+// prefixSize is used internally to trim the user specific path from the
+// front of the returned filenames from the runtime call stack.
+var prefixSize int
+
+// goPath is the deduced path based on the location of this file as compiled.
+var goPath string
+
+func init() {
+ _, file, _, ok := runtime.Caller(0)
+ if file == "?" {
+ return
+ }
+ if ok {
+ // We know that the end of the file should be:
+ // github.com/juju/errors/path.go
+ size := len(file)
+ suffix := len("github.com/juju/errors/path.go")
+ goPath = file[:size-suffix]
+ prefixSize = len(goPath)
+ }
+}
+
+func trimGoPath(filename string) string {
+ if strings.HasPrefix(filename, goPath) {
+ return filename[prefixSize:]
+ }
+ return filename
+}