[CI:DOCS]add apiv2 endpoints for exec

add the openapi/swagger documentation for exec.  The subcommands added are create, inspect, resize, and start.

at the time of this writing, no structure is declared for the inspect response.  once the libpod work for this is complete, we can inherit and swaggerize it.

Signed-off-by: Brent Baude <bbaude@redhat.com>

5 files changed, 368 insertions, 0 deletions

diff --git a/pkg/api/handlers/exec.go b/pkg/api/handlers/exec.go
new file mode 100644
index 000000000..8a7b2ae26
--- /dev/null
+++ b/pkg/api/handlers/exec.go
@@ -0,0 +1,25 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/containers/libpod/libpod/define"
+	"github.com/containers/libpod/pkg/api/handlers/utils"
+)
+
+func CreateExec(w http.ResponseWriter, r *http.Request) {
+	utils.Error(w, "function not implemented", http.StatusInternalServerError, define.ErrNotImplemented)
+}
+
+func StartExec(w http.ResponseWriter, r *http.Request) {
+	utils.Error(w, "function not implemented", http.StatusInternalServerError, define.ErrNotImplemented)
+}
+
+func ResizeExec(w http.ResponseWriter, r *http.Request) {
+	utils.Error(w, "function not implemented", http.StatusInternalServerError, define.ErrNotImplemented)
+
+}
+
+func InspectExec(w http.ResponseWriter, r *http.Request) {
+	utils.Error(w, "function not implemented", http.StatusInternalServerError, define.ErrNotImplemented)
+}
diff --git a/pkg/api/server/register_exec.go b/pkg/api/server/register_exec.go
new file mode 100644
index 000000000..dbf04dc19
--- /dev/null
+++ b/pkg/api/server/register_exec.go
@@ -0,0 +1,329 @@
+package server
+
+import (
+	"net/http"
+
+	"github.com/containers/libpod/pkg/api/handlers"
+	"github.com/gorilla/mux"
+)
+
+func (s *APIServer) registerExecHandlers(r *mux.Router) error {
+	// swagger:operation POST /containers/{name}/create compat createExec
+	// ---
+	// tags:
+	//   - exec (compat)
+	// summary: Create an exec instance
+	// description: Run a command inside a running container.
+	// parameters:
+	//  - in: path
+	//    name: name
+	//    type: string
+	//    required: true
+	//    description: name of container
+	//  - in: body
+	//    name: control
+	//    description: Attributes for create
+	//    schema:
+	//      type: object
+	//      properties:
+	//        AttachStdin:
+	//          type: boolean
+	//          description: Attach to stdin of the exec command
+	//        AttachStdout:
+	//          type: boolean
+	//          description: Attach to stdout of the exec command
+	//        AttachStderr:
+	//          type: boolean
+	//          description: Attach to stderr of the exec command
+	//        DetachKeys:
+	//          type: string
+	//          description: |
+	//           "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _."
+	//        Tty:
+	//          type: boolean
+	//          description: Allocate a pseudo-TTY
+	//        Env:
+	//          type: array
+	//          description: A list of environment variables in the form ["VAR=value", ...]
+	//          items:
+	//            type: string
+	//        Cmd:
+	//          type: array
+	//          description: Command to run, as a string or array of strings.
+	//          items:
+	//            type: string
+	//        Privileged:
+	//          type: boolean
+	//          default: false
+	//          description: Runs the exec process with extended privileges
+	//        User:
+	//          type: string
+	//          description: |
+	//           "The user, and optionally, group to run the exec process inside the container. Format is one of: user, user:group, uid, or uid:gid."
+	//        WorkingDir:
+	//          type: string
+	//          description: The working directory for the exec process inside the container.
+	// produces:
+	// - application/json
+	// responses:
+	//   201:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchContainer"
+	//   409:
+	//	   description: container is paused
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/containers/{name}/create"), APIHandler(s.Context, handlers.CreateExec)).Methods(http.MethodPost)
+	// swagger:operation POST /exec/{id}/start compat startExec
+	// ---
+	// tags:
+	//   - exec (compat)
+	// summary: Start an exec instance
+	// description: Starts a previously set up exec instance. If detach is true, this endpoint returns immediately after starting the command. Otherwise, it sets up an interactive session with the command.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	//  - in: body
+	//    name: control
+	//    description: Attributes for start
+	//    schema:
+	//      type: object
+	//      properties:
+	//        Detach:
+	//          type: boolean
+	//          description: Detach from the command
+	//        Tty:
+	//          type: boolean
+	//          description: Allocate a pseudo-TTY
+	// produces:
+	// - application/json
+	// responses:
+	//   200:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   409:
+	//	   description: container is stopped or paused
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/exec/{id}/start"), APIHandler(s.Context, handlers.StartExec)).Methods(http.MethodPost)
+	// swagger:operation POST /exec/{id}/resize compat resizeExec
+	// ---
+	// tags:
+	//   - exec (compat)
+	// summary: Resize an exec instance
+	// description: |
+	//  Resize the TTY session used by an exec instance. This endpoint only works if tty was specified as part of creating and starting the exec instance.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	//  - in: query
+	//    name: h
+	//    type: integer
+	//    description: Height of the TTY session in characters
+	//  - in: query
+	//    name: w
+	//    type: integer
+	//    description: Width of the TTY session in characters
+	// produces:
+	// - application/json
+	// responses:
+	//   201:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/exec/{id}/resize"), APIHandler(s.Context, handlers.ResizeExec)).Methods(http.MethodPost)
+	// swagger:operation GET /exec/{id}/inspect compat inspectExec
+	// ---
+	// tags:
+	//   - exec (compat)
+	// summary: Inspect an exec instance
+	// description: Return low-level information about an exec instance.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	// produces:
+	// - application/json
+	// responses:
+	//   200:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/exec/{id}/json"), APIHandler(s.Context, handlers.InspectExec)).Methods(http.MethodGet)
+
+	/*
+		libpod api follows
+	*/
+
+	// swagger:operation POST /libpod/containers/{name}/create libpod libpodCreateExec
+	// ---
+	// tags:
+	//   - exec
+	// summary: Create an exec instance
+	// description: Run a command inside a running container.
+	// parameters:
+	//  - in: path
+	//    name: name
+	//    type: string
+	//    required: true
+	//    description: name of container
+	//  - in: body
+	//    name: control
+	//    description: Attributes for create
+	//    schema:
+	//      type: object
+	//      properties:
+	//        AttachStdin:
+	//          type: boolean
+	//          description: Attach to stdin of the exec command
+	//        AttachStdout:
+	//          type: boolean
+	//          description: Attach to stdout of the exec command
+	//        AttachStderr:
+	//          type: boolean
+	//          description: Attach to stderr of the exec command
+	//        DetachKeys:
+	//          type: string
+	//          description: |
+	//           "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _."
+	//        Tty:
+	//          type: boolean
+	//          description: Allocate a pseudo-TTY
+	//        Env:
+	//          type: array
+	//          description: A list of environment variables in the form ["VAR=value", ...]
+	//          items:
+	//            type: string
+	//        Cmd:
+	//          type: array
+	//          description: Command to run, as a string or array of strings.
+	//          items:
+	//            type: string
+	//        Privileged:
+	//          type: boolean
+	//          default: false
+	//          description: Runs the exec process with extended privileges
+	//        User:
+	//          type: string
+	//          description: |
+	//           "The user, and optionally, group to run the exec process inside the container. Format is one of: user, user:group, uid, or uid:gid."
+	//        WorkingDir:
+	//          type: string
+	//          description: The working directory for the exec process inside the container.
+	// produces:
+	// - application/json
+	// responses:
+	//   201:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchContainer"
+	//   409:
+	//	   description: container is paused
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/libpod/containers/{name}/create"), APIHandler(s.Context, handlers.CreateExec)).Methods(http.MethodPost)
+	// swagger:operation POST /libpod/exec/{id}/start libpod libpodStartExec
+	// ---
+	// tags:
+	//   - exec
+	// summary: Start an exec instance
+	// description: Starts a previously set up exec instance. If detach is true, this endpoint returns immediately after starting the command. Otherwise, it sets up an interactive session with the command.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	//  - in: body
+	//    name: control
+	//    description: Attributes for start
+	//    schema:
+	//      type: object
+	//      properties:
+	//        Detach:
+	//          type: boolean
+	//          description: Detach from the command
+	//        Tty:
+	//          type: boolean
+	//          description: Allocate a pseudo-TTY
+	// produces:
+	// - application/json
+	// responses:
+	//   200:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   409:
+	//	   description: container is stopped or paused
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/libpod/exec/{id}/start"), APIHandler(s.Context, handlers.StartExec)).Methods(http.MethodPost)
+	// swagger:operation POST /libpod/exec/{id}/resize libpod libpodResizeExec
+	// ---
+	// tags:
+	//   - exec
+	// summary: Resize an exec instance
+	// description: |
+	//  Resize the TTY session used by an exec instance. This endpoint only works if tty was specified as part of creating and starting the exec instance.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	//  - in: query
+	//    name: h
+	//    type: integer
+	//    description: Height of the TTY session in characters
+	//  - in: query
+	//    name: w
+	//    type: integer
+	//    description: Width of the TTY session in characters
+	// produces:
+	// - application/json
+	// responses:
+	//   201:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/libpod/exec/{id}/resize"), APIHandler(s.Context, handlers.ResizeExec)).Methods(http.MethodPost)
+	// swagger:operation GET /libpod/exec/{id}/inspect libpod libpodInspectExec
+	// ---
+	// tags:
+	//   - exec
+	// summary: Inspect an exec instance
+	// description: Return low-level information about an exec instance.
+	// parameters:
+	//  - in: path
+	//    name: id
+	//    type: string
+	//    required: true
+	//    description: Exec instance ID
+	// produces:
+	// - application/json
+	// responses:
+	//   200:
+	//     description: no error
+	//   404:
+	//     $ref: "#/responses/NoSuchExecInstance"
+	//   500:
+	//     $ref: "#/responses/InternalError"
+	r.Handle(VersionedPath("/libpod/exec/{id}/json"), APIHandler(s.Context, handlers.InspectExec)).Methods(http.MethodGet)
+	return nil
+}
diff --git a/pkg/api/server/server.go b/pkg/api/server/server.go
index d030961cb..7bb0f5481 100644
--- a/pkg/api/server/server.go
+++ b/pkg/api/server/server.go
@@ -105,6 +105,7 @@ func newServer(runtime *libpod.Runtime, duration time.Duration, listener *net.Li
 		server.RegisterAuthHandlers,
 		server.RegisterContainersHandlers,
 		server.RegisterDistributionHandlers,
+		server.registerExecHandlers,
 		server.registerHealthCheckHandlers,
 		server.registerImagesHandlers,
 		server.registerInfoHandlers,
diff --git a/pkg/api/server/swagger.go b/pkg/api/server/swagger.go
index 5098390bc..fc409d816 100644
--- a/pkg/api/server/swagger.go
+++ b/pkg/api/server/swagger.go
@@ -23,6 +23,15 @@ type swagErrNoSuchContainer struct {
 	}
 }
 
+// No such exec instance
+// swagger:response NoSuchExecInstance
+type swagErrNoSuchExecInstance struct {
+	// in:body
+	Body struct {
+		utils.ErrorModel
+	}
+}
+
 // No such volume
 // swagger:response NoSuchVolume
 type swagErrNoSuchVolume struct {
diff --git a/pkg/api/tags.yaml b/pkg/api/tags.yaml
index ad0de656f..9966076fb 100644
--- a/pkg/api/tags.yaml
+++ b/pkg/api/tags.yaml
@@ -1,6 +1,8 @@
 tags:
     - name: containers
       description: Actions related to containers
+    - name: exec
+      description: Actions related to exec
     - name: images
       description: Actions related to images
     - name: pods
@@ -9,5 +11,7 @@ tags:
       description: Actions related to volumes
     - name: containers (compat)
       description: Actions related to containers for the compatibility endpoints
+    - name: exec (compat)
+      description: Actions related to exec for the compatibility endpoints
     - name: images (compat)
       description: Actions related to images for the compatibility endpoints