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.

Neither the name of JLine nor the names of its contributors
may be used to endorse or promote products derived from this
software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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.

Neither the name of JLine nor the names of its contributors
may be used to endorse or promote products derived from this
software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

Matthew Dempsky <******@****.***> 1693101993 -0700

	// ManifestsFlagHelpStr is the command line description for --manifests
	ManifestsFlagHelpStr = `Specify a path to a directory of charts and profiles
(e.g. ~/Downloads/istio-` + baseVersion + `/manifests).
`
)

const (
	ChartsDeprecatedStr         = "Deprecated, use --manifests instead."
	revisionFlagHelpStr         = `Target control plane revision for the command.`

// limitations under the License.

package xds

// xds uses ADSC to call XDS

import (
	"context"
	"crypto/tls"
	"fmt"
	"strings"

	discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"

	"istio.io/istio/istioctl/pkg/clioptions"
	"istio.io/istio/pilot/pkg/model"
	"istio.io/istio/pkg/adsc"

three main components:

- [MeshConfig](https://github.com/istio/api/blob/master/mesh/v1alpha1/config.proto) for runtime config consumed directly by Istio
control plane components.
- [Component configuration API](https://github.com/istio/api/blob/00671adacbea20f941cb20cce021bc63cbad1840/operator/v1alpha1/operator.proto#L42-L93), for managing

microservices](https://istio.io/latest/docs/examples/microservices-istio/), manage [traffic flow](https://istio.io/latest/docs/concepts/traffic-management/) across microservices, enforce policies
and aggregate telemetry data. Istio's control plane provides an abstraction
layer over the underlying cluster management platform, such as Kubernetes.

Istio is composed of these components:

- **Envoy** - Sidecar proxies per microservice to handle ingress/egress traffic

import javax.annotation.CheckForNull;

/**
 * The representation of a linear transformation between real numbers {@code x} and {@code y}.
 * Graphically, this is the specification of a straight line on a plane. The transformation can be
 * expressed as {@code y = m * x + c} for finite {@code m} and {@code c}, unless it is a vertical
 * transformation in which case {@code x} has a constant value for all {@code y}. In the

  # (This is the usual way to get the control plane version with an out-of-cluster control plane.)
  istioctl x version --xds-address istio.cloudprovider.example.com:15012

  # Retrieve version information via Kubernetes config, using token security
  # (This is the usual way to get the control plane version with an in-cluster control plane.)
  istioctl x version

   E000-F8FF; [PRIVATE USE, PLANE 0]
   F0000-FFFFD; [PRIVATE USE, PLANE 15]