使用 AWS Panorama API 管理應用程式

您可以使用 AWS Panorama API 監控和管理應用程式。

檢視應用程式

若要取得在 設備上執行的應用程式清單，請使用 ListApplicationInstances API。

$ aws panorama list-application-instances
    "ApplicationInstances": [
        {
            "Name": "aws-panorama-sample",
            "ApplicationInstanceId": "applicationInstance-ddaxxmpl2z7bg74ywutd7byxuq",
            "DefaultRuntimeContextDevice": "device-4tafxmplhtmzabv5lsacba4ere",
            "DefaultRuntimeContextDeviceName": "my-appliance",
            "Description": "command-line deploy",
            "Status": "DEPLOYMENT_SUCCEEDED",
            "HealthStatus": "RUNNING",
            "StatusDescription": "Application deployed successfully.",
            "CreatedTime": 1661902051.925,
            "Arn": "arn:aws:panorama:us-east-2:123456789012:applicationInstance/applicationInstance-ddaxxmpl2z7bg74ywutd7byxuq",
            "Tags": {
                "client": "sample"
            }
        },
    ]
}

若要取得應用程式執行個體節點的詳細資訊，請使用 ListApplicationInstanceNodeInstances API。

$ aws panorama list-application-instance-node-instances --application-instance-id applicationInstance-ddaxxmpl2z7bg74ywutd7byxuq
{
    "NodeInstances": [
        {
            "NodeInstanceId": "code_node",
            "NodeId": "SAMPLE_CODE-1.0-fd3dxmpl-interface",
            "PackageName": "SAMPLE_CODE",
            "PackageVersion": "1.0",
            "PackagePatchVersion": "fd3dxmpl2bdfa41e6fe1be290a79dd2c29cf014eadf7416d861ce7715ad5e8a8",
            "NodeName": "interface",
            "CurrentStatus": "RUNNING"
        },
        {
            "NodeInstanceId": "camera_node_override",
            "NodeId": "warehouse-floor-1.0-9eabxmpl-warehouse-floor",
            "PackageName": "warehouse-floor",
            "PackageVersion": "1.0",
            "PackagePatchVersion": "9eabxmple89f0f8b2f2852cca2a6e7971aa38f1629a210d069045e83697e42a7",
            "NodeName": "warehouse-floor",
            "CurrentStatus": "RUNNING"
        },
        {
            "NodeInstanceId": "output_node",
            "NodeId": "hdmi_data_sink-1.0-9c23xmpl-hdmi0",
            "PackageName": "hdmi_data_sink",
            "PackageVersion": "1.0",
            "PackagePatchVersion": "9c23xmplc4c98b92baea4af676c8b16063d17945a3f6bd8f83f4ff5aa0d0b394",
            "NodeName": "hdmi0",
            "CurrentStatus": "RUNNING"
        },
        {
            "NodeInstanceId": "model_node",
            "NodeId": "SQUEEZENET_PYTORCH-1.0-5d3cabda-interface",
            "PackageName": "SQUEEZENET_PYTORCH",
            "PackageVersion": "1.0",
            "PackagePatchVersion": "5d3cxmplb7113faa1d130f97f619655d8ca12787c751851a0e155e50eb5e3e96",
            "NodeName": "interface",
            "CurrentStatus": "RUNNING"
        }
    ]
}

管理攝影機串流

您可以使用 SignalApplicationInstanceNodeInstances API 暫停和繼續攝影機串流節點。

$ aws panorama signal-application-instance-node-instances --application-instance-id applicationInstance-ddaxxmpl2z7bg74ywutd7byxuq \
        --node-signals '[{"NodeInstanceId": "camera_node_override", "Signal": "PAUSE"}]'
{
    "ApplicationInstanceId": "applicationInstance-ddaxxmpl2z7bg74ywutd7byxuq"
}

在指令碼中，您可以取得節點清單，然後選擇一個以互動方式暫停或繼續。

my-app$ ./pause-camera.sh

Getting nodes...
0: SAMPLE_CODE              RUNNING
1: warehouse-floor          RUNNING
2: hdmi_data_sink           RUNNING
3: entrance-north           PAUSED
4: SQUEEZENET_PYTORCH       RUNNING
Choose a node
1
Signalling node warehouse-floor
+ aws panorama signal-application-instance-node-instances --application-instance-id applicationInstance-r3a7xmplcbmpjqeds7vj4b6pjy --node-signals '[{"NodeInstanceId": "warehouse-floor", "Signal": "PAUSE"}]'
{
    "ApplicationInstanceId": "applicationInstance-r3a7xmplcbmpjqeds7vj4b6pjy"
}

透過暫停和恢復攝影機節點，您可以循環瀏覽比可同時處理更多數量的攝影機串流。若要這樣做，請將多個攝影機串流映射到覆寫資訊清單中的相同輸入節點。

在下列範例中，覆寫資訊清單會將兩個攝影機串流warehouse-floor和 映射entrance-north至相同的輸入節點 (camera_node)。當應用程式啟動且entrance-north節點等待訊號開啟時，warehouse-floor串流會處於作用中狀態。

    "nodeGraphOverrides": {
        "nodes": [
            {
                "name": "warehouse-floor",
                "interface": "123456789012::warehouse-floor.warehouse-floor",
                "launch": "onAppStart"
            },
            {
                "name": "entrance-north",
                "interface": "123456789012::entrance-north.entrance-north",
                "launch": "onSignal"
            },
        ...
        "packages": [
            {
                "name": "123456789012::warehouse-floor",
                "version": "1.0"
            },
            {
                "name": "123456789012::entrance-north",
                "version": "1.0"
            }
        ],
        "nodeOverrides": [
            {
                "replace": "camera_node",
                "with": [
                    {
                        "name": "warehouse-floor"
                    },
                    {
                        "name": "entrance-north"
                    }
                ]
            }

如需使用 API 部署的詳細資訊，請參閱 自動化應用程式部署。