Check podman installation for start dev on podman

Signed-off-by: Jessica He <jhe@redhat.com>

Author: JessicaJHee

src/odo.ts

@@ -70,6 +70,7 @@ export interface Odo {
     describeComponent(contextPath: string, experimental?: boolean): Promise<ComponentDescription | undefined>;
     analyze(contextPath: string): Promise<AnalyzeResponse[]>;
     canCreatePod(): Promise<boolean>;
+    isPodmanPresent(): Promise<boolean>;
 
     /**
      * Returns the URL of the API of the current active cluster,
@@ -343,6 +344,18 @@ export class OdoImpl implements Odo {
         }
         return false;
     }
+
+    public async isPodmanPresent(): Promise<boolean> {
+        try {
+            const result: cliInstance.CliExitData = await this.execute(Command.printOdoVersionJson());
+            if ('podman' in JSON.parse(result.stdout)) {
+                return true;
+            }
+        } catch {
+            //ignore
+        }
+        return false;
+    }
 }
 
 export function getInstance(): Odo {

src/odo/command.ts

@@ -160,6 +160,10 @@ export class Command {
         return new CommandText('odo version');
     }
 
+    static printOdoVersionJson(): CommandText {
+        return new CommandText('odo version -o json');
+    }
+
     static odoLogout(): CommandText {
         return new CommandText('odo logout');
     }

src/openshift/component.ts

@@ -204,7 +204,16 @@ export class Component extends OpenShiftItem {
 
     @vsCommand('openshift.component.dev.onPodman')
     static async devOnPodman(component: ComponentWorkspaceFolder) {
-        return Component.dev(component, 'podman');
+        if (await Component.odo.isPodmanPresent()) {
+            return Component.dev(component, 'podman');
+        }
+        void window.showErrorMessage('Podman is not present in the system, please install podman on your machine and try again.', 'Install podman')
+            .then(async (result) => {
+                if (result === 'Install podman') {
+                    await commands.executeCommand('vscode.open', Uri.parse('https://podman.io/'));
+                }
+            });
+        return;
     }
 
     @vsCommand('openshift.component.binding.add')