basic retrieval content discovery

cli/client.go

@@ -19,6 +19,8 @@ var clientCmd = &cli.Command{
 		clientImportCmd,
 		clientLocalCmd,
 		clientDealCmd,
+		clientFindCmd,
+		clientRetrieveCmd,
 	},
 }
 
@@ -108,3 +110,99 @@ var clientDealCmd = &cli.Command{
 		return nil
 	},
 }
+
+var clientFindCmd = &cli.Command{
+	Name:  "find",
+	Usage: "find data in the network",
+	Action: func(cctx *cli.Context) error {
+		if !cctx.Args().Present() {
+			fmt.Println("Usage: retrieve [CID]")
+			return nil
+		}
+
+		file, err := cid.Parse(cctx.Args().First())
+		if err != nil {
+			return err
+		}
+
+		api, err := GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+		ctx := ReqContext(cctx)
+
+		// Check if we already have this data locally
+
+		has, err := api.ClientHasLocal(ctx, file)
+		if err != nil {
+			return err
+		}
+
+		if has {
+			fmt.Println("LOCAL")
+		}
+
+		offers, err := api.ClientFindData(ctx, file)
+		if err != nil {
+			return err
+		}
+
+		for _, offer := range offers {
+			if offer.Err != "" {
+				fmt.Printf("ERR %s@%s: %s\n", offer.Miner, offer.MinerPeerID, offer.Err)
+				continue
+			}
+			fmt.Printf("RETRIEVAL %s@%s-%sfil-%db\n", offer.Miner, offer.MinerPeerID, offer.MinPrice, offer.Size)
+		}
+
+		return nil
+	},
+}
+
+var clientRetrieveCmd = &cli.Command{
+	Name:  "retrieve",
+	Usage: "retrieve data from network",
+	Action: func(cctx *cli.Context) error {
+		if !cctx.Args().Present() {
+			fmt.Println("Usage: retrieve [CID]")
+			return nil
+		}
+
+		file, err := cid.Parse(cctx.Args().First())
+		if err != nil {
+			return err
+		}
+
+		api, err := GetFullNodeAPI(cctx)
+		if err != nil {
+			return err
+		}
+		ctx := ReqContext(cctx)
+
+		// Check if we already have this data locally
+
+		has, err := api.ClientHasLocal(ctx, file)
+		if err != nil {
+			return err
+		}
+
+		if has {
+			fmt.Println("Success: Already in local storage")
+			return nil
+		}
+
+		_, err = api.ClientFindData(ctx, file)
+		if err != nil {
+			return err
+		}
+
+		// Find miner which may have this data
+
+		// Get merkle proofs (intermediate nodes)
+
+		// if acceptable, make retrieval deals to get data
+		// done
+
+		panic("TODO")
+	},
+}