io.ipfs.api.MerkleNode Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of java-xpx-ipfs-api Show documentation
The ProximaX IPFS Java API is a Java library for interacting IPFS server.
The newest version!
package io.ipfs.api;

import io.ipfs.cid.*;
import io.ipfs.multihash.Multihash;

import java.util.*;
import java.util.stream.*;

public class MerkleNode {

    public final Multihash hash;
    public final Optional name;
    public final Optional size;
    public final Optional largeSize;
    public final Optional type;
    public final List links;
    public final Optional data;

    public MerkleNode(String hash,
                      Optional name,
                      Optional size,
                      Optional largeSize,
                      Optional type,
                      List links,
                      Optional data) {
        this.name = name;
        this.hash = Cid.decode(hash);
        this.size = size;
        this.largeSize = largeSize;
        this.type = type;
        this.links = links;
        this.data = data;
    }

    public MerkleNode(String hash) {
        this(hash, Optional.empty());
    }

    public MerkleNode(String hash, Optional name) {
        this(hash, name, Optional.empty(), Optional.empty(), Optional.empty(), Arrays.asList(), Optional.empty());
    }

    @Override
    public boolean equals(Object b) {
        if (!(b instanceof MerkleNode))
            return false;
        MerkleNode other = (MerkleNode) b;
        return hash.equals(other.hash); // ignore name hash says it all
    }

    @Override
    public int hashCode() {
        return hash.hashCode();
    }

    public static MerkleNode fromJSON(Object rawjson) {
        if (rawjson instanceof String)
            return new MerkleNode((String)rawjson);
        Map json = (Map)rawjson;
        String hash = (String)json.get("Hash");
        if (hash == null)
            hash = (String)json.get("Key");
        Optional name = json.containsKey("Name") ?
                Optional.of((String) json.get("Name")) :
                Optional.empty();
        Object rawSize = json.get("Size");
        Optional size = rawSize instanceof Integer ?
                Optional.of((Integer) rawSize) :
                Optional.empty();
        Optional largeSize = rawSize instanceof String ?
                Optional.of((String) json.get("Size")) :
                Optional.empty();
        if ("error".equals(json.get("Type")))
            throw new IllegalStateException("Remote IPFS error: " + json.get("Message"));
        Optional type = json.containsKey("Type") ?
                Optional.of((Integer) json.get("Type")) :
                Optional.empty();
        List