### Config Ingestion

Istio reads from over 20 different resources types, and aggregates them together to build the proxy configuration. These resources can be sourced from Kubernetes (via watches), files, or over xDS; Kubernetes is by far the most common usage, though.

Primarily for historical reasons, ingestion is split into a few components.

#### ConfigStore

                case "clean":
                    packaged = false;
                    break;
                case "package":
                case "install":
                case "deploy":
                    packaged = true;
                    break;
                default:
                    break;
            }
        }
        return packaged;
    }

                    proto = str.substring(mark, si);
                    mark = si + 1;
                    state = 1;
                }
                break;
            case 1:
                if ( ch == '\\' ) {
                    mark = si + 1;
                    break;
                }
                state = 2;
            case 2:
                if ( ch == '[' ) {

        }
        return tmp[0] & 0xFF;
    }

/**
 * Reads up to b.length bytes of data from this input stream into an array of bytes.
 *
 * @throws IOException if a network error occurs
 */

    public int read( byte[] b ) throws IOException {
        return read( b, 0, b.length );
    }

/**
 * Reads up to len bytes of data from this input stream into an array of bytes.
 *

            if (ch != -1) {
                ch = readCharFromBuffer();
            }
            if (ch == -1) {
                break;
            } else if (!isDelimiter(ch)) {
                block.append((char) ch);
            } else if (block.length() > 0) {
                break;
            } else {
                blkStart++;
            }
        }
        if (block.length() == 0) {

            if (finishLine(cbuf[pos + 1] == '\n')) {
              pos++;
            }
          }
          start = pos + 1;
          break;

        case '\n':
          line.append(cbuf, start, pos - start);
          finishLine(true);
          start = pos + 1;
          break;

        default:
          // do nothing
      }
    }
    line.append(cbuf, start, off + len - start);
  }

            if (finishLine(cbuf[pos + 1] == '\n')) {
              pos++;
            }
          }
          start = pos + 1;
          break;

        case '\n':
          line.append(cbuf, start, pos - start);
          finishLine(true);
          start = pos + 1;
          break;

        default:
          // do nothing
      }
    }
    line.append(cbuf, start, off + len - start);
  }

                out[ prefixLen++ ] = in[ i ];
                state = 1;
                break;
            case 1:
                if ( in[ i ] == '/' ) {
                    break;
                }
                else if ( in[ i ] == '.' && ( ( i + 1 ) >= length || in[ i + 1 ] == '/' ) ) {
                    i++;
                    break;
                }

                case SmbComTransaction.TRANS2_GET_DFS_REFERRAL:
                    break;
                default:
                    throw new SmbException("Invalid operation for " + svc + " service: " + request);
                }
                break;
            default:
                throw new SmbException("Invalid operation for " + svc + " service" + request);
            }

                userKey.update(hmac.digest());
                userKey.digest(dest, offset, 16);
                break;
            default:
                md4.update(ntHash);
                md4.digest(dest, offset, 16);
                break;
            }
        }
        catch ( Exception e ) {
            throw new SmbException("", e);
        }
    }


    /**